ML4824CP2

Overview

The ML4824CP2 is a Power Factor Correction and PWM Controller Combo manufactured by Fairchild Semiconductor. It integrates internally synchronized PFC and PWM functions in a single IC to reduce total harmonic distortion and storage capacitor ripple current. The device supports average current, continuous boost leading edge PFC with a fast transconductance error amp for the voltage loop. The high efficiency trailing edge PWM can be configured for current mode or voltage mode operation. It operates at a switching frequency of 81 kHz within an operating temperature range of 0°C to +150°C. The component is housed in a DIP-16 package.

Feature Summary

• Integrates internally synchronized PFC and PWM functions in one IC
• Supports average current, continuous boost leading edge PFC
• Features a fast transconductance error amp for the voltage loop
• Configurable trailing edge PWM for current mode or voltage mode operation

Applications

• Power factor corrected switched mode power supplies
• Applications requiring compliance with IEC1000-3-2 specifications
• Systems needing reduced ripple current in storage capacitors between PFC and PWM sections

Procurement Notes

Verify the specific suffix 'Q' against official documentation to confirm if it denotes automotive qualification or specific manufacturing lot variations distinct from the standard ML4824CP2. Ensure the source document explicitly defines this suffix's impact on electrical parameters or reliability standards before procurement. Cross-reference the manufacturer's latest datasheet to confirm availability status and any potential obsolescence notices associated with this exact part number variant.

Selection Notes

Select the ML4824CP2 when a combined PFC and PWM solution is required to minimize component count and board space. It is suitable for designs utilizing average current mode control for the PFC stage and flexible PWM configuration for the post-regulator. Consider the DIP-16 through-hole package constraint and the 81 kHz switching frequency when designing magnetic components and thermal management systems for the target application environment.

Part Context

The ML4824 series represents a class of controllers designed for power factor correction applications. The CP2 variant specifically refers to the DIP-16 package version. This family aims to simplify the design of AC-DC converters by combining critical control loops into a single BiCMOS integrated circuit, reducing external component requirements compared to discrete solutions.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.