News: Microelectronics
28 February 2024
Power Integrations launches InnoMux-2 switcher IC family with multiple, independently regulated outputs
Power Integrations Inc of San Jose, CA, USA, which provides high-voltage integrated circuits for energy-efficient power conversion, has launched 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 percentage points compared with traditional two-stage architectures. Efficiency is aided by the ICs’ 750V PowiGaN gallium nitride transistors, zero-voltage switching (without an active clamp) and synchronous rectification.
“Most modern electronic systems rely on multiple internal voltages to operate various functions such as computing, communication and actuation function – typically heat, light, sound or motion of some kind. But losses in each conversion stage are compounded, degrading system performance and generating heat,” says Roland Saint-Pierre, VP of product development. “The InnoMux-2 IC overcomes this challenge by providing up to three independently regulated voltage outputs or two voltage outputs and a constant-current output from a single stage, achieving a compact and efficient power sub-system with low component count.”
InnoMux-2 ICs deliver up to 90W 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 InnoMux-2 controller also manages light-load power delivery, avoiding the need for pre-load resistors and reducing no-load consumption to less than 30mW. This conserves power for necessary functionality in applications subject to the 300mW 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.
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:
