Invention Grant
- Patent Title: Balancing techniques and circuits for charge pumps
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Application No.: US15465487Application Date: 2017-03-21
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Publication No.: US10468978B2Publication Date: 2019-11-05
- Inventor: Xu Zhang , Jian Li , San Hwa Chee
- Applicant: Linear Technology Corporation
- Applicant Address: US CA Milpitas
- Assignee: Linear Technology Corporation
- Current Assignee: Linear Technology Corporation
- Current Assignee Address: US CA Milpitas
- Agency: Schwegman Lundberg & Woessner, P.A.
- Main IPC: H02M3/07
- IPC: H02M3/07 ; H02M1/36 ; H02M1/08

Abstract:
Methods and systems of pre-balancing a switched capacitor converter are provided. A first comparator includes a positive input configured to receive a voltage across an output capacitor and a negative input configured to receive a first hysteresis voltage. A second comparator includes a positive input configured to receive a voltage across an input capacitor of the switched capacitor converter and a negative input configured to receive a second hysteresis voltage. A first current source is coupled between the output capacitor and GND and is configured to discharge the output capacitor upon determining that the voltage across the output capacitor is above a tolerance provided by the first hysteresis voltage. A second current source is coupled between the input capacitor and GND and is configured to discharge the input capacitor upon determining that the voltage across the input capacitor is above a tolerance provided by the second hysteresis voltage.
Public/Granted literature
- US20180019669A1 Balancing Techniques and Circuits for Charge Pumps Public/Granted day:2018-01-18
Information query
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