Hardware, Power Electronics, Topic

BOOT STRAP CAPACITOR DESIGN

Photo of author

By Jackson Taylor

FOR ABOVE 10KHz

Above this range, frequency have less influence in boot capacitor design

CAPACITOR VALUE = TOTAL GATE CHARGE / VOLTAGE DROP ACROSS BOOTSTRAP DIODE

EXAMPLE

  • mosfet – CSD19534KCS
  • BOOTSTRAP DIODE – UF4007

Boot capacitor diagram

from data sheet

Hardware Hack

Stop Buying New Batteries for Your Tech

Electronics are expensive, but their power sources don't have to be. Discover the simple engineering trick to recondition dead batteries and bring your gadgets back to 100% capacity.

Watch the Free Video

TOTAL GATE CHARGE = 16.4 nC

VOLTAGE DROP ACROSS BOOTSTRAP DIODE = 0.7

C = 16.4 nC / 0.7 = 23nF

See also
HOW TO SEND OR RECEIVE SERIAL DATA IN PYTHON USING XCTU OR TO ARDUINO

TEMPERATURE INDICATOR AND FAN CONTROLLER

3 phase 50Hz inverter with sine wave filter simulation

Revive Your Dead Electronics

Got a drawer full of dead gadgets or a failing car battery? Instead of paying a premium for replacements, use this simple trick to easily recondition them right from home.

See How It Works