FAN7710N

FAN7710N Datasheet

FAN7710 Ballast Control IC for Compact Fluorescent Lamps

Part	Datasheet
FAN7710N	FAN7710N (pdf)

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FAN7710 Ballast Control IC for Compact Fluorescent Lamps June 2007 FAN7710 Ballast Control IC for Compact Fluorescent Lamps - Integrated Half-Bridge MOSFET - Floating Channel for Bootstrap Operation up to +550V - Low Start-up and Operating Current 120uA, 2.6mA - Under-Voltage Lockout with 1.8V of Hysteresis - Adjustable Run Frequency and Preheat Time - Internal Active ZVS Control - Internal Protection Function No Lamp - Internal Clamping Zener Diode - High Accuracy Oscillator - Soft-Start Functionality - Compact Fluorescent Lamp Ballast The FAN7710, developed using Fairchild’s unique highvoltage process and system-in-package SiP concept, is a ballast control integrated circuit IC for a compact fluorescent lamp CFL . The FAN7710 controls internal high-voltage stress and delivers 20W to the lamp at 310VDC voltage. FAN7710 incorporates a preheating / ignition function, controlled by an user-selected external capacitor, to increase lamp life. The FAN7710 detects switch operation from after ignition-mode through an internal active Zero-Voltage Switching ZVS control circuit. This control scheme enables the FAN7710 to detect an open-lamp condition, without the expense of external circuitry, and prevents stress on MOSFETs. The high-side driver built into the FAN7710 has a commonmode noise cancellation circuit that provides robust operation against high-dv/dt noise intrusion. 8-DIP Ordering Information Part Number FAN7710N Package 8-DIP Pb-Free Operating Temperature Range Packing Method -25°C ~ 125°C Tube FAN7710 Ballast Control IC for Compact Fluorescent Lamps Typical Application Diagrams * Refer to the BOM and design guide provided on page16. Figure Typical Application Circuit for Compact Fluorescent Lamp Internal Block Diagram RT 2 CPH 3 VDD 1 10V REG 15V SHUNT REGULATOR VDD Sense Reference PRE-HEAT CPH Control CPH<3V Yes 2µA 12µA No IPH* IRT IPH =0.6IRT BIAS & SYSTEM LATCH 3V 5V BGR UVLO BIAS TSD UVLO RQ SQ SYSHALT IPH OSCILLATOR DEAD TIME Control VDDH/VDD LSH VDDH/VDD LSH SDH SDL 5V/3V SDH R Q RESET ADAPTIVE ZVS ENABLE LOGIC SYSHALT ADAPTIVE ZVS CONTROLLER SHORT-PULSE GENERATOR HIGH-SIDE DRIVER VB UVLO Noise Canceller

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FAN7710 Ballast Control IC for Compact Fluorescent Lamps

June 2007

FAN7710 Ballast Control IC for Compact Fluorescent Lamps
- Integrated Half-Bridge MOSFET - Floating Channel for Bootstrap Operation up to +550V - Low Start-up and Operating Current 120uA, 2.6mA - Under-Voltage Lockout with 1.8V of Hysteresis - Adjustable Run Frequency and Preheat Time - Internal Active ZVS Control - Internal Protection Function No Lamp - Internal Clamping Zener Diode - High Accuracy Oscillator - Soft-Start Functionality
- Compact Fluorescent Lamp Ballast

The FAN7710, developed using Fairchild’s unique highvoltage process and system-in-package SiP concept, is a ballast control integrated circuit IC for a compact fluorescent lamp CFL . The FAN7710 controls internal high-voltage stress and delivers 20W to the lamp at 310VDC voltage. FAN7710 incorporates a preheating / ignition function, controlled by an user-selected external capacitor, to increase lamp life. The FAN7710 detects switch operation from after ignition-mode through an internal active Zero-Voltage Switching ZVS control circuit. This control scheme enables the FAN7710 to detect an open-lamp condition, without the expense of external circuitry, and prevents stress on MOSFETs. The high-side driver built into the FAN7710 has a commonmode noise cancellation circuit that provides robust operation against high-dv/dt noise intrusion.
8-DIP
Ordering Information

Part Number FAN7710N

Package 8-DIP

Pb-Free Operating Temperature Range Packing Method
-25°C ~ 125°C

Tube

FAN7710 Ballast Control IC for Compact Fluorescent Lamps

Typical Application Diagrams
* Refer to the BOM and design guide provided on page16. Figure Typical Application Circuit for Compact Fluorescent Lamp

Internal Block Diagram

RT 2 CPH 3

VDD 1
10V REG
15V SHUNT REGULATOR

VDD Sense Reference

PRE-HEAT CPH Control

CPH<3V Yes
2µA 12µA No

IPH* IRT

IPH =0.6*IRT

BIAS & SYSTEM LATCH
3V 5V

BGR UVLO BIAS TSD

UVLO

RQ SQ

SYSHALT

IPH*

OSCILLATOR

DEAD TIME Control

VDDH/VDD LSH

VDDH/VDD LSH

SDH SDL
5V/3V

SDH R Q RESET

ADAPTIVE ZVS ENABLE LOGIC

SYSHALT

ADAPTIVE ZVS CONTROLLER

SHORT-PULSE GENERATOR

HIGH-SIDE DRIVER

VB UVLO

Noise Canceller

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Datasheet ID: FAN7710N 513989