GE

Data Sheet

QBDW025A0B Barracuda Series; DC-DC Converter Power Modules

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

May 9, 2013

©2012 General Electric Company. All rights reserved.

Page 5

Digital Interface Specifications

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

Feature Descriptions for additional information.

Parameter

Conditions

Symbol

Min

Typ

Max

Unit

PMBus Signal Interface Characteristics

Input High Voltage (CLK, DATA)

VIH

2.1

3.6

V

Input Low Voltage (CLK, DATA)

VIL

0.8

V

Input high level current (CLK, DATA)

-10

10

μA

Input low level current (CLK, DATA)

-10

10

μA

Output Low Voltage (CLK, DATA, SMBALERT#)

VOL

0.4

V

Output high level open drain leakage current

(DATA, SMBALERT#)

0

10

μA

Pin capacitance

0.7

pF

PMBus Operating frequency range

(* 5-10 kHz to accommodate hosts not

supporting clock stretching)

Slave Mode

FPMB

5*

400

kHz

Measurement System Characteristics

Output current reading range

1.6500

63.9375

A

Output current reading blanking

0

1.5875

A

Output current reading resolution

62.5

mA

Output current reading accuracy

16.5A< Iout <25.0A

-5.0

-1.4

3.0

%

Output current reading accuracy (absolute

difference between actual and reported values)

1.65A< Iout <16.5A

-1.7

2.5

A

0

15.9997

V

0.244

mV

-2.0

0.6

2.0

%

0

127.875

V

125

mV

-4.0

0.8

4.0

%

Temperature reading resolution

0.25

Temperature reading accuracy

-5.0

5.0

%