FAN6862HR

6Pin Green-Mode PWM Controller for Flyback Converter, 100KHz

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Overview

A highly integrated PWM controller, FAN6862H(HR) provides several features to enhance the performance of flyback converters. To minimize standby power consumption, a proprietary Green-Mode function provides off-time modulation to continuously decrease the switching frequency under light-load conditions. Under zero-load conditions, the power supply enters Burst Mode, which completely shuts off PWM output. Output restarts just before the supply voltage drops below the UVLO lower limit. This Green-Mode function enables power supplies to meet international power conservation requirements.
The FAN6862H(HR) is designed for SMPS and integrates frequency-hopping function internally, which helps reduce EMI emission of a power supply with minimum line filters. The built-in synchronized slope compensation is proprietary saw-tooth compensation for constant output power limit over universal AC input range. The gate output is clamped at 18V to protect the external MOSFET from over-voltage damage.
Other protection functions include V_DD Over-Voltage Protection (OVP) and Over-Temperature Protection (OTP). For over-temperature protection, an external NTC thermistor can be applied to sense the ambient temperature. When V_DD OVP or OTP is activated, an internal latch circuit latches off the controller.

Applications

Notebook PC
Wireless LAN Access Point/Router
External AC-DC Merchant Power Supply - Wireless Communications
DVD
STB

Features

Low Startup Current: 8µA
Low Operating Current in Green Mode: 2mA
Peak-Current Mode Operation with Cycle-by-Cycle Current Limiting
PWM Frequency Continuously Decreasing with Burst Mode at Light Loads
V_DD Over-Voltage Protection (OVP)
Constant Output Power Limit (Full AC Input Range)
Internal Latch Circuit (FAN6862H) for OVP, OTP
Fixed PWM Frequency (100KHz) with Frequency Hopping
Feedback Open-Loop Protection with 56ms Delay
Soft Startup Time: 5ms

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FAN6862HRTY

Obsolete

TSOT-23-6

419AG

260

REEL

3000

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Controllers | FAN6862HR

6Pin Green-Mode PWM Controller for Flyback Converter, 100KHz

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