New Industry Products

Emerson Intros Astec LPQ173 Low-Power Switcher

November 02, 2004 by Jeff Shepard

Emerson Network Power, a business of Emerson (St. Louis, MO), introduction its new LPQ173 switching power supply from Astec Power (Carlsbad, CA). With active power-factor correction to minimize input harmonic distortion, the LPQ173 switcher accepts 85 Vac to 264 Vac, 120 Vdc to 370 Vdc input, and is suitable for 1U (1.75 in) rack installations or other low-profile applications.

Providing up to 175 W of output power with 30 CFM forced air or 110 W with convection cooling, the switcher is suited for a wide variety of applications, including telecommunications, networking, test and measurement equipment, single-board computers, gigabit Ethernet devices, and medical instrumentation.

Measuring 1.5 in high, the LPQ173 has a trim footprint of 4.25 in x 8.5 in and can be set up for lengthwise or crosswise airflow. It includes a built-in Class B EMI filter, remote sense and single-wire parallel on the two primary outputs that enable current sharing to balance loads. The device also features overload and over-voltage protection as well as thermal overload protection. The LPQ173 models have an operating temperature range of 0 °C to 50 °C without de-rating and can function at up to 70 °C by de-rating each output 2.5%/°C.

With a quad output, the LPQ173 features adjustable voltages on three of the four outputs. It also provides two primary low-voltage, high-current outputs that are adjustable from 3.3 V to 5.5 V. In addition, the unit features IEC EN61000-3-2 compliance, power fail and remote inhibit, and low output ripple. The LPQ173 demonstrates a mean time between failures of over 550,000 hours at full load at 25 °C ambient conditions while complying with worldwide safety and performance standards from UL, CSA, VDE, NEMKO, CB and CE.

Available now, pricing begins at $145 in OEM quantities.