Power Integrations InnoMux2-EP Off-Line ZVS Flyback Switcher ICs

Power Integrations InnoMux™2-EP Off-Line Zero Voltage Switching (ZVS) Flyback Switcher ICs feature up to three constant voltage (CV) outputs or one CV and one constant current (CC) output for dimmable LED strings in monitors, TVs, and appliances with lighting or display requirements. The InnoMux2-EP modules are designed to greatly improve power conversion efficiency. By independently regulating and protecting each output, the ICs eliminate multiple downstream conversion stages. Power Integrations InnoMux2-EP Off-Line ZVS Flyback Switcher ICs incorporate both primary and secondary-side controllers, with protection, sense elements, and a safety-rated FluxLink™ feedback mechanism into a single IC. The modules include enhanced features for maximizing conversion efficiency, including quasi-resonant switching in discontinuous conduction mode (DCM) operation, accurate SR control, and minimum threshold regulation for LED drivers.

Features

Highly integrated, compact footprint:
- Up to 3x independently regulated outputs using a single controller and transformer
- Eliminates post regulators
- Incorporates multi-mode quasi-resonant DCM and continuous conduction mode (CCM) flyback controller, 650V, 725V, or 750V power switch, secondary-side control, and synchronous rectification driver
- Integrated FluxLink feedback link eliminates optocouplers
- <±5% CV transient response with 100% load step
- Up to 200V outputs for CV and CC (LED drive) configurations
EcoSmart™ and energy-efficient:
- PowiGaN™ technology enables >90% efficient power supplies (IMX2378F-TL, IMX2379F-TL, and IMX2370F-TL)
- Proprietary switching algorithm ensures high efficiency across load
- Low dissipation allows PCB cooling, no heat sinks required
- Green package, halogen-free, and RoHS compliant

Advanced protection / safety:
- Primary sensed output OVP
- Open SR-FET gate detection
- Hysteretic thermal shutdown
- Input voltage monitor with accurate brown-in / brown-out and overvoltage protection
- Overload protection for each output
- LED short / open protection
Full safety and regulatory compliance
- Reinforced isolation
- >4000V_AC isolation voltage
- 100% production hipot tested
- UL 1577 and TUV (EN 62368) safety testing in progress
- Enables designs required to meet class A performance criteria for EN 61000-4 suite of test standards, including EN 61000-4-2, 4-3 (30V/m), 4-4, 4-5, 4-6, 4-8 (100A/m), and 4-9 (1000A/m)

Applications

High-efficiency driver for monitors and TVs
Designs that need to meet Energy Star 8, CEC, and 2021/2023 EU labeling requirements
High-efficiency multi-output power supplies for smart meters, appliances, and industrial use