PDF《PRODUCT OVERVIEW》

MDC_ULS-30W_C08? Page

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30 FEATURES n Small footprint DC/DC converter, ideal for embedded applications n 1.

30 x 0.90 x 0.36 open frame package n Industry standard DOSA brick format and pinout with surface mount option n 2:1 Input Voltage Range (36V-75V, D48) n

2250 Volt Basic input/output isolation (48V models) n Up to

30 Watts total output power with overtemperature shutdown n High efficiency synchronous rectifier forward topology n Stable no-load operation with no required external components n Operating temperature range -40 to +85°C with derating n Certified to UL/EN/IEC 60950-1, CAN/CSA C22.2 No. 60950-1, EN60950-1 safety approvals, 2nd Edition n Extensive self-protection shut down features The world of brick DC/DC converters has seen a steady size reduction. The ULS series makes an- other dramatic size shrink down to a sixteenth- brick width (0.91 inches) while still retaining up to 30?Watt output and full

2250 Volt DC isolation. The PC-board mount converter family accepts 36?to

75 Volts DC inputs and delivers fixed outputs regulated to within ±0.125%. The ULS converters are ideal for datacom and telecom applications, cell phone towers, data centers, server farms and network repeaters. ULS outputs may be trimmed within -20% to +10% of nominal output while delivering fast set- tling to current step loads and no adverse effects from higher capacitive loads. Excellent ripple and noise specifications assure compatibility to circuits using CPU'

s, ASIC'

s, programmable logic and FPGA'

s. No minimum load is required. For systems requiring controlled startup/shutdown, an external remote On/Off control may use a switch, transistor or digital logic. Many self-protection features on the ULS series avoid both converter and external circuit hazards. These include input undervoltage lockout and overtemperature shutdown. The outputs current limit using the hiccup autorestart technique and the outputs may be short-circuited indefinitely. Additional features include output overvoltage and reverse conduction elimination. The synchronous rectifier forward topology yields high efficiency for minimal heat buildup and no fan operation. PRODUCT OVERVIEW F1 External DC Power Source Reference and Error Ampli?er ? Switching ? Filters ? Current Sense -Vout (4) +Vout (8) Trim (6) On/Off Control (2) -Vin (3) Open = On Closed = Off +Vin (1) (Positive logic) Controller and Power Transfer Isolation Barrier +Sense (7)* -Sense (5)* Typical topology is shown Figure 1. Simplified Block Diagram REG.-Nr. D216 Typical units *Sense is included on the ULS-3.3/8-D48 and ULS-5/6-D48 only. PART NUMBER STRUCTURE MDC_ULS-30W_C08? Page

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30 PERFORMANCE SPECIFICATIONS SUMMARY AND ORDERING GUIDE ? Root Model ? Output Input Efficiency Case (inches) Vout (V) Iout (A, max.) Power (W) R/N (mV pk-pk) Regulation (max.) ? Vin Nom. (V) Range (V) Iin, no load (mA) Iin, full load (A) Typ. Max. Line Load Min. Typ. ULS-3.3/8-D48 3.3

8 26.5

90 130 ±0.1% ±0.1%

48 36-75

75 0.58 89% 90% 1.30x0.90x0.36 ULS-5/6-D48

5 6

30 75

100 ±0.125% ±0.1%

48 36-75

20 0.69 89% 91% 1.30x0.90x0.36 ULS-12/2.5-D48

12 2.5

30 130

150 ±0.125% ±0.125%

48 36-75

25 0.71 86% 87.7% 1.30x0.90x0.36 ULS-15/2-D48

15 2

30 115

125 ±0.125% ±0.125%

48 36-75

25 0.70 87.5% 89% 1.30x0.90x0.36 Maximum Rated Output Current Current in Amps Sixteenth Brick Series Nominal Output Voltage: ULS - / D48 -

12 2.5 N Input Voltage Range: D48 = 36-75 Volts (48V nominal) On/Off Control Logic: N = Negative P = Positive ? Please refer to the Part Number Structure when ordering. ? All specifications are typical at nominal line voltage and full load, +25°C unless otherwise noted. See detailed specifications. Output capacitors are