Product # BQ55090QZB84

Phone 1-888-567-9596

www.synqor.com

Doc.# 005-0006286 Rev. C

02/10/16

Page 4

Technical Specification

Input:

35-55V

Output:

9.6V

Current:

84 A

Package:

Quarter-brick

BQ55090QZB84 Electrical Characteristics (continued)

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

DYNAMIC CHARACTERISTICS

Output Voltage during Load Current Transient

Step Change in Output Current (0.1 A/µs)

200

mV

50% to 75% to 50% Iout max

Settling Time

100

µs

To within 1% Vout nom

Turn-On Transient

Turn-On Time (with 5mF output capacitance)

5

10

ms

42 A Resistive Load, Vout=90% nom.

Fault Inhibit Time

800

ms

Figure E

Output Voltage Overshoot

2

%

5 mF load Capacitance; 42 A Resistive Load

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

Base plate temperature

100

°C

FEATURE CHARACTERISTICS

Switching Frequency

120

140

160

kHz

ON/OFF Control (Option N)

On-State Voltage

-1

0.8

V

Off-State Voltage

2.4

18

V

ON/OFF Control

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) SR-332, Issue 2

5.4

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

3.6

Field Demonstrated MTBF

Note 1: Safety product certification tests were carried out using 30A 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.