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CS1501

Cirrus Logic
Part Number CS1501
Manufacturer Cirrus Logic
Description Digital Power Factor Correction Controller
Published Apr 28, 2021
Detailed Description CS1501 Digital Power Factor Correction Control IC Features  Digital EMI Noise Shaping  Adaptive Digital Energy Contr...
Datasheet PDF File CS1501 PDF File

CS1501
CS1501

Overview
CS1501 Digital Power Factor Correction Control IC Features  Digital EMI Noise Shaping  Adaptive Digital Energy Controller • Excellent Efficiency Under All Load and Line Conditions • Zero-voltage Switching Topology  Minimal External Devices Required  Adaptive Digital Control Loop  Comprehensive Safety Features • Undervoltage Lockout (UVLO) • Output Overvoltage Protection • Cycle-by-cycle Current Limiting • Open/Short Loop Protection for IAC & IFB Pins • Thermal Shutdown  Pin Placement Similar to Traditional Boundary Mode (CRM) Controllers Overview The CS1501 is a high-performance digital power factor correction (PFC) controller designed for switching mode power supply (SMPS) applications.
The CS1501 actively manages the power factor correction while achieving high efficiency over a wide load range.
The CS1501 adaptively controls the input AC current so that it is in phase with the AC mains voltage, and its waveform mimics the input voltage waveform.
The PFC controller executes adaptive digital algorithms designed to shape the AC mains input current waveform to be in phase with the input voltage waveform.
The CS1501 is equipped with a zero-current detection (ZCD) circuit providing the PFC digital controller the capability to turn on the MOSFET when the voltage across the drain and source is near zero.
Additionally, a current-sensing circuit is incorporated for instantaneous overcurrent protection.
Applications  LCD and LED TVs  Notebooks  Server/Telecom Ordering Information See page 16.
BR1 AC Mains BR 1 Vr e c t LB BR1 R1 VDD R5 R2 C1 R6 R3 8 1 5 ZCD VDD IFB GD 7 CS1501 3 IAC CS 4 BR 1 STBY GND R4 2 6 D1 Vlink Q1 C2 Regulated DC Output R7 Cirrus Logic, Inc.
http://www.
cirrus.
com Copyright  Cirrus Logic, Inc.
2012 (All Rights Reserved) FEB’12 DS927F4 CS1501 1.
INTRODUCTION VDD STBY 2 600k VDD IFB 1 15k 24k VDD IAC 3 15k 24k Iref ADC Iref ADC tLEB CS 600 4 VCS (th) + VCS (clamp ) + - CS Threshold CS Clamp V...


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