“PowiGaN technology permits manufacture of 94% efficient power supplies suitable for regions with frequent brown-outs and line surges,” said the company. “This enables OEMs to specify a single power supply design to be used worldwide.”
InnoSwitch3 are families of off-line constant voltage constant current (CV/CC) fly-back switcher ICs, using novel inductive feedback to get high output accuracy without an opto-coupler.
The new devices have INN3x78C part numbers (bold in table below) and have ‘size 8’ 750V GaN transistor inside “enabling compact, efficient power supplies delivering between 27W and 55W without heatsink” according to Power Integrations.
The ICs are housed in the same high-creepage, safety-compliant InSOP-24D package as larger members of the GaN-based InnoSwitch3 families, which work up to 120W.
There are InnoSwitch3-CP, InnoSwitch3-EP and InnoSwitch3-Pro versions.
| Product | InnoSwitch3-Pro | InnoSwitch3-CE | InnoSwitch3-CP | InnoSwitch3-EP | InnoSwitch3-MX |
| Power | Up to 100W | Up to 65W | Up to 100W | Up to 100W | Up to 50W |
| Switch | 650, 725, 750V | 650V | 650, 725, 750V | 725, 750, 900V | 650, 725V |
| Parts with GaN transistors | INN3378C INN3379C INN3370C |
INN3278C INN3279C INN3270C |
INN3678C INN3679C INN3670C |
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| Target applications | USB-PD fast chargers other chargers adaptors power-tools |
audio chargers adopters IoT LCD monitors LCD TVs notebook adaptors power tools set-top boxes |
USB-PD fast chargers IoT |
industrial controls major appliances smart meters PC PSUs small appliances motor controls |
LCD monitors LCD TVs |
| Cable drop compensation | ✔ | ✔ | ✔ | ||
| Line OV/UV protection | ✔ | ✔ | ✔ | ✔ | ✔ |
| Output OVP | ✔ | ✔ | ✔ | ✔ | |
| Constant power | ✔ | ✔ | |||
| I²C interface | ✔ | ||||
| Dynamically adjustable voltage and current |
✔ | ||||
| Telemetry Status | ✔ | ||||
| Configurable protection | ✔ | ||||
| Compatible with InnoMux controller |
✔ |