Infineon Technologies ICE3AR4780VJZXKLA1

Overview

ICE3AR4780VJZXKLA1 from Infineon Technologies is an integrated off-line SMPS current-mode controller with monolithically embedded 800V avalanche-rugged CoolMOS™, startup cell, input overvoltage protection (OVP), and frequency jittering - all in a PG-DIP-7 package. It delivers 31W at 230VAC ±15%, operates at a fixed 100kHz switching frequency, features ±5% current-limit tolerance, and achieves <100mW standby power via Active Burst Mode for adapter and auxiliary power supply applications.

For engineers reviewing the ICE3AR4780VJZXKLA1 datasheet, ICE3AR4780VJZXKLA1 pinout, ICE3AR4780VJZXKLA1 application, or ICE3AR4780VJZXKLA1 equivalent, this device supports design of compact, low-EMI, high-voltage-input AC/DC converters requiring robust OVP, precise peak-current limiting, and auto-restart protection across wide ambient temperatures (–40°C to +125°C).

Technical Context

This controller implements a BiCMOS-based current-mode PWM architecture with patented propagation delay compensation and extendable blanking (via BV pin) to maintain stable operation during high-load transients. Its control unit integrates selectable Active Burst Mode entry/exit thresholds, soft gate drive (50Ω turn-on resistor), and built-in 10ms soft-start.

The integrated 800V CoolMOS™ enables direct connection to universal AC inputs (85–270VAC) without external HV startup circuitry. Input OVP is implemented through the BV pin with programmable threshold, while frequency jittering reduces EMI peaks without external components.

Key Specifications

Pinout & Package

Package: PG-DIP-7 (7-pin plastic dual in-line package, 10.16mm pitch, RoHS-compliant lead plating and halogen-free mold compound).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar off-line SMPS controller with integrated HV MOSFET applications.

Compared with ICE3AR4780JZ and ICE5QR0680AZ, ICE3AR4780VJZXKLA1 uniquely combines 800V integration, input OVP, and Active Burst Mode in DIP-7 - making it optimal for cost-sensitive, safety-critical auxiliary supplies needing single-chip simplicity and regulatory compliance.

Availability

ICE3AR4780VJZXKLA1 is available at Aetrix Electronics and suitable for adapter/charger designs, set-top box auxiliary supplies, and server standby power rails requiring stable component supply, long-term lifecycle support, and full traceability.

Supply support for ICE3AR4780VJZXKLA1 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.

This part belongs to the CoolSET™ F3R family - designed specifically for highly integrated, low-component-count offline SMPS solutions targeting energy-efficient consumer and computing auxiliary power supplies.

FAQ

What is the purpose of the BV pin?

The BV pin serves dual functions: input overvoltage protection and extendable blanking time. It monitors rectified AC input voltage via an external resistor divider; when threshold is exceeded, the controller disables switching. Simultaneously, it extends the blanking window during overload to prevent false current-sense triggering caused by transformer leakage spikes.

Does ICE3AR4780VJZXKLA1 require an external startup resistor?

No. The device integrates a dedicated startup cell that draws current directly from the rectified AC line to charge the VCC capacitor. This eliminates the need for an external high-voltage startup resistor, reducing component count, power loss, and PCB space in the primary-side circuit.

How does Active Burst Mode reduce EMI?

Active Burst Mode reduces EMI not by lowering average switching frequency, but by gating entire bursts of 100kHz pulses - creating longer silent intervals between activity. This shifts energy away from narrowband harmonics into wider, lower-amplitude spectral regions, easing compliance with CISPR 22/32 Class B conducted emission limits without increasing filter size.

Can ICE3AR4780VJZXKLA1 operate down to –40°C?

Yes. The device is fully specified and tested from –40°C to +125°C junction temperature. Its BiCMOS process ensures stable biasing and current-limit accuracy across this range, and the integrated CoolMOS™ maintains avalanche ruggedness even at low temperatures - validated for use in outdoor or unheated industrial enclosures.