High Voltage Piezoelectric DC-DC Convertersmmechc5/images/stories/Standard_Products/...PIN 5 (VCMP): Programming Voltage Pin. Applying a voltage between 0 to 2.1Vdc to this pin, the

Micromechatronics, Inc. ; 200 Innovation Blvd. Suite 155; State College, PA; www.mmech.com; Ph: 814-861-5688

1

World’s First Piezoelectric DC-DC Converter

Micromechatronics, Inc. introduces the world’s first High Voltage Piezoelectric Converter product line. Three new reference DC-DC converters are introduced: 2kVdc/4W; 5kVdc/5W; 10kVdc/5W. The converters are operated under input voltages of 8 to 14Vdc. The converters are fully regulated against changes of the input voltage and the output load. Furthermore, the output voltage can be programmed from 0 to 100% through a control 0 – 2.1 V control pin.

This new technology uses magnetic-less, low profile, high efficiency and high power density high voltage piezoelectric transformers. Developed through many years of research, development and commercialization of piezoelectric technology, the new converters provide the most compact and efficient high voltage converting solution.

The use of non-magnetic technology to achieve the high voltage generation, make them ideal for medical, military and space applications where magnetic signature could jeopardize the application reliability.

Applications include: Pulse Generators, Ignition Systems, Laser Power Supplies, Night Vision Devices, Spectrometers, Traveling Wave Tubes (TWTs), etc.

High Voltage Piezoelectric DC-DC Converters

Use of non-magnetic piezoelectric technology

Ultra compact low-profile design

Output voltage programmable from 0 to 100%

Very high efficiency

Three reference modules available: 2kV/4W, 5kV/5W, 10kV/5W

Micromechatronics, Inc.

®


Micromechatronics, Inc. 200 Innovation Blvd, Suite 155 State College, Pennsylvania, 16803 Phone: 814-861-5688 Fax: 814-861-1418 www.mmech.com [email protected] [email protected]


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2 kV - 4 W DC-DC PIEZOELECTRIC CONVERTER

SPECIFICATIONS

PRODUCT RESULTS

Size 95 mm x 19 mm (w/ connectors)

Input Voltage (DC) 8 V to 14 V

Output Voltage (DC) 2 kV

Max Output Power (W) 4 W

Max. Efficiency (%) > 82 %

Control voltage 0 to 2.1 V to reach 0 to 2 kV

Features § Miniature, Surface Mount Construction § Use of Magnetic-less Transformer Technology § Output Power: 4 W max § Wide Input Voltage Regulation (8 Vdc to 14 Vdc) § 0 to 100% Output Programmable § Output Short Circuit and Over Voltage Protected

§ Operating Temperature: -25 oC to +70 oC § Low Ripple: 0.1 % of Vout at full Vout § High Efficiency > 80 % § Programming Voltage: 0 to 2 Vdc § Input and Output Connectors for easy plug

and play integration.

Performance

Load Regulation (VCC = 12V, Vcntr = 2.1V)

0

400

800

1200

1600

2000

2400

0 1 2 3 4 5Output Power [W]

Out

put

Vol

tage

[V

]

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

Eff

icie

ncy

(%)

VoutEfficiency


0

400

800

1200

1600

2000

2400

0 1 2 3 4 5Output Power [W]

Out

put

Vol

tage

[V

]

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

Eff

icie

ncy

(%)

VoutEfficiency

Input Voltage Connector

SM06B-SRSS-TB 6 pins

Output Voltage Connector

SM02B-BHSS-1 2 pins

Piezoelectric Transformer

1 2 3 4 5 6

A

B

95 mm

20 mm

Input Connector § PIN 1 (PGND): Power Ground § PIN 2 (VBAT): Input Voltage, 8 to 14 Vdc. Nominal voltage

is 12 Vdc § PIN 3 SGND: Signal Ground § PIN 4 (STBY): +5V allow on/off control § PIN 5 (VCMP): Programming Voltage Pin. Applying a voltage

between 0 to 2.1Vdc to this pin, the output voltage can be controlled within 0 to 100% Vout max.

