Invention Grant
- Patent Title: High speed voltage level shifter
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Application No.: US15367751Application Date: 2016-12-02
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Publication No.: US09948303B2Publication Date: 2018-04-17
- Inventor: Venkat Narayanan , Rakesh Vattikonda , De Lu , Ramaprasath Vilangudipitchai , Samrat Sinharoy , Rui Chen
- Applicant: QUALCOMM Incorporated
- Applicant Address: US CA San Diego
- Assignee: QUALCOMM Incorporated
- Current Assignee: QUALCOMM Incorporated
- Current Assignee Address: US CA San Diego
- Agency: Loza & Loza, LLP/Qualcomm
- Main IPC: H03L5/00
- IPC: H03L5/00 ; H03K19/0185 ; H03K19/00

Abstract:
In one embodiment, a voltage level shifter includes a first p-type metal-oxide-semiconductor (PMOS) transistor having a gate configured to receive an input signal in a first power domain, and a second PMOS transistor, wherein the first and second PMOS transistors are coupled in series between a supply voltage of a second power domain and a node. The voltage level shifter also includes an inverter having an input coupled to the node and an output coupled to a gate of the second PMOS transistor, and a first n-type metal-oxide-semiconductor (NMOS) transistor having a gate configured to receive the input signal in the first power domain, wherein the first NMOS transistor is coupled between the node and a ground.
Public/Granted literature
- US20180006651A1 HIGH SPEED VOLTAGE LEVEL SHIFTER Public/Granted day:2018-01-04
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