Infineon Technologies IDP2303XUMA1

Overview

IDP2303XUMA1 from Infineon Technologies is a digital multi-mode PFC + LLC combo controller in PG-DSO-16 package, integrating 600V HV startup cell, floating high-side gate driver (HSGD), UART configuration interface (MFIO), and one-time-programmable (OTP) memory. It delivers synchronous burst-mode control for both PFC and LLC stages, supports X-cap discharge via HV pin, and enables <30 mW standby power in 75–300W LCD-TV SMPS.

For engineers reviewing the IDP2303XUMA1 datasheet, IDP2303XUMA1 pinout, IDP2303XUMA1 application, or IDP2303XUMA1 equivalent, key selection criteria include integrated HV startup capability, dual-stage burst mode coordination, configurable non-linear VCO curve for LLC, OTP-based design flexibility, and direct AC sensing via HV and VS pins.

Technical Context

The IDP2303XUMA1 implements a 66 MHz NanoDSP core to execute real-time PFC and half-bridge LLC control algorithms with independent soft-start, multi-mode transition logic, and synchronized burst operation. It features dual current sense inputs (CS0 for PFC, CS1 for LLC), zero-crossing detection (ZCD), and high-voltage input monitoring (HV) for brown-in/brown-out protection.

Its digital architecture enables configurable protection thresholds-including PFCOCLP, PFCOCP, PFCOVP, LLCOCLP, LLCOLP, and dual-level LLCOCP-and supports UART-based in-circuit parameter tuning via MFIO without requiring external programming hardware.

Key Specifications

Pinout & Package

Package: PG-DSO-16 - thermally enhanced 16-pin SOIC with exposed thermal pad, optimized for high-voltage creepage and EMI-sensitive SMPS layouts.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar PFC+LLC combo controller applications.

Compared with UCC28070A+UCC25630x and ICE2PCS01, IDP2303XUMA1 uniquely combines digital multi-mode PFC+LLC control, integrated 600V HV startup, and field-programmable parameters in a single DSO-16 package-reducing system-level complexity while enabling adaptive efficiency tuning across production batches.

Availability

IDP2303XUMA1 is available at Aetrix Electronics and suitable for LCD-TV power supplies, industrial SMPS, medical auxiliary converters, and commercial display backlight drivers requiring stable component supply, long-lifecycle availability, and design-in flexibility through OTP configuration.

Supply support for IDP2303XUMA1 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 leader specializing in power management, automotive MCUs, and industrial control ICs, with global manufacturing and quality certification to ISO/TS 16949 and IECQ QC 080000.

IDP2303XUMA1 belongs to Infineon's digital AC-DC controller product line, designed specifically to replace multi-chip PFC+LLC solutions in high-efficiency, low-standby-power offline power supplies for visual display and industrial equipment.

FAQ

What is the function of the HV pin on IDP2303XUMA1?

The HV pin serves three confirmed functions: (1) provides 600 V-rated input for the internal startup cell to charge VCC at power-on; (2) enables passive X-capacitor discharge during standby via internal HV-switched path; and (3) supports sampled high-voltage sensing for brown-in/brown-out detection using an external resistor divider. It does not require external active circuitry.

Does IDP2303XUMA1 support simultaneous burst mode for both PFC and LLC stages?

Yes-IDP2303XUMA1 implements synchronous burst mode where both PFC and LLC controllers enter and exit burst operation in coordinated timing. This is confirmed in Section 3.3.3 of the datasheet and reduces total no-load power to <30 mW without requiring external synchronization signals or additional control logic.

Can the MFIO pin be used for both UART communication and protection functions?

Yes-the MFIO pin operates in time-multiplexed mode: during normal operation it serves as half-duplex UART for OTP configuration; during fault conditions it can be repurposed as redundant PFC output overvoltage protection input (per Section 4.4.2). A BSS127 transistor is required for this dual-role implementation as specified in Figure 1 and Section 4.4.3.4.

What is the maximum operating frequency of the LLC half-bridge controlled by IDP2303XUMA1?

The LLC oscillator supports a maximum switching frequency of 750 kHz, as defined by the VCO gain and feedback loop bandwidth in Section 3.5.2. The actual operating frequency depends on resonant tank design and is programmable via OTP-configurable VCO slope and offset-enabling precise tuning from 100 kHz to 750 kHz without hardware changes.