GE Industrial Solutions QBVW025A0B User Manual

Data Sheet

QBVW025A0B Barracuda* Series; DC-DC Converter Power Modules

36-75Vdc Input; 12.0Vdc, 25.0A, 300W Output

RoHS Compliant

Applications

 Distributed power architectures  Intermediate bus voltage applications  Servers and storage applications  Networking equipment including Power over Ethernet

(PoE)

 Fan assemblies and other systems requiring a tightly

regulated output voltage

Options

 Negative Remote On/Off logic (1=option code, factory

preferred)

 Auto-restart after fault shutdown (4=option code,

factory preferred)

 Remote Sense and Output Voltage Trim (9=option

code)

 Base plate option (-H=option code)  Passive Droop Load Sharing (-P=option code)

Features

 Compliant to RoHS II EU “Directive 2011/65/EU (-Z versions)  Compliant to REACH Directive (EC) No 1907/2006  High and flat efficiency profile – >95.5% at 12V

100% output

 Wide Input voltage range: 36-75V  Delivers up to 25A  Fully very tightly regulated output voltage  Low output ripple and noise  Industry standard, DOSA Compliant Quarter brick:

58.4 mm x 36.8 mm x 11.7 mm (2.30 in x 1.45 in x 0.46 in)

 Constant switching frequency  Positive Remote On/Off logic

 Output over current/voltage protection  Over temperature protection  Wide operating temperature range (-40°C to 85°C)

 ANSI/ UL

No.60950-1-07, Second Edition + A1:2011 (MOD) Certified IEC 60950-1:2005 (2nd edition) + A1:2009 and EN 60950-1:2006 + A11:2009 + A1:2010 + A12:2011, and VDE‡ 0805-1 Licensed

 CE mark to 2006/96/EC directive  Meets the voltage and current requirements for ETSI 300-

132-2 and complies with and licensed for Basic insulation rating per EN60950-1

 2250 Vdc Isolation tested in compliance with IEEE 802.3

standards

 ISO** 9001 and ISO14001 certified manufacturing facilities

60950-1-2011 Recognized, CAN/CSA† C22.2

output current

, 40% load to

PoE

Description

The QBVW025A0B Barracuda series of dc-dc converters are a new generation of fully regulated DC/DC power modules designed to support 12Vdc intermediate bus applications where multiple low voltages are subsequently generated using point of load (POL) converters, as well as other application requiring a tightly regulated output voltage. The QBVW025A0B series operate from an input voltage range of 36 to 75Vdc and provide up to 25A output current at output voltages of 12V DOSA compliant quarter brick. The converter incorporates digital control, synchronous rectification technology, a fully regulated control topology, and innovative packaging techniques to achieve efficiency exceeding 96% at 12V output. This leads to lower power dissipations such that for many applications a heat sink is not required. Standard features include on/off control, output overcurrent and over voltage protection, over temperature protection, input under and over voltage lockout.

The output is fully isolated from the input, allowing versatile polarity configurations and grounding connections. Built-in filtering for both input and output minimizes the need for external filtering.

* Trademark of General Electric Company # UL is a registered trademark of Underwriters Laboratories, Inc. † CSA is a registered trademark of Canadian Standards Association. ‡ VDE is a trademark of Verband Deutscher Elektrotechniker e.V.

§ This product is intended for integration into end-user equipment . All of the required procedures of end-use equipment should be followed. ¤ IEEE and 802 are registered trademarks of the Institute of Electrical and Electronics Engineers, Incorporated. ** ISO is a registered trademark of the International Organization of Standards.

in an industry standard,

Data Sheet

QBVW025A0B Barracuda™ Series; DC-DC Converter Power Modules

36-75Vdc Input; 12.0Vdc, 25.0A, 300W Output

Absolute Maximum Ratings

Stresses in excess of the absolute maximum ratings can cause permanent damage to the device. These are absolute stress ratings only, functional operation of the device is not implied at these or any other conditions in excess of those given in the operations sections of the Data Sheet. Exposure to absolute maximum ratings for extended periods can adversely affect device reliability.

Parameter Device Symbol Min Max Unit

Input Voltage*

Continuous V

Operating transient ≤ 100mS 100 Vdc

Non- operating continuous V

Operating Ambient Temperature All T

(See Thermal Considerations section)

Storage Temperature All T

I/O Isolation Voltage (100% factory Hi-Pot tested) All

* Input over voltage protection will shutdown the output voltage when the input voltage exceeds threshold level.

stg

 

Electrical Specifications

Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions.

