
Features
DATEL’s BMP Models are fully potted, 25-40 Watt, dual-output DC/DC convert-
ers designed to meet UL1950 and EN60950-1 safety standards. The
combination the BMP’s higher efciencies and thermally conductive potting com-
pound enables these devices to achieve higher operating temperatures
without derating. The 2" x 3" BMP "footprint" conforms to the standard pinout
and pin geometries of most 3" x 3" devices (a 33% space savings) while
delivering 60% more power (40W vs. 25W).
Applicable to a wide range of telecom, computer and other OEM applications,
BMP Model DC/DC’s offer ±5V, ±12V and ±15V outputs. They operate from four
different input voltage ranges with total available output being a function of the
selected range. "Q12" models operate from 10-36V and deliver 25W. "Q48" models
operate from 18-75V and deliver 30W. For "D24" and "D48" models, the input
ranges and output powers are 18-36V at 35W and 36-75V at 40W, respectively.
These devices employ corrosion-resistant metal cases with plastic headers.
Heat-generating transformer cores and power semiconductors are mounted directly
to the cases, which have threaded inserts for optional add-on heat sinks or pcb
mounting. Temperature derating information is provided for operation with and with-
out heat sinks and forced air ow.
All devices feature input pi lters, input overvoltage shutdown, output overvolt-
age protection, output current limiting, and thermal shutdown. UL, CSA, EN and IEC
compliance testing is currently in progress (75V-input devices will be CE marked) as
are full EMI/EMC characterizations. Contact DATEL for the latest available informa-
tion.
Figure 1. Simplied Schematic
OPTO
ISOLATION
REFERENCE &
ERROR
AMPLIFIER
PWM
CONTROLLER
+VIN
–VIN
ON/OFF
CONTROL
TRIM
COMMON
+VOUT
–VOUT
CASE
–VIN
PWM
■
Higher operating temperatures
Fully potted
Designed to meet UL1950 and
EN60950-1 (basic insulation)
mark available (75V-input models)
Fully isolated, 1500Vdc guaranteed
25/30/35/40W output power
Standard pinout! Smaller size!
New 2" x 3" package ts 3" x 3" footprint
±5V, ±12V or ±15V outputs
Four input voltage ranges:
10-36V, 18-36V
18-75V, 36-75V
High efciencies (to 88%)
Fully I/O protected
VOUT trim and on/off control
Modications and customs for OEM’s
Typical topology is shown
BMP Models
25-40W, Dual Output, DC/DC Converters
MDC_BMP25-40W.C01 Page 1 of 6
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com
www.murata-ps.com/support