Switched-capacitor charge pump targets laptops
Stephen Law
Power Supply / Management charge power pump switched-capacitorMURATA PE25203 selectable divide-by-3 or divide-by-2 switched-capacitor charge pump targets laptop applications to convert a 3S/2S battery input to a 1S output for downstream PMICs. The leading-edge technology enables system architects to push beyond the efficiency boundary with exceptionally high 99 percent peak efficiency. Device operates in a selectable divide-by-3 or divide-by-2 for 3S/2S battery voltage. The switched-capacitor, charge pump-based dc-dc converter supports an output voltage range of 2.75V to 5.0V with load currents of 4A and up to 20W delivered to the external load. With an operating temperature range of -40 to +85℃, device is fully protected with input under voltage, overcurrent protection, and thermal shutdown fault detection.
