IDP2303AXUMA1

IDP2303A Digital Multi-Mode PFC + LLC Combo Controller Product Highlights Integrated 600V startup cell Integrated floating driver based on coreless transformer technology Digital multi-mode operation for higher efficiency curve Supports low stand-by power by means of direct X-cap discharge function and adaptive burst mode control Eliminates the auxiliary power supply by means of integrated startup cell and burst mode UART interface for communication and in-circuit configuration Flexible design-in by means of one time programming capability for a wide range of parameters Description The IDP2303A is a multi-mode PFC and LLC controller combined with a floating high side driver and a startup cell. A digital engine provides advanced algorithms for multi-mode operation to support highest efficiency over the whole load range. A comprehensive and configurable protection feature set is implemented. Only a minimum of external components are required with the low pin count DSO-16 package. The integrated HV startup cell and adaptive burst mode enable to achieve low stand-by power and low output ripple. In addition a one-time-programming (OTP) unit is integrated to provide a wide set of configurable parameters that help to ease the design in phase. Features Multi-mode PFC Configurable soft-start Configurable PFC gate driver V input voltage sensing and X cap discharge via HV AC Synchronous PFC and LLC burst mode control pin Configurable non-linear LLC VCO curve Applications Adaptors for TV, notebook and industry from 75W to 300W Generarl SMPS IDP2303A HSGD GD0 HSVCC 85 ... 265 VAC HSGND Gate1 Gate2 GD1 ZCD VCC PGND CS0 VS EN CS1 VD1 VD2 HV VCC Vcc VS GND HBFB MFIO Figure 1 Typical Application Product Type Package IDP2303A PG-DSO-16 IDP2303A Digital Multi-Mode PFC + LLC Combo Controller Table of Contents Table of Contents ..........................................................................................................................................................................2 1 Pin Configuration and Description ....................................................................................................................4 2 Representative Blockdiagram.............................................................................................................................6 3 Functional Description .........................................................................................................................................7 3.1 Introduction .................................................................................................................................................................... 7 3.2 Overview Controller Features ................................................................................................................................. 7 3.3 Overview Controller Features ................................................................................................................................. 7 3.3.1 System and Device overview ............................................................................................................................ 8 3.3.1.1 Processor and memory operations.......................................................................................................... 8 3.3.1.2 Communication interface ......................................................................................................................... 10 3.3.1.3 Voltage and current sensors .................................................................................................................... 10 3.3.2 IC Power Supply and High Voltage Startup Cell .................................................................................... 11 3.3.2.1 Direct AC input monitoring combined with VCC startup function .......................................... 11 3.3.2.2 X-cap discharge function via the integrated HV startup-cell ..................................................... 12 3.3.3 Standby Mode with synchronous PFC-LLC burst operation ............................................................ 13 3.3.4 IC protection ......................................................................................................................................................... 14 3.3.4.1 Undervoltage lockout for VCC ................................................................................................................. 14 3.3.4.2 Overvoltage protection for VCC ............................................................................................................. 14 3.3.4.3 Over temperature protection .................................................................................................................. 14 3.3.4.4 Auto Restart Mode ....................................................................................................................................... 14 3.3.5 AC detection .......................................................................................................................................................... 14 3.4 PFC Controller ............................................................................................................................................................. 15 3.4.1 PFC Softstart ......................................................................................................................................................... 15 3.4.2 PFC Multi-mode operation ............................................................................................................................. 16 3.4.3 PFC Protection ..................................................................................................................................................... 17 3.4.3.1 PFC Open Control Loop Protection (PFCOCLP)............................................................................... 17 3.4.3.2 PFC Inductor Over Current Protection (PFCOCP) .......................................................................... 18 3.4.3.3 PFC Output Over Voltage Protection (PFCOVP) .............................................................................. 18 3.4.3.4 PFC Output Under Voltage Protection (PFCUVP) ........................................................................... 18 3.4.3.5 PFC Brownin Protection for AC Input Line (PFCBIP) ................................................................... 18 3.4.3.6 PFC Brownout Protection for AC Input Line (PFCBOP) ............................................................... 18 3.4.3.7 PFC Long Time Continuous Conduction Mode Protection (PFCCCMP) ................................. 18 3.5 Half-bridge LLC Controller ..................................................................................................................................... 19 3.5.1 LLC Softstart (Time Controlled Oscillator TCO) .................................................................................... 19 3.5.2 LLC Normal Operation (Voltage Controlled Oscillator VCO) ........................................................... 20 3.5.3 LLC Smooth Transition of Frequency Control from TCO to VCO .................................................... 21 3.5.4 LLC Half-bridge Protection ............................................................................................................................. 21 3.5.4.1 LLC Open Control Loop Protection (LLCOCLP) ............................................................................... 21 3.5.4.2 LLC Over Load Protection (LLCOLP) ................................................................................................... 22 3.5.4.3 LLC Over Current Protection Level 1 (LLCOCP1) ........................................................................... 22 3.5.4.4 LLC Over Current Protection Level 2 (LLCOCP2) ........................................................................... 23 3.6 Operation Flow ........................................................................................................................................................... 23 3.6.1 IC Initialization .................................................................................................................................................... 23 3.6.2 Operation Flow of the PFC Controller ........................................................................................................ 25 3.6.3 Operation Flow of the Halfbridge LLC Controller ................................................................................. 25 3.7 Overview Protection Features .............................................................................................................................. 26 3.7.1 Undervoltage Lockout for VCC ...................................................................................................................... 27 3.7.2 Overvoltage Protection for VCC .................................................................................................................... 27 3.7.3 Overtemperature Protection by means of internal Temperature Detection ............................. 27 Datasheet 2 Rev. V2.0, 2017-03-23