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manual abstract
. . in the smallest space . . . over the widest temperature range . . . call on DATEL’s USQ Series 20 Amp "quarter bricks." Occupying 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, thermalderating performance. The 1.8VOUT 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 regulation (to ±0.05% max. line and load), low noise (to 50mVp-p), quick step response (200.sec), and an array of protection features. I/O protection includes input under- voltage lockout and reverse-polarity protection, as well as output overvoltage protection, 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 certifications, as well as EMC compliance testing and qualification testing (including HALT) have been successfully completed. Contact DATEL for copies of the latest reports. 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 –VIN (1) +VIN (3) OPTO ISOLATION PWM CONTROLLER REFERENCE & ERROR AMP INPUT UNDERVOLTAGE, INPUT OVERVOLTAGE, AND OUTPUT OVERVOLTAGE COMPARATORS * Can be ordered with positive (standard) or negative (optional) polarity. REMOTE ON/OFF CONTROL* (2) +SENSE (7) –SENSE (5) +VOUT (8) VOUT TRIM (6) –VOUT (4) SWITCH 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: USQ Series 20A, SINGLE OUTPUT DC/DC CONVERTERS . Performance Specifications and Ordering Guide Model VOUT . (Volts) IOUT (Amps) Output R/N (mVp-p) . Regulation (Max.) VIN Nom. (Volts) . InpRange (Volts) . ut IIN . (Amps) Efficiency Package (Case, Pinout) (Stamp comment ObsProduct JIMF 14.08.2006 15:51:10 blank) Typ. Max. Line Load . USQ-1.2/20-D48 1.2 20 25 50 ±0.05% ±0.05% 48 36-75 0.63/0.87 80% C33, P32 USQ-1.5/20-D48 1.5 20 40 65 ±0.05% ±0.05% 48 36-75 0.75/1.03 85% C33, P32 USQ-1.8/20-D48 1.8 20 50 80 ±0.05% ±0.05% 48 36-75 0.88/1.23 85% C33, P32 USQ-2.5/20-D48 2.5 20 60 75 ±0.05% ±0.05% 48 36-75 1.18/1.62 87% C33, P32 USQ-3.3/20-D48 3.3 20 70 85 ±0.05% ±0.05% 48 36-75 1.54/2.1 89% C33, P32 USQ-5/20-D24 5 20 90 125 ±0.05% ±0.05% 24 18-36 5.07/6.21 90% C33, P32 USQ-5/20-D48 5 20 90 125 ±0.05% ±0.05% 48 36-75 2.33/3.13 90% C33, P32 USQ-6.5/16-D24 . 6.5 16 90 125 ±0.05% ±0.05% 24 18-36 4.95/6.60 87.5% C33, P32 USQ-12/8.3-D24 . 12 8.3 135 150 ±0.05% ±0.05% 24 18-36 90%4.61/6.08 C33, P32 USQ-12/8.3-D48 . 12 8.3 120 140 ±0.05% ±0.05% 48 36-75 90%2.30/2.41 C33, P32 USQ-15/6.7-D24 15 6.7 140 155 ±0.05% ±0.05% 24 18-36 4.65/6.14 91% C33, P32 USQ-15/6.7-D48 15 6.7 145 175 ±0.05% ±0.05% 48 36-75 2.30/2.42 91% C33, P32 USQ-18/5.6-D24 18 5.6 145 175 ±0.05% ±0.05% 24 18-36 5.05/6.17 91% C33, P32 USQ-18/5.6-D48 18 5.6 145 175 ±0.05% ±0.05% 48 36-75 2.30/2.42 91% C33, P32 USQ-24/4.2-D24 24 4.2 115 130 ±0.05% ±0.05% 24 18-36 5.05/6.17 92% C33, P32 USQ-24/4.2-D48 24 4.2 115 130 ±0.05% ±0.05% 48 36-75 2.27/3.18 92% C33, P32 USQ-48/2.1-D48 . 48 2.1 115 200 ±0.01% ±0.01% 48 36-75 2.27/3.03 94.5% C33, P32 . Typical at TA = +25°C under nominal line voltage and full-load conditions, unless otherwise noted. All models are tested and specified with external output capacitors (1.F ceramic in parallel with 10.F tantalum). . Contact DATEL for fixed output voltages (such as 2, 6.5, –5.2V) or higher output currents (such as 12V @ 12.5A) other than those listed. . Ripple/Noise (R/N) is tested/specified over a 20MHz bandwidth. Output noise may be further reduced with the installation of additional external output filtering. See I/O Filtering, Input Ripple Current, and Output Noise for details. . The load-regulation specs apply over the 0-100% range. All models in the USQ Series have no minimum-load requirements and will regulate within spec under no-load conditions (with perhaps a slight increase in ripple/noise)....