Cirrus-logic CS1501 Manuale Utente

Copyright  Cirrus Logic, Inc. 2012(All Rights Reserved)Cirrus Logic, Inc.http://www.cirrus.comCS1501Digital Power Factor Correction Control ICFeature

CS150110 DS927F45.3 Burst ModeBurst mode is used to improve system efficiency when thesystem output power (Po) is <5% of nominal. Burst mode isimpl

CS1501DS927F4 11Resistor RIFB sets the feedback current and is calculated asfollows:By using digital loop compensation, the voltage feedbacksignal doe

CS150112 DS927F45.8 Brownout ProtectionThe CS1501 brownout detection circuit monitors the peak ofthe Vrect input voltage and disables the PWM switchin

CS1501DS927F4 135.12 Open/Short Loop ProtectionIf the PFC output sense resistor, RIFB, fails (open or short toGND), the measured output voltage decrea

CS150114 DS927F45.15 Summary of EquationsEq. # Equation Variables/Recommended Values1Output Power (page 10)PoRated output power of the system. Effici

CS1501DS927F4 156. PACKAGE DRAWINGMILLIMETERS INCHESDimension MIN NOM MAX MIN NOM MAXA - - - - 1.75 - - - - 0.069A1 0.10 - - 0.25 0.004 - - 0.010b 0.3

CS150116 DS927F47. ORDERING INFORMATION8. ENVIRONMENTAL, MANUFACTURING, & HANDLING INFORMATION9. REVISION HISTORY Part # Temperature Range Package

CS15012 DS927F41. INTRODUCTION Figure 1. CS1501 Block DiagramThe CS1501 digital power factor correction (PFC) control IC isdesigned to deliver the lo

CS1501DS927F4 32. PIN DESCRIPTIONCSPFC Current SenseIFBLink V oltage SenseZCD PFC Zero-current DetectGNDGroundGD P FC Gate D r iv erVDD IC Supply Vo

CS15014 DS927F43. CHARACTERISTICS AND SPECIFICATIONS3.1 Electrical CharacteristicsTypical characteristics conditions: TA=25°C, VDD= 13V, GND = 0VAll v

CS1501DS927F4 5Notes: 1. External circuitry should be designed to ensure the ZCD sink current pulled from the internal clamp diode when it is forward

CS15016 DS927F43.2 Absolute Maximum RatingsCharacteristics conditions:All voltages are measured with respect to GND.Notes: 5. Long-term operation at t

CS1501DS927F4 74. TYPICAL ELECTRICAL PERFORMANCE -3.0%-2.5%-2.0%-1.5%-1.0%-0.5%0.0%0.5%-50 0 50 100 150IrefDriftTemperature (oC)Figure 3. Supply Curr

CS15018 DS927F4 02468101214-60 -40 -20 0 40 100 120 140 Gate Resistor (ROH, ROL) Temp (oC)Zout (Ohm)SourceSinkVDD = 13 VIsource = 100 mAIsink = 200 mA

CS1501DS927F4 95. GENERAL DESCRIPTIONThe CS1501 offers numerous features, options, andfunctional capabilities to the designer of switching powerconver