PRELIMINARY
3.3V and 2.5V, "Half-Brick"
50 Watt, DC/DC Converters
Dual Output
Mixed Voltage, BCP Models
Features
DATEL's BCP "half-brick" series has expanded to include dual-output, 3.3V and
2.5V DC/DC converters. The BCP-3.3/15-2.5/15-D24 (18-36V input) and BCP-3.3/15-
2.5/15-D48 (36-75V input) are fully isolated DC/DC converters housed in standard
"half-brick" packages (2.3" x 2.4" x 0.5"). These BCP’s can support any combination
of 3.3V and 2.5V loading up to a combined total of 15 Amps. Both outputs are fully
isolated (1500Vdc) and independently line (±0.2%) and load (±0.5%) regulated.
Both BCP models feature input pi lters, input undervoltage and overvoltage shut-
down, input reverse-polarity protection, output overvoltage protection, current limiting,
and thermal shutdown. Each has an on/off control function (positive and negative
logic versions available), and both output voltages can be trimmed independently.
BCP Model DC/DC’s deliver low noise (50mVp-p), efciency of 84% and are
fully specied 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 UL1950 and IEC/EN60950 safety standards, including BASIC insulation
requirements. CB reports are available on request. "D48" models are CE marked
(meet the requirements of LVD).
Figure 1. Simplied Schematic
INNOVATION and EXCELLENCE
■
Independent 3.3V and 2.5V outputs
Up to 15 Amps per output
Each output fully regulated
No minimum load requirements
50 Watts total output power
Standard "half-brick" package
UL1950 and IEC/EN60950 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
DATEL, Inc., Manseld, MA 02048 (USA) Tel: (508)339-3000, (800)233-2765 Fax: (508)339-6356 Email: sales@datel.com Internet: www.datel.com
+INPUT
(4)
–INPUT
(1)
SWITCH
CONTROL
+3.3V OUTPUT
(7)
+2.5V OUTPUT
(10)
3.3V RETURN
(6)
2.5V RETURN
(9)
2.5V TRIM
(8)
3.3V TRIM
(5)
REGULATOR
PWM
CONTROLLER
THERMAL
SHUTDOWN
OPTO
ISOLATION
ON/OFF
CONTROL
(3)
UV & OV
COMPARATORS
REFERENCE
& ERROR AMP
REFERENCE
& ERROR AMP