Datel 20A User Manual
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
–V
IN
(1)
+V
IN
(3)
OPTO
ISOLATION
PWM
CONTROLLER
REFERENCE &
ERROR AMP
INPUT UNDERVOLTAGE, INPUT
OVERVOLTAGE, AND OUTPUT
OVERVOLTAGE COMPARATORS
OVERVOLTAGE, AND OUTPUT
OVERVOLTAGE COMPARATORS
* Can be ordered with positive (standard) or negative (optional) polarity.
REMOTE
ON/OFF
CONTROL*
(2)
+SENSE
(7)
–SENSE
(5)
+V
OUT
(8)
V
OUT
TRIM
(6)
–V
OUT
(4)
SWITCH
CONTROL
Single Output
USQ 20A Models
High-Density, Quarter-Brick
20 Amp, DC/DC Converters
For low-voltage, high-current power . . . in the smallest space . . . over the widest
temperature range . . . call on DATEL’s USQ Series 20 Amp "quarter bricks." Occupy-
ing the industry-standard package (1.45" x 2.28" x 0.40") and pinout, USQ’s house
their fully-synchronous, forward design topology in a "two-board" assembly crowned
with a heat-sink-compatible aluminum baseplate. This combination of outstanding
thermal and electrical efficiencies endows USQ’s with industry-leading, thermal-
derating performance. The 1.8V
ing the industry-standard package (1.45" x 2.28" x 0.40") and pinout, USQ’s house
their fully-synchronous, forward design topology in a "two-board" assembly crowned
with a heat-sink-compatible aluminum baseplate. This combination of outstanding
thermal and electrical efficiencies endows USQ’s with industry-leading, thermal-
derating performance. The 1.8V
OUT
model, for example, delivers its full 20 Amps up to
+55
°C with a mere 200 lfm air flow.
USQ’s achieve all the performance metrics required for contemporary, on-board
power processing: high isolation (1500Vdc), superior efficiency (to 91%), tight regula-
tion (to
tion (to
±0.05% max. line and load), low noise (to 50mVp-p), quick step response
(200
µsec), and an array of protection features. I/O protection includes input under-
voltage lockout and reverse-polarity protection, as well as output overvoltage pro-
tection, current limiting, short-circuit protection, and thermal shutdown. The USQ
functionality suite includes remote on/off control (positive or negative polarity), output
trim (+10/–20%), and output sense functions.
tection, current limiting, short-circuit protection, and thermal shutdown. The USQ
functionality suite includes remote on/off control (positive or negative polarity), output
trim (+10/–20%), and output sense functions.
All USQ DC/DC’s are designed to meet the BASIC insulation requirements of
UL1950 and EN60950, and all 48 Volt models will carry the CE mark. Safety certifica-
tions, as well as EMC compliance testing and qualification testing (including HALT)
have been successfully completed. Contact DATEL for copies of the latest reports.
tions, as well as EMC compliance testing and qualification testing (including HALT)
have been successfully completed. Contact DATEL for copies of the latest reports.
Figure 1. Simplified Schematic
Features
Standard, 1.45" x 2.28" x 0.40"
quarter-brick package and pinout
Outstanding thermal-derating
Output current: to 20 Amps
Outputs Voltages:
1.2/1.5/1.8/2.5/3.3/5/12/15/18/24V
Input voltage ranges:
36-75V (48V nom.)
18-36V (24V nom.)
Synchronous rectification yields high
efficiency (to 91%) and stable no-load
operation
On/Off control, trim and sense functions
Fully isolated, 1500Vdc guaranteed
Fully I/O protected; Thermal shutdown
UL1950/EN60950 (BASIC insulation)
approvals
Qual tested; HALT tested; EMI compliant
quarter-brick package and pinout
Outstanding thermal-derating
Output current: to 20 Amps
Outputs Voltages:
1.2/1.5/1.8/2.5/3.3/5/12/15/18/24V
Input voltage ranges:
36-75V (48V nom.)
18-36V (24V nom.)
Synchronous rectification yields high
efficiency (to 91%) and stable no-load
operation
On/Off control, trim and sense functions
Fully isolated, 1500Vdc guaranteed
Fully I/O protected; Thermal shutdown
UL1950/EN60950 (BASIC insulation)
approvals
Qual tested; HALT tested; EMI compliant
®
®
A SUBSIDIARY OF C&D TECHNOLOGIES
OBSOLETE PRODUCT
Contact Factory for Replacement Model