公开(公告)号：US20240022244A1

公开(公告)日：2024-01-18

申请号：US17866128

申请日：2022-07-15

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Sachin S ,  Subramanian NARAYAN ,  Krishnamurthy SHANKAR

IPC: H03K17/687

CPC classification number: H03K17/6871 ,  H02P27/04

Abstract: A gate driver includes a gate current circuit and a driver logic circuit. The gate current circuit has a gate current circuit output and includes first and second current sources coupled to the gate current circuit output. The driver logic circuit has a capacitor and is configured to: charge and discharge the capacitor to generate a detect voltage across the capacitor; cause the first current from the first current source to flow to the gate current circuit output in response to a voltage on the gate current circuit output being below the detect voltage; and cause the second current from the second current source to flow to the gate current circuit output in response to the voltage on the gate current circuit output being above the detect voltage.

公开(公告)号：US12021517B2

公开(公告)日：2024-06-25

申请号：US17866128

申请日：2022-07-15

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Sachin S ,  Subramanian Narayan ,  Krishnamurthy Shankar

IPC: H03K17/687 ,  H02M1/08 ,  H02P27/04

CPC classification number: H03K17/6871 ,  H02M1/08 ,  H02P27/04 ,  H03K2217/0063 ,  H03K2217/0072

Abstract: A gate driver includes a gate current circuit and a driver logic circuit. The gate current circuit has a gate current circuit output and includes first and second current sources coupled to the gate current circuit output. The driver logic circuit has a capacitor and is configured to: charge and discharge the capacitor to generate a detect voltage across the capacitor; cause the first current from the first current source to flow to the gate current circuit output in response to a voltage on the gate current circuit output being below the detect voltage; and cause the second current from the second current source to flow to the gate current circuit output in response to the voltage on the gate current circuit output being above the detect voltage.