Power Supplies

Power Integrations has announced the fifth generation of its InnoSwitch isolated fly-back ac-dc converter ICs, which removes the need for primary-side active clamping when operated in zero-voltage switching (ZVS) mode. Called the InnoSwitch5-Pro family, they include 750V or 900V GaN power switches, and the company claims they can be used in converters with over 95% efficiency. “The combination of ZVS ...

LEM and Semikron Danfoss have teamed up to monitor current in automotive silicon carbide power mosfet modules. The result is ‘Nano’, a current sensor that is compatible with Semikron’s DCM SiC power modules, which are rated at 750 or 1,200V and 200 to 1,000A. “The idea behind the Nano concept was to design a core-based current sensor that could fit ...

Diodes is aiming at active matrix OLED panels with three-output power management dc-dc converter. Running from 2.9 to 4.8V, AL3565 produces: 4.6 to 5.0V (VPOS) with 0.5% accuracy at up to 500mA from a buck-boost converter -1.4 to -5.4V (VNEG) with 0.5% accuracy at up to 500mA from an inverting buck-boost converter 5.8 to 7.9V (AVDD) with 0.5% accuracy at ...

Alpha and Omega has announced a double-side-cooled 100V 197A (25°C) mosfet in a 5 x 6mm DFN package. Called AONA66916, thermal resistance form the junction to the top and bottom surfaces is 0.5 and 0.55C/W respectively. “The top-exposed DFN 5×6 package shares the same footprint as AOS’ standard DFN 5×6 package, eliminating the need to modify existing PCB layouts,” said ...

Rohm has added a lineup of 600V super-junction mosfets in 6.5 x 7 x 1.66mm SOT-223-3 packaging. “In recent years, power supplies for lighting and motors for pumps are required to be smaller as devices become more sophisticated – spurring the demand for compact mosfets that are essential for switching operation,” said the company. “Generally, however, it has been difficult ...

ABLIC, the analogue IC subsidiary of MinebeaMitsumi, has  launched a series of automotive step-down switching regulators. The S-19954/5 series is a step-down switching regulator which operates at 5.5V with a 1A output and is housed in an HSNT-8(1616)B package (which is the industry’s smallest package (*1) at 1.6 x 1.6 x t0.41mm). In addition, while the circuit configuration of conventional ...

SemiQ will be exhibiting its 1.2kV SOT-227 silicon carbide mosfet power modules at APEC, the Applied Power Electronics Conference, at the end of February. The modules come with or without a co-packaged Schottky diode, with current ratings between 30 and 113A, and on-resistance spanning 80mΩ to 20mΩ respectively (see table). The SOT-227 package is designed to be bolted to a ...

Allegro MicroSystems has created an isolated gate driver IC for GaN power transistors that has no need for high-side bootstrapping nor the provision of a secondary side drive supply voltage. Instead, a dc-dc converter within AHV85111 produces secondary-side dc power rails – one positive and one negative – to provide gate drive power from a 12V supply (10.8 – 13.2V) ...

AMD has introduced a motor driver starter kit for its Kria K24 system-on-module – which is built around a Zynq UltraScale+ IC and measures 60 x 42 x 11mm. The kit, called KD240 drives starter kit, includes the module, a carrier card and a heat sink. Included is 2Gbyte (2chan x 256Mbit x 16bit/chan) of LPDDR4, and a 512Mbit QSPI ...

Würth Elektronik has introduced two families of surface-mount multi-channel galvanic isolators for digital signals. Devices in the WPME-CDIP family have four 100Mbit/s isolated channels and a built-in dc-dc converter that provides isolated power from one side to the other. Different versions have different combinations of digital isolator directions: all from input to output, three in that direction and one returning, ...