Patent ID: 11906555
Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A method for emulating a high side current of a power switch including a low side switch and a high side switch, the method comprising:
generating, with a low side current sensor, a low side current signal for the low side switch when the power switch is in a low state;
generating, with a first transconductance amplifier, an emulated current signal based on an input voltage of the power switch;
generating, with a buffer, a fixed reference voltage by sampling the low side current signal when the power switch changes from the low state to a high state;
generating, with an emulator capacitor, an emulated voltage based on the emulated current signal and the fixed reference voltage; and
generating, with a second transconductance amplifier, a high side current signal for the high side switch based on the emulated voltage.