Power Electronics / Power Management


Synchronous buck controller

25 November 2015 Power Electronics / Power Management

The MP2908A is a high-voltage, synchronous step-down (buck) controller that directly steps down voltages from 4 V up to 60 V. Made by Monolithic Power Systems, it employs a PWM current control architecture with accurate cycle-by-cycle current limiting and is capable of driving dual N-channel MOSFETs.

Advanced asynchronous mode (AAM) enables non-synchronous operation and PFM mode to optimise light-load efficiency. The operating frequency of the MP2908A can be programmed by an external resistor or synchronised to an external clock for noise-sensitive applications.

Full protection features include precision output over-voltage protection (OVP), output over-current protection (OCP) and thermal shutdown. Other capabilities include programmable soft start, 0,8 V voltage reference with ±1,5% accuracy over temperature, and power-good output voltage monitoring.

The MP2908A is available in TSSOP20-EP and QFN-20 (3 x 4 mm) packages.

For more information contact NuVision Electronics, +27 (0)11 608 0144, [email protected], www.nuvisionelec.co.za



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