BWR-5/3-3.3/4.25-D12A 查看數據表（PDF） - DATEL Data Acquisition products

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BWR-5/3-3.3/4.25-D12A

Dual Output Mixed Voltage, BWR Models5V and 3.3V, Independent Dual Output 30 Watt, DC/DC Converters

DATEL Data Acquisition products  

®

®

INNOVATION and EXCELLENCE

Dual Output

Mixed Voltage, BWR Models

5V and 3.3V, Independent Dual Output

30 Watt, DC/DC Converters

Features

! Independently regulated 5V/ 3.3V outputs

! 5V @ 3A/3.3V @ 4.25A simultaneously

delivered

! Independent VOUT Trim pins for margining

! Independent On/Off Control pins

! 88% efficiency; 75mV ripple/noise

! Input ranges: 10-18V, 18-36V or 36-75V

! UL 1950 and EN60950 safety approvals

! Fully isolated, 1500Vdc guaranteed

! Input under and overvoltage shutdown

! Independent OVP; short circuit protection

! Thermal shutdown

DATEL's BWR series of DC/DC converters now includes two independent con-

verters in one 2" x 2" package. The BWR-5/3-3.3/4.25 family provides both 5V at 3

Amps and 3.3V at 4.25 Amps for a combined output power of 30 Watts from input

ranges of 10V to 18V (-D12A), 18 to 36V (-D24A), or 36 to 75V (-D48A).

Each output is regulated by its own control loop to provide ±1% load and ±0.5%

line regulation. Individual trim pins and a negative or positive on/off control pin

allow independent adjustment of output voltages and any combination of power-on

sequencing between the 5V and 3.3V outputs. A high efficiency of 88% allows full

load operation up to +65°C ambient temperature in a still air environment. Although

functionally independent, both outputs are driven from synchronized PWMs to

prevent asynchronously generated beat frequencies.

Housed in a plastic case, all models include input Pi filtering, input overvoltage

protection, independent output short circuit and current limiting protection and

independent output overvoltage protection as well as thermal shutdown. A Sync

option is available in place of 3.3V on/off control. These devices meet IEC950,

UL1950 and EN6950 safety standards. CB reports are available upon request.

"D48A" models are CE marked (meet LVD requirements).

+INPUT

+5V OUTPUT

–INPUT

5V ON/OFF

CONTROL

INPUT UNDERVOLTAGE

AND OVERVOLTAGE

COMPARATORS

3.3V ON/OFF

CONTROL

SWITCH

CONTROL

PWM

CONTROLLER

OPTO

ISOLATION

REFERENCE &

ERROR AMP

PWM

CONTROLLER

OPTO

ISOLATION

REFERENCE &

ERROR AMP

+5V

OUTPUT

RETURN

+3.3V OUTPUT

SWITCH

CONTROL

+3.3V

OUTPUT

RETURN

Figure 1. Simplified Schematic

DATEL, Inc., Mansfield, MA 02048 (USA) · Tel: (508)339-3000, (800)233-2765 Fax: (508)339-6356 · Email: sales@datel.com · Internet: www.datel.com

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