M
MK
- Jan 1, 1970
- 0
Can someone verify my understanding of a boost converter?
For a basic boost (step-up) converter, once the inductor has been
charged and a magnetic field has formed, the switch to ground is opened
and the charge gets transferred to the capacitor through the inductor.
The inductor voltage spikes because the current cannot change by a
finite amount instantaneously. Once the voltage spike reaches to 0.7 V
(assuming a silicon diode) above the capacitor voltage, the diode
forward biases and transfers the charge to the capacitor.
Thus, the capacitor is only charged each cycle by a voltage slightly
above the diode turn on voltage.
Specifically then besides verifying my above observation, is my idea
about the inductor and diode also valid?
Thanks.
For a basic boost (step-up) converter, once the inductor has been
charged and a magnetic field has formed, the switch to ground is opened
and the charge gets transferred to the capacitor through the inductor.
The inductor voltage spikes because the current cannot change by a
finite amount instantaneously. Once the voltage spike reaches to 0.7 V
(assuming a silicon diode) above the capacitor voltage, the diode
forward biases and transfers the charge to the capacitor.
Thus, the capacitor is only charged each cycle by a voltage slightly
above the diode turn on voltage.
Specifically then besides verifying my above observation, is my idea
about the inductor and diode also valid?
Thanks.