Invention Grant
- Patent Title: Power converters having varied switching frequencies
- Patent Title (中): 功率转换器具有不同的开关频率
-
Application No.: US12750297Application Date: 2010-03-30
-
Publication No.: US08228047B2Publication Date: 2012-07-24
- Inventor: Li Li , Ronil D. Patel
- Applicant: Li Li , Ronil D. Patel
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Fish & Richardson P.C.
- Main IPC: G05F1/563
- IPC: G05F1/563
Abstract:
Systems and techniques for performing power conversion operations in a portable device are used to convert an input voltage to a voltage at an output. The conversion operations use a two-stage conversion to convert the input voltage to a first voltage and to convert the first voltage to a second voltage. A switching frequency is altered with changes in the input voltage. The switching frequency is selected based on the input voltage level and/or to maintain a substantially consistent ripple at the output, which can correspond to the first voltage and/or the second voltage.
Public/Granted literature
- US20100181832A1 POWER CONVERTERS HAVING VARIED SWITCHING FREQUENCIES Public/Granted day:2010-07-22
Information query
IPC分类:
