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 the primary FET, the primary-side controller, a secondary-side controller for synchronous rectification and an innovative new FluxLink™ technology that eliminates the need for an optocoupler.

Power Integrations’ FluxLink™ is a proprietary new communication technology that 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. It is also highly reliable and does not suffer from the typical optocoupler degradation mechanisms. It is embedded into the package and by eliminating bulky optocouplers, it saves space and increases power density, which is particularly beneficial for adapters and chargers. Furthermore, 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.

(An audio-only version of this presentation is also available for download here.)

InnoSwitch Family Comparison Table

Product InnoSwitch-CH InnoSwitch-EP InnoSwitch-CP InnoSwitch-CE
Application USB Chargers Major Appliances/Industrial Rapid Charger USB-PD and QC 3.0 USB Charger/Consumers Electronics
Voltage Rating 650 V 725 V / 900 V 650 V 650 V
Over Current Protection (OCP) 2 Amp Internal OCP External sense resistor for accurate OCP control External resistor for accurate power control External sense resistor for accurate CC control
Line Over-Voltage/Under-Voltage Protection NA Yes Yes Yes
Cable Drop Compensation 0% or 6% 0 % 300 mV 0/300 mV