®
®
INNOVATION and EXCELLENCE
Single Output
UEP Models
High-Density, 2" x 1"
1-4.5 Amp, 11-18 Watt DC/DC's
The UEP 11-18Watt series DC/DC converter is an alternative pinout for DATEL’s
flagship A-Series. An external pinout configuration affords the design layout to be
oriented for optimal thermal performance thereby increasing available output power
as much as 20%. Available in a 1" x 2" package, these converters can deliver up to
18 Watts at the same ambient temperatures as their 15 Watt counterparts.
By combining a high-frequency (340kHz), high-efficiency (to 88%), synchronous-
rectifier topology with the newest components and time-tested, fully automated,
SMT-on-pcb construction, these UEP Models are able to bring you 11-18W in the
standard 2" x 1" package from which most competitors can only get 5-10W. All
UEP’s deliver their full output power over ambient temperature ranges from –40°C
to as high as +70°C (model and input voltage dependent) without heat sinks or
supplemental forced-air cooling. Devices derate to +100°C.
Output voltages are 3.3, 5, 12 or 15 Volts. Input voltage ranges are 10-18V
("D12" models), 18-36V ("D24" models) or 36-75V ("D48") models. All models fea-
ture input pi filters, input undervoltage and overvoltage lockout, input reverse-polarity
protection, output overvoltage protection, output current limiting, and continuous
short-circuit protection. Standard features also include On/Off Control and output-
trim. All models are certified to IEC950, UL60950 and EN60950 safety requirements
for OPERATIONAL insulation. "D48" models (36-75V inputs) are CE marked.
UEP 11-18W DC/DC’s are packaged in low-cost, light-weight, diallyl phthalate
(UL94V-0 rated) plastic packages with standoffs. EMC compliance is achieved via a
low-noise design rather than through expensive metal shielding.
Features
Models Include
3.3V @ 4.5A
5V @ 3.5A
12V @ 1.2A
15V @ 1A
Choice of 3 input ranges:
10-18V, 18-36V, 36-75V
Guaranteed efficiencies to 86%
11-18 Watts in 1" x 2" package
340kHz synchronous-rectifier topologies
–40 to +60/70°C ambient w/o derating
Fully isolated (1500Vdc); I/O protected
Trim and On/Off Control
UL60950/EN60950 certified
CE mark (75VIN models)
+INPUT
+OUTPUT
SWITCH
CONTROL
➀
–OUTPUT
➀
–INPUT
PWM
CONTROLLER
OPTO
ISOLATION
REFERENCE &
ERROR AMP
TRIM
UVLO & OVLO
COMPARATORS
➀
1.5, 1.8, 2.5, 3.3V and 5V-output models use the synchronous-rectifier configuration shown above.
12V and 15V-output models employ a standard, diode-rectification architecture.
ON/OFF
CONTROL
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