Invention Grant
- Patent Title: Non-resistive load driver
- Patent Title (中): 非阻性负载驱动器
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Application No.: US11843216Application Date: 2007-08-22
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Publication No.: US08164365B2Publication Date: 2012-04-24
- Inventor: David Wright , Jason Muriby , Erhan Hancioglu
- Applicant: David Wright , Jason Muriby , Erhan Hancioglu
- Applicant Address: US CA San Jose
- Assignee: Cypress Semiconductor Corporation
- Current Assignee: Cypress Semiconductor Corporation
- Current Assignee Address: US CA San Jose
- Main IPC: H03B1/00
- IPC: H03B1/00

Abstract:
Embodiments of the invention relate to a method and apparatus to drive non-resistive loads. The non-resistive load driver may include two or more drivers, such as a high-drive circuit and a low-drive circuit, to drive rail-to-rail output voltages and to stabilize the output voltages at a substantially constant level. The high-drive circuit may drive the output voltage of the non-resistive load driver to a threshold level, whereas the low-drive circuit may modify the output voltage of the non-resistive load driver to approximate an input voltage of the non-resistive load driver, and compensate any leakage associated with the non-resistive loads to provide a substantially constant output voltage. The low-drive circuit consumes less current than the high-drive circuit. The non-resistive load driver consumes less power and use less chip space. Alternatively, the non-resistive load driver may be implemented using a single driver with multiple modes, such as a low-drive mode and a high-drive mode, by changing a bias current of the non-resistive load driver between a high current mode and a low current mode.
Public/Granted literature
- US20080258797A1 NON-RESISTIVE LOAD DRIVER Public/Granted day:2008-10-23
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