Power Supplies

TDK-Lambda has announced 12V and 48V models of its 504W conduction-cooled PFH500F series of ac-dc power modules measuring 102 x 61 x 13.5mm (4 x 2.4in). Inside PFH500F-12 and PFH500F-48 are GaN power transistors, ‘bridge-less’ power factor correction and digital control, with digital isolators replacing optocouplers for reliability. Peak efficiency is 92%. PMBus is included for programming and remotely monitoring. Operating from ...

AOS has announced a 50W coil-driver for wireless charging transmitters. AOZ32034AQV is a half-bridge, designed to be used in full-bridge circuits driving a resonant tank circuit. “A key feature of this product family is the ability to adjust mosfet gate drive using the slew rate control pin,” said the company. “This allows a designer to trade-off between EMI and efficiency.” Slew ...

Teledyne e2v HiRel is screening 650V 60A GaN power transistors to NASA Level 1 flow for space use, and has released a 100V high-speed GaN or silicon gate driver. The transistors (right) are both enhancement-mode, top-side-cooled GaN-on-silicon hemts. “The parts go through NASA Level 1 screening flow and can be brought up to full Level 1 conformance with extra qualification testing if ...

Optimizing first for best power instead of best timing delivers better results all around. Among the key targets in place-and-route—performance, power, and area (PPA) — performance has traditionally been the primary focus. Low power has been gaining in importance though, particularly at today’s advanced process nodes. Of course, no one wants lower-performing chips, so place-and-route tools employ a variety of ...

TDK-Lambda has extended its CCG series of dc-dc converters further downward with the introduction of 3W and 1.5W models – in 2015 there were 30W CCG converters, reaching 15W the next year. The two new types have a lot in common. Firstly, they share a 15.7 x 10.4 x 11.5mm plastic case, with through-hole or surface-mount terminations (see photo). “On the ...

EPC is offering a three-phase motor driver evaluation board built around 80V 3.6mΩ GaN power transistors, sized for drones, robotics and e-bikes. “The small size of this inverter allows integration into the motor housing resulting in the lowest EMI, highest density and lowest weight,” said the company. Called EPC9167HC, the design uses two paralleled EPC2065 power transistors (seen as three ...

Diodes has launched a series of automotive-compliant synchronous buck converters for delivering up to 3A in automotive point-of-load converters in 3 x 2.8mm TSOT26 packages With 2A and 3A ratings, AP6320xQ and AP6330xQ respectively can operate with inputs from 3.8 to 32V and over -40 to +125°C. 3A versions integrate 70/40mΩ (high/low-side) mosfets, or 125/68mΩ for the 2A parts. There are six devices AP63200Q 2A, Vout ...

Digi-Key Electronics, in collaboration with Siemens, will host an online webinar about power reliability for automation and control systems. It takes place on Tuesday, 8 March, at 11 a.m. (CST) and will be presented by Greg Kateb, SITOP power product consultant for Siemens. Spcifically, Kateb will address a variety of scenarios that a power system might face, such as short ...

Infineon has created a family of single-channel isolated gate driver for IGBTs and silicon carbide mosfets with up to 300kV/μs common-mode transient immunity and up to +6  and -8.5 A typical peak current. Called 1ED332x, and branded ‘F3 Enhanced’, they come in 300mil wide DSO 16 packaging with 8mm creepage distance. Operation is expected with devices between 600V and 2.3kV – ...

Diodes has announced an ideal diode controller for reverse discharge protection. Called DZDH0401DW, it is designed to work with a p-channel mosfet in the high-side rail in systems up to 40V. It might better be described as a ‘nearly ideal diode controller’ as it draws some current from the output circuit when no input is connected – 147μA if a ...