WEBENCH Power Architect - edge.rit.eduedge.rit.edu/content/P15051/public/MSD I/Detailed Design Document… · Project Report Project : 4305911/2 : PA_Project_303 (modified from 301)

Copyright © 2015, Texas Instruments Incorporated 1 ti.com/webench

WEBENCH Project Report Project : 2 : PA_Project_303 (modified from 301) April 22, 2015 22:02:14 GMT-07:00

WEBENCH® Power Architect

Project ReportProject : 4305911/2 : PA_Project_303 (modified from 301)Created : 2015-04-22 21:54:18.380Optimize project optFactor=3

Project Summary1. Total System Efficiency 96.732 %2. Total System BOM Count 60.03. Total System Footprint 1.063 kmm24. Total System BOM Cost $12.525. Total System Power Dissipation 659.9 mW

--> Launch WEBENCH Power Architect.

LOAD_1LOAD #1

LM5175

0.79A 24V, 0.8A

SUPPLY_1

LOAD_2LOAD #2

LMR14203X

0.02A 3.3V, 0.1A

SUPPLY_2

23V - 25V 10.0A max

0.81A

SOURCE_DC_1

WEBENCH® Power Architect Project ID : 2 PA_Project_303 (modif ied from 301) Power Architect 2015- 04- 22 21:54:18.380

Power Supplies# Name NSID Description Vout Iout Efficiency Foot-

printCost Design Page

1. SUPPLY_1 LM5175 Switcher : Single Inductor 4-SwitchBuck Boost

24 V 0.8 A 97.6% 950 $11.02 20 4

2. SUPPLY_2 LMR14203X Switcher : Low-profile BuckRegulator, 1.25MHz, up to 300mAload

3.3 V 0.1 A 64% 113 $1.50 21 17

Power Loads# Name VLoad ILoad Description1. LOAD #1 24 V 0.8 A VoutRipple=1%2. LOAD #2 3.3 V 0.1 A VoutRipple=1%

http://webench.ti.com/webench5/power/webench5.cgi?app=powerarchitect&project_id=2

WEBENCH® Power Architect Project


WEBENCH Project Report 2 : PA_Project_303 (modified from 301) April 22, 2015 22:02:14 GMT-07:00

Project Diagram

LOAD_1LOAD #1

LM5175

0.79A 24V, 0.8A

SUPPLY_1

LOAD_2LOAD #2

LMR14203X

0.02A 3.3V, 0.1A

SUPPLY_2

23V - 25V 10.0A max

0.81A

SOURCE_DC_1

WEBENCH® Power Architect Project ID : 2 PA_Project_303 (modif ied from 301) Power Architect 2015- 04- 22 21:54:18.380




Electrical Procurement BOM

Manufacturer Part Number Description Quantity Budgetary Price Footprint(mm2)

Panasonic 35SVPF39M CAPSMT_62_E7 1 $0.50 106Diodes Inc. B230A-13-F SMA 1 $0.09 37Diodes Inc. B240A-13-F SMA 1 $0.09 37Kemet C0603C104K3RACTU 0603 2 $0.01 9Kemet C0603C223K3RACTU 0603 1 $0.01 5Kemet C0805C224K5RACTU 0805 1 $0.02 7TDK C1608C0G1H470J 0603 1 $0.01 5TDK C3216JB1H475K 1206 15 $0.21 33Yageo America CC0805DRNP09BN9R0 0805 1 $0.01 7Yageo America CC0805KRX7R9BB562 0805 1 $0.01 7Bourns CD0603-B0240 Diode_0603 1 $0.10 5Samsung Electro-Mechanics CL10C250JB8NNNC 0603 1 $0.01 5Vishay-Dale CRCW040210K0FKED 0402 1 $0.01 3Vishay-Dale CRCW040214K0FKED 0402 1 $0.01 3Vishay-Dale CRCW0402249KFKED 0402 1 $0.01 3Vishay-Dale CRCW040233K2FKED 0402 1 $0.01 3Vishay-Dale CRCW040263K4FKED 0402 1 $0.01 3Vishay-Dale CRCW040290K9FKED 0402 1 $0.01 3Vishay-Dale CRCW0603100RFKEA 0603 2 $0.01 9Vishay-Dale CRCW060310R0FKEA 0603 1 $0.01 5Vishay-Dale CRCW060320K0FKEA 0603 2 $0.01 9Vishay-Dale CRCW0603576KFKEA 0603 1 $0.01 5Vishay-Dale CRCW060393K1FKEA 0603 1 $0.01 5Texas Instruments CSD17551Q5A TRANS_NexFET_Q5A 1 $0.32 55Texas Instruments CSD18504Q5A TRANS_NexFET_Q5A 1 $0.56 55Texas Instruments CSD18537NQ5A TRANS_NexFET_Q5A 2 $0.46 110Stackpole Electronics Inc CSRN2010FK60L0 2010 1 $0.14 32MuRata GRM155R61A154KE19D 0402 1 $0.01 3MuRata GRM188R71C105KA12D 0603 1 $0.01 5MuRata GRM21BR60J226ME39L 0805 2 $0.05 7MuRata GRM21BR71H105KA12L 0805 1 $0.10 7MuRata GRM31CR71H475KA12L 1206 2 $0.07 22Texas Instruments LM5175PWPR PWP0028F_N 1 $4.25 98Texas Instruments LMR14203XMKE/NOPB MK06A 1 $1.04 11NXP Semiconductor PMEG6010CEH,115 SOD-123F 3 $0.11 35Bourns SDR0403-5R6ML SDR0403 1 $0.18 28Bourns SRN6045-101M SRN6045 1 $0.16 64Nichicon UUD1V680MCL1GS SM_RADIAL_6.3BMM 1 $0.11 80Total 60 $12.52 925




WEBENCH ® Design Report

Design : 4305911/20 LM5175PWPRLM5175PWPR 23.0V-25.0V to 24.00V @ 0.8A

VinMin = 23.0VVinMax = 25.0VVout = 24.0VIout = 0.8A

Device = LM5175PWPRTopology = Buck_BoostCreated = 4/22/15 9:54:17 PMBOM Cost = $11.02Footprint = 950.0 mm2

