Power Integrations has expanded its isolated switcher IC family with three new gallium nitride (GaN) devices that support display and appliance power supply applications with continuous power of up to 75 W without a heatsink.
The InnoSwitch 3-MX isolated switcher IC family uses a single-stage power architecture that reduces losses in display applications by 50% when compared to conventional designs, increasing overall efficiency to 91% in constant-voltage and constant current light emitting diode (LED) backlight driver designs.
Eliminating the need for post regulation stages, TV and monitor designers can halve component count, improve reliability and reduce manufacturing costs.
The switcher ICs combine the primary switch, primary-side controller, a secondary-side synchronous rectification controller and Power Integrations FluxLink high-speed communications link. The switch IC receives control instructions from a chipset that measures load requirements of each output and directs the IC to deliver the right amount of power to each output.