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®
INNOVATION and EXCELLENCE
NEW
1.5, 1.8 & 2.5 Volt
Models
Single Output
A-Series, UWR Models
High-Density, 2" x 1"
1-6 Amp, 9-15 Watt DC/DC's
A - S E R I E S
The new 1.5V, 1.8V and 2.5V models in DATEL’s flagship 9-15 Watt A-Series
can source a continuous 6 Amps. This is the most "low-voltage" current available
from a standard 1" x 2" package, and these power converters exemplify DATEL’s
relentless drive to bring you more power/current, from standard packages, without
compromising reliability or resorting to thermal specmanship.
Features
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1.5/1.8/2.5VOUT models source 6 Amps
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3.3VOUT models source 4.25 Amps
5/12/15VOUT models deliver full 15 Watts
310kHz synchronous-rectifier topologies
Guaranteed efficiencies to 86%
By combining a high-frequency (310kHz), high-efficiency (to 88%), synchronous-
rectifier topology with the newest components and time-tested, fully automated,
SMT-on-pcb construction, these UWR Models are able to bring you 9-15W (@ up
to 6A) in the standard 2" x 1" package from which most competitors can only get
5-10W (@ 3-4A). All UWR’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 1.5, 1.8, 2.5, 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 feature input pi filters, input undervoltage and overvoltage lockout, input
reverse-polarity protection, output overvoltage protection, output current limiting, and
continuous short-circuit protection. On/off control, sync, and output-trim functions are
optional (see Optional Functions). All models are certified to IEC950, UL1950 and
EN60950 safety requirements for OPERATIONAL insulation. "D48" models (36-75V
inputs) are CE marked.
Choice of 3 input voltage ranges:
10-18V, 18-36V, 36-75V
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–40 to +60/70°C ambient w/o derating
Fully isolated (1500Vdc); I/O protected
UL1950/EN60950 certified
CE mark (75VIN models)
Standard 2" x 1" packages and pinouts
Optional VOUT trim, sync, on/off control
Pin compatible with Lucent LC/LW Series
UWR 9-15W 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.
+VIN
+VOUT
SWITCH
CONTROL
–VOUT
–VIN
PWM
CONTROLLER
OPTO
ISOLATION
REFERENCE &
ERROR AMP
TRIM
(OPTIONAL)
UVLO & OVLO
COMPARATORS
ON/OFF
CONTROL
OR SYNC
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 forward architecture.
(OPTIONAL)
Figure 1. Simplified Schematic
DATEL, Inc., Mansfield, MA 02048 (USA)
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Tel: (508)339-3000, (800)233-2765 Fax: (508)339-6356 · Email: sales@datel.com · Internet: www.datel.com