SWITCHING REGULATOR CONTROL IC

The µPC1909 is a switching regulator control IC ideal for primary side control of active-clamp typeNote DC/DC converters. This IC has 2 outputs employing a totem-pole circuit with peak output current 1.2 A, and is capable of directly driving a power MOS-FET. As a result, it has been possible to realize primary side control of an active-clamp type converter on a single chip.

FEATURES

• 2 on-chip outputs; for Q and Q

• Capable of directly driving a power MOS-FET

• Drive supply voltage range: 7 V to 24 V

• On-chip remote control circuit

• On-chip pulse-by-pulse overcurrent protection circuit

• On-chip overvoltage latch circuit