800B Data Sheet P/N 94095-10 · Card Edge @ 71°C 980 W Operating Temperature Measured at Card Edge -40 85 °C Storage Temperature -55 105 °C Isolation Voltage Input to Output 1000

800B Data Sheet

5/21/2019 VPXtra800B DS 03 .docx Page 1 of 16

FEATURES

3U VPX, 1.0” Single Slot Pitch

Three-Phase AC or 270VDC Input

Main DC Output: +28V/35A

Auxiliary DC Output: +3.3V/0.4A

Low Noise & Ripple

Parallelable Main Output (+28V/30A)

Input-Output Isolation

Excellent Load Regulation

Power Factor of 0.9 Typical

Efficiency of 90% Typical

High Power Density

Conduction Cooled at Card Edge

Overcurrent, Overvoltage, Overtemperature Protection

Conformal Coating on PCB ENABLE*, INHIBIT* Controls per VITA 62.0 Output Voltage FAIL* Signal LED Indicator for DC Status 50ms Hold-Up for 700W Using VPXtra HU700HV

Meets MIL-STD-704F Input Transient Protection Requirements

Designed to Meet MIL-STD-461G CE102, CS101, CS114, CS115, CS116, RS101

OVERVIEW

The Behlman VPXtra800B series COTS DC power supply is a rugged, highly reliable, conduction

cooled, switch mode unit built for high-end industrial and military applications. The VPXtra800B is a VPX

3U power supply that delivers up to 840 Watts of 28VDC power at up to 85°C cooling rail temperatures.

The +28V output can be paralleled for higher power and redundancy. The VPXtra800B can accept either

115VAC (L-N), 3-phase or 270VDC input IAW MIL-STD-704F, supplying a high power 28VDC output.

When used in conjunction with Behlman VPXtra HU700HV, a minimum hold-up time of 50msec for 700W

of output power can be achieved.

The VPXtra800B power supply has no minimum load requirement and has overvoltage and short

circuit protection as well as overcurrent and thermal protection. The power supply is designed to support

the rigors of mission critical airborne, shipboard, vehicle and mobile applications.

Designed and manufactured with Xtra-Cooling technology, Xtra-Reliable design and Xtra-Rugged construction makes the Behlman VPXtra800B your best choice.

ABSOLUTE MAXIMUM RATINGS

(Stresses above those listed below may cause permanent damage to the unit)

Parameter Notes Min Max Units

Input Voltage (Continuous Operation)

Three Phase AC, Line to Neutral (L-N) 100 125 V rms

DC 250 280 V DC

Input Frequency AC Input Only 360 800 Hz

Maximum Continuous Output Power

Card Edge @ 85°C 840 W

Card Edge @ 71°C 980 W

Operating Temperature Measured at Card Edge -40 85 °C

Storage Temperature -55 105 °C

Isolation Voltage Input to Output 1000 V

Isolation Voltage Input to Case 1000 V

Isolation Voltage Output to Case 500 V

Isolation Voltage 28VDC to +3.3V AUX 500 V

P/N 94095-10

800B Data Sheet


PERFORMANCE CHARACTERISTICS

Input Characteristics - AC (Three Phase)

Parameter Notes Min Typical Max Units

Operating Input Voltage Three Phase AC, Line to Neutral 100 115 125 V rms

Turn-On Threshold Three Phase AC, Line to Neutral 75 V rms

Turn-Off Threshold Three Phase AC, Line to Neutral 72 V rms

Input Standby Current Enable De-asserted (Input Off), Inhibit

Asserted (Output Off) 42 mA rms

Input Standby Current Enable Asserted (Input On), Inhibit

Asserted (Output Off) 43 mA rms

Input No Load Current Enable Asserted (Input On), Inhibit

De-asserted (Output On) 64 mA rms

Input Full Load Current

85°C Card Edge, Po = 840W, per Phase

3.00 A rms

71°C Card Edge, Po = 980W, per Phase

3.47 A rms

Power Factor Po = 840W [ref. Figure 12] 0.93

Inrush Current Vin =125Vrms L-N [ref. Figure 1] 8 14 A pk

Input Characteristics - DC


Operating Input Voltage DC, Applied to Any Two Phase Inputs 250 270 280 V DC

Turn-On Threshold DC, Applied to Any Two Phase Inputs 158 V DC

Turn-Off Threshold DC, Applied to Any Two Phase Inputs 119 V DC

Input Standby Current Enable De-asserted (Input Off), Inhibit

Asserted (Output Off) 40 mA DC

Input Standby Current Enable Asserted (Input On), Inhibit

Asserted (Output Off) 40 mA DC

Input No Load Current Enable Asserted (Input On) and Inhibit De-asserted (Output On)

