Charge Pump Gate Driver. Its 3 high side and 3 low side output stages are powerful enough to drive mosfets with a gate charge of 400 nc with rise and fall times of approximately 150 ns. 3 charge pump circuit one recommended method to avoid the conditions discussed in section 2 2 is to use a simple charge pump circuit to keep the boot capacitor continually charged.
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A bootstrap capacitor from vboost to the fet source pin supplies charge to quickly enhance the gate output during turn on. Drives the gate of an external power mosfet. Product details the ltc1156 quad high side gate driver allows using low cost n channel fets for high side switching applications.
Also limits vgs to 15v maximum to prevent gate to source damage.
A bootstrap capacitor from vboost to the fet source pin supplies charge to quickly enhance the gate output during turn on. The mic5019 operates from a 2 7v to 9v supply and generates gate voltages of 9 2v from a 3v supply and 16v from a 9v supply. Drives the gate of an external power mosfet. Ne555 charge pump circuit 3 1 theory of operation.
