GE Industrial Solutions QBVS050A0B User Manual

Data Sheet

QBVS050A0B Barracuda* Series; DC-DC Converter Power Modules

52-60Vdc Input; 12.0Vdc, 50.0A, 600W Output

RoHS Compliant

Applications

 Distributed power architectures  Intermediate bus voltage applications  Servers and storage applications

Options

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

preferred)

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

preferred)

 Pin Trim

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 >96.5% at 12.0V

to 100% output

 Input voltage range: 52-60V  Delivers up to 50.0A  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 12.7 mm  (2.30 in x 1.45 in x 0.50 in)

 Base plate (-H=option code, must be ordered)  Constant switching frequency  Positive Remote On/Off logic  Output over current/voltage protection  Over temperature protection  Wide operating temperature range

-5°C to 85°C, continuous

-20°C to 90°C, short term, ≤ 96hrs/year

 UL

 CE mark to 2006/96/EC directive  750Vdc Functional Isolation  ISO** 9001 and ISO14001 certified manufacturing facilities

60950-1, 2nd Ed. Recognized, CSA† C22.2 No. 60950-1-

07 Certified, and VDE‡ (EN60950-1, 2nd Ed.) Licensed

output current

, 50% load

Description

The QBVS050A0B Barracuda series of dc-dc converters are a new generation of fully regulated DC/DC power modules designed to support 12.0Vdc 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 QBVS050A0B series operate from an input voltage range of 52 to 60Vdc and provide up to 50.0A output current at output voltages of 12.0V compliant quarter brick. The converter incorporates digital control, synchronous rectification technology, a fully regulated control topology, and innovative packaging techniques to achieve efficiency exceeding 97% at 12.0V 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 Can adian 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. ** ISO is a registered trademark of the International Organization of Standards.

in an industry standard, DOSA

Data Sheet

QBVS050A0B Barracuda Series; DC-DC Converter Power

Modules

52-60Vdc Input; 12.0Vdc, 50.0A, 600W 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

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

 

-0.3 60 Vdc

75 Vdc

-20 85 °C

-55 125 °C

750 Vdc

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 52 54 60 Vdc

Maximum Input Current (VIN=45V, IO=I

Input No Load Current

(VIN = V

Input Stand-by Current

(VIN = V

External Input Capacitance All 120 600 - μF

Inrush Transient All I2t - - 1 A2s

Input Reflected Ripple Current, peak-to-peak (5Hz to 20MHz, 12μH source impedance; V see Figure 9)

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= 52V to 60V, IO= I

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

)

O, max

, IO = 0, module enabled)

IN, nom

, module disabled)

IN, nom

= 48V, IO= I

Omax

All I

;

All - 40 - mA

All - - 800 mA

IN,max

IN,No load

IN,stand-by

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 25A 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.

- - 13 Adc

175 mA

20 mA

p-p

rms

Data Sheet

QBVS050A0B Barracuda Series; DC-DC Converter Power

Modules

52-60Vdc Input; 12.0Vdc, 50.0A, 600W Output

Electrical Specifications (continued)

Parameter Device Symbol Min Typ Max Unit

Output Voltage Set-point (V

, IO=25.0A, TA =25°C)

IN=VIN,nom

Output Voltage (Over all operating input voltage (52V to 60V), resistive load, and temperature conditions until end of life)

Output Regulation

Line (VIN= V

Load (IO=I

O, min

IN, min

to V

) All

IN, max

to I

) All

O, max

Temperature (TA = -20ºC to +85ºC) All

Output Ripple and Noise on nominal output

(VIN=V

IN, nom

and IO=I

O, min

to I

)

O, max

RMS (5Hz to 20MHz bandwidth) All

Peak-to-Peak (5Hz to 20MHz bandwidth) 750uF All

External Output Capacitance All C

Output Current All I

Output Current Limit Inception All I

Output Power All P Efficiency

IN=VIN, nom

, TA=25°C

O, max, VO

to 100% I

O, max

= V

All η 97.1 %

O,set

= V

O, max , VO

All η 96.5 %

O,set

V IO=100% I

IO=50% I

Switching Frequency (Primary FETs) f

Dynamic Load Response

dIO/dt=1A/10s; Vin=Vin,

; TA=25°C;

nom

(Tested with a 1.0μF ceramic,, and 750μF capacitor and across the load.)

