Invention Grant
- Patent Title: System and method of equivalent series inductance cancellation
- Patent Title (中): 等效串联电感消除的系统和方法
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Application No.: US14087638Application Date: 2013-11-22
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Publication No.: US09190907B2Publication Date: 2015-11-17
- Inventor: Rhys S. A. Philbrick , Emil Chen , Gwilym Luff , Ruchi J. Parikh
- Applicant: INTERSIL AMERICAS LLC
- Applicant Address: US CA Milpitas
- Assignee: INTERSIL AMERICAS LLC
- Current Assignee: INTERSIL AMERICAS LLC
- Current Assignee Address: US CA Milpitas
- Agent Gary Stanford
- Main IPC: H02M3/156
- IPC: H02M3/156 ; H02M3/158 ; H02M1/00

Abstract:
An equivalent series inductance (ESL) cancel circuit for a regulator for adjusting a feedback voltage by attenuating a magnitude of a square wave ripple voltage developed on an output voltage. The regulator includes an output inductor and an output capacitor, in which the capacitor has an ESL which forms an inductive voltage divider with the output inductor causing the square wave voltage ripple. The ESL cancel circuit may include first and second current sources and a resistor device coupled between the output node and an adjust node which is further coupled to a feedback input of the regulator. The first current source applies a current proportional to the output voltage to the adjust node. The second current source selectively applies a current proportional to the input voltage of the regulator based on a state of the pulse control signal.
Public/Granted literature
- US20150061632A1 SYSTEM AND METHOD OF EQUIVALENT SERIES INDUCTANCE CANCELLATION Public/Granted day:2015-03-05
Information query
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