BQ SERIES
BQ SERIES
INDUSTRY STANDARD QUARTER BRICK
FEATURES
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High Efficiency - 86% @ 3.3V and 5V (typical)
Overcurrent Protection
Remote Sense
Remote On/Off (primary referenced, negative or
positive logic)
Output Voltage Adjustment (trim)
Water Washable
Heatsink Mountable
Fixed Frequency
UL/CUL 1950 and EN60950
CE mark, LVD, 48Vin only *
(see page 2)
UP TO 100 WATTS
THE BQ SERIES FROM WALL INDUSTRIES
The BQ Series of DC/DC Converters is a single output,
highly efficient, high reliability and low cost design, to
meet the needs of today's power requirements. The BQ
Series perform exceptionally well in Telecom, Networking
and Industrial Applications.
SPECIFICATIONS: BQ SERIES
INPUT SPECIFICATIONS
Input Voltage Range..................................................36-75VDC
Nominal Input.................................................................48VDC
Remote On/Off...........................................ref. -Vin (see note 1)
GENERAL SPECIFICATIONS
Efficiency...........................Model Specific, Consult Factory
Isolation Voltage, input to output...................1500VDC min.
Isolation Resistance.........................................100MOhms
Minimum Load..................Varies by model, consult factory
Output
OUTPUT SPECIFICATIONS
Current............................................................See table
Tolerance...............................................................±1%
Line Regulation(LL-HL).....................................................±0.1%
Load Regulation...............................................................±0.1%
Short Circuit Protection Inception.......................................125%
Overvoltage Protection......................................................120%
Ripple/Noise....................................1% Vout Nom., 20MHz BW
External Trim Voltage Range..............................................±10%
Short Circuit ..............................Continuous and Auto Recovery
Switching Frequency........................5V and Lower 400kHz (typ)
ENVIRONMENTAL SPECIFICATIONS
Voltage
Operating Temperature...................-40°C to +100°C Case
Storage Temperature...............................-55°C to +125°C
Temperature Coefficient......................................0.02%/°C
Thermal Shutdown Range............................ 105 to 115°C
PHYSICAL SPECIFICATIONS
Package size.....................................2.28” X 1.45” X 0.50”
All specifications apply at +25°C ambient unless otherwise noted.
6/6/02
1
603 778 2300
WWW
.
WALLINDUSTRIES
.
COM
UP TO 100 WATTS
BQ SERIES
Input
Voltage
36-75
Output
Voltage
1.5
1.8
2
2.5
3.3
5
5
5
12
15
Output
Current
20A
20A
20A
20A
20A
10A
15A
20A
10A
10A
Model
Number
BQ48S1.5-30A *
BQ48S1.8-36A *
BQ48S2-40A
BQ48S2.5-50A *
BQ48S3.3-66A
BQ48S5-50A *
BQ48S5-75A
BQ48S5-100A
BQ48S12-120A
BQ48S15-150A *
NOTES:
1) For negative logic, Remote ON/OFF, add “R”
suffix
2) Standard lead length .125”
suffix 1 = .110”
suffix 2 = .150”
suffix 3 = .180”
suffix 4 = .210”
suffix 5 = .145”
3) For other input voltages, please contact the
factory at 1 (888) 597-WALL.
4) 3.3V out and less have inserts at 2 places.
5) Add “T” suffix for Tyco® trim-compatible.
note: 1) “A” suffix is for open construction
2) for other input voltages, please consult
the factory at: mail@wallindustries.com
* = safety approvals pending
A = open frame R = reverse logic T = Tyco® trim
SEE NOTE 4
6/6/02
WWW
.
WALLINDUSTRIES
.
COM
603 778 2300
2
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