BOM Count = 51Total Pd = 0.47W

Cbias1.0 µF

Cboot1100.0 nF

Cboot2100.0 nF

Cbulk68.0 µF340.0 mOhm

Ccomp5.6 nF

Ccomp29.0 pF

Ccs47.0 pF217.348 mOhm

Cf220.0 nF46.0 mOhm

Cin4.7 µF3.0 mOhm

Cout39.0 µF30.0 mOhm

Coutx4.7 µF3.918 mOhmQty= 5



Cslope25.0 pF

Css22.0 nF

Cvcc1.0 µF11.0 mOhm

D2VF@Io= 500.0 mVVRRM= 40.0 V


Dboot1VF@Io= 570.0 mVVRRM= 60.0 V

Dboot2VF@Io= 570.0 mVVRRM= 60.0 V

DfVF@Io= 570.0 mVVRRM= 60.0 V

L15.6 µH100.0 mOhm

M1VdsMax= 40.0 VIdsMax= 50.0 Amps




Rcomp90.9 kOhm63.0 mW

Rcsg100.0 Ohm100.0 mW

Rcsp100.0 Ohm100.0 mW

Rf10.0 Ohm100.0 mW

Rfbb20.0 kOhm100.0 mW

Rfbt576.0 kOhm100.0 mW

Rpg20.0 kOhm100.0 mW

Rsense60.0 mOhm1.0 W

Rt63.4 kOhm63.0 mW

Ruvb14.0 kOhm63.0 mW

Ruvt249.0 kOhm63.0 mW

LM5175PWP

EN

VIN

VINSNS

MODE

DITH

RT_SYNC

SLOPE

SS

COMP

AGND

FB

VOSNS

ISNS-

ISNS+

CSG

CS

PGOOD

SW2

HDRV2

BOOT2

LDRV2

PGND

VCC

BIAS

LDRV1

BOOT1

HDRV1

SW1

PAD

U1

Rmode93.1 kOhm100.0 mW

_CSG_1

_CSG_2

_HDRV1_1

_HDRV1_2

_HDRV2_1

_HDRV2_2

_ISNS+ _1

_ISNS+ _2

_ISNS- _1

_ISNS- _2

_LDRV1_1

_LDRV1_2

_LDRV2_1

_LDRV2_2

_RCS_1

_RCS_2

_SW1_1

_SW1_2

_SW2_1

_SW2_2

_VOUT_1

_VOUT_2

Vin

Iout

Electrical BOM# Name Manufacturer Part Number Properties Qty Price Footprint

1. Cbias MuRata GRM21BR71H105KA12LSeries= X7R

Cap= 1.0 uFVDC= 50.0 VIRMS= 0.0 A

1 $0.100805 7 mm2

2. Cboot1 Kemet C0603C104K3RACTUSeries= X7R

Cap= 100.0 nFVDC= 25.0 VIRMS= 0.0 A

1 $0.010603 5 mm2

3. Cboot2 Kemet C0603C104K3RACTUSeries= X7R


1 $0.010603 5 mm2

4. Cbulk Nichicon UUD1V680MCL1GSSeries= uD

Cap= 68.0 uFESR= 340.0 mOhmVDC= 35.0 VIRMS= 280.0 mA

1 $0.11

SM_RADIAL_6.3BMM 80mm2

5. Ccomp Yageo America CC0805KRX7R9BB562Series= X7R


1 $0.010805 7 mm2

6. Ccomp2 Yageo America CC0805DRNP09BN9R0Series= C0G/NP0

Cap= 9.0 pFVDC= 50.0 VIRMS= 0.0 A

1 $0.010805 7 mm2

7. Ccs TDK C1608C0G1H470JSeries= C0G/NP0

Cap= 47.0 pFESR= 217.348 mOhmVDC= 50.0 VIRMS= 0.0 A

1 $0.010603 5 mm2

8. Cf Kemet C0805C224K5RACTUSeries= X7R

Cap= 220.0 nFESR= 46.0 mOhmVDC= 50.0 VIRMS= 2.65 A

1 $0.020805 7 mm2

9. Cin MuRata GRM31CR71H475KA12LSeries= X7R

Cap= 4.7 uFESR= 3.0 mOhmVDC= 50.0 VIRMS= 4.98 A

1 $0.07

1206 11 mm2

http://search.murata.co.jp/Ceramy/PnsearchViewAction.do?HnOFG%3DON%26HnNFG%3DON%26SEL%5FCNT%3D50%26sLang%3Den%26sKey%3DGRM21BR71H105KA12L%26x%3D9%26y%3D9%26search%3Dstartwith

http://www.kemet.com/kemet/web/homepage/kechome.nsf/vapubfiles/F3102%5FY5V.pdf/%24file/F3102%5FY5V.pdf


http://products.nichicon.co.jp/en/pdf/XJA043/e%2Dud.pdf

http://www.yageo.com/documents/recent/UPY%2DGPHC%5FX7R%5F6.3V%2Dto%2D50V%5F7.pdf

http://www.yageo.com/documents/recent/UPY%2DGP%5FNP0%5F16V%2Dto%2D50V%5F8.pdf

http://www.tdk.co.jp/tefe02/e1885%5Fc.pdf

http://www.kemet.com/kemet/web/homepage/kechome.nsf/file/Partial%20Copy%20%2D%20Ceramic%20Surface%20Mount%20Capacitors/%24file/F3102%5FCE.pdf

http://search.murata.co.jp/Ceramy/PnsearchViewAction.do?HnOFG%3DON%26HnNFG%3DON%26SEL%5FCNT%3D50%26sLang%3Den%26sKey%3DGRM31CR71H475KA12L%26x%3D9%26y%3D9%26search%3Dstartwith




