Product # BQ57120QZB67

Phone 1-888-567-9596

www.synqor.com

Doc.# 005-0006523 Rev. B

05/12/15

Page 4

Technical Specification

Input:

40-65 V

Output:

12 V

Current:

67A

Package:

Quarter-brick

BQ57120QZB67 Electrical Characteristics (continued)

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

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

Parameter

Min.

Typ.

Max.

Units Notes & Conditions

DYNAMIC CHARACTERISTICS

Output Voltage during Load Current Transient

Step Change in Output Current (0.1 A/µs)

150

mV

50% to 75% to 50% Iout max

Settling Time

100

µs

To within 1% Vout nom

Turn-On Transient

Turn-On Time (with 5 mF output capacitance)

5

10

ms

Half load, Vout=90% nom.

Start-Up Inhibit Time

800

ms

-40 °C to +125 °C; Figure E

Output Voltage Overshoot

0

%

5 mF load capacitance

ISOLATION CHARACTERISTICS

Isolation Voltage (dielectric strength)

2000

V

See Absolute Maximum Ratings

Isolation Resistance

30

MΩ

Isolation Capacitance (input to output)

1000

pF

See Note 3

Semiconductor Junction Temperature

125

°C

Package rated to 150 °C

Board Temperature

125

°C

UL rated max operating temp 130 °C

Transformer Core Temperature

130

°C

Maximum Baseplate Temperature, Tb

100

°C

FEATURE CHARACTERISTICS

Switching Frequency

170

200

230

kHz

ON/OFF Control (Option N)

On-State Voltage

-1

0.8

V

Off-State Voltage

2.4

18

V

ON/OFF Control (Either Option)

Application notes Figures A & B

Pull-Up Voltage

3.3

V

Pull-Up Resistance

100

kΩ

Over-Temperature Shutdown OTP Trip Point

140

150

°C

Average PCB Temperature

Over-Temperature Shutdown Restart Hysteresis

10

°C

RELIABILITY CHARACTERISTICS

Calculated MTBF (Telcordia) TR-NWT-000332

5.4

Calculated MTBF (MIL-217) MIL-HDBK-217F

3.6

Field Demonstrated MTBF

Note 1: UL’s product certification tests were carried out using 30 A fast blow fuse. Fuse interruption characteristics have to be taken into

account while designing input traces. User should ensure that Input trace is capable of withstanding fault currents

Note 2: For applications requiring reduced output voltage ripple and noise, consult SynQor applications support (e-mail: support@synqor.com)

Note 3: Isolation capacitance can be added external to the module.