15 November 2017
Power Electronics / Power Management
The A7431 is a wide input voltage, high efficiency step-down DC-DC converter that operates in either constant voltage (CV) or constant current (CC) mode. It provides up to 3 A output current at 125 kHz switching frequency.
A7431 eliminates the expensive, high accuracy current sense resistor, making it ideal for battery charging applications and adaptors with accurate current limit. It achieves higher efficiency than traditional constant current switching regulators by eliminating its associated power loss on the additional current sensing resistor.
The device has an OVP pin for output over-voltage protection, and integrates adaptive gate drive to achieve excellent EMI performance passing the EN55022 Class B EMC standard without adding additional EMI components, while maintaining high conversion efficiency. Protection features include cycle-by-cycle current limit, thermal shutdown, and frequency foldback at short circuit.
The A7431 is available in a PSOP8 package and requires very few external components for operation.
The role of bidirectional charging in the evolving energy landscape Avnet Silica
Power Electronics / Power Management
As reliance on renewable sources like wind and solar continues to grow, the need for efficient energy flow and storage solutions has become more critical than ever.
Read more...Power amps for portable radio comms systems iCorp Technologies
Telecoms, Datacoms, Wireless, IoT
CML Micro expands its SµRF product portfolio with a pair of high efficiency single- and two-stage power amplifiers that offer outstanding performance for a wide range of dual-cell lithium battery-powered wireless devices.
Read more...How to calculate a buck converter’s inductance
Power Electronics / Power Management
In the buck circuit, the inductor design is a key element that is closely related to system efficiency, the output voltage ripple, and loop stability.
Read more...High-current EMI filters Accutronics
Power Electronics / Power Management
TDK has introduced 20 and 40 A, 80 V DC board-mount EMI filters, reducing differential mode conducted emissions for switching power supplies with high input current requirements.
Read more...Isolated SMD DC-DC converters iCorp Technologies
Power Electronics / Power Management
MinMax has launched a series of isolated SMD DC-DC converters, the MSU01 series delivering 1 W, while the MSU02 series offers 2 W output.
Read more...RF direct conversion receiver iCorp Technologies
Telecoms, Datacoms, Wireless, IoT
The CMX994 series from CML Micro is a family of direct conversion receiver ICs with the ability to dynamically select power against performance modes.
Read more...AsiaRF unveils full Wi-Fi 7 ecosystem iCorp Technologies
Telecoms, Datacoms, Wireless, IoT
This robust ecosystem includes high-performance Wi-Fi 7 wireless router modules including the flagship AW7995-AE1, equipped with the latest BE series chipset.
Read more...5G RedCap: Unlocking scalable IoT connectivity iCorp Technologies
Editor's Choice Telecoms, Datacoms, Wireless, IoT
As 2G and 3G networks rapidly sunset across the globe, the Internet of Things (IoT) market faces a critical challenge: how to maintain reliable cellular connectivity without the complexity or cost of full 5G.
Read more...Introducing Inpai iCorp Technologies
Telecoms, Datacoms, Wireless, IoT
Antenova has launched Inpai, a new SMD cellular antenna designed for NB-IoT and CATM on 4G/LTE networks.
While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.
printer friendly version