Power Integrations announced the InnoMux-2 family of single-stage, independently regulated multi-output offline power-supply ICs. InnoMux-2 ICs consolidate AC-DC and downstream DC-DC conversion stages into a single chip, providing up to three independently regulated outputs for use in white goods, industrial systems, displays and other applications requiring multiple voltages. Elimination of separate DC-DC stages slashes component count, reduces PCB footprint and increases efficiency by as much as 10% points compared to traditional two-stage architectures.

Efficiency is aided by the ICs? 750 V PowiGaN gallium-nitride transistors, zero-voltage switching (without an active clamp) and synchronous rectification. InnoMux-2 ICs deliver up to 90 watts of output power with accurate regulation of better than ±3% across the full input line, load, temperature and differential current step conditions.

Total power system efficiency (AC to regulated low-voltage DC segment) is above 90%; the advanced InnoMux-2 controller also manages light-load power delivery, avoiding the need for pre-load resistors and reducing no-load consumption to less than 30 mW. This conserves power for necessary functionality in applications subject to the 300 mW allowance for standby usage under the European energy-using product (EuP) regulations. InnoMux-2 devices leverage Power Integrations?

thermally efficient InSOP24 and InSOP28 packages with PCB cooling, so no heatsink is required. Device options include dual- and three-output constant voltage (CV); optionally, one output may be dedicated to constant current (CC) drive, suitable for powering LEDs in displays or for high-speed charging of an internal battery. Typical applications include TVs, monitors, appliances, networking, home and building automation, LED emergency lighting and industrial power supplies.

Availability & Resources: Pricing for InnoMux-2 IMX2174F devices starts at $1.11 for 50,000-unit quantities. Data sheets, three reference design reports and an introduction video are immediately available for download or viewing: InnoMux2-EP family data sheet; InnoMux2-BL family data sheet; IML204DG data sheet (four-channel LED backlight controller IC to partner with InnoMux2-BL for computer monitors); DER-714: a 52 W TV design with one CV and one CC output; DER-715: a 23 W monitor design with one CV and four CC outputs; and DER-716: a 62 W industrial and appliance design with three CV outputs.