Infineon Technologies ICL8820XUMA1

Overview

ICL8820XUMA1 from Infineon is a voltage-mode quasi-resonant flyback controller for constant-voltage (CV) output, supporting both secondary-side regulation (SSR) and primary-side regulation (PSR) topologies. It delivers high power factor (>0.9 at full load), low THD (<10% across 90–300 VAC input), operates in QRM/valley-switching DCM, includes burst mode for <30 mW standby power, and integrates jitter function for EMI compliance in DC-input emergency lighting applications.

For engineers reviewing the ICL8820XUMA1 datasheet, ICL8820XUMA1 pinout, ICL8820XUMA1 application, or ICL8820XUMA1 equivalent, key selection criteria include its SSR/PSR flexibility, adjustable on-time mapping for frequency control, integrated brown-in/brown-out protection, VCC wake-up burst operation, and dedicated jitter for DC-input EMI reduction - all validated per JEDEC20/22 for lighting and battery charging up to 125 W.

Technical Context

The ICL8820 implements voltage-mode control with digital state machine-based pulse generation, enabling precise valley switching in QRM and adaptive transition into DCM at light loads. Its THD correction circuitry adjusts turn-on delay via TD pin resistance, while VIN pin enables AC/DC detection and input voltage level monitoring for power limitation and protection.

It features dual-stage protection logic: analog comparators for CS-based OCP and VOVP, plus digital fault handling for OTP, open-loop, and VCC overvoltage. The jitter function modulates switching frequency only under DC input conditions, reducing peak EMI without external components - a feature exclusive to ICL8820 among the ICL88xx family.

Key Specifications

Pinout & Package

ICL8820XUMA1 uses the PG-DSO-8 package (8-pin, exposed pad, 150°C max junction temperature), with creepage distance ≥5.0 mm for reinforced insulation in lighting applications.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ICE5QSBG and ICL5102H, ICL8820XUMA1 uniquely combines SSR/PSR flexibility, DC-input jitter, and sub-30-mW burst-mode standby in a single PG-DSO-8 package - making it optimal for cost-constrained, EMI-critical, universal-input LED drivers and battery chargers up to 125 W.

Availability

ICL8820XUMA1 is available at Aetrix Electronics and suitable for emergency lighting drivers, smart LED lamps, 125-W battery chargers, and home appliance power supplies requiring stable component supply, JEDEC-qualified reliability, and RoHS-compliant packaging.

Supply support for ICL8820XUMA1 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 SiC technologies.

The ICL88xx product line targets cost-sensitive, high-efficiency flyback converters for lighting and battery charging, emphasizing single-stage PFC, SSR/PSR flexibility, and integrated protections - all validated for JEDEC20/22 reliability.

FAQ

Does ICL8820XUMA1 support primary-side regulation (PSR) without an optocoupler?

Yes. ICL8820XUMA1 supports PSR-CV topology using reflected voltage sensing on the CS pin, eliminating the need for optocoupler and TL431. It achieves ±5% output voltage regulation across line and load, verified in Figure 3 of the datasheet and validated per JEDEC22-A114 reliability testing.

What is the purpose of the jitter function, and when is it active?

The jitter function modulates switching frequency by ±6% to reduce EMI peak amplitudes. It activates exclusively under DC input conditions detected on the VIN pin - confirmed in Section 3.15 and Figure 5 block diagram - and is inactive during AC operation to preserve THD performance.

How does burst mode reduce standby power below 30 mW?

Burst mode lowers standby power by disabling gate drive pulses during light loads, while the VCC wake-up circuit maintains minimum VCC voltage using residual energy from the auxiliary winding. Reduced gate driver voltage in burst mode further cuts gate charge loss, as detailed in Section 3.7 and Table 4.3.8.

Can ICL8820XUMA1 be used with Infineon CoolMOS™ P7 without external gate resistors?

Yes. The GD pin is designed to directly drive CoolMOS™ P7 devices (e.g., IPD65R1K5CE) with internal 1.5-A peak sink/source capability. Layout guidelines in Section 5.2 recommend ≤10 cm trace length and local 100-nF decoupling, but no series gate resistor is required for typical 650-V/1.5-Ω devices.