Dual Output BST Models
www.murata-ps.com
Low-Cost, High Reliability 3 Watt, DC/DC Converters
Typical units
FEATURES
PRODUCT OVERVIEW
Lowest cost! Highest reliability!
100% SMT-on-pcb, including magnetics
Rarely, has a Series of low-power DC/DC converters
been defined by both low cost and Murata’s quality
and reliability. Our new BST Series of dual-output
3W DC/DC’s achieves this “best-of-both-worlds”
status by implementing a proven circuit architecture
(170-200kHz flyback design) as a full, SMT-on-pcb
assembly (including surface-mount magnetics) that is
truly 100% automatically assembled. Packaged in miniature 1.25" x 0.8", DIP-like plastic packages (UL94V-0
rated) and requiring no external components, BST
Series DC/DC’s bring true component-like convenience
to designers of today’s distributed power systems.
Output voltages are ±5, ±12 or ±15 Volts. Input
voltage ranges are 4.5-9V (“D5” models), 9-18V
(“D12” models) or an ultra-wide 18-72V (“D48”
models). BST DC/DC’s are fully isolated (1000Vdc
guaranteed) and include input (pi type) and output
filters within their package. Output transient response
100% automatically assembled
Standard "DIP" package and pinouts
isolated, 1000Vdc guaranteed
Fully
±12 or ±15 Volt outputs
±5,
Choice of 3 wide-range inputs:
4.5-9 Volts
9-18 Volts
18-72 Volts
Guaranteed efficiencies to 75%
–40 to +75°C full-power operation
Internal input/output filtering
UL1950/C22.2 No. 950/IEC950-1 certified
is a quick 200μsec, while output ripple and noise are
typically 75mVp-p.
These rugged modules are fully encapsulated
with a thermally conductive potting compound that
contributes to their outstanding moisture/vibration
resistance and impressive MTBF. They operate over
the full –40 to +75°C temperature range without derating. All models have been thoroughly characterized
(electrically, mechanically and thermally), qualified
(including HALT), and EMI/EMC tested. Additionally,
they are certified to UL1950, CSA 22.2 No. 950 and
IEC950.
Murata’s BST Model 3W DC/DC’s are excellent
selections for telecom/datacom, computer and
process-control applications demanding small size,
low cost and high reliability. If required, their design
“flexibility” allows for easy modification to your
application-specific requirements.
+VOUT
+VIN
COMMON
–VOUT
–VIN
PWM
CONTROLLER
OPTO
ISOLATION
REFERENCE &
ERROR AMP
Typical topology is shown.
Figure 1. Simplified Schematic
For full details go to
www.murata-ps.com/rohs
www.murata-ps.com/support
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