Datasheet XDPL8218 (Infineon) - 5

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XDPL8218 Digital Flyback Controller IC XDP™ Digital Power Pin configuration 1 Pin configuration
Pin assignments and basic pin description information are shown below. ZCD 1 8 GND FB 2 7 VCC CS 3 6 UART GD 4 5 HV PG-DSO-8 (150mil)
Figure 2 Pinning of XDPL8218 Table 1 Pin definitions and functions Name Pin Type Function
ZCD 1 I Zero-crossing detection: The ZCD pin is connected to the transformer auxiliary winding via external resistors divider. It is used for zero-crossing detection, primary-side output voltage sensing and input voltage sensing FB 2 I Secondary Side Feedback: The FB pin is used as a feedback pin for
SSR
. 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 (UART)
configuration: The UART pin is used as the digital interface for IC parameter configuration. VCC 7 I Operating voltage supply and sensing GND 8 -
Integrated Circuit (IC)
grounding Datasheet 5 Revision 1.0 2018-06-06 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 3.2 Configurable gate voltage rising slope at GD pin 3.3 Startup 3.4 Line synchronization 3.5 Input voltage and output voltage estimation 3.5.1 Output voltage estimation 3.5.2 Input voltage estimation 3.6 Power factor correction 3.7 Protection features 3.7.1 Primary MOSFET overcurrent protection 3.7.2 Output undervoltage protection 3.7.3 Output overvoltage protection 3.7.4 Transformer demagnetization time shortage protection 3.7.5 Minimum input voltage startup check and input undervoltage protection 3.7.6 Maximum input voltage startup check and input overvoltage protection 3.7.7 VCC undervoltage lockout 3.7.8 VCC undervoltage protection 3.7.9 VCC overvoltage protection 3.7.10 IC overtemperature protection 3.7.11 Other protections 3.7.12 Protection reactions 3.8 Debug mode 4 List of Parameters 5 Electrical Characteristics and Parameters 5.1 Package Characteristics 5.2 Absolute Maximum Ratings 5.3 Operating Conditions 5.4 DC Electrical Characteristics 6 Package Dimensions 7 References Revision History Glossary ABM CCM CRC CV DCM ECG EMI GUI IC LED OCP1 PC PF PFC QRM1 SSR THD UART USB UVLO Disclaimer