New up-rated PWM controllers from Advanced Power Electronics offer size and cost benefits

Advanced Power Electronics has updated two of its most popular PWM controllers to provide customers with space-saving and more cost-effective devices without sacrificing performance and reliability. The well-accepted APE3061 PWM controller is now available in a small 8-lead DFN package, reducing package size from 5 x 6mm (SO-8) to 3 x 3 mm, without sacrificing power-handling capability. The new APE3061GN3-HF-3 component supports input voltages from 3 to 24 V and drives an external N-channel MOSFET. The output voltage is dependent on the external N-MOSFET and is programmable using an internal reference voltage of 1.0 V and external resistors connected as a voltage divider. The controller benefits from built-in enable and thermal shutdown functions. Switching frequency is fixed, around 500 kHz, allowing for easy filtering and low noise. The size of external components can be reduced as well. A soft-start time, preventing overshoot at start-up, can be programmed by an outside capacitor. Using copper wire for internal wire bonding, the APE3061M-HF-3 PWM controller has been updated to the new APE3061AM-HF-3 version. This offers customers a more cost effective controller without downgrading performance or reliability. The new, lower cost version uses the same SO-8 Pb-free package as existing APE3061M-HF-3 controllers, which will stay in production for customers wanting to avoid requalification costs. The new APE3061AM-HF-3 device supports input voltages from 3 up to 24V, with an oscillation frequency of 500kHz and an enable/shutdown function. The pulse width varies in a range from 0 to 85%, according to the load current. Advanced Power Electronics