2-kV Isolated, Quad-Output Power SoC Delivers 92% Efficiency

Built around the company’s patented GreenEdge digital isolation technology, the AS1454 quad-output digital power SoC eliminates the need for low-speed, bulky opto-couplers and integrates the functionality of up to eight separate ICs used in many current implementations. The AS1454’s built-in cross-isolation DC-DC timing management and digital power control delivers 92% DC-DC efficiency with excellent light-load efficiency management for energy-efficient, green-power applications. The AS1454 integrates a wide input range (9 V to 72 V) isolated primary converter, a 2-kV isolation barrier, a high-current-capable buck or boost PWM controller, and two 2-A buck regulators into a single device. It can be used in 12-VDC, 24-VDC, or 24-VAC distributed power applications in industrial, building management, analog surveillance camera and automotive systems, as well as 48-V distributed power applications in telecom, datacom, industrial and medical equipment. Selectable spread-spectrum clocking on all PWMs reduces power-supply spectral noise by more than 15 dB to lower the EMI signature of the switch-mode power supplies and ease system design for EMC compliance. The AS14x4 product family consists of the AS1454, AS1444, AS1434, and AS1424 devices. The AS1454/34 are I²C-capable with advanced system diagnostics and programmability features. AS14x4 products are available in footprint-compatible, RoHS-compliant, 64-pin 9 x 9 QFN packages. AKROS SILICON INC., Sunnyvale, CA. 408-746-9000.