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

Power Integrations InnoMux™2-BL Off-Line Zero Voltage Switching (ZVS) Flyback Switcher ICs offer one constant voltage (CV) and up to four constant current (CC) outputs for dimmable LED strings in monitors or display panels. These modules provide accurate, isolated, off-line CV and CC regulation using a single transformer, which reduces the power sub-system component count and board area. The multiple-output, single-stage architecture eliminates DC/DC post regulators, providing regulated outputs. The InnoMux2-BL series incorporates both primary and secondary-side controllers with sense elements, protection, and a safety-rated FluxLink™ feedback mechanism into a single IC. Power Integrations InnoMux2-BL Off-Line ZVS Flyback Switcher ICs integrate enhanced features for maximizing conversion efficiency, including accurate SR control, quasi-resonant switching in discontinuous conduction mode (DCM) operation, and minimum threshold regulation for LED drivers.

Features

Highly integrated, compact footprint
- Accurate CV and CC outputs using single transformer, eliminating multiple post regulators
- Pairs with IML204DG to implement up to 4x accurate CC channels
- Incorporates multi-mode quasi-resonant DCM and continuous conduction mode (CCM) flyback controller with high-voltage switch, secondary-side control, and synchronous rectification driver
- Integrated FluxLink feedback link eliminates optocouplers
- <±5% CV transient response with 0% to 100% load step
- Up to 24V output for CV and up to 150V for CC
- LED drive output
EcoSmart™ and energy-efficient
- Design readily meets TV and monitor energy efficiency regulations
- 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)