# Name Manufacturer Part Number Properties Qty Price Footprint

10. Cout Panasonic 35SVPF39MSeries= 1273


1 $0.50

CAPSMT_62_E7 106 mm2

11. Coutx TDK C3216JB1H475KSeries= 274


5 $0.21

1206 11 mm2

12. Coutx2 TDK C3216JB1H475KSeries= 274


5 $0.21

1206 11 mm2

13. Coutx3 TDK C3216JB1H475KSeries= 274


5 $0.21

1206 11 mm2

14. Cslope Samsung Electro-Mechanics

CL10C250JB8NNNCSeries= C0G/NP0

Cap= 25.0 pFVDC= 50.0 VIRMS= 0.0 A

1 $0.010603 5 mm2

15. Css Kemet C0603C223K3RACTUSeries= X7R


1 $0.010603 5 mm2

16. Cvcc MuRata GRM188R71C105KA12DSeries= X7R


1 $0.010603 5 mm2

17. D2 Diodes Inc. B240A-13-F VF@Io= 500.0 mVVRRM= 40.0 V

1 $0.09

SMA 37 mm2

18. D3 Diodes Inc. B230A-13-F VF@Io= 500.0 mVVRRM= 30.0 V

1 $0.09

SMA 37 mm2

19. Dboot1 NXP Semiconductor PMEG6010CEH,115 VF@Io= 570.0 mVVRRM= 60.0 V

1 $0.11

SOD-123F 12 mm2

20. Dboot2 NXP Semiconductor PMEG6010CEH,115 VF@Io= 570.0 mVVRRM= 60.0 V

1 $0.11

SOD-123F 12 mm2

21. Df NXP Semiconductor PMEG6010CEH,115 VF@Io= 570.0 mVVRRM= 60.0 V

1 $0.11

SOD-123F 12 mm2

22. L1 Bourns SDR0403-5R6ML L= 5.6 µHDCR= 100.0 mOhm

1 $0.18

SDR0403 28 mm2

23. M1 Texas Instruments CSD18504Q5A VdsMax= 40.0 VIdsMax= 50.0 Amps

1 $0.56

TRANS_NexFET_Q5A 55mm2

24. M2 Texas Instruments CSD18537NQ5A VdsMax= 60.0 VIdsMax= 50.0 Amps

1 $0.46


25. M3 Texas Instruments CSD17551Q5A VdsMax= 30.0 VIdsMax= 48.0 Amps

1 $0.32


26. M4 Texas Instruments CSD18537NQ5A VdsMax= 60.0 VIdsMax= 50.0 Amps

1 $0.46


27. Rcomp Vishay-Dale CRCW040290K9FKEDSeries= CRCW..e3

Res= 90.9 kOhmPower= 63.0 mWTolerance= 1.0%

1 $0.010402 3 mm2

http://industrial.panasonic.com/www%2Ddata/pdf/AAB8000/AAB8000CE1.pdf




http://www.samsungsem.com/servlet/FileDownload?type%3Dspec%26file%3DCL10C250JB8NNNC.pdf


http://search.murata.co.jp/Ceramy/PnsearchViewAction.do?HnOFG%3DON%26HnNFG%3DON%26SEL%5FCNT%3D50%26sLang%3Den%26sKey%3DGRM188R71C105KA12D%26x%3D9%26y%3D9%26search%3Dstartwith

http://www.diodes.com/datasheets/ds13004.pdf

http://www.diodes.com/datasheets/ds13004.pdf

http://www.nxp.com/documents/data%5Fsheet/PMEG6010CEH%5FPMEG6010CEJ.pdf



http://www.bourns.com/data/global/pdfs/SDR0403.pdf

http://www.ti.com/lit/ds/symlink/csd18504q5a.pdf

http://www.ti.com/lit/ds/symlink/csd18537nq5a.pdf

http://www.ti.com/lit/ds/symlink/csd17551q5a.pdf

http://www.ti.com/lit/ds/symlink/csd18537nq5a.pdf

http://www.vishay.com/docs/20035/dcrcwe3.pdf




# Name Manufacturer Part Number Properties Qty Price Footprint

28. Rcsg Vishay-Dale CRCW0603100RFKEASeries= CRCW..e3

Res= 100.0 OhmPower= 100.0 mWTolerance= 1.0%

1 $0.010603 5 mm2

29. Rcsp Vishay-Dale CRCW0603100RFKEASeries= CRCW..e3


1 $0.010603 5 mm2

30. Rf Vishay-Dale CRCW060310R0FKEASeries= CRCW..e3


1 $0.010603 5 mm2

31. Rfbb Vishay-Dale CRCW060320K0FKEASeries= CRCW..e3


1 $0.010603 5 mm2

32. Rfbt Vishay-Dale CRCW0603576KFKEASeries= CRCW..e3


1 $0.010603 5 mm2

33. Rmode Vishay-Dale CRCW060393K1FKEASeries= CRCW..e3


1 $0.010603 5 mm2

34. Rpg Vishay-Dale CRCW060320K0FKEASeries= CRCW..e3


1 $0.010603 5 mm2

35. Rsense Stackpole Electronics Inc CSRN2010FK60L0Series= ?

Res= 60.0 mOhmPower= 1.0 WTolerance= 1.0%

1 $0.14

2010 32 mm2

36. Rt Vishay-Dale CRCW040263K4FKEDSeries= CRCW..e3


1 $0.010402 3 mm2

37. Ruvb Vishay-Dale CRCW040214K0FKEDSeries= CRCW..e3


1 $0.010402 3 mm2

38. Ruvt Vishay-Dale CRCW0402249KFKEDSeries= CRCW..e3


1 $0.010402 3 mm2

39. U1 Texas Instruments LM5175PWPR Switcher 1 $4.25

PWP0028F_N 98 mm2

M3 ThetaJA

Vin= 23.0V

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Output Current (A)

50.999999995

50.999999996

50.999999997

50.999999998

50.999999999

51.000000000

51.000000001

51.000000002

51.000000003

51.000000004

M3

Th

etaJ

A(d

egC

/W)

SW Ipk

Vin= 23.0V Vin= 24.0V Vin= 25.0V

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Output Current (A)

