Power Electronics / Power Management


Ideal diode bridge rectifier reference design

10 August 2016 Power Electronics / Power Management

Linear Technology announced the availability of a low-loss, 3-phase ideal diode bridge rectifier reference design, demonstrated on evaluation board DC2465.

Conventional 3-phase rectifiers employ six diodes, but the diodes drop voltage and dissipate significant power at just a few amperes of load current. This requires costly heatsinking and active cooling solutions that complicate thermal design and increase solution size. The DC2465 design replaces the six diodes with three LT4320 ideal diode bridge controllers, driving six low-loss N-channel MOSFETs, dramatically reducing power and voltage losses.

This enables the overall system to be specified to operate with a smaller, more cost-effective power supply due to the enhanced power efficiency. Low-voltage applications benefit from the extra margin afforded by saving the two diode drops inherent in diode bridges. Compared to traditional approaches, the MOSFET bridge enables a rectifier design that is highly space- and power-efficient.

The DC2465 board rectifies line-to-line AC voltages from 9 VRMS to 48 VRMS with frequencies up to 400 Hz while sourcing a load of up to 25 A without forced airflow. Efficiency at 9 V input is raised from 84% for a diode bridge to 97% for the active bridge.

The DC2465 evaluation board is available, and the LT4320 ideal diode bridge controller IC is offered in 8-pin MSOP, PDIP and 3 x 3 mm DFN packages.

For more information contact Conrad Coetzee, Arrow Altech Distribution, +27 (0)11 923 9600, ccoetzee@arrow.altech.co.za, www.arrow.altech.co.za



Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

Further reading:

Multiprotocol wireless SoC
Altron Arrow DSP, Micros & Memory
The EFR32MG24 Wireless SoCs are ideal for mesh IoT wireless connectivity using Matter, OpenThread, and Zigbee protocols for smart home, lighting, and building automation products.

Read more...
Synchronous step-down controller for GaN FETs
Altron Arrow Multimedia, Videos
The LTC7890 and LTC7891 are low IQ, dual, two-phase synchronous step-down controllers that have GaN drive technology fully optimised for GaN FETs.

Read more...
Local procurement should be top of mind in mine-owned solar power projects
Power Electronics / Power Management
Recent changes in government legislation have enabled businesses to develop up to 100 MW energy plants with very little red tape.

Read more...
The next big shift in SA's energy infrastructure
Power Electronics / Power Management
High-voltage (HV) LiFePO4 battery energy storage systems, commonly referred to as BESS, which drastically improve the power reliability prospects for businesses, have been around for some time, but expect to see a massive surge in 2024.

Read more...
Multi-channel electronic load series
Conical Technologies Power Electronics / Power Management
ITECH has recently announced the release of their upgraded IT8700P+ series multi-channel electronic loads. This new series supports master-slave parallel configuration between all the modules, allowing for different modules to be mixed and matched for synchronisation.

Read more...
Self-extinguishing batteries
Power Electronics / Power Management
The most commonly used electrolyte, which is highly combustible – a medium composed of a lithium salt and an organic solvent – is replaced with materials found in a commercial fire extinguisher.

Read more...
Input power bus conditioners
Accutronics Power Electronics / Power Management
The FLHG-60 and the FLHGI-60 are designed to be used as the front-end to the company’s MGDD N input series, to develop full power solutions.

Read more...
Isolated power module with high efficiency
RS South Africa Power Electronics / Power Management
The new MagI3C-FISM power module, with an integrated switching power stage, is 100% pin-to-pin compatible with the previous versions.

Read more...
Hi-Rel DC-DC converter
Accutronics Power Electronics / Power Management
The MGDD-06 series from GAÏA Converter is an ultra-wide input 6 W family of power converter modules, with a permanent input voltage range of 9 to 160 V DC.

Read more...
Energy measurement IC
CST Electronics Power Electronics / Power Management
The SY7T501 and SY7T502 are Silergy’s newest energy measurement ICs for cost-sensitive IoT applications such as smart-plugs, dimmers, power-strips, intelligent lighting, and other points of load.

Read more...