Product # BQ57120EZB38

Phone 1-888-567-9596

www.synqor.com

Doc.# 005-0006442 Rev. D

02/17/16

Page 3

Technical Specification

Input:

40-65V

Output:

12.0V

Current:

38A

Package:

Eighth-brick

Electrical Characteristics

BQ57120EZB38 Electrical Characteristics

Ta = 25 °C, airflow rate = 300 LFM, Vin = 48V dc unless otherwise noted; full operating temperature range is -40 °C to +100 °C base plate temperature

with appropriate power derating. Specifications subject to change without notice.

Parameter

Min.

Typ.

Max.

Units Notes & Conditions

ABSOLUTE MAXIMUM RATINGS

Input Voltage

Non-Operating

-1

75

V

Continuous

Operating

40

65

V

Continuous

Isolation Voltage

Input to Output

2000

V

Operating Temperature

-40

100

°C

Storage Temperature

-45

125

°C

Voltage at ON/OFF input pin

-2

18

V

INPUT CHARACTERISTICS

Operating Input Voltage Range

40

48

65

V

Input Under-Voltage Lockout

Turn-On Voltage Threshold

37.0

V

Turn-Off Voltage Threshold

34.5

V

Lockout Voltage Hysteresis

2.5

V

Input Over-Voltage Shutdown

V

Turn-On Voltage Threshold

66.5

67.5

V

Turn-Off Voltage Threshold

69

69.9

V

Maximum Input Current

10.1

A

Vin = 40 V

No-Load Input Current

130

mA

Disabled Input Current

8.5

12.0

mA

Input Reflected-Ripple Current

10

20

mA

RMS through 10µH inductor

Input Terminal-Ripple Current

375

mA

RMS, full load

Recommended Input Fuse (see Note 1)

20

A

Fast blow external fuse recommended

Recommended External Input Capacitance

47

µF

Typical ESR 0.1-0.2 Ω

Input Filter Component Values (C)

9.4

µF

Internal value; see Note 4

OUTPUT CHARACTERISTICS

Output Voltage Set Point

11.95

V

Vin = 48 V; Io = 0 A

Output Voltage Regulation

Over Line

52.1\6.25

%\V

Over Load

4.2\500

%\mV

Over Temperature

1.7\200

%\mV

Total Output Voltage Range

9.300

16.250

V

Over sample, line, load, temperature & life

Output Voltage Ripple and Noise

20 MHz bandwidth; see Note 2

Peak-to-Peak

90

150

mV

Full load

RMS

25

mV

Full load

Operating Output Current Range

0

38

A

Subject to thermal derating

Output DC Current-Limit Inception

52

A

Output Voltage 10% Low; see Note 4

Output DC Current-Limit Shutdown Voltage

8

V

Back-Drive Current Limit while Disabled

10

mA

Negative current drawn from output

Maximum Output Capacitance

5,000

µF

12.0 Vout at 20 A Resistive Load

EFFICIENCY

100% Load

96.7

%

50% Load

96.7

%