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

1.1

SW I

pk

(A)








http://www.seielect.com/Catalog/SEI-csr.pdf




http://www.ti.com/product/lm5175




D2 Pd

Vin= 23.0V Vin= 24.0V Vin= 25.0V

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Output Current (A)

- 0.000000005

- 0.000000004

- 0.000000003

- 0.000000002

- 0.000000001

0.000000000

0.000000001

0.000000002

0.000000003

0.000000004

0.000000005

D2

Pd

(W)

Rsense Pd

Vin= 23.0V Vin= 24.0V Vin= 25.0V

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Output Current (A)

0.00000

0.00025

0.00050

0.00075

0.00100

0.00125

0.00150

0.00175

0.00200

Rse

nse

Pd

(W)

Cout IRMS

Vin= 23.0V Vin= 24.0V Vin= 25.0V

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Output Current (A)

0.00000.00250.00500.00750.01000.01250.01500.01750.02000.02250.02500.02750.03000.03250.03500.03750.04000.04250.04500.04750.0500

Co

ut

IRM

S(A

)

Cin Pd

Vin= 23.0V Vin= 24.0V Vin= 25.0V

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Output Current (A)

0.000000

0.000005

0.000010

0.000015

0.000020

0.000025

0.000030

0.000035

0.000040

0.000045

0.000050

0.000055

0.000060

0.000065

0.000070

0.000075

Cin

Pd

(W)

M2 PdSw

Vin= 24.0V Vin= 25.0V

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Output Current (A)

0.0025

0.0050

0.0075

0.0100

0.0125

0.0150

0.0175

0.0200

0.0225

M2

Pd

Sw(W

)

M1 ThetaJA

Vin= 24.0V Vin= 25.0V

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Output Current (A)

50.999999995

50.999999996

50.999999997

50.999999998

50.999999999

51.000000000

51.000000001

51.000000002

51.000000003

51.000000004

M1

Th

etaJ

A(d

egC

/W)




L Ipp

Vin= 23.0V Vin= 24.0V Vin= 25.0V

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Output Current (A)

0.00

0.05

0.10

0.15

0.20

0.25

0.30

0.35

0.40

0.45

0.50

L Ip

p(A

)M1 Pd

Vin= 23.0V Vin= 24.0V Vin= 25.0V

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Output Current (A)

0.0000

0.0025

0.0050

0.0075

0.0100

0.0125

0.0150

0.0175

0.0200

0.0225

0.0250

0.0275

0.0300

0.0325

0.0350

0.0375

M1

Pd

(W)

M4 PdSw

Vin= 23.0V

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Output Current (A)

- 0.000000005

- 0.000000004

- 0.000000003

- 0.000000002

- 0.000000001

0.000000000

0.000000001

0.000000002

0.000000003

0.000000004

0.000000005

M4

Pd

Sw(W

)

Gain Marg

Vin= 23.0V Vin= 24.0V Vin= 25.0V

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Output Current (A)

- 57.5

- 55.0

- 52.5

- 50.0

- 47.5

- 45.0

- 42.5

- 40.0

- 37.5

- 35.0

- 32.5

- 30.0

Gai

n M

arg

(dB

)

Cout Pd

Vin= 23.0V Vin= 24.0V Vin= 25.0V

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Output Current (A)

0.000000

0.000025

0.000050

0.000075

0.000100

0.000125

0.000150

0.000175

0.000200

0.000225

Co

ut

Pd

(W)

M2 Irms

Vin= 24.0V Vin= 25.0V

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Output Current (A)

0.00

0.01

0.02

0.03

0.04

0.05

0.06

0.07

0.08

0.09

0.10

0.11

0.12

0.13

0.14

0.15

0.16

M2

Irm

s(A

)




M4 Irms

Vin= 23.0V

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Output Current (A)

0.50

0.75

1.00

1.25

1.50

1.75

2.00

2.25

2.50

2.75

3.00

3.25

3.50

3.75

M4

Irm

s(A

)Iin Avg

Vin= 23.0V Vin= 24.0V Vin= 25.0V

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Output Current (A)

0.05

0.10

0.15

0.20

0.25

0.30

0.35

0.40

0.45

0.50

0.55

0.60

0.65

0.70

0.75

0.80

0.85

0.90

Iin

Avg

(A)

Coutx IRMS

Vin= 23.0V Vin= 24.0V Vin= 25.0V

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Output Current (A)

0.000

0.005

0.010

0.015

0.020

0.025

0.030

0.035

0.040

0.045

0.050

0.055

0.060

0.065

0.070

0.075

0.080

Co

utx

IR

MS(

A)

IC Tj

Vin= 23.0V Vin= 24.0V Vin= 25.0V

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Output Current (A)

39.35

39.40

39.45

39.50

39.55

39.60

39.65

39.70

39.75

39.80

39.85

39.90

39.95

40.00

IC T

j(d

egC

)

M1 TjOP

Vin= 24.0V Vin= 25.0V

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Output Current (A)

30.030.130.230.330.430.530.630.730.830.931.031.131.231.331.431.531.631.731.831.9

M1

TjO

P(d

egC

)

M3 TjOP

Vin= 23.0V

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Output Current (A)

30.0

30.1

30.2

30.3

30.4

30.5

30.6

30.7

30.8

30.9

31.0

31.1

31.2

31.3

31.4

31.5

31.6

31.7

M3

TjO

P(d

egC

)




L Pd

Vin= 23.0V Vin= 24.0V Vin= 25.0V

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Output Current (A)

0.0000.0050.0100.0150.0200.0250.0300.0350.0400.0450.0500.0550.0600.0650.0700.0750.0800.0850.0900.095

L P

d(W

)M1 PdCond

Vin= 23.0V Vin= 24.0V Vin= 25.0V

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Output Current (A)

0.00000.00050.00100.00150.00200.00250.00300.00350.00400.00450.00500.00550.00600.00650.00700.00750.00800.00850.00900.0095

M1

Pd

Co

nd

(W)

Duty Cycle

Vin= 23.0V Vin= 24.0V Vin= 25.0V

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Output Current (A)

0

10

20

30

40

50

60

70

80

90

100

Du

ty C

ycle

(%)