Parameter Device Symbol Min Typ Max Unit

Operating Input Voltage VIN 36 48 75 Vdc

Maximum Input Current (VIN=0V to 75V, IO=I

Input No Load Current

(VIN = V

IN, nom

Input Stand-by Current

(VIN = V

IN, nom

External Input Capacitance All 100 - - μF

Inrush Transient All I2t - - 1 A2s

Input Terminal Ripple Current

(Measured at module input pin with maximum specified input capacitance and ൏ 500uH inductance between voltage source and input capacitance)

5Hz to 20MHz, VIN= 48V, IO= I

Input Reflected Ripple Current, peak-to-peak (5Hz to 20MHz, 12μH source impedance; V Figure 11)

)

O, max

, IO = 0, module enabled)

, module disabled)

Omax

= 48V, IO= I

Omax

; see

All I

All - 350 - mA

All - 40 - mA

IN,max

IN,No load

IN,stand-by

-0.3 75 Vdc

80 100 Vdc

-40 85 °C

-55 125 °C

2250 Vdc

- - 9 Adc

80 mA

22 mA

rms

p-p

Input Ripple Rejection (120Hz) All - 25 - dB

CAUTION: This power module is not internally fused. An input line fuse must always be used.

This power module can be used in a wide variety of applications, ranging from simple standalone operation to an integrated part of sophisticated power architecture. To preserve maximum flexibility, internal fusing is not included, however, to achieve maximum safety and system protection, always use an input line fuse. The safety agencies require a fast-acting fuse with a maximum rating of 30 A in the ungrounded input lead of the power supply (see Safety Considerations section). Based on the information provided in this Data Sheet on inrush energy and maximum dc input current, the same type of fuse with a lower rating can be used. Refer to the fuse manufacturer’s Data Sheet for further information.

Data Sheet

QBVW025A0B Barracuda™ Series; DC-DC Converter Power Modules

36-75Vdc Input; 12.0Vdc, 25.0A, 300W Output

Electrical Specifications (continued)

Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions.

Parameter Device Symbol Min Typ Max Unit

Output Voltage Set-point (VIN=V

Output Voltage (Over all operating input voltage (40V to 75V), resistive load, and temperature conditions until end of life)

Output Voltage (VIN=36V, TA = 25ºC) All V

Output Regulation[V

Line (VIN= V

Load (IO=I

O, min

IN, min

to I

= 40V]

IN, min

to V

)

IN, max

to V

)

IN, max

)

O, max

)

O, max

), Intentional Droop

O, max

Temperature (TA = -40ºC to +85ºC) All

Output Ripple and Noise on nominal output

(VIN=V

IN, nom

and IO=I

O, min

to I

RMS (5Hz to 20MHz bandwidth) All

Peak-to-Peak (5Hz to 20MHz bandwidth) All

External Output Capacitance

>5000uF, IO must be < 50% I

For C

Output Current All I

Output Current Limit Inception All I

Efficiency (VIN=V

IN, nom

, TA=25°C)

IO=100% I

IO=40% I

O, max , VO

O, max

= V

to 100% I

All η 96.0 %

O,set

O, max , VO

Switching Frequency f

Dynamic Load Response

dIO/dt=1A/10s; Vin=Vin,

nom

(Tested with a 1.0μF ceramic, a 10μF tantalum, and 470μF capacitor and across the load.)

Load Change from IO = 50% to 75% of I Peak Deviation Settling Time (V

<10% peak deviation)

Load Change from IO = 75% to 50% of I Peak Deviation Settling Time (V

<10% peak deviation)

General Specifications

, IO=12.5A, TA =25°C) All V

IN,nom

All w/o -P V

-P Option V

All w/o 9

option

All w/ 9

option

All w/o P or

9 option

All w/ 9

tion

All w/ P

Option

)

O, max

during T

rise

All C

O, set

O, max

O, lim

11.97 12.00 12.03 V

11.76

11.68

11.15



 



 

0.2

0.5

0.2

1.2

0.40

200



12.24 V

12.32 V



% V



2 % V

 

10,000 μF

0 25 Adc



Vdc

O, set

rms

pk-pk

= V

All η 95.5 %

O,set

150 kHz

; TA=25°C;

O,max

All

 __

__ __

300 700

 __

s

Parameter Device Typ Unit

Calculated Reliability Based upon Telcordia SR-332 Issue 2: Method

I, Case 1, (I

=80%I

, TA=40°C, Airflow = 200 lfm), 90%

O, max

confidence

MTBF All 3,598,391 Hours

FIT All 277.9 109/Hours

Weight – Open Frame 47.4 (1.67) g (oz.)

Weight – with Base plate option 66.4 (2.34) g (oz.)

Data Sheet

QBVW025A0B Barracuda™ Series; DC-DC Converter Power Modules

36-75Vdc Input; 12.0Vdc, 25.0A, 300W Output

Isolation Specifications

Parameter Symbol Min Typ Max Unit

Isolation Capacitance C

Isolation Resistance R

iso



1000

 



Feature Specifications

Unless otherwise indicated, specifications apply over all operating input voltage, resistive load, and temperature conditions. See Feature Descriptions for additional information.

