Product # BQ55090QPA40

Phone 1-888-567-9596

www.synqor.com

Doc.# 005-2BQ559K Rev. A

3/6/07

Page 1

T

echnical

S

pecification

BQ55090QP

A40

TThhee BBuussQ

Q5

55

50

09

90

0Q

QPPA

A4

40

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DC

C/

/D

DC

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wnn

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m 4

48

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9..6

6VV iinntteerrm

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Qoorr ccoonn--

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12

2))..

BQ55090QPA40 Module

Bus

Bus

Conver

ter

35-55V

35-55V

9.6V

9.6V

43A

43A

2000Vdc

2000Vdc

Quar

ter-brick

Input

Input

Output

Output

Current

Current

Isolation

Isolation

DC Bus Conver

ter

• Ultra-high efficiency, 96.5% at 40A

• Delivers up to 43 amps of output current with minimal

derating - no heatsink required

• Input voltage range: 35V – 55V provides 6.5-11V bus

for distributed power architectures

• Fixed frequency switching provides predictable EMI per-

formance

Operational Features

Operational Features

• On/Off control referenced to input side (positive and

negative logic options available)

• Inherent current share (by droop method) for high cur-

rent and parallel applications.

Contr

ol Features

• Industry standard quarter-brick bus converter pin-out

• Industry standard size: 1.45” x 2.3” (36.8x58.4mm)

• Total height only 0.467” (11.86mm), permits better air-

flow and smaller card pitch

• Total weight: 1.5 oz. (42 grams)

• Flanged pins designed to permit surface mount solder-

ing (avoid wave solder) using FPiP technique

Mechanical Features

Mechanical Features

• 2000V, 30 MW input-to-output isolation

• UL/cUL 60950-1 recognized (US & Canada), basic

insulation rating

• TUV certified to EN60950-1

• Meets 72/23/EEC and 93/68/EEC directives

• Meets UL94V-0 flammability requirements

Safety Features

Safety Features

• Input under-voltage lockout and over-voltage shutdown

protects against abnormal input voltages

• Output current limit and short circuit protection

• Thermal shutdown

Pr

otection Features