Load Change from IO = 50% to 75% of I

O,max

: Peak Deviation Settling Time (V

Load Change from IO = 75% to 50% of I

<10% peak deviation)

O,max

: Peak Deviation Settling Time (V

<10% peak deviation)

All V

O, set

O, max

O,lim

11.95 12.00 12.05 V

11.70



0.2

150



12.30 V



% V

O, set

rms

pk-pk

4,500 μF

50 Adc

65 Adc

600 W

All

150 kHz

 __

350 700

 __

s

Isolation Specifications

Parameter Symbol Min Typ Max Unit

Isolation Capacitance C

Isolation Resistance R

iso



0.01

 



F

MΩ

General Specifications

Parameter Symbol Device Typ Unit

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

I, Case 3, (I

=80%I

, TA=40°C, Airflow = 200

O, max

LFM), 90% confidence

MTBF All 2,615,767 Hours

FIT All 382.3 109/Hours

Weight – with Base plate option 73.6 (2.60) g (oz.)

Data Sheet

QBVS050A0B Barracuda Series; DC-DC Converter Power

Modules

52-60Vdc Input; 12.0Vdc, 50.0A, 600W Output

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 =60V) 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 30 milli-seconds (Enable with on/off).

Output Overvoltage Protection All V

Overtemperature Protection

(See Feature Descriptions)

Input Undervoltage Lockout

Input Overvoltage Lockout

to V

IN, min

, Signal referenced to V

IN, max

terminal)

IN-

on/off

Logic Low Voltage All V

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

Logic High maximum allowable leakage current (V

= 2.4V)

on/off

All I

Maximum voltage allowed on On/Off pin All V

)

O, max

=Time until VO = 10% of V

delay

from either application

O,set

All

delay,

with Vin

on/off

Enable

delay, Enable

All

with on/off

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

rise

>5000uF, IO must be < 50% I

O, max

during T

Turn-on Threshold

Turn-off Threshold

Hysteresis

Turn-off Threshold

Turn-on Threshold

, For C

O,set

rise

All T

rise

13.0

O,limit

ref



 

-0.3

2.4

 



200 μA

0.8 Vdc

14.5 Vdc

130 μA

14.5 Vdc

30 ms

 

5 ms



130



16.0 Vdc



50 51 52 Vdc

47 48 49 Vdc

2 3 Vdc

60 61



°C

Vdc

Data Sheet

QBVS050A0B Barracuda Series; DC-DC Converter Power

Modules

52-60Vdc Input; 12.0Vdc, 50.0A, 600W Output

Characteristic Curves, 12.0Vdc Output

The following figures provide typical characteristics for the QBVS050A0B (12.0V, 50A) at 25ºC. The figures are identical for either positive or negative Remote On/Off logic.

(A)

INPUT CURRENT, I

INPUT VOLTAGE, VO (V)

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

EFFCIENCY, η (%)

OUTPUT CURRENT, I

(V) (200mV/div)

(A)

(V) (50mV/div)

OUTPUT VOLTAGE,

TIME, t (2s/div)

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

o,max

CO=750µF.

LTA

(V) (20V/div)

E INPUT V

LTA

(V) (5V/div) V

UTPUT V

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

Figure 5. Typical Start-Up Using Vin with Remote On/Off

= I

enabled, negative logic version shown, I

o,max

(A) (10A/div) V

OUTPUT CURRENT OUTPUT VOLTAGE

TIME, t (500 μs/div)

Figure 4. Typical Transient Response to 0.1A/µs Step Change in Load from 50% to 75% to 50% of Full Load, CO=750µF and

Input.

48 V

(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 Io = I

o,max

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GE Industrial Solutions QBVS050A0B User Manual

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