InnoSwitch Family

The InnoSwitch™ Family of ICs combines primary, secondary and feedback circuits in a single surface-mounted off-line flyback switcher IC. The InnoSwitch IC incorporates a high-voltage primary-side switch, the primary-side controller, a secondary-side controller for synchronous rectification and an innovative new FluxLink™ technology that eliminates the need for an optocoupler.

PowiGaN™ is Power Integrations’ internally developed gallium nitride (GaN) technology. PowiGaN switches replace the traditional silicon transistors on the primary side, reducing switching losses and enabling power supplies that are more efficient, smaller and lighter than silicon alternatives. PowiGaN-based ICs achieve up to 95% efficiency across the full load range and up to 100 W in enclosed adapter implementations without requiring a heatsink.



FluxLink™ communication technology enables feedback information to be delivered across an isolation barrier without the use of any magnetic materials. FluxLink delivers a very high communication bandwidth which enables a much faster load-transient response. This proprietary technology meets all global noise immunity standards. For safety, it complies not only with UL and TUV global isolation standards but also the more stringent CQC 5,000 meter Chinese safety standard.

InnoSwitch Family Comparison Table

ProductData
Sheet
Power
Level
Switch
Rating
PowiGaN-
based Parts
HighlightsApplications
InnoSwitch3-Pro for digitally programmable voltage and current, available with PowiGaN technology
InnoSwitch3-ProUp to
100 W
650 V
725 V
750 V
INN3378C
INN3379C
INN3370C
Dynamically adjustable CV/CC  
InnoSwitch3-CP for IoT and other constant power applications, available with PowiGaN technology
InnoSwitch3-CPUp to
100 W
650 V
725 V
750 V
INN3278C
INN3279C
INN3270C
Constant power CV/CC 
InnoSwitch3-EP for major appliances and other open frame applications, available with PowiGaN technology
InnoSwitch3-EPUp to
100 W
725 V
750 V
900 V
INN3678C
INN3679C
INN3670C
Open frame adapter CV/CC, Unstable mains input voltages (900 V)  
  
InnoSwitch3-CE for external output current applications
InnoSwitch3-CEUp to
65 W
650 VExternal output current CV/CC  
  
 
InnoSwitch3-AQ for automotive use, AEC-Q100 qualified
InnoSwitch3-AQUp to
30 W
750 VAuxiliary, standby and bias power supplies for automotive use
InnoSwitch3-MX for LED displays, part of the InnoMux chipset
InnoSwitch3-MXUp to
85 W
650 V
725 V
750 V
INN3478C
INN3479C
INN3470C
Pairing with 
InnoMux controller