Akros Silicon has announced four new energy-efficient devices for a wide range of high-power, single-input and single-output DC-DC controllers. The AS12xx series is configurable for flyback, forward, boost or buck power topologies used in both isolated and non-isolated converter designs. Capable of providing up to 100W, the AS12xx devices' current-mode architecture provides a fast-loop response and very low "no load" power consumption. Wide input voltage range of 8.5V to 57V and high single-rail output current enable AS12xx devices to be used in a wide variety of consumer electronic equipment such as set-top boxes, LCD televisions, DVRs, printers, indoor WiFi access points as well as in industrial Ethernet, motor control applications, automotive power and telematics sub-systems. AS1228, AS1230, AS1257 and AS1260 devices integrate Electrostatic Discharge (ESD) and thermal protection, 100kHz to 500kHz programmable Pulse-Width Modulation (PWM) operation and programmable soft-start. FET gate drive signals are shaped to minimize switching noise and improve Electromagnetic Interference (EMI) performance. The AS12xx family provides superior gate driver output resistance and rise/fall times, further optimising system performance to deliver > 92% efficiency.
