Infineon Technologies XDPL8219XUMA1

Overview

XDPL8219XUMA1 from Infineon is a digital flyback controller IC with integrated PFC, secondary-side regulated constant voltage (SSR-CV) output, 600 V HV startup cell, and UART-based configuration/reporting. It operates in Quasi-Resonant Mode (QRMn) for high efficiency and low EMI, supports universal AC (90–305 V_rms) and DC (127–431 V) inputs, and achieves PF > 0.9 and THD < 10% across wide load range - used in front-stage PFC converters for LED luminaires.

For engineers reviewing the XDPL8219XUMA1 datasheet, XDPL8219XUMA1 pinout, XDPL8219XUMA1 application, or XDPL8219XUMA1 equivalent, key selection criteria include SSR-CV regulation accuracy, QRMn valley-number adaptability, ABM-enabled <100 mW no-load standby power, UART-configurable protection thresholds, and UL1310-compliant adaptive CS pin voltage limits.

Technical Context

The XDPL8219XUMA1 implements a digitally controlled multimode flyback controller with real-time input voltage estimation (AC/DC detection), line-synchronized QRMn operation, and dynamic switching parameter updates per cycle - including ton, Nvalley, tsw,min, and nABM - based on filtered FB voltage mapping. Its digital notch filter suppresses 100/120 Hz ripple (AC) or dither-induced sine components (DC) to stabilize regulation.

It integrates a 600 V HV startup cell with adaptive VCC charging, UART-based unidirectional telemetry (input voltage, line frequency, IC temperature, error codes), and UL1310 safety logic that dynamically constrains CS pin max voltage and minimum valley number based on estimated input voltage to limit output power at high-line conditions.

Key Specifications

Pinout & Package

XDPL8219XUMA1 is housed in a PG-DSO-8 (150 mil) package with exposed thermal pad, optimized for high-voltage flyback primary-side integration and thermal reliability in enclosed LED driver modules.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar digital flyback controller applications.

Compared with UCC28780 and ICE5QSAG, XDPL8219XUMA1 uniquely combines SSR-CV regulation, AC/DC input auto-detection, UART-based field configuration, and UL1310 adaptive safety - enabling single-chip, future-proof designs for smart, globally compliant LED drivers.

Availability

XDPL8219XUMA1 is available at Aetrix Electronics and suitable for LED luminaires with PFC, industrial DC-powered lighting, smart lighting control interfaces, and UL1310-certified Class 2 power supplies requiring stable component supply and long-term lifecycle support.

Supply support for XDPL8219XUMA1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Infineon Technologies is a German semiconductor manufacturer specializing in power management, automotive, and industrial control ICs, with leadership in CoolMOS™ and digital power platforms.

XDPL8219XUMA1 belongs to Infineon's XDP™ Digital Power family - designed specifically for high-performance, digitally configurable AC/DC and DC/DC converters targeting LED lighting, industrial power supplies, and smart infrastructure applications.

FAQ

What is the role of the UART pin on XDPL8219XUMA1?

The UART pin provides unidirectional communication for both configuration and telemetry. It accepts UART commands to set parameters like OVP threshold, ABM burst frequency, and protection reaction modes. During operation, it reports real-time data including estimated input voltage, line frequency, IC temperature, input voltage loss status, and the error code of the last triggered protection event - all without requiring a full-duplex interface or external transceiver.

How does XDPL8219XUMA1 achieve PF > 0.9 and THD < 10%?

XDPL8219XUMA1 uses a digitally implemented PFC algorithm that adapts its pulse modulation in real time based on input voltage estimation and zero-crossing detection (ZCD). For AC input, it synchronizes switching to line cycles and shapes current draw using QRMn with variable valley count, achieving >0.9 PF and <10% THD across 90–277 V_rms. The digital notch filter further stabilizes feedback under harmonic distortion, ensuring consistent regulation.

Does XDPL8219XUMA1 support constant DC input operation?

Yes - XDPL8219XUMA1 automatically detects constant DC input via HV pin analysis and switches to a dedicated modulation mode featuring switching frequency dithering (60–120 kHz spread spectrum) to reduce EMI peaks. It maintains SSR-CV regulation without line synchronization, and disables AC-specific functions like notch filtering and double-line-frequency suppression - enabling robust operation from 127–431 V DC sources such as solar arrays or industrial DC buses.

What safety certifications does XDPL8219XUMA1 support?

XDPL8219XUMA1 incorporates UL1310-compliant adaptive safety logic: it dynamically limits CS pin maximum voltage and enforces minimum QRMn valley count based on real-time input voltage estimation, preventing excessive output power at high-line conditions. It is qualified for industrial applications per JEDEC JESD22-A108, and its architecture supports end-equipment certification to UL1310, IEC 62368-1, and IEC 61000-3-2 Class C - verified through Infineon's internal stress testing and reference design validation.