Micrel has introduced a true-digital PWM controller for high-current, non-isolated DC-DC power supplies in cloud computing and telecoms applications.
Designed to work with an external industry standard DrMOS as well as Micrel’s proprietary IntelliMOS solution, the MIC21000 can be used for +12V or +5V step-down point-of-load power supplies.
According to Brian Hedayati, vice president of marketing at Micrel, the increasing demand for fault tolerant continuous operation for cloud servers requires power management systems capable of monitoring all the operating power conditions and responding to failures in real time.
“Digitally controlled power management products enable system designers to optimize their designs via software changes reducing design cycle time,” said Hedayati.
The device makes use of non-linear control to improve transient response.
A I2C/PMBUS interface allows for real time monitoring of input voltage, output voltage/current and internal/external temperature.
The MIC21000 can operate from a single bias supply voltage of 5V or 3.3V. The device is available in a 24-pin 4mm x 4mm QFN package with an operating temperature range from 40 ºC to +85 ºC.
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