Invention Grant
- Patent Title: Trickle charge control
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Application No.: US16587082Application Date: 2019-09-30
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Publication No.: US10763843B2Publication Date: 2020-09-01
- Inventor: Krishnamurthy Ganapathi Shankar
- Applicant: TEXAS INSTRUMENTS INCORPORATED
- Applicant Address: US TX Dallas
- Assignee: TEXAS INSTRUMENTS INCORPORATED
- Current Assignee: TEXAS INSTRUMENTS INCORPORATED
- Current Assignee Address: US TX Dallas
- Agent John R. Pessetto; Charles A. Brill; Frank D. Cimino
- Main IPC: H03K17/06
- IPC: H03K17/06 ; H02M3/07 ; H02P7/28 ; H03K17/22

Abstract:
A system includes a trickle charge control circuit coupled to a charge pump and a motor driver circuit. The trickle charge control circuit is configured to sense a voltage at a bootstrap capacitor voltage node (VBST) of the motor driver circuit; as a result of the voltage at VBST being greater than a voltage at an input voltage node (VIN), couple a charge pump voltage node (VCP) to VBST of the motor driver circuit, where a voltage at VCP is greater than the voltage at VIN; and as a result of the voltage at VBST being less than the voltage at VIN, decouple VCP from the charge pump from VBST of the motor driver circuit.
Public/Granted literature
- US20200036372A1 TRICKLE CHARGE CONTROL Public/Granted day:2020-01-30
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