M4 Pd

Vin= 23.0V Vin= 24.0V Vin= 25.0V

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Output Current (A)

0.000

0.025

0.050

0.075

0.100

0.125

0.150

0.175

0.200

0.225

0.250

M4

Pd

(W)

M2 PdCond

Vin= 24.0V Vin= 25.0V

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Output Current (A)

0.000000

0.000025

0.000050

0.000075

0.000100

0.000125

0.000150

0.000175

0.000200

0.000225

0.000250

0.000275

0.000300

0.000325

0.000350

0.000375

M2

Pd

Co

nd

(W)

M4 ThetaJA

Vin= 23.0V

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Output Current (A)

49.999999995

49.999999996

49.999999997

49.999999998

49.999999999

50.000000000

50.000000001

50.000000002

50.000000003

50.000000004

M4

Th

etaJ

A(d

egC

/W)




D3 Pd

Vin= 23.0V Vin= 24.0V Vin= 25.0V

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Output Current (A)

- 0.000000005

- 0.000000004

- 0.000000003

- 0.000000002

- 0.000000001

0.000000000

0.000000001

0.000000002

0.000000003

0.000000004

0.000000005

D3

Pd

(W)

M3 PdCond

Vin= 23.0V Vin= 24.0V Vin= 25.0V

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Output Current (A)

0.0000

0.0005

0.0010

0.0015

0.0020

0.0025

0.0030

0.0035

0.0040

0.0045

0.0050

0.0055

0.0060

0.0065

M3

Pd

Co

nd

(W)

Efficiency

Vin= 23.0V Vin= 24.0V Vin= 25.0V

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Output Current (A)

84

85

86

87

88

89

90

91

92

93

94

95

96

97

98

Eff

icie

ncy

(%)

Coutx Pd

Vin= 23.0V Vin= 24.0V Vin= 25.0V

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Output Current (A)

0.000000

0.000001

0.000002

0.000003

0.000004

0.000005

0.000006

0.000007

0.000008

0.000009

0.000010

0.000011

0.000012

0.000013

0.000014

0.000015

Co

utx

Pd

(W)

M2 Rdson

Vin= 24.0V Vin= 25.0V

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Output Current (A)

0.014559995

0.014559996

0.014559997

0.014559998

0.014559999

0.014560000

0.014560001

0.014560002

0.014560003

0.014560004

M2

Rd

son

(Oh

m)

M4 PdCond

Vin= 23.0V

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Output Current (A)

0.000

0.025

0.050

0.075

0.100

0.125

0.150

0.175

0.200

M4

Pd

Co

nd

(W)




M2 ThetaJA

Vin= 24.0V Vin= 25.0V

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Output Current (A)

49.999999995

49.999999996

49.999999997

49.999999998

49.999999999

50.000000000

50.000000001

50.000000002

50.000000003

50.000000004

M2

Th

etaJ

A(d

egC

/W)

M1 Rdson

Vin= 24.0V Vin= 25.0V

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Output Current (A)

0.009799995

0.009799996

0.009799997

0.009799998

0.009799999

0.009800000

0.009800001

0.009800002

0.009800003

0.009800004

0.009800005

M1

Rd

son

(Oh

m)

M4 Rdson

Vin= 23.0V

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Output Current (A)

0.014559995

0.014559996

0.014559997

0.014559998

0.014559999

0.014560000

0.014560001

0.014560002

0.014560003

0.014560004

M4

Rd

son

(Oh

m)

M2 Pd

Vin= 23.0V Vin= 24.0V Vin= 25.0V

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Output Current (A)

0.0000

0.0025

0.0050

0.0075

0.0100

0.0125

0.0150

0.0175

0.0200

0.0225

M2

Pd

(W)

Pout

Vin= 23.0V Vin= 24.0V Vin= 25.0V

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Output Current (A)

123456789

1011121314151617181920

Po

ut(

W)

M3 Rdson

Vin= 23.0V

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Output Current (A)

0.009799995

0.009799996

0.009799997

0.009799998

0.009799999

0.009800000

0.009800001

0.009800002

0.009800003

0.009800004

0.009800005

M3

Rd

son

(Oh

m)




M1 PdSw

Vin= 24.0V Vin= 25.0V

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Output Current (A)

0.0025

0.0050

0.0075

0.0100

0.0125

0.0150

0.0175

0.0200

0.0225

0.0250

0.0275

0.0300

M1

Pd

Sw(W

)Total Pd

Vin= 23.0V Vin= 24.0V Vin= 25.0V

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Output Current (A)

0.300

0.325

0.350

0.375

0.400

0.425

0.450

0.475

0.500

0.525

0.550

0.575

0.600

0.625

0.650

0.675

To

tal

Pd

(W)

IC Pd

Vin= 23.0V Vin= 24.0V Vin= 25.0V

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Output Current (A)

0.3075

0.3100

0.3125

0.3150

0.3175

0.3200

0.3225

0.3250

0.3275

IC P

d(W

)

M3 PdSw

Vin= 23.0V

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Output Current (A)

0.00050

0.00075

0.00100

0.00125

0.00150

0.00175

0.00200

0.00225

0.00250

0.00275

0.00300

0.00325

0.00350

0.00375

0.00400

M3

Pd

Sw(W

)

M1 Irms

Vin= 24.0V Vin= 25.0V

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Output Current (A)

0.05

0.10

0.15

0.20

0.25

0.30

0.35

0.40

0.45

0.50

0.55

0.60

0.65

0.70

0.75

0.80

M1

Irm

s(A

)

L1 Irms

Vin= 23.0V Vin= 24.0V Vin= 25.0V

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Output Current (A)

0.000.050.100.150.200.250.300.350.400.450.500.550.600.650.700.750.800.850.900.951.00

L1 I

rms(

A)




Low Freq Gain

Vin= 23.0V Vin= 24.0V Vin= 25.0V

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Output Current (A)

55.75

56.00

56.25

56.50

56.75

57.00

57.25

57.50

Low

Fre

q G

ain

(dB

)M3 Irms

Vin= 23.0V

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Output Current (A)