Parameter Device Symbol Min Typ Max Unit

Remote On/Off Signal Interface

(VIN=V Negative Logic: device code suffix “1”

Logic Low = module On, Logic High = module Off

Positive Logic: No device code suffix required Logic Low = module Off, Logic High = module On

Logic Low Specification

On/Off Thresholds:

Remote On/Off Current – Logic Low (Vin =100V) All I

Turn-On Delay and Rise Times (IO=I

T of Vin with Remote On/Off set to On (Enable with Vin); or operation of Remote On/Off from Off to On with Vin already applied for at least 150 milli-seconds (Enable with on/off). * Increased T

Load Sharing Current Balance (difference in output current across all modules with outputs in parallel, no load to full load)

Remote Sense Range

Output Voltage Adjustment range

Output Overvoltage Protection

Overtemperature Protection (See Feature Descriptions) Input Undervoltage Lockout

Input Overvoltage Lockout

to V

IN, min

, Signal referenced to V

IN, max

terminal)

IN-

Logic Low Voltage All V

Logic High Voltage – (Typ = Open Collector) All V

Logic High maximum allowable leakage current

= 2.0V)

on/off

All I

Maximum voltage allowed on On/Off pin All V

)

O, max

All w/o P

=Time until VO = 10% of V

delay

from either application

O,set

option

All w/o P

option

All w/ P

option

due to startup for parallel modules.

delay

All w/ P

option

=Time for VO to rise from 10% to 90% of V

rise

>5000uF, IO must be < 50% I * Increased T

when pre-bias Vo exists at startup for

rise

O, max

during T

parallel modules.

, For C

O,set

rise

All w/o P

option

All w/ P

option

P Option

All w/ 9

option

All w/ 9

option

All w/o 9

option

All w/ 9

option

All T

Turn-on Threshold (Default)

Turn-off Threshold (Default)

Turn-on Threshold (Default)

on/off

Enable

delay,

with Vin

delay, Enable

with on/off

Enable

delay,

with Vin

delay, Enable

with on/off

rise

diff

Sense

8.1

O, set

14.5

O,limit

ref

280

-0.3

2.0

  

 

O,set

+2.5V



140

310 μA

0.8 Vdc

14.5 Vdc

10 μA

14.5 Vdc

150 ms

10 ms

180* ms

40* ms

15 ms

300* ms

3 A

0.5 Vdc

13.2 Vdc

17.0 Vdc

+5.0V Vdc

O,set



33 35 36 Vdc

31 33 34 Vdc



76 79

 

MΩ

°C

Vdc

Data Sheet

QBVW025A0B Barracuda™ Series; DC-DC Converter Power Modules

36-75Vdc Input; 12.0Vdc, 25.0A, 300W Output

Characteristic Curves, 12Vdc Output

The following figures provide typical characteristics for the QBVW025A0B (12V, 25A) at 25ºC. The figures are identical for either positive or negative Remote On/Off logic.

(A)

INPUT CURRENT, I

EFFCIENCY, η (%)

INPUT VOLTAGE, VO (V)

OUTPUT CURRENT, I

(A)

Figure 1. Typical Input Characteristic. Figure 2. Typical Converter Efficiency Vs. Output Current.

(V) (200mV/div)

(V) (50mV/div)

OUTPUT VOLTAGE,

(A) (5A/div) V

TIME, t (2s/div)

Figure 3. Typical Output Ripple and Noise, Io = I

o,max

OUTPUT CURRENT OUTPUT VOLTAGE

Figure 4. Typical Transient Response to 0.1A/µs Step Change

TIME, t (500 μs/div)

in Load from 50% to 75% to 50% of Full Load, Co=470µF and 48 Vdc Input.

(V) (20V/div)

(V) (5V/div) V

OUTPUT VOLTAGE INPUT VOLTAGE

TIME, t (20 ms/div) TIME, t (5 ms/div)

Figure 5. Typical Start-Up Using Vin with Remote On/Off enabled, negative logic version shown.

(V)(2V/div)

ON/OFF

(V) (5V/div) V

OUTPUT VOLTAGE On/Off VOLTAGE

Figure 6. Typical Start-Up Using Remote On/Off with Vin applied, negative logic version shown.

Data Sheet

QBVW025A0B Barracuda™ Series; DC-DC Converter Power Modules

36-75Vdc Input; 12.0Vdc, 25.0A, 300W Output

Characteristic Curves, 12Vdc Output (continued)

(V)

OUTPUT VOLTAGE, V

INPUT VOLTAGE, Vin (V) OUTPUT CURRENT, IO (A)

Figure 7. Typical Output Voltage Regulation vs. Input Voltage.

(V)

OUTPUT VOLTAGE, V

OUTPUT CURRENT, IO (A)

Figure 9. Typical Output Voltage regulation vs. Input Voltage for the –P Option.

OUTPUT VOLTAGE, V

Figure 8. Typical Output Voltage Regulation vs. Output Current .

Figure 10. Typical Output Voltage Regulation vs. Output Current for the –P Option.

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