UHE Series
POWER ELECTRONICS DIVISION
Isolated, High Efficiency, 1.6" x 2" 2-10 Amp, 12-30 Watt DC/DC's
Housed in smaller, 1.6" x 2" x 0.40" (41 x 51 x 10.2mm) packages
carrying the standard 2" x 2" pinout, C&D's new UHE Series DC/
DC Converters deliver more current/power (up to 10A/30W) than
currently available from either package size.
FEATURES
PRODUCT OVERVIEW
n most IOUT/POUT in this format
The
The UHE 12-30W Series of high-efficiency, isolated
DC/DC's provide output power ranging from 10
Amps @ 1.2V to 2 Amps @ 15V. Offering both
2:1 and 4:1 input voltage ranges, UHE's meet VIN
requirements from 9 to 75 Volts.
n
Lower priced than bricks
n
Small 1.6" x 2" x 0.4" plastic package with
standard 2" x 2" pinout
n
Output configurations:
1.2/1.5/1.8/2.5VOUT @ 10 Amps
3.3/5VOUT @ 25 Watts
5/12/15VOUT @ 30 Watts
n input ranges from 9-75 Volts
Five
n
Efficiencies as high as 91.5%
n
Stable no-load operation
n
Optional Sense pins for low VOUT
n
Thermal shutdown, I/O protected
n Vdc I/O BASIC Insulation
1500
n
UL/EN60950 certified; CE marked for Q48
models
n compliant
RoHS
Taking full advantage of the synchronous-rectifier, forward topology, UHE's boast outstanding
efficiency (some models exceed 91%) enabling
full-power operation to ambient temperatures as
high as +60°C, without air flow. Assembled using
fully automated, SMT-on-pcb techniques, UHE's
provide stable no-load operation, excellent line
(±0.1%) and load (±0.15%) regulation, quick step
response (200µsec), and low output ripple/noise
(50-100mVp-p). Additionally, the UHE's unique
output design eliminates one of the topology's few
shortcomings–output reverse conduction.
All devices feature full I/O fault protection including:
input overvoltage and undervoltage shutdown,
precise output overvoltage protection (a rarity on
low-voltage outputs), output current limiting, shortcircuit protection, and thermal shutdown.
All UHE models incorporate a VOUT Trim function and
an On/Off Control pin (positive or negative polarity).
Low-voltage models (1.2V to 5V) offer optional
sense pins facilitating either remote load regulation or current sharing for true N+1 redundancy.
All models are certified to the BASIC insulation
requirements of UL/EN60950, and 48VIN (75V max.)
models carry the CE mark. Selected models are
RoHS compliant (Reduction of Hazardous Substances).
SIMPLIFIED SCHEMATIC
+OUTPUT
(6)
+INPUT
(1)
SWITCH
CONTROL
+SENSE
(5)
–OUTPUT
(7)
THERMAL
SHUTDOWN
–INPUT
(2)
*
OPTO
ISOLATION
OVERVOLTAGE
COMPARATOR
PWM
CONTROLLER
UVLO & OVLO
COMPARATORS
OPTO
ISOLATION
REFERENCE &
ERROR AMP
–SENSE
(8)
VOUT TRIM
(9)
ON/OFF
CONTROL
(4)
*One phase of two is shown.
Optional comparator feedback. Contact DATEL.
Sense pins are optional on 1.2-5VOUT models ("R" suffix).
Typical topography is shown.
For full details go to
www.cd4power.com/rohs
www.cd4power.com
DC/DC CONVERTERS
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