0.02

0.03

0.04

0.05

0.06

0.07

0.08

0.09

0.10

0.11

0.12

0.13

0.14

0.15

0.16

0.17

0.18

M3

Irm

s(A

)

M2 TjOP

Vin= 24.0V Vin= 25.0V

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Output Current (A)

30.2

30.3

30.4

30.5

30.6

30.7

30.8

30.9

31.0

31.1

M2

TjO

P(d

egC

)

M4 TjOP

Vin= 23.0V

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Output Current (A)

30.2

30.3

30.4

30.5

30.6

30.7

30.8

30.9

31.0

31.1

31.2

M4

TjO

P(d

egC

)

Vout p- p

Vin= 23.0V Vin= 24.0V Vin= 25.0V

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Output Current (A)

0.000

0.001

0.002

0.003

0.004

0.005

0.006

0.007

0.008

0.009

0.010

0.011

0.012

0.013

Vo

ut

p-

p(V

)

M3 Pd

Vin= 23.0V Vin= 24.0V Vin= 25.0V

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Output Current (A)

0.0000

0.0005

0.0010

0.0015

0.0020

0.0025

0.0030

0.0035

0.0040

0.0045

0.0050

0.0055

0.0060

0.0065

M3

Pd

(W)




Cin IRMS

Vin= 23.0V Vin= 24.0V Vin= 25.0V

0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8

Output Current (A)

0.00

0.01

0.02

0.03

0.04

0.05

0.06

0.07

0.08

0.09

0.10

0.11

0.12

0.13

0.14

0.15

0.16

Cin

IR

MS(

A)

Loop Response

Gain Phase + 180

10 1,000 100,000

Frequency

- 125

- 100

- 75

- 50

- 25

0

25

50

Gai

n(d

B)

- 200

- 175

- 150

- 125

- 100

- 75

- 50

- 25

0

25

50

75

100

125

150

175

Ph

ase + 1

80

(deg

ree)

Operating Values# Name Value Category Description1. Cin IRMS 156.127 mA Current Input capacitor RMS ripple current2. Cout IRMS 31.715 mA Current Output capacitor RMS ripple current3. Coutx IRMS 50.793 mA Current Output capacitor_x RMS ripple current4. Iin Avg 786.97 mA Current Average input current5. L Ipp 285.82 mA Current Peak-to-peak inductor ripple current6. L1 Irms 804.243 mA Current Inductor ripple current7. M1 Irms 783.976 mA Current MOSFET RMS ripple current8. M2 Irms 159.319 mA Current MOSFET RMS ripple current9. SW Ipk 0.0 A Current Peak switch current

10. BOM Count 51 General Total Design BOM count11. FootPrint 950.0 mm2 General Total Foot Print Area of BOM components12. Frequency 392.804 kHz General Switching frequency13. IC Tolerance 0.0 V General IC Feedback Tolerance14. M1 Rdson 9.8 mOhm General Drain-Source On-resistance15. M1 ThetaJA 51.0 degC/W General MOSFET junction-to-ambient thermal resistance16. M2 Rdson 14.56 mOhm General Drain-Source On-resistance17. M2 ThetaJA 50.0 degC/W General MOSFET junction-to-ambient thermal resistance18. Pout 19.2 W General Total output power19. Total BOM $11.02 General Total BOM Cost20. Vout OP 24.0 V Op_Point Operational Output Voltage21. Cross Freq 1.601 kHz Op_point Bode plot crossover frequency22. Duty Cycle 96.034 % Op_point Duty cycle23. Efficiency 97.589 % Op_point Steady state efficiency24. Gain Marg -36.16 dB Op_point Bode Plot Gain Margin25. IC Tj 39.995 degC Op_point IC junction temperature26. ICThetaJA 30.5 degC/W Op_point IC junction-to-ambient thermal resistance27. IOUT_OP 800.0 mA Op_point Iout operating point28. M1 TjOP 31.855 degC Op_point MOSFET junction temperature29. M2 TjOP 31.129 degC Op_point MOSFET junction temperature30. Phase Marg 75.715 deg Op_point Bode Plot Phase Margin31. VIN_OP 25.0 V Op_point Vin operating point32. Vout p-p 3.416 mV Op_point Peak-to-peak output ripple voltage33. Cin Pd 73.127 µW Power Input capacitor power dissipation34. Cout Pd 30.176 µW Power Output capacitor power dissipation35. Coutx Pd 2.022 µW Power Output capacitor_x power loss36. D2 Pd 0.0 W Power Diode power dissipation37. D3 Pd 0.0 W Power Diode power dissipation38. IC Pd 327.715 mW Power IC power dissipation39. L Pd 80.0 mW Power Inductor power dissipation40. M1 Pd 36.178 mW Power MOSFET power dissipation41. M1 PdCond 6.099 mW Power M1 MOSFET conduction losses42. M1 PdSw 30.08 mW Power M1 MOSFET switching losses43. M2 Pd 22.571 mW Power MOSFET power dissipation44. M2 PdCond 372.975 µW Power M2 MOSFET conduction losses45. M2 PdSw 22.198 mW Power M2 MOSFET switching losses46. M3 Pd 6.272 mW Power M3 MOSFET total power dissipation47. M3 PdCond 6.272 mW Power M3 MOSFET conduction losses48. M4 Pd 0.0 W Power M4 MOSFET total power dissipation49. Rsense Pd 1.523 mW Power LED Current Rsns Power Dissipation50. Total Pd 474.346 mW Power Total Power Dissipation51. Low Freq Gain 56.697 dB Unknown Gain at 10Hz




Design Inputs# Name Value Description1. Iout 800.0 m Maximum Output Current2. Iout1 800.0 m Output Current #13. VinMax 25.0 Maximum input voltage4. VinMin 23.0 Minimum input voltage5. Vout 24.0 Output Voltage6. Vout1 24.0 Output Voltage #17. base_pn LM5175 Base Product Number8. source DC Input Source Type9. Ta 30.0 Ambient temperature

Design Assistance1. Tip: Snubbers and/or gate resistors may be required to limit the SW1,2 node switching spikes below the IC and FET abs max ratings.

