TT Electronics announced the launch of its new 700-watt medical-grade enclosed power supply, the TAAM700. With a small 6.7-inch x 3.66 inch footprint, the TAAM700 provides 17.8W per cubic inch and a wide operating temperature range from ‐30°C to +70°C for thermally challenging environments. Coupled with its compact size, TAAM700’s industry-leading power density is ideal […]
Power Electronic Tips
Battery management IC improves charge and fuel gauge accuracy
Analog Devices, Inc. announced the MAX17330 battery management integrated circuit (IC) with integrated fuel gauge and advanced battery protection for one-cell lithium-ion/polymer batteries that delivers a longer battery runtime for consumer applications than similar products. The new IC expands ADI’s battery management portfolio, which already delivers accuracy for the automotive and industrial markets that are […]
AC-DC power supplies boast 330% peak current
COSEL Co, Ltd announced the introduction of 1,000W free-air convection cooling power supplies, the AEA1000F series. With demanding applications in mind, the AEA1000F is able to deliver 330% peak power for a period of up to 3,000 milliseconds. Designed for applications requiring a high level of safety, the AEA1000F is certified according to the EN62477-1 […]
Battery charger IC handles low-voltage charging of wearables, compact IoT devices
The BD71631QWZ battery charger IC from Rohm Semiconductor is designed to provide low-voltage charging of wearables (e.g., wireless ear buds) and thin, compact IoT devices (e.g., smart displays) powered by rechargeable batteries. In recent years, the need for safer, higher density rechargeable batteries has led to the development of new battery types. This includes all-solid […]
Power factor correction topologies
With the rise of green energy and transportation technologies, power factor correction (PFC) is growing in importance. PFC is an integral aspect of green energy designs since it can improve energy efficiency. PFC topologies can be passive, partial switching, or active, depending on system requirements. The appearance of wide bandgap power semiconductors combined with advanced […]
Flybacks, forwards, active clamps, PoE, and USB PD
Power-over-Ethernet (PoE) and USB power delivery (PD) systems are quite different in terms of the required power controllers. Still, they are very similar in terms of output power requirements. While PoE typically uses 48 Vdc input power for local power converters, USB PD power adapters typically operate from AC mains voltages. But various PoE and […]
Book review: GaN Power Devices and Applications, (published by Power Conversion Publications) edited by Alex Lidow, First Edition
Alex Lidow’s latest book provides an update on gallium-nitride technology and applications. Lidow, CEO and co-founder of Efficient Power Conversion (EPC) and the former CEO of International Rectifier, is actually the book’s editor: besides Lidow, there are 27 other contributors. Lidow says there’s a need for this book because of the numerous advances in GaN […]
Common-mode chokes support high-voltage, dc power line applications
Bourns, Inc. announced its new automotive-grade, AEC-Q200 compliant SRF7035A Common Mode Choke Series designed to support high voltage and current in DC power line applications. There are five impedance ratings with voltages up to 80 VDC and current up to 5 A. This gives designers additional flexibility and also expands the use of compact common-mode filters […]
Highly efficient wide-input dc/dc converters come in 1/32nd bricks
Through-hole, 1/32nd brick-footprint, non-isolated DC/DCs called the RPMA-4.5 and RPMA-8.0 carry 4.5-A and 8-A output ratings respectively. Each part has a wide 9-53-V input and trimmable, fully regulated output from 5-30 V (RPMA-4.5) or 3.3-16.5 V (RPMA-8.0). The cost-effective parts feature high efficiency, peaking at 98%, allowing fully-rated load operation to +60°C with convection cooling […]
Ultra-high power thick-film chip resistors offer PCB space savings
Today’s electronics devices push the envelope for smaller designs and greater functionality. Stackpole’s RMCP-UP is a high-power thick film chip resistor with very high power ratings for each case size, ranging from 0.2W rated 0402 sizes to 3W 2512 size. These elevated power ratings allow design engineers to use smaller chip resistors to free up […]