60 mA DC

Input Full Load Current 85°C Card Edge, Po = 840W 3.52 A DC

71°C Card Edge, Po = 980W 4.06 A DC

Inrush Current Vin = 280V DC, [ref. Figure 2] 8 14 A DC

Peak Inrush Current Waveform at Turn-On

Figure 1: AC Input Figure 2: DC Input

800B Data Sheet


Output Characteristics, +28V Output


Voltage Set Point No Output Load 24.00 28.00 33.00 V

Line Regulation 100-125VAC (L-N) or 250-280VDC

Input, 100% Output Load 0.05 0.25 %

Load Regulation 10 - 100% Load 3.4 4 %

0 - 10% Load 6.25 7 %

Ripple/Noise (pk-pk) [ref. Note 2 and Figure 3] 150 1000 mV p-p

Ripple/Noise (rms) [ref. Note 2] 10 mV rms

Ext. Load Capacitance 0 2,000 uF

Load Current Range 71°C Card Edge, 980W Output 0 35 A

85°C Card Edge, 840W Output 0 30 A

Overvoltage Protection

From 25-100% Output Load 35.0 V

From 0-25% Output Load 36.4 V

Overcurrent Protection 71°C Card Edge (see Temp Select) 60 A

85°C Card Edge (Factory Default) 50 A

Transient Response [ref. Figure 5]

Output Characteristics, +3.3V Aux


Voltage Set Point No Output Load 3.25 3.3 3.35 V

Line Regulation 100-125VAC (L-N) or 250-280VDC

Input, 100% Output Load 0.1 0.3 %

Load Regulation 0 - 100% Load 2.1 3.0 %

Ripple/Noise (pk-pk) [ref. Note 2 and Figure 4] 15 50 mV p-p

Ripple/Noise (rms) [ref. Note 2] 3.5 mV rms

Load Current Range 0 0.4 A

Overcurrent Protection 0.45 0.5 0.6 A

Transient Response [ref. Figure 6]

General Characteristics Parameter Notes Min Typical Max Units

Efficiency (Po > 500W) AC Input [ref. Figure 10-A] 88 90

% DC Input [ref. Figure 10-B] 85 87

Turn-On Delay, +3.3V Aux Output

From application of input power (ENABLE* is asserted) [ref. Figure 7]

400 msec

Turn-On Delay, +28V output

From INHIBIT* de-assertion. [ref. Figure 8]

350 msec

Hold-Up Time 700W with VPXtra® HU700HV,

iaw MIL-STD-704F [ref. Figures 14-A, 14-B]

50 msec

Insulation Resistance Input to Case 10 MΩ

Ground Bond 30 ADC, 60 seconds 0.025 0.083 Ω

Humidity VITA 47.2 (non-condensing) 0 95 % RH

Vibration VITA 47.2, Class V3

Shock VITA 47.2, Class OS2

Altitude VITA 47.2 0 60,000 Ft

ESD VITA 47.2 (150pF + 330Ω) 15 kV

800B Data Sheet


Indicators

Indicator Description

DC Status, Bi-Color LED (Red and Green)

Red LED indicates outputs off or out of range; Green LED indicates outputs on.

Note 1: All performance parameters assume rail temperatures of 85°C unless otherwise specified. Note 2: Ripple and noise measured at output connector, across parallel connection of 10uF tantalum and 0.1uF ceramic capacitors,

20MHz Bandwidth.

Output Ripple and Noise Waveforms

Figure 3: 28V / 40A Output Ripple Figure 4: +3.3V Aux / 0.4A Output Ripple

Output Transient Response Waveforms

Figure 5: +28V Output, 25%-75% & 75-25% load change

Figure 6: +3.3V Aux Output, 25%-75% & 75%-25% load change

800B Data Sheet


Controls and Signals

Name Function Description

ENABLE* (Input) Input Power Control [ref. VITA

62.0]

Active low, referenced to SIG RTN; when asserted, internal input power bus is

enabled

INHIBIT* (Input) Output Power Control (+28V

Output) [ref. VITA 62.0] Active low, referenced to SIG RTN;

when asserted, +28V output is disabled.

FAIL* (Output) Reports out of tolerance output

voltages [ref. VITA 62.0]

Open drain output (3.3V, 20mA), external pull up required; logic low indicates output

voltage(s) out of tolerance.

