Details, datasheet, quote on part number: ICE5QR4770AZ ICE5QR4780AZ
PartICE5QR4770AZ ICE5QR4780AZ
Category
TitleICE5QR2270AZ ICE5QR2280AZ
Description
CompanyInfineon Technologies Corporation
DatasheetDownload ICE5QR4770AZ ICE5QR4780AZ datasheet
  
ICE5QR4770AZ ICE5QR4780AZ photo

 

Features, Applications

Integrated V/800 V avalanche rugged CoolMOSTM Novel Quasi-Resonant operation and proprietary implementation for low EMI Enhanced Active Burst Mode with selectable entry and exit standby power Active Burst Mode to reach the lowest standby power <100 mW Fast startup achieved with cascode configuration Digital frequency reduction for better overall system efficiency Robust line protection with input OVP and brownout Comprehensive protection Pb-free lead plating, halogen free mold compound, RoHS compliant PG-DIP-7 PG-DSO-12

Features

Integrated V/800 V avalanche rugged CoolMOSTM Minimum switching frequency difference between low & high

Applications
Auxiliary power supply for Home Appliances/white Goods, TV,
Enhanced Active Burst Mode with selectable entry and exit

Active Burst Mode to reach the lowest standby power <100 mW Fast startup achieved with cascode configuration Digital frequency reduction to 10 zero crossings Built-in digital soft start Cycle-by-cycle peak current limitation Maximum on/off time limitation to avoid audible noise during start up and power down

Description

The Quasi-Resonant CoolSETTM- (ICE5QRxxxxAx) is the 5th generation of Quasi-Resonant integrated power IC optimized for off-line switch power supply in cascode configuration. It is housed in single package with 2 separate chips; one is controller chip and other is HV MOSFET chips. The IC can achieve lower EMI and higher efficiency with improved digital frequency reduction through the proprietary novel Quasi-Resonant operation. The enhanced Active Burst Mode enables flexibility in standby power range selection. The product has a wide operation range of IC power supply and lower power consumption. The numerous protection functions including the robust line protection (both input OVP and brownout) to support the protections of the power supply system in failure situations. All of these make the CoolSETTM (ICE5QRxxxxAx) series an outstanding integrated power device in Quasi-Resonant flyback converter in the market.

Robust line protection with input OVP and brownout Auto restart mode protection for VCC Over Voltage, VCC Under

Voltage, Over load/Open Loop, Output Over Voltage, Over Temperature and CS (Current Sense) short to GND

Limited charging current for VCC short to GND Pb-free lead plating, halogen free mold compound, RoHS

Please read the Important Notice and Warnings at the end of this document page 2.1 2017-08-11

Typ. TJ =25C (inclusive of low side MOSFET) Calculated maximum output power rating in an open frame design Ta=50C, TJ=125C (integrated high voltage MOSFET) and using minimum drain pin copper area 2 oz copper single sided PCB. The output power figure is for selection purpose only. The actual power can vary depending on particular designs. Please contact to a technical expert from Infineon for more information. Datasheet 2.1 2017-08-11

Product Highlights.......................................................................................................................... 1 Features........................................................................................................................................ 1 Applications................................................................................................................................... 1 Description.................................................................................................................................... 1 Output Power of 5th generation Quasi-Resonant CoolSETTM................................................................ 2 Table of Contents........................................................................................................................... 1 2 Pin Configuration and Functionality......................................................................................... 5 Representative Block Diagram................................................................................................. 6

3 Functional Description............................................................................................................ 7 3.1 VCC Pre-Charging and Typical VCC Voltage during Start-up..................................................................... 7 3.2 Soft-start.................................................................................................................................................. 7 3.3 Normal Operation................................................................................................................................... 8 3.3.1 Digital Frequency Reduction............................................................................................................. 8 3.3.1.1 Minimum ZC Count Determination.............................................................................................. 8 3.3.1.2 Up/down counter.......................................................................................................................... 8 3.3.1.3 Zero crossing (ZC counter)........................................................................................................... 9 3.3.2 Ringing suppression time................................................................................................................ 10 3.3.2.1 Switch on determination............................................................................................................ 10 3.3.3 Switch off determination................................................................................................................. 10 3.3.4 Modulated gate drive....................................................................................................................... 11 3.4 Current limitation.................................................................................................................................. 11 3.5 Active Burst Mode with selectable power level.................................................................................... 11 3.5.1 Entering Active Burst Mode Operation............................................................................................ 12 3.5.2 During Active Burst Mode Operation............................................................................................... 12 3.5.3 Leaving Active Burst Mode Operation............................................................................................. 13 3.6 Protection Functions............................................................................................................................. 14 3.6.1 Line Over Voltage............................................................................................................................. 14 3.6.2 Brownout.......................................................................................................................................... 14 3.6.3 VCC Ovder Voltage or Under Voltage................................................................................................. 14 3.6.4 Over Load......................................................................................................................................... 14 3.6.5 Output Over Voltage........................................................................................................................ 15 3.6.6 Over Temperature............................................................................................................................ 3.6.7 CS Short to GND............................................................................................................................... 15 4 Electrical Characteristics....................................................................................................... 17 4.1 Absolute Maximum Ratings.................................................................................................................. 17 4.2 Operating Range.................................................................................................................................... 19 4.3 Operating Conditions............................................................................................................................ 19 4.4 Internal Voltage Reference.................................................................................................................... 20 4.5 PWM Section.......................................................................................................................................... 20 4.6 Current Sense........................................................................................................................................ 20 4.7 Soft Start................................................................................................................................................ 21 4.8 Digital Zero Crossing............................................................................................................................. 21 4.9 Active Burst Mode.................................................................................................................................. 22 4.10 Line Over Voltage Protection................................................................................................................ 22 4.11 Brownout Protection............................................................................................................................. 22 4.12 VCC Over Voltage Protection.................................................................................................................. 23


 

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