Power Integrations InnoSwitch4-CZ Flyback Switcher ICs
In conjunction with PI’s ClampZero™ Solution
The Power Integrations InnoSwitch4-CA is a family of Flyback Switcher ICs, marking a significant milestone for GaN technology.
Made for extremely compact chargers in applications such as phones, tablets and laptops, the InnoSwitch4-CZ family incorporates a 750 V switch using Power Integrations’ PowiGaN™ technology to enable 95% flyback efficiency.
The Power Integrations InnoSwitch4-CZ group also includes primary and secondary controllers, active clamp drive, synchronous rectification and safety-rated feedback in a single, compact InSOP-24D package. A switching frequency of up to 140 kHz minimizes transformer size, further increasing power density, while the ClampZero active clamp device increases system efficiency up to 95%.
The new flyback switcher ICs enable exceptional CV/CC accuracy, independent of external components and consume less than 30 mW no-load, including line-sensing safety and protection features. The devices are fully protected featuring auto-restart or latching fault response for output over-voltage and under-voltage protection, multiple output under-voltage fault thresholds and latching or hysteretic primary over-temperature protection.
InnoSwitch4-CZ Schematic
Off-Line CV/CC ZVS Flyback Integrated Switcher IC with 750 V PowiGaN, Active Clamp Drive and Synchronous Rectification, Pairs With ClampZero Active Clamp IC
ClampZero Schematic
Active Clamp IC with Integrated High-Voltage Switch, Pairs with InnoSwitch4 Family of Offline Switcher ICs
Key Features (InnoSwitch4-CZ)
| Applications
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Design Tool:
- PI Expert with InnoSwitch4-CZ
Design Examples:
- DER-928 ultra-compact, no-heatsink, 60 W USB PD adapter
