DESCRIPTION

· The DPA-Switch™ IC family is a highly integrated solution for DC-DC conversion applications with 16-75 VDC input.

· It integrates a power MOSFET, PWM control, fault protection, and other control circuitry onto a single CMOS chip.

· High performance features are enabled with three user configurable pins, including hysteretic thermal shutdown.

· All critical parameters (current limit, frequency, PWM gain) have tight temperature and absolute tolerance to simplify design and reduce system cost.

FEATURES

· Highly integrated solution eliminates up to 50 external components, saving space and cost.

· Integrates 220 V high frequency MOSFET and PWM control.

· Lower cost plastic DIP surface mount (G package) and through-hole (P package) options for designs ≤35 W.

· Thermally efficient TO-263-7C (R package) option for high power applications.

· Built-in auto-restart for output overload/open loop protection.

· Pin selectable 300/400 kHz fixed frequency.

· Wide input voltage range: 16-75 VDC.

· Externally programmable current limit and source connected tab reduces EMI.

· Line undervoltage (UV) detection and overvoltage (OV) shutdown protection.

· Fully integrated soft-start for minimum stress/overshoot.

· Supports forward or flyback topology and cycle skipping for regulation to zero load without pre-load.

· RoHS compliant P and G package options.

APPLICATIONS

· PoE applications, VoIP phones, WLAN, security cameras.

· Telco central office equipment: xDSL, ISDN, PABX.

· Distributed power architectures (24 V/48 V bus).

· Industrial controls.