Temp Select (Input) Select overcurrent limit based on maximum rail temperature

Connect to SIG RTN for 60A max (71°C rail temperature only); no connection for 50A max (up to 85°C rail temperature)

Output Voltage Start-Up Sequences

Figure 7: Turn-on Sequence from Application of Input Power

(ENABLE* asserted, INHIBIT* de-asserted)

Figure 8: Turn-on Sequence from INHIBIT* De-assertion (ENABLE* asserted)

Figure 9: Turn-on Sequence from ENABLE Assertion (INHIBIT* de-asserted)

800B Data Sheet


Figure 10-A: Efficiency vs. Output Power – AC Input

Figure 10-B: Efficiency vs. Output Power – DC Input

70%

75%

80%

85%

90%

95%

100%

80 230 380 530 680 830 980

100VAC 115VAC 125VAC

Pout (W)

70%

75%

80%

85%

90%

95%

100%

80 230 380 530 680 830 980

Pout (W)

250Vin 270Vin 280Vin

800B Data Sheet


Figure 11-A: Power Dissipation vs. Output Power – AC Input

Figure 11-B: Power Dissipation vs. Output Power – DC Input

0

20

40

60

80

100

120

140

160

80 230 380 530 680 830 980


Pout (W)

Pd

iss

(W)

0

20

40

60

80

100

120

140

160

80 280 480 680 880 1080

Pd

iss

(W)

Pout (W)

250Vin 270Vin 280Vin

800B Data Sheet


Figure 12: Power Factor vs. Output Power (AC Input Only)

EMI Conducted Emissions (CE102)

Figure 13-A: CE102 Low Frequency Band Scan Figure 13-B: CE102 High Frequency Band Scan

Results obtained with external EMI filter, Behlman p/n 13530, installed at input.

0.0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1.0

80 230 380 530 680 830 980


Pout (W)

800B Data Sheet


Figure 14-A: Hold-up Time for VPXtra®800B with VPXtra® HU700HV- AC Input

Figure 14-B: Hold-up Time for VPXtra®800B with VPXtra® HU700HV- DC Input

30

50

70

90

110

130

150

170

400 450 500 550 600 650 700 750 800

100VAC 108VAC 115VAC 125VAC

Output Power (W)

Ho

ld-u

p T

ime

(mse

c)

30

50

70

90

110

130

150

170

400 450 500 550 600 650 700 750 800

250VDC 270VDC 280VDC

Output Power (W)

Ho

ld-u

p T

ime

(mse

c)

800B Data Sheet


APPLICATION INFORMATION

ENABLE* and INHIBIT* Operation Guide: Behlman VPXtra®800B supports both ENABLE* and INHIBIT* functions in accordance with VITA 62.0. These signals control the state of the two power supply outputs. Both are active low signals referenced to SIGNAL_RETURN with internal pull-ups to internal 3.3V, and each follows the rules and recommendations of VITA 62.0, PARs 4.6.3.8 and 4.6.3.9. The table below provides the operational matrix for these signals. Note that an open circuit is interpreted as “Not Asserted” (high) state, while an “Asserted” (low) state may be applied via direct connection or similar (wire jumper, mechanical switch, transistor, etc.) to SIGNAL_RETURN. All connections must comply with the applicable logic levels of VITA 62.0. Behlman strongly discourages deliberate insertion of any impedance in series with these signals; if required, please contact the Behlman factory for guidance.

Input Power ENABLE* INHIBIT* +28V Output +3.3V Aux Output

Not Present X X OFF OFF

Present Not asserted (high) X OFF OFF

Present Asserted (low) Asserted (low) OFF ON

Present Asserted (low) Not Asserted (high) ON ON

The ENABLE* signal functions as “Input Enable”: when not asserted (e.g., unconnected) both outputs of the power supply are disabled. When ENABLE* is asserted (connected to SIGNAL_RETURN) the +3.3V Aux will turn on after a short delay, with the main output following depending upon the state on the INHIBIT* signal. The INHIBIT* signal functions as “Output Inhibit”: if asserted (connected to SIGNAL_RETURN), the main output is disabled; when de-asserted (e.g., unconnected) the main output is enabled. Note that the +3.3V Aux is not affected by the state of INHIBIT* and will remain on as long as ENABLE* is asserted. If INHIBIT* is not asserted (unconnected) when ENABLE* is asserted low, all outputs will turn on in their associated timing order [ref. Figures 7-9]. NOTE: When using employing the Behlman VPXtra®800B front-end card in conjunction with other Behlman VPXtra® series back-end (final output) power supplies, do not connect the ENABLE* and/or INHIBIT* signals of the front-end and back-end cards together. If it is necessary to employ both signals on both front-end and back end cards, use separate switches or signal lines for each or divide the ENABLE* and INHIBIT* functions, i.e. use ENABLE* to control the output of the VPXtra®800B and INHIBIT* to control the VPXtra® back-end cards [ref. Figure 15].

