Invention Grant
- Patent Title: Method of valley inductance current polarity detection in a pulse width modulated circuit with an inductive charge
- Patent Title (中): 具有感应电荷的脉宽调制电路中的谷值电感电流极性检测方法
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Application No.: US14306489Application Date: 2014-06-17
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Publication No.: US09459311B2Publication Date: 2016-10-04
- Inventor: Vratislav Michal
- 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: EP13305875 20130625
- Main IPC: G01R31/28
- IPC: G01R31/28 ; H02M3/156 ; H02M3/158 ; G01R19/00 ; G01R19/14 ; G01R19/165 ; H02M1/00 ; G01R31/40
Abstract:
A valley inductance current polarity change in a pulse width modulated circuit charged with an inductive charge is detected by comparing respective times that a first output of the circuit charged with an inductive charge and a second output of a pulse width modulated reference circuit with no inductive charge reach an output level. Responsive thereto, control over operation of the pulse width modulated circuit charged with an inductive charge is made with respect to switching to a pulse skipping mode of operation or keeping the pulse width modulation mode of operation.
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