Attention to Internet Explorer users: ROHM website does not recommend browsing in IE 11. Please use latest browser to ensure the best performance on ROHM website.
When using Schottky barrier diodes in a diode rectifying DC/DC converter, what is a rule of thumb for the input voltages that can be used? I have heard that it is better not to use too high a voltage.
The rated voltage of Schottky barrier diodes now on the market is generally up to 200 V. While there are differences depending on the application, generally a margin of from 1.3 to 2 times the input voltage is secured for a power supply. Calculating from this, for a 200 V device, inputs of up to about 100 V should be allowed. There are different policies with respect to margins, and in essence these are considered when making a decision.