This application note presents high-efficiency power supply circuits that achieve conversion efficiencies in excess of 90% and support output currents ranging from milliamps to amps.
The document details the design of high-efficiency power supply circuits for portable computers and hand-held equipment, achieving efficiencies up to 95%. It focuses on a series of controllers including the LTC1142, LTC1143, LTC1147, LTC1148, and LTC1149.
| Maximum Efficiency | Up to 95% |
|---|---|
| Output Current Capability | In excess of 10A |
| Low Current Efficiency Threshold | As low as 10mA |
High efficiency is frequently the main goal to minimize power drain on input sources and heat buildup.
Automatic Burst Mode operation is used at low currents to maximize battery life during sleep or standby modes.