Operating Temp Select Guide VPXtra®800B is designed to operate at different maximum continuous power levels based on expected maximum cooling rail temperatures, up to 980W for rail temperatures up to 71°C and up to 840W for rail temperatures up to 85°C. In order to provide appropriate overload protection, VPXtra®800B offers two overcurrent levels selected using the OPERATING TEMP SELECT (pin A3) signal.

Leaving OPERATING TEMP SELECT open (unconnected) presumes operation at cooling rail temperatures above 71°C up to 85°C, and configures the overcurrent for continuous output power of up to 840W. In this mode, the rated output current of VPXtra®800B is no more than 30A with a current limit set for approximately 40A.

800B Data Sheet


Connecting OPERATING TEMP SELECT to SIGNAL_RETURN (pin D1) presumes operation at cooling rail temperatures up to 71°C, and configures the overcurrent for continuous output power of up to 980W. In this mode, the rated output current of VPXtra®800B increases to 35A with a current limit of approximately 58A.

CAUTION

The state of the OPERATING TEMP SELECT signal is sampled at power up and the corresponding overcurrent latched at the associated level until power down occurs. There is no automatic readjustment of the overcurrent level correlated to operating rail temperature. Operation beyond specified maximum rated output power for corresponding cooling rail temperatures may damage the power supply. It is the user’s responsibility to select the appropriate settings based on environmental (temperature) considerations. Behlman recommends that OPERATING TEMP SELECT be left open whenever the load power on the VPXtra®800B output is expected to be 840W or less to afford maximum protection in the event of an overload/short circuit condition.

Parallel Output Operation

The main 28VDC output of VPXtra®800B provides passive output load sharing (aka “droop” method), in which output voltage is deliberately decreased with increasing load current, resulting in balanced loading between paralleled outputs. Passive sharing occurs automatically when two or more power supply main outputs are connected in parallel, thus eliminating the discrete sharing signal connection between power supplies required by active load sharing. Typical load balancing is maintained within a ±5% range.

The 3.3V Aux output does not employ load sharing; contact the Behlman factory for details on parallel operation.

VPXtra®800B and VPXtra® HU700HV Application Guide VPXtra®800B front-end power supply module, when operated in conjunction with VPXtra® HU700HV energy storage module, is specifically designed to meet the input transient requirements specified by MIL-STD-704F. Interconnection of these modules is achieved by wiring pins LP9 and LP11 (HOLD-UP+ and HOLD-UP-, respectively) of VPXtra®800B to pins P1 and P2 (+270V and +270V RTN, respectively) of VPXtra® HU700HV. Doing so will allow a system utilizing both VPXtra®800B and VPXtra® HU700HV to meet the hold-up requirement imposed by MIL-STD-704F for loads less than or equal to 700W as tested in accordance with MIL-HDBK-704-3 [ref. Figures 14-A, 14-B]. Figure 15 below shows a diagram for connecting VPXtra®800B and VPXtra® HU700HV in a system utilizing VPXtra®700M DC/DC back-end power supply module. In this configuration, 3-phase AC prime power is converted to a 28VDC intermediate power bus which is then used to power VPXtra®700M, thus creating a MIL-STD-704F complaint 3U power subsystem offering VITA standard final output voltages. Note the use of ENABLE* on VPXtra®800B and INHIBIT* on VPXtra®700M as recommended in the ENABLE* and INHIBIT* Operation Guide earlier in this document.

CAUTION

The HOLD-UP pins (LP9 and LP11) on VPXtra®800B are intended only for connection to VPXtra® HU700HV and should not be used for any other purpose. Note that these pins are at high potential and are referenced to the input neutral: proper routing and spacing requirements must be observed when designing the interface backplane.

800B Data Sheet


Figure 15: Typical Interconnection Diagram

800B Data Sheet


MECHANICAL CHARACTERISTICS – VPXtra®800B

Connector Pin Assignments

Figure 16: Connector [P0] Pin Assignments and Signal Descriptions - VPXtra®800B

800B Data Sheet


Outline Dimensions

Figure 17: Mechanical Dimensions - VPXtra®800B

Net Weight: 1.9 lbs. maximum

Refer to Product Outline Drawing (OC94095-10) for additional details

800B Data Sheet


MECHANICAL CHARACTERISTICS – VPXtra® HU700HV

Connector Pin Assignments

Figure 18: Connector [P0] Pin Assignments and Signal Descriptions - VPXtra® HU700HV

800B Data Sheet


Outline Dimensions

Figure 19: Mechanical Dimensions - VPXtra® HU700HV

Net Weight: 1.45 lbs. maximum

Refer to Product Outline Drawing (24178) for additional details

Documents

800B Data Sheet P/N 94095-10 · Card Edge @ 71°C 980 W Operating Temperature Measured at Card Edge -40 85 °C Storage Temperature -55 105 °C Isolation Voltage Input to Output 1000