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FAN602F — Offline Quasi-Resonant PWM Controller
June 2016
FAN602F
Offline Quasi-Resonant PWM Controller
Features
High Efficiency Across Wide Input and Output
Conditions in a Small Form Factor
Quasi-Resonant Switching Operation with Two
Step Maximum Blanking Frequency (140 kHz and
75 kHz)
User Configurable Burst Mode Entry and Exit to
Maximize Light-Load Efficiency and Minimize
Audible Noise
Adaptive Burst Mode Entry Level for Adaptive
Charger Application
mWSaver® Technology for Ultra Low Standby
Power Consumption (<20 mW)
Forced and Inherent Frequency Modulation of
Valley Switching for Low EMI Emissions and
Common Mode Noise
Built-In and User Configurable Over-Voltage
Protection (OVP), Under-Voltage Protection (UVP)
and Over-Temperature Protection (OTP)
Fully Programmable Brown-In and Brownout
Protection
Precise Constant Output Current Regulation with
Programmable Line Compensation
Built-In High-Voltage Startup to Reduce External
Components
10 Lead SOIC JEDEC
Description
The FAN602F is an advanced PWM controller aimed at
achieving power density of ≥10W/in
3
in universal input
range AC/DC flyback isolated power supplies. It
incorporates Quasi-Resonant (QR) control with
proprietary Valley Switching with a limited frequency
variation. QR switching provides high efficiency by
reducing switching losses while Valley Switching with a
limited frequency variation bounds the frequency band
to overcome the inherent limitation of QR switching.
FAN602F features mWSaver® burst mode operation
with extremely low operating current (300 μA) and
significantly reduces standby power consumption to
meet the most stringent efficiency regulations such as
Energy Star’s 5-Star Level and CoC Tier II
specifications.
FAN602F includes several user configurable features
aimed at optimizing efficiency, EMI and protections.
FAN602F has a programmable switching frequency
range that provides flexibility in choosing noise rejection
in targeted frequency zones. It incorporates user-
configurable minimum peak current, which allows
controlling the burst mode entry/exit power level,
thereby enhancing light-load efficiency and eliminating
audible noise. It also includes several rich
programmable protection features such as Over-Voltage
1. 内容简介 在2015年，苹果新一代的MacBook和Apple Watch皆搭载压力触控感应技术，它被Apple称为Force Touch，用户每次按下触控板之后除了可以在萤幕看见视觉回馈，它同时能够分辨出用户点按的力度强弱来做出一系列的相关操控与应用。而本文将介绍以HY16F184内建高精密Sigma-delta 24 Bit ADC搭配Uneo Force Sensor来实现一...[详细]
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