link to page 48 link to page 48 link to page 49 link to page 48 XDPL8210 Digital Flyback Controller ICXDP™ Digital PowerPin configuration1Pin configuration Pin assignments and basic pin description information are shown below. ZCD 1 8 GND PWM 2 7 VCC CS 3 6 UART GD 4 5 HV PG-DSO-8 (150mil) Figure 3Pinning of XDPL8210Table 1Pin definitions and functionsNamePinTypeFunction ZCD 1 I Zero-crossing detection: The ZCD pin is connected to the auxiliary winding via external resistors divider. It is used for zero-crossing detection, primary-side output voltage sensing and input voltage sensing. PWM 2 I Pulse Width Modulation (PWM) dimming: The PWM pin is used as a dimming input. The PWM frequency should be fixed in the range from 500 Hz to 2 kHz. CS 3 I Current sensing: The CS pin is used for Flyback MOSFET current sensing via external shunt resistor. GD 4 O Gate driver: The GD pin is used for Flyback MOSFET gate drive control via external series resistor. HV 5 I High voltage: The HV pin is connected to the rectified input voltage via external series resistor. The HV pin is used to charge VCC pin voltage during startup and protection, via an internal 600 V startup cell. In addition, it is also used for line synchronization. UART 6 I/O Universal Asynchronous Receiver Transmitter configuration: The UART pin is used as the digital interface for parameter configuration. VCC 7 I Operating voltage supply and sensing GND 8 - Integrated Circuit (IC) grounding Datasheet 6 Revision 1.0 2019-04-26 Document Outline Features Product validation Potential applications Description Table of contents 1 Pin configuration 2 Functional block diagram 3 Functional description 3.1 Regulated mode 3.1.1 Constant current and limited power set-point 3.1.2 Multimode operation 3.1.3 Control loop initialization 3.2 Configurable gate voltage rising slope at GD pin 3.3 Startup 3.4 Line synchronization 3.5 Input voltage, output voltage and output current estimation 3.5.1 Input voltage estimation 3.5.2 Output voltage estimation 3.5.3 Output current estimation 3.6 Power factor correction 3.7 Dimming control 3.8 Protection features 3.8.1 Primary MOSFET overcurrent protection 3.8.2 Output undervoltage protection 3.8.3 Output overvoltage protection 3.8.4 Transformer demagnetization time shortage protection 3.8.5 Regulated mode peak output overcurrent protection 3.8.6 Minimum input voltage startup check and input undervoltage protection 3.8.7 Maximum input voltage startup check and input overvoltage protection 3.8.8 VCC undervoltage lockout 3.8.9 VCC overvoltage protection 3.8.10 IC overtemperature protection 3.8.11 Other protections 3.8.12 Protection reactions 4 Debug mode 5 List of Parameters 6 Electrical Characteristics and Parameters 6.1 Package Characteristics 6.2 Absolute Maximum Ratings 6.3 Operating conditions 6.4 DC Electrical characteristics 7 Package Dimensions 8 References Revision History Glossary ABM CC CRC DCM ECG EMI FB GUI IC LED LP MCU PC PF PFC PWM QRM1 THD UART USB UVLO Disclaimer