Infineon Technologies ICE2HS01GXUMA1

Overview

ICE2HS01GXUMA1 from Infineon Technologies is a high-performance resonant mode controller IC designed specifically for half-bridge LLC resonant converters with synchronous rectification. It delivers 30 kHz–1 MHz switching frequency, 50% primary/secondary duty cycle, adjustable dead time (100–1000 ns), ±1% frequency accuracy, and integrated over-load/open-loop protection with programmable blanking and restart timing - enabling high-efficiency AC-DC power supplies in server and telecom applications.

For engineers reviewing the ICE2HS01GXUMA1 datasheet, ICE2HS01GXUMA1 pinout, ICE2HS01GXUMA1 application, or ICE2HS01GXUMA1 equivalent, key selection criteria include its dual-gate drive capability (HG/LG + SHG/SLG), VINS-sensed mains undervoltage hysteresis, three-level OCP architecture, and SRD-controlled synchronous rectification enable/disable logic across CCM/DCM modes.

Technical Context

The ICE2HS01GXUMA1 implements a dedicated analog control architecture for LLC resonance control, featuring an internal oscillator with external RC frequency setting via FREQ pin (2 V reference), independent dead-time generation via TD pin (2 V-regulated current sink), and resonant voltage mode detection via Vres/VINS comparison to auto-select CCM or DCM gate timing behavior.

Its synchronous rectification control includes SRD pin for duration/disabling, CL pin for current-level feedback, and Delay pin for programmable turn-off delay between primary and secondary switches - all coordinated with soft-start (SS), load detection (LOAD), and burst-mode enable (EnA) functions to maintain regulation across ultra-light to full-load conditions.

Key Specifications

Pinout & Package

ICE2HS01GXUMA1 is housed in a PG-DSO-20-45 surface-mount package (20-pin, 7.5 mm × 12.5 mm, 0.65 mm pitch), thermally enhanced for high-power SMPS operation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar resonant mode controller applications.

Compared with UCC256301 and IR3584M, ICE2HS01GXUMA1 uniquely integrates CCM/DCM-aware synchronous rectification, programmable dead time, and mains-sensed hysteresis in a single 20-pin DSO package - reducing bill-of-materials and improving light-load efficiency without sacrificing transient robustness.

Availability

ICE2HS01GXUMA1 is available at Aetrix Electronics and suitable for server power supplies, telecom rectifiers, flat panel TV power boards, and industrial AC-DC adapters requiring stable component supply, long-term lifecycle support, and qualified automotive-grade traceability.

Supply support for ICE2HS01GXUMA1 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 AG is a German semiconductor manufacturer specializing in power management, automotive, and industrial control ICs, with global R&D and manufacturing infrastructure.

The ICE2HS01G product line targets high-efficiency resonant converter designs - specifically engineered to simplify half-bridge LLC implementation with integrated synchronous rectification control and adaptive protection features.

FAQ

What is the function of the Vres pin?

The Vres pin sets the resonant voltage threshold that determines whether the ICE2HS01GXUMA1 operates in continuous conduction mode (CCM) or discontinuous conduction mode (DCM). When Vres voltage falls below VINS, the IC adds turn-on delay to secondary gate signals for CCM operation; no delay is applied in DCM. This enables automatic SR timing adaptation without external mode selection logic.

How does the Timer pin affect overload protection behavior?

The Timer pin connects an RC network (CTL and RTL) to configure two independent timing functions: the blanking time (determined by CTL charging via internal current source) prevents false OLP triggering during short transients, and the restart time (determined by CTL discharging through RTL) sets the delay before resuming switching after fault clearance - ensuring stable recovery under sustained overload.

Can ICE2HS01GXUMA1 drive external high-side gate drivers?

Yes - HG and LG outputs are logic-level gate drive signals compatible with standard high- and low-side gate driver ICs (e.g., IRS21844, IR2110). The IC does not integrate bootstrap circuitry but provides precisely timed, 50%-duty complementary signals with programmable dead time, allowing flexible integration with discrete or integrated driver stages.

Is the Vref pin intended for external circuit biasing?

Yes - the Vref pin delivers a tightly regulated 5.0 V ±1% output used to bias external resistors for TD (dead time), Vres (resonant mode), and Vmc (missing-cycle thresholds). Its low-noise, high-PSRR design ensures stable reference for precision analog timing functions across temperature and load variations.