®
®
A SUBSIDIARY OF C&D TECHNOLOGIES
Single Output
A-Series, UWR Models
High-Density, 1" x 2"
6 Amp/15 Watt, 1.2-15VOUT DC/DC's
A-SERIES
Features
■
1.2-2.5VOUT models source 6 Amps
■
3.3VOUT models source 4.25 Amps
■
5/12/15VOUT models deliver full 15 Watts
■
Synchronous-rectifier topologies
■
Guaranteed efficiencies to 88%
■
Choice of 3 input voltage ranges:
10-18V, 18-36V, 36-75V
■
–40 to +60/70°C ambient w/o derating
■
Fully isolated (1500Vdc); I/O protected
■
UL1950/EN60950 certified
■
CE mark (75VIN models)
■
Standard 1" x 2" packages and pinouts
■
Optional VOUT trim and on/off control
■
Pin compatible with Lucent LC/LW Series
The new 1.2, 1.5V, 1.8V and 2.5V models in DATEL’s flagship 7-15 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.
By combining a high-frequency, 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 7-15W (@ up to 6A) in the
standard 1" x 2" 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 1,2, 1.5, 1.8, 2, 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 and output-trim functions are
optional (see Optional Functions). All models are certified to IEC950, UL1950 and
EN60950 safety requirements. D48 models (36-75V inputs) are CE marked.
UWR 7-15W 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
(1)
+VOUT
(4)
SWITCH
CONTROL
➀
COMMON
(6)
–VIN
(2)
PWM
CONTROLLER
ON/OFF
CONTROL
(3)
(OPTIONAL)
OPTO
ISOLATION
REFERENCE &
ERROR AMP
TRIM
(5)
(OPTIONAL)
UVLO & OVLO
COMPARATORS
➀ 1.2 to 5V-output models use the synchronous-rectifier configuration shown above.
12V and 15V-output models employ a standard forward architecture.
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
