Power Factor Controller IC SG3561AM

Description

The SG3561AM is an integrated power factor controller (PFC) designed to regulate and improve power factor in AC power systems. It integrates the control circuitry necessary to drive boost converters or similar PFC topologies, improving efficiency and reducing reactive power in AC mains applications. The part is offered in an 8-pin dual in-line package (DIP-8) for through-hole mounting.

FEATURES

Mounting: Through-Hole
Typical Use: Active power factor correction in AC mains supplies
Active Power Factor Control: Provides active correction of the AC input current waveform to improve system power factor toward unity.
Integrated PFC Control Logic: Combines the necessary control circuitry in one IC for driving PFC boost converters and managing power factor loops.
Internal Startup and Bias Functions: Likely contains internal startup biasing to initiate PFC operation without external circuits.
Feedback Management: Designed to use voltage and current feedback signals for dynamic control of the PFC stage.
Error Amplifier & Multiplier: Includes circuitry to compare sensed signals and generate the correct control waveform for power factor correction.
Totem-Pole Drive Output (typical for PFC ICs): Provides a totem-pole output for directly driving a switching transistor or MOSFET.
Overvoltage/Protection Support: Common in PFC controllers to integrate protective behaviors against overload and runaway conditions.
Low Operating Current: Typical of power factor controller ICs to minimize losses and reduce additional power draw.

SPECIFICATION