2. Tip: Slope Capacitor: smaller slope capacitors provide better transition region behavior.

3. LM5175 Product Folder : http://www.ti.com/product/lm5175 : contains the data sheet and other resources.

http://www.ti.com/product/lm5175




WEBENCH ® Design Report

Design : 4305911/21 LMR14203XMKE/NOPBLMR14203XMKE/NOPB 23.0V-25.0V to 3.30V @ 0.1A

VinMin = 23.0VVinMax = 25.0VVout = 3.3VIout = 0.1A

Device = LMR14203XMKE/NOPBTopology = BuckCreated = 4/22/15 9:54:17 PMBOM Cost = $1.50Footprint = 113.0 mm2

BOM Count = 9Total Pd = 0.19W

Cboot150.0 nF

Cin4.7 µF3.0 mOhm

Cout22.0 µF9.0 mOhmQty= 2


L1100.0 µH494.0 mOhm

Rfb110.0 kOhm63.0 mW

Rfb233.2 kOhm63.0 mW

LMR14203XSHDN

VIN

GND

CB

SW

FB

U1

VinMin = 23.0VVinMax = 25.0V

Vout = 3.3VIout = 0.1A

Vin

Iout

Electrical BOM# Name Manufacturer Part Number Properties Qty Price Footprint

1. Cboot MuRata GRM155R61A154KE19DSeries= X5R


1 $0.010402 3 mm2

2. Cin MuRata GRM31CR71H475KA12LSeries= X7R


1 $0.07

1206 11 mm2

3. Cout MuRata GRM21BR60J226ME39LSeries= X5R


2 $0.050805 7 mm2

4. D1 Bourns CD0603-B0240 VF@Io= 550.0 mVVRRM= 45.0 V

1 $0.10Diode_0603 5 mm2

5. L1 Bourns SRN6045-101M L= 100.0 µHDCR= 494.0 mOhm

1 $0.16

SRN6045 64 mm2

6. Rfb1 Vishay-Dale CRCW040210K0FKEDSeries= CRCW..e3


1 $0.010402 3 mm2

7. Rfb2 Vishay-Dale CRCW040233K2FKEDSeries= CRCW..e3


1 $0.010402 3 mm2

8. U1 Texas Instruments LMR14203XMKE/NOPB Switcher 1 $1.04

MK06A 11 mm2

http://search.murata.co.jp/Ceramy/PnsearchViewAction.do?HnOFG%3DON%26HnNFG%3DON%26SEL%5FCNT%3D50%26sLang%3Den%26sKey%3DGRM155R61A154KE19D%26x%3D9%26y%3D9%26search%3Dstartwith

http://search.murata.co.jp/Ceramy/PnsearchViewAction.do?HnOFG%3DON%26HnNFG%3DON%26SEL%5FCNT%3D50%26sLang%3Den%26sKey%3DGRM31CR71H475KA12L%26x%3D9%26y%3D9%26search%3Dstartwith

http://search.murata.co.jp/Ceramy/PnsearchViewAction.do?HnOFG%3DON%26HnNFG%3DON%26SEL%5FCNT%3D50%26sLang%3Den%26sKey%3DGRM21BR60J226ME39L%26x%3D9%26y%3D9%26search%3Dstartwith

http://www.bourns.com/pdfs/SBCD0603%5F1005.pdf

http://www.bourns.com/data/global/pdfs/SRN6045.pdf



http://www.ti.com/product/lmr14203




IC Tj

Vin= 23.0V Vin= 24.0V Vin= 25.0V

0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10

Output Current (A)

38.0

38.5

39.0

39.5

40.0

40.5

41.0

41.5

42.0

42.5

43.0

43.5

44.0

44.5

45.0

45.5

46.0

46.5

IC T

j(d

egC

)Duty Cycle

Vin= 23.0V Vin= 24.0V Vin= 25.0V

0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10

Output Current (A)

8.5

9.0

9.5

10.0

10.5

11.0

11.5

12.0

12.5

13.0

13.5

14.0

14.5

15.0

15.5

16.0

16.5

Du

ty C

ycle

(%)

Cin IRMS

Vin= 23.0V Vin= 24.0V Vin= 25.0V

0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10

Output Current (A)

0.0000

0.0025

0.0050

0.0075

0.0100

0.0125

0.0150

0.0175

0.0200

0.0225

0.0250

0.0275

0.0300

0.0325

0.0350

0.0375

Cin

IR

MS(

A)

IC Ipk

Vin= 23.0V Vin= 24.0V Vin= 25.0V

0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10

Output Current (A)

0.01

0.02

0.03

0.04

0.05

0.06

0.07

0.08

0.09

0.10

0.11

IC I

pk

(A)

L Pd

Vin= 23.0V Vin= 24.0V Vin= 25.0V

0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10

Output Current (A)

0.0000

0.0005

0.0010

0.0015

0.0020

0.0025

0.0030

0.0035

0.0040

0.0045

0.0050

0.0055

L P

d(W

)

D1 Tj

Vin= 23.0V Vin= 24.0V Vin= 25.0V

0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10

Output Current (A)

3031323334353637383940414243444546474849

D1

Tj(

deg

C)




Efficiency

Vin= 23.0V Vin= 24.0V Vin= 25.0V

0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10

Output Current (A)

15

20

25

30

35

40

45

50

55

60

65

Eff

icie

ncy

(%)

Vout p- p

Vin= 23.0V Vin= 24.0V Vin= 25.0V

0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10

Output Current (A)

0.000095

0.000100

0.000105

0.000110

0.000115

0.000120

0.000125

0.000130

0.000135

0.000140

0.000145

0.000150

0.000155

0.000160

0.000165

Vo

ut

p-

p(V

)

Cin Pd

Vin= 23.0V Vin= 24.0V Vin= 25.0V

0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10

Output Current (A)

