UWQ-12/17-Q48T-C Series Isolated DOSA Quarter-Bric

By Murata Power Solutions Inc 74

UWQ-12/17-Q48T-C Series Isolated DOSA Quarter-Bric

Murata Power Solutions' UWQ-12/17-Q48T series offers high output current (up to 17 A) in an industry-standard “quarter-brick” package requiring no heatsink for most applications. The UWQ-12/17-Q48T is trimmable from 10.8 VOUT to 13.2 VOUT and includes output sense pins to compensate for output voltage inaccuracy delivered at the load. The UWQ-12/17-Q48T series delivers fixed DC output voltages up to 204 W (12 V at 17 A) for printed circuit board mounting. Wide range inputs of 18 to 75 VDC (48 V nominal) are ideal for wireless base stations, datacom, and telecom systems. Advanced automated surface-mount assembly, thermal-management technology, and planar magnetics deliver high-reliability galvanic isolation rated at 2250 VDC for basic insulation. To power digital systems, the output delivers fast settling to current steps and stable operation where higher capacitive loads are required. Excellent ripple and noise specifications deliver stable 12 V BUS for IBC applications. For systems needing controlled startup/shutdown, an external remote On/Off control may use either positive or negative logic. Several self-protection features include input under-voltage lockout, output overvoltage protection, and over-temperature shutdown (using an on-board temperature sensor). Overcurrent protection using the “hiccup” auto-restart technique provides indefinite short-circuit protection. The synchronous rectifier topology along with advanced thermal management delivers high efficiency for minimal heat generation and “no heatsink” operation. The UWQ-12/17-Q48T series is certified to safety standards UL/EN/IEC/CSA 60950-1, 2nd edition. It meets Class B EMI conducted emission compliance to EN55022, CISPR22 with an external filter.


  • Fixed DC output, 12 V at 17 A (204 W)
  • Industry-standard quarter-brick 2.3˝ x 1.45˝ x 0.46˝ (58.4 x 36.8 x 11.7 mm) package without baseplate (0.5˝ [12.7 mm] with baseplate)
  • Wide range VIN 18 to 75 VDC
  • Trimmable 10.8 VOUT to 13.2 VOUT at 210 W max
  • 2250 V basic isolation
  • Remote On/Off enable control
  • DOSA-compatible pinouts, with trim and sense
  • High-efficiency synchronous-rectifier topology
  • Stable no-load operation
  • Monotonic startup into pre-bias output condition
  • Certified to UL/EN 60950-1, CSA-C22.2 No. 60950-1, 2nd edition safety approvals
  • Extensive self-protection, OVP, input under-voltage, current limiting, and thermal shutdown