Invention Grant
- Patent Title: USB type-C/PD controller having integrated VBUS to CC short protection
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Application No.: US15955214Application Date: 2018-04-17
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Publication No.: US10855069B2Publication Date: 2020-12-01
- Inventor: Rajdeep Mukhopadhyay , Pulkit Shah , Vinod Joseph Menezes
- 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 Lawrence J. Bassuk; Charles A. Brill; Frank D. Cimino
- Main IPC: H02H3/26
- IPC: H02H3/26 ; H03K17/687 ; G06F13/40 ; H03K5/24 ; H01R13/66

Abstract:
A USB Type-C/Power Delivery controller chip includes a first pin for receiving a first voltage, a second pin for receiving a second voltage, and a third pin for coupling to the CC pin of a USB connector. The USB controller chip includes a VCONN power supply circuit having a blocking field effect transistor (BFET) coupled in series with a hot-swap field FET (HSFET) between the first and third pins, and first and second Zener diodes coupled anode-to-anode between the HSFET's source and gate. A cable detection circuit includes a BFET coupled between the second and third pins, and a Zener diode coupled between the BFET's gate and a lower rail. A power delivery physical layer circuit includes a receiver and a transmitter, each coupled to the third pin through a respective BFET, the respective BFETs each having a Zener diode coupled between respective gates and the lower rail.
Public/Granted literature
- US20190319447A1 USB TYPE-C/PD CONTROLLER HAVING INTEGRATED VBUS TO CC SHORT PROTECTION Public/Granted day:2019-10-17
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