100 A isolated POL converter responds quickly to step load changes

Power Electronics / Power Management

22 September 2004 Power Electronics / Power Management

Vicor says that its latest V·I chip voltage transformation module (VTM), the V048K015T100, is the first such product capable of 100 A. The VTM meets the demands of advanced DSP, FPGA, ASIC, processor cores and microprocessor applications at the point of load (POL) while providing isolation from input to output.

The company says it delivers up to 100 A from a package less than 4,1 cm³ in volume and responds in a fraction of one microsecond to no load-full load and full load-no load step demand changes.

It is optimised for very low output voltages at high currents, and touts an efficiency of 90% at 1,2 V/100 A, and better than 92% at 50 A. The VTM may be paralleled to deliver hundreds of amps at an output voltage settable from 0,8 to 1,6 V d.c. As a point-of-load current multiplier (32 X) with megahertz bandwidth, the VTM can eliminate bulk capacitors and the high power distribution losses caused by bussing high currents to the POL.

The VTM V048K015T100 is rated for a maximum continuous output of 100 A up to 1,5 V_OUT and 150 W up to 1,6 V over a Vf input range of 26 to 55 V d.c. It can be operated either open- or closed-loop depending on the output regulation needs of the application. Operating open loop, the output voltage tracks its Vf input voltage with a transformation ratio, K=1/32, and an output resistance, R_OUT =1,0 mΩ, to enable applications requiring a programmable low output voltage at high current and high efficiency. Closing the loop back to an input pre-regulator module or DC-DC converter compensates for R_OUT.

The 1,5 V VTM achieves a current density of 24 A/cm³ in a V·I Chip package that is compatible with standard pick-and-place and surface-mount assembly processes.

Share this article:

Solving South African power problems with locally built intelligence
Editor's Choice Power Electronics / Power Management
Smart metering infrastructure in South Africa remains patchy. The rollout has been slow, coverage is inconsistent, and for the most part, granular per-unit measurement simply does not exist.

Read more...

Wide range power module
Power Electronics / Power Management
The latest DC-DC modules from Würth Elektronik are characterised by high resilience to voltage transients on the 24 V bus and an extremely wide input-voltage range from 3,5 V to 38 V.

Read more...

Selecting primary batteries for maximum service life
Uniross Batteries Power Electronics / Power Management
Primary batteries play an important role in IoT applications. Designed for longevity, they have a high-energy capacity and are often used in standalone applications where charging is impractical or impossible.

Read more...

4 kW e-mobility DC-DC converter
Brabek Power Electronics / Power Management
The RECOM RMOD4000 series of compact, plug-and-play DC-DC converters is a cost-effective solution to provide isolated 14 V, 28 V, or 56 V DC network rails from a high input voltage between 180 and 950 V DC.

Read more...

Aluminium case upgrade boosts performance
Vepac Electronics Power Electronics / Power Management
The SQBF Quarter Brick 300 W DC to DC Converter is now available in a newly upgraded metal case designed to deliver improved durability and superior electrical performance across demanding applications.

Read more...

Extending the range of power converters
RS South Africa Power Electronics / Power Management
Power Integrations recently announced a breakthrough in flyback topology extending the power range of flyback converters to 440 W - well beyond the limits that traditionally required more complex resonant and LLC topologies.

Read more...

Categories

Power Electronics / Power Management

100 A isolated POL converter responds quickly to step load changes

Further reading:

Publications by Technews