Infineon Technologies XDPL8219 XDP™ Digital Flyback Controller

Infineon Technologies XDPL8219 XDP™ Digital Flyback Controller features enhanced Power Factor Correction (PFC) and secondary-side regulated constant voltage output. The XDPL8219 operates in Quasi-Resonant Mode (QRM) to maximize efficiency and minimize electromagnetic interference (EMI) over a wide load range. The XDPL8219 Flyback Controller enters Active Burst Mode (ABM) at light load to prevent audible noise from being heard while achieving no-load standby power as low as <100mW.

The XDPL8219 detects the input voltage type (AC or constant DC) and adjusts its proprietary voltage-mode pulse modulator accordingly to enhance performance. For AC input, it adjusts the pulse modulation to achieve a high power factor (PFC >0.9) as well as low total harmonic distortion (THD <10%). It adapts the pulse modulation for a constant DC input, thereby adjusting the switching frequency to reduce EMI over the entire operating range.

The device provides maximum design flexibility and performance optimization through parameter configuration via the Universal Asynchronous Receiver Transmitter (UART) pin. The XDPL8219 transmits signals to report parameters such as input voltage, line frequency, controller temperature, last error code, and input voltage loss indication. The programming tools provided by Infineon include a user-friendly PC Graphic User Interface (GUI) for configuring the parameters of XDPL8219.

The XDPL8219 is housed in a DSO-8 package with a built-in 600V HV start-up cell and a proprietary start-up sequence, ensuring a fast output voltage rise with minimal overshoot.

Features

Flyback controller with Power Factor Correction (PFC)
Secondary Side Regulated (SSR) Constant Voltage (CV) output
Integrated 600V high voltage startup cell
Supports universal AC input (90V_rms to 305V_rms) and DC input (127V to 431V)
Enhanced Total Harmonic Distortion (THD) correction
Enhanced Power Factor (PF) correction
PF >0.9 and THD <10% across a wide load range for AC input up to 277V_rms
High efficiency and low Electro-Magnetic Interference (EMI), with Quasi-Resonant Mode, switching in valley n (QRMn)
No-load standby power as low as <100mW and low audible noise, with Active Burst Mode (ABM)
Low EMI with switching frequency dithering for constant DC input

Reporting of the input voltage, line frequency, controller temperature, input voltage loss, and error code of last triggered protection via uni-directional UART communication
Protection features: input over-voltage, input under-voltage, output over-voltage, output short, VCC over-voltage, VCC under-voltage, and Integrated Circuit (IC) over-temperature protections
UL1310 safety feature: Adaptive CS pin maximum voltage and QRMn minimum valley number limits based on the estimated input voltage to prevent excessive output power at a higher input voltage
Digitally configurable parameters
- Maximum switching frequency
- ABM burst frequency
- Protection threshold and reaction (auto-restart/latch)
PG-DSO-8 package