§ PIN 6 (DI): Output current detection Output Connector § PIN A (Out): No Connected § PIN B (GND): High Voltage Output


3

Input Voltage Regulation Response

Input Voltage to Output Voltage

0

500

1000

1500

2000

2500

7 8 9 10 11 12 13 14Input Voltage (Vdc)

Out

put

Vol

tage

(V

dc)

Vcntr=1.5V Pout=1WVcntr=1.5V Pout=2WVcntr=1.5V Pout=4WVcntr=2.1V Pout=2WVcntr=2.1V Pout=4W

Input Voltage to Efficiency

50%

55%

60%

65%

70%

75%

80%

85%

90%


Eff

icie

ncy

(%

)


Input Voltage to Ripple

0.0

0.5

1.0

1.5

2.0

7 8 9 10 11 12 13 14

Input Voltage (Vdc)

Rip

ple

[Vp

-p]


Input Voltage to Input Current

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8


Inp

ut C

urr

ent (

A)


Control Voltage Response (Vcc=12V) Control Voltage to Output Voltage

0

500

1000

1500

2000

2500

0.0 0.5 1.0 1.5 2.0 2.5Control Voltage (Vdc)

Out

put

Vol

tage

(V

dc)

Load 2MohmLoad 1MohmLoad 0.5Mohm

Vcc=12Vdc

Control Voltage to Efficiency

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%


Eff

icie

ncy

(%)


Vcc=12Vdc

Control Voltage to Ripple

0.0

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

2.0


Rip

ple

(Vp

-p)


Vcc=12Vdc

Control Voltage to Input Current

0.00

0.05

0.10

0.15

0.20

0.25

0.30

0.35

0.40

0.45

0.50


Inp

ut

Cu

rren

t (A

)


Vcc=12Vdc


4


SPECIFICATIONS

PRODUCT RESULTS

Size 135 mm x 35 mm (w/connectors)






Features § Miniature, Surface Mount Construction § Use of magnetic-less transformer technology § Output Power: 5 W max § Wide input voltage regulated (8 Vdc to 14 Vdc) § 0 to 100% Output Programmable § Output Short Circuit and Over Voltage Protected

§ Operating Temperature: -25 oC to +70 oC § Low Ripple: 0.1 % of Vout at full Vout § High Efficiency > 80 % § Programming Voltage: 0 to 2 Vdc § Input and output connector for easy plug


Performance


0

1000

2000

3000

4000

5000

6000

0 1 2 3 4 5 6

Output Power [W]

Out

put

Vol

tage

[V

]

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

Eff

icie

ncy

(%)

VoutEfficiency


0

1000

2000

3000

4000

5000

6000

0 1 2 3 4 5 6

Output Power [W]

Out

put V

olta

ge [V

]

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

Eff

icie

ncy

(%

)

VoutEfficiency




SM02B-BHSS-1 2 pins


1 2 3 4 5 6

A

B

135 mm

35 mm






5



0

1,000

2,000

3,000

4,000

5,000

6,000


Out

put

Vol

tage

(V

dc)

Load 10Mohm Vc=1.3VLoad 5Mohm Vc=1.3VLoad 2.5Mohm Vc=1.3VLoad 10Mohm Vc=2.1VLoad 5Mohm Vc=2.1V


50%

55%

60%

65%

70%

75%

80%

85%

90%


Eff

icie

ncy

(%)



0

2

4

6

8

10

7 8 9 10 11 12 13 14Input Voltage (V)

Rip

ple

(Vp

-p)



0.0

0.2

0.4

0.6

0.8

1.0


Inp

ut

Cu

rren

t (A

)


Control Voltage Response (Vcc=12V)

Control Voltage to Output Voltage

0

1,000

2,000

3,000

4,000

5,000

6,000


Out

put

Vol

tage

(V

dc)


Vcc=12 Vdc


0%

10%

20%

30%

40%

50%

60%

70%

80%

90%


Eff

icie

ncy

(%)


Vcc=12 Vdc

Control Voltage to Ripple (VCC 12V)

0

2

4

6

8

10


Rip

ple

(Vp

-p)

Load 10Mohm

Load 5MohmLoad 2.5Mohm


0.0

0.1

0.2

0.3

0.4

0.5

0.6


Inp

ut

Cu

rren

t (A

)


Vcc = 12 Vdc


6


SPECIFICATIONS

PRODUCT RESULTS

Size 150 mm x 35 mm (w/ connectors)






Features § Miniature, Surface Mount Construction § Use of magnetic-less transformer technology § Output Power: 5 W max § Wide input voltage regulated (8 Vdc to 14 Vdc) § 0 to 100% Output Programmable § Output Short Circuit and Over Voltage Protected

§ Operating Temperature: -25 oC to +70 oC § Low Ripple: 0.1 % of Vout at full Vout § High Efficiency > 80 % § Programming Voltage: 0 to 2 Vdc § Input and output connector for easy plug


Performance


0

1000

2000

3000

4000

5000

60007000

8000

9000

10000

11000

0 1 2 3 4 5 6

Output Power [W]

Out

put

Vol

tage

[V

]