0.00000000

0.00000025

0.00000050

0.00000075

0.00000100

0.00000125

0.00000150

0.00000175

0.00000200

0.00000225

0.00000250

0.00000275

0.00000300

0.00000325

0.00000350

0.00000375

0.00000400

0.00000425

Cin

Pd

(W)

Cout Pd

Vin= 23.0V Vin= 24.0V Vin= 25.0V

0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10

Output Current (A)

0.00000012

0.00000013

0.00000014

0.00000015

0.00000016

0.00000017

0.00000018

0.00000019

0.00000020

0.00000021

0.00000022

0.00000023

0.00000024

0.00000025

0.00000026

0.00000027

0.00000028

Co

ut

Pd

(W)

M Vds Act

Vin= 23.0V Vin= 24.0V Vin= 25.0V

0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10

Output Current (A)

0.0000

0.0025

0.0050

0.0075

0.0100

0.0125

0.0150

0.0175

0.0200

0.0225

0.0250

0.0275

0.0300

0.0325

0.0350

0.0375

M V

ds

Act

(V)

M Irms

Vin= 23.0V Vin= 24.0V Vin= 25.0V

0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10

Output Current (A)

0.0025

0.0050

0.0075

0.0100

0.0125

0.0150

0.0175

0.0200

0.0225

0.0250

0.0275

0.0300

0.0325

0.0350

0.0375

0.0400

M I

rms(

A)




Pout

Vin= 23.0V Vin= 24.0V Vin= 25.0V

0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10

Output Current (A)

0.000

0.025

0.050

0.075

0.100

0.125

0.150

0.175

0.200

0.225

0.250

0.275

0.300

0.325

Po

ut(

W)

Iin Avg

Vin= 23.0V Vin= 24.0V Vin= 25.0V

0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10

Output Current (A)

0.0025

0.0050

0.0075

0.0100

0.0125

0.0150

0.0175

0.0200

0.0225

Iin

Avg

(A)

Total Pd

Vin= 23.0V Vin= 24.0V Vin= 25.0V

0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10

Output Current (A)

0.07

0.08

0.09

0.10

0.11

0.12

0.13

0.14

0.15

0.16

0.17

0.18

0.19

To

tal

Pd

(W)

Cout IRMS

Vin= 23.0V Vin= 24.0V Vin= 25.0V

0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10

Output Current (A)

0.00525

0.00550

0.00575

0.00600

0.00625

0.00650

0.00675

0.00700

0.00725

0.00750

0.00775

Co

ut

IRM

S(A

)

L Ipp

Vin= 23.0V Vin= 24.0V Vin= 25.0V

0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10

Output Current (A)

0.016

0.017

0.018

0.019

0.020

0.021

0.022

0.023

0.024

0.025

0.026

0.027

L Ip

p(A

)

IC Pd

Vin= 23.0V Vin= 24.0V Vin= 25.0V

0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10

Output Current (A)

0.070

0.075

0.080

0.085

0.090

0.095

0.100

0.105

0.110

0.115

0.120

0.125

0.130

0.135

IC P

d(W

)




Diode Pd

Vin= 23.0V Vin= 24.0V Vin= 25.0V

0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.10

Output Current (A)

0.00000.00250.00500.00750.01000.01250.01500.01750.02000.02250.02500.02750.03000.03250.03500.03750.04000.04250.04500.0475

Dio

de

Pd

(W)

Operating Values# Name Value Category Description1. Cin IRMS 35.523 mA Current Input capacitor RMS ripple current2. Cout IRMS 7.877 mA Current Output capacitor RMS ripple current3. IC Ipk 113.644 mA Current Peak switch current in IC4. Iin Avg 20.621 mA Current Average input current5. L Ipp 27.287 mA Current Peak-to-peak inductor ripple current6. M1 Irms 38.845 mA Current Q Iavg7. BOM Count 9 General Total Design BOM count8. FootPrint 113.0 mm2 General Total Foot Print Area of BOM components9. Frequency 1.2 MHz General Switching frequency

10. IC Tolerance 18.0 mV General IC Feedback Tolerance11. M Vds Act 35.946 mV General Voltage drop across the MosFET12. Pout 330.0 mW General Total output power13. Total BOM $1.5 General Total BOM Cost14. D1 Tj 48.68 degC Op_Point D1 junction temperature15. Vout OP 3.3 V Op_Point Operational Output Voltage16. Cross Freq 15.047 kHz Op_point Bode plot crossover frequency17. Duty Cycle 15.09 % Op_point Duty cycle18. Efficiency 64.011 % Op_point Steady state efficiency19. IC Tj 46.141 degC Op_point IC junction temperature20. ICThetaJA 121.0 degC/W Op_point IC junction-to-ambient thermal resistance21. IOUT_OP 100.0 mA Op_point Iout operating point22. Phase Marg 49.023 deg Op_point Bode Plot Phase Margin23. VIN_OP 25.0 V Op_point Vin operating point24. Vout p-p 162.743 µV Op_point Peak-to-peak output ripple voltage25. Cin Pd 3.786 µW Power Input capacitor power dissipation26. Cout Pd 279.223 nW Power Output capacitor power dissipation27. Diode Pd 46.701 mW Power Diode power dissipation28. IC Pd 133.396 mW Power IC power dissipation29. L Pd 5.434 mW Power Inductor power dissipation30. Total Pd 185.532 mW Power Total Power Dissipation

Design Inputs# Name Value Description1. Iout 100.0 m Maximum Output Current2. Iout1 100.0 m Output Current #13. VinMax 25.0 Maximum input voltage4. VinMin 23.0 Minimum input voltage5. Vout 3.3 Output Voltage6. Vout1 3.3 Output Voltage #17. base_pn LMR14203X Base Product Number8. source DC Input Source Type9. Ta 30.0 Ambient temperature

Design Assistance1. LMR14203X Product Folder : http://www.ti.com/product/lmr14203 : contains the data sheet and other resources.

http://www.ti.com/product/lmr14203




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Documents

WEBENCH Power Architect - edge.rit.eduedge.rit.edu/content/P15051/public/MSD I/Detailed Design Document… · Project Report Project : 4305911/2 : PA_Project_303 (modified from 301)