Invention Grant
- Patent Title: Multiple level charge pump generating voltages with distinct levels and associated methods
- Patent Title (中): 多电平电荷泵产生不同电平和相关方法的电压
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Application No.: US14461780Application Date: 2014-08-18
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Publication No.: US09225238B2Publication Date: 2015-12-29
- Inventor: Laurent Chevalier
- Applicant: STMicroelectronics International N.V.
- Applicant Address: NL Amsterdam
- Assignee: STMicroelectronics International N.V.
- Current Assignee: STMicroelectronics International N.V.
- Current Assignee Address: NL Amsterdam
- Agency: Gardere Wynne Sewell LLP
- Priority: EP13368024 20130820
- Main IPC: H02M3/07
- IPC: H02M3/07 ; G05F3/02 ; G06F3/16 ; H02M1/00

Abstract:
A multi level charge pump circuit may be associated with at least two power supplies, and may provide at least four levels of positive and negative voltage. The multi level charge pump may include first and second fly capacitors, and first and second tank capacitors. A plurality of PMOS transistors and NMOS transistors may allow generation of two high voltage levels and two low voltage levels for the multi level charge pump, the low voltage levels being derived from a charging of the two fly capacitors in series. This multi level charge pump may be embodied in an audio device within a platform without a dedicated SMPS circuit.
Public/Granted literature
- US20150055805A1 MULTIPLE LEVEL CHARGE PUMP GENERATING VOLTAGES WITH DISTINCT LEVELS AND ASSOCIATED METHODS Public/Granted day:2015-02-26
Information query
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