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

Eff

icie

ncy

(%)

VoutEfficiency


0

1000

2000

3000

4000

5000

6000

70008000

9000

10000

11000

0 1 2 3 4 5 6

Output Power [W]

Out

put

Vol

tage

[V

]

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

Eff

icie

ncy

(%)

VoutEfficiency




SM02B -BHSS-1 2 pins


1 2 3 4 5 6

A

B

150 mm

35 mm






7



0

2,000

4,000

6,000

8,000

10,000

12,000


Out

put V

olta

ge (V

dc)

Load 40Mohm Vc=1.4VLoad 20Mohm Vc=1.4VLoad 10Mohm Vc=1.4VLoad 40Mohm Vc=1.9VLoad 20Mohm Vc=1.9V


45%

50%

55%

60%

65%

70%

75%

80%

85%


Eff

icie

ncy

(%)



0

2

4

6

8

10

12

14

16


Rip

ple

(Vp

-p)



0.0

0.2

0.4

0.6

0.8

1.0


Inp

ut

Cu

rren

t (A

)


Control Voltage Response (Vcc=12V)

Control Voltage to Output Voltage

0

2,000

4,000

6,000

8,000

10,000

12,000

0.0 0.5 1.0 1.5 2.0Control Voltage (Vdc)

Ou

tpu

t Vo

ltag

e (V

dc)

Load 40Mohm

Load 20MohmLoad 10Mohm

Vcc=12Vdc


0%

10%

20%

30%

40%

50%

60%

70%

80%

90%


Eff

icie

ncy

(%)

Load 40MohmLoad 20MohmLoad 10Mohm

Vcc=12Vdc

Control Voltage to Ripple

0

2

4

6

8

10

12

14

16


Rip

ple

(Vp

-p)


Vcc=12Vdc


0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.0 0.5 1.0 1.5 2.0

Control Voltage (Vdc)

Inp

ut

Cu

rren

t (A

)


Vcc=12Vdc


8

Piezoelectricity Piezoelectricity is the ability of some materials to generate an electric potential in response to an applied mechanical stress. The word “piezoelectricity” is derived from the Greek piezein, which means to squeeze or press. The piezoelectric effect is reversible in that materials exhibiting the direct piezoelectric effect (the production of electricity when stress is applied) also exhibit the converse piezoelectric effect (the production of stress and/or strain when an electric field is applied).

P

FExt

FExt

V P

FExt

FExt

V

Direct effect with the piezoelectric

material in open circuit.

P

S

S

+VDC

-P 0V

∼S

∼S

∼VP

Inverse effect. Static (in the middle) and dynamic

(right) operation in the inverse effect Piezoelectric Transformers. The use of acoustic energy for converting electrical signals Piezoelectric transformers combine both the direct and the converse piezoelectric effects. Basically, a piezoelectric transformer consists of an input section and an output section. When the input section is driven by an AC input voltage, a vibration is established in the ceramic body due to the direct piezoelectric effect. This vibration is extended to the output section which in turns generates an output voltage. If the piezoelectric transformer is driven in the neighborhood of its resonance frequency, very efficient electrical to electrical conversion is achieved. Through specific design of the input and output section, piezoelectric transformers can be designed for step-up or step-down transformation with efficiencies higher than 95%. Piezoelectric transformers do not require winding electrodes and all the entire ceramic material is used in the acoustic transfer, thus providing a higher power density than magnetic transformers. Consequently, weight and size is greatly reduced. Furthermore, piezoelectric materials are made of non-magnetic with the significant benefit for applications sensitive to EMI radiation. This is the core technology used in Micromechatronics’ new DC-DC piezoelectric-based high voltage converters. The new DC-DC converters include all the driving electronic components as well as output voltage rectifying parts to achieve a widely input voltage and output load regulated units.

Low Voltage

Mechanical Vibration

(Resonance) High

Voltage

Inverse Effect

Direct Effect

Transformation mechanism used by piezoelectric

transformers

5 5.5 6 6.5 7

x 104

0

25

50

75

100

125

150

Frequency [Hz]

PT

-Gai

n

PT

- G

ain

60 55

Frequency [Hz] 50 65 70

fr fa

100

95

Efficiency (%

)

90

85

80

Frequency and load response of a typical piezoelectric

transformer

Catalogue DC-DC High Voltage Converters – March 08


®

Documents

High Voltage Piezoelectric DC-DC Convertersmmechc5/images/stories/Standard_Products/...PIN 5 (VCMP): Programming Voltage Pin. Applying a voltage between 0 to 2.1Vdc to this pin, the