5V and 3.3V, "Half-Brick"
75 Watt, DC/DC Converters
Dual Output
Mixed Voltage, BCP Models
Features
As your new, mixed-logic (5V and 3.3V) design evolves and your current require-
ments change, your new DC/DC converter will not. DATEL’s BCP-5/15-3.3/15-D24
(18-36V input) and BCP-5/15-3.3/15-D48 (36-75V input) are fully isolated DC/DC
converters providing both 5V and 3.3V outputs. Housed in standard "half-brick"
packages (2.3" x 2.4" x 0.525"), the BCP’s can support any combination of 5V and
3.3V loading up to a combined total of 15 Amps. Both outputs are fully isolated
(1500Vdc) and independently line (±0.2%) and load (±0.5% and ±0.6%) regulated.
Both BCP models feature input pi filters, input undervoltage and overvoltage
shutdown, input reverse-polarity protection, output overvoltage protection, current
limiting, and thermal shutdown. Each has an on/off control function, or an optional
sync capability and the two output voltages can be trimmed independently.
BCP Model DC/DC’s deliver low noise (50mVp-p), high efficiency (87%) and are
fully specified for –40 to +100°C operation. Utilization of metal baseplate technology
with threaded inserts permits easy heat-sink attachment and/or pcb mounting. These
devices meet IEC950, UL1950, EN60950 and VDE safety standards, including
BASIC insulation requirements. CB reports are available on request. "D48" models
are CE marked (meet the requirements of LVD).
Figure 1. Simplified Schematic
INNOVATION and EXCELLENCE
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Independent 5V and 3.3V outputs
Each output fully regulated
No minimum load requirements
Up to 15 Amps per output
75 Watts total output power
Standard "half-brick" package
UL1950, EN60950 and VDE safety
approvals (BASIC insulation)
Fully isolated, 1500Vdc guaranteed
18-36V or 36-75V input ranges
mark available (75V-input models)
Input under and overvoltage shutdown
Continuous short-circuit protection
Thermal shutdown
+INPUT
–INPUT
SWITCH
CONTROL
+5V OUTPUT
+3.3V OUTPUT
5V RETURN
3.3V RETURN
3.3V TRIM
5V TRIM
MAG AMP
CONTROLLER
PWM
CONTROLLER
REFERENCE &
ERROR AMP
OPTO
ISOLATION
ON/OFF
CONTROL
(SYNC)
UV & OV
COMPARATORS
REFERENCE &
ERROR AMP
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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