FAN4822IMX

FAN4822IMX Datasheet

FAN4822

Part	Datasheet
FAN4822IMX	FAN4822IMX (pdf)

Related Parts	Information
FAN4822IM	FAN4822IM
FAN4822IN	FAN4822IN

PDF Datasheet Preview
FAN4822 ZVS Average Current PFC Controller • Average current sensing, continuous boost, leading edge PFC for low total harmonic distortion and near unity power factor • Built-in ZVS switch control with fast response for high at high power levels • Average line voltage compensation with brownout control • Current fed gain modulator improves noise immunity and provides universal input operation • Overvoltage comparator eliminates output “runaway” due to load removal • UVLO, current limit, and soft-start • Precision reference The FAN4822 is a PFC controller designed for high power applications. The controller contains all of the functions necessary to implement an average current boost PFC converter, along with a Zero Voltage Switch ZVS controller to reduce diode recovery and MOSFET turn-on losses. The average current boost PFC circuit provides high power factor >98% and low Total Harmonic Distortion THD . Built-in safety features include undervoltage lockout, overvoltage protection, peak current limiting, and input voltage brownout protection. Block Diagram FB 14 1 VEAO VEA 8 GND 2.5V + IAC 4 VRMS 5 ISENSE 3 GAIN MODULATOR IEA + 2 IEAO RTCT 6 REF 13 VCCZ REF ZV SENSE FB 2.7V OVP + I LIMIT + VCCZ 13.5V VCC 12 SQ RQ SQ RQ PFC OUT 11 ZVS OUT 10 PWR GND 9 FAN4822 FAN4822 14-Pin DIP P14 VEAO IEAO ISENSE IAC VRMS RTCT ZV SENSE TOP VIEW Ordering Information Part Number FAN4822IN FAN4822IM PFC/PWM Frequency -40°C to 85°C -40°C to 85°C PRODUCT SPECIFICATION Package 14-Pin PDIP P14 16-Pin Wide SOIC S16W DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS. LIFE SUPPORT POLICY FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein: Life support devices or systems are devices or systems which, a are intended for surgical implant into the body, or b support or sustain life, and c whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user. A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. 8/10/01 0.0m 003 Stock#DS30004803 Fairchild Semiconductor Corporation

PDF Datasheet Preview

FAN4822

ZVS Average Current PFC Controller
• Average current sensing, continuous boost, leading edge PFC for low total harmonic distortion and near unity power factor
• Built-in ZVS switch control with fast response for high at high power levels
• Average line voltage compensation with brownout control
• Current fed gain modulator improves noise immunity and
provides universal input operation
• Overvoltage comparator eliminates output “runaway” due
to load removal
• UVLO, current limit, and soft-start
• Precision reference

The FAN4822 is a PFC controller designed for high power applications. The controller contains all of the functions necessary to implement an average current boost PFC converter, along with a Zero Voltage Switch ZVS controller to reduce diode recovery and MOSFET turn-on losses.

The average current boost PFC circuit provides high power factor >98% and low Total Harmonic Distortion THD . Built-in safety features include undervoltage lockout, overvoltage protection, peak current limiting, and input voltage brownout protection.

Block Diagram

FB 14
1 VEAO VEA
8 GND
2.5V +

IAC 4

VRMS 5

ISENSE 3

GAIN MODULATOR

IEA +
2 IEAO

RTCT 6

REF 13

VCCZ REF

ZV SENSE

FB 2.7V

OVP +

I LIMIT +

VCCZ 13.5V

VCC 12

SQ RQ

SQ RQ

PFC OUT 11

ZVS OUT 10

PWR GND 9

FAN4822

FAN4822 14-Pin DIP P14

VEAO

IEAO

ISENSE IAC

VRMS RTCT ZV SENSE

TOP VIEW
Ordering Information

Part Number FAN4822IN FAN4822IM

PFC/PWM Frequency
-40°C to 85°C -40°C to 85°C

PRODUCT SPECIFICATION

Package 14-Pin PDIP P14 16-Pin Wide SOIC S16W

DISCLAIMER

FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY, FUNCTION OR DESIGN. FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS, NOR THE RIGHTS OF OTHERS.

LIFE SUPPORT POLICY

FAIRCHILD’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT OF FAIRCHILD SEMICONDUCTOR CORPORATION. As used herein:

Life support devices or systems are devices or systems which, a are intended for surgical implant into the body, or b support or sustain life, and c whose failure to perform when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in a significant injury of the user.

A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.
8/10/01 0.0m 003 Stock#DS30004803 Fairchild Semiconductor Corporation

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Datasheet ID: FAN4822IMX 513898