Infineon Technologies ICE5GR4780AGXUMA1

Overview

ICE5GR4780AGXUMA1 from Infineon is a fixed-frequency 800 V integrated power IC (CoolSET™) combining a PWM controller and avalanche-rugged CoolMOS™ in a single DSO-12 package, delivering 27.5 W at 220 VAC ±20% in DCM, featuring digital frequency reduction, selectable Active Burst Mode (<100 mW standby), and integrated error amplifier for non-isolated flyback topologies in auxiliary power supplies.

For engineers reviewing the ICE5GR4780AGXUMA1 datasheet, ICE5GR4780AGXUMA1 pinout, ICE5GR4780AGXUMA1 application, or ICE5GR4780AGXUMA1 equivalent, key selection criteria include its 800 V drain rating, 125 kHz switching frequency, 4.13 Ω R_DS(on), cascode-based fast startup, and comprehensive auto-restart protections including line overvoltage, VCC UV/OV, overload, and thermal shutdown.

Technical Context

This CoolSET™ integrates a current-mode PWM controller with a high-voltage 800 V CoolMOS™ in cascode configuration, enabling direct VCC pre-charging from the drain and eliminating external startup resistors. Its digital control core implements slope-compensated DCM/CCM operation and propagation-delay-compensated peak-current limiting.

The device supports both isolated and non-isolated flyback topologies: VERR connects to GND for optocoupler feedback (isolated), or remains active for direct TL431-like regulation (non-isolated). ABM entry/exit thresholds are set via FB pin voltage, and LOVP is configured via VIN resistor divider or grounded disable.

Key Specifications

Pinout & Package

ICE5GR4780AGXUMA1 is housed in a PG-DSO-12 (12-pin, exposed drain pad) package with four parallel drain terminals (pins 5–8) for low-inductance, high-current switching and thermal dissipation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar fixed-frequency flyback controller with integrated HV MOSFET applications.

Compared with ICE5GR4770AG, ICE5GR4780AGXUMA1 delivers higher voltage robustness and better light-load efficiency; versus ICE5GR2280AG, it trades output power headroom for tighter thermal design and lower gate charge in compact auxiliary supplies.

Availability

ICE5GR4780AGXUMA1 is available at Aetrix Electronics and suitable for auxiliary power supplies in home appliances, TV/monitor standby rails, and set-top box power management requiring stable component supply, JEDEC-qualified industrial reliability, and RoHS-compliant packaging.

Supply support for ICE5GR4780AGXUMA1 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 silicon and SiC power devices.

The CoolSET™ product line delivers fully integrated fixed-frequency flyback controllers with embedded high-voltage MOSFETs, designed specifically for compact, low-cost, and highly reliable auxiliary power supplies in consumer and industrial equipment.

FAQ

What is the recommended minimum copper area for the DRAIN pins on a 2 oz PCB?

Per Infineon's thermal validation data, the minimum drain pin copper area is defined for an open-frame design at T_a=50°C and T_J=125°C. For ICE5GR4780AGXUMA1, use ≥250 mm² of 2 oz copper connected directly to pins 5–8, with thermal vias to inner/ground planes. This ensures safe operation at 27.5 W output in DCM without derating.

Can the ICE5GR4780AGXUMA1 operate in continuous conduction mode (CCM)?

Yes - the device supports both DCM and CCM operation with internal slope compensation enabled automatically above 50% duty cycle. CCM operation yields higher output power (16 W at 85–300 VAC) and improved light-load regulation but requires careful transformer design to avoid subharmonic oscillation.

How is line overvoltage protection (LOVP) configured and disabled?

LOVP is configured using a resistor divider from bulk DC bus to VIN (pin 1); threshold is set by divider ratio and internal 1.25 V reference. To disable LOVP, tie VIN directly to GND - this disconnects the comparator input and prevents shutdown during overvoltage events.

Does the integrated error amplifier support Type II or Type III compensation networks?

The internal transconductance error amplifier supports standard Type II compensation (one pole, one zero) via external R-C network between VERR and FB. Type III is not supported due to lack of second pole; adding a third capacitor creates instability. Designers should follow Infineon's AN2019-07 for loop stability verification.