Invention Grant
US09046904B2 Apparatus and method for controlling pulse frequency modulation in single-inductor dual-output power circuit
有权
用于控制单电感双输出电源电路中脉冲频率调制的装置和方法
- Patent Title: Apparatus and method for controlling pulse frequency modulation in single-inductor dual-output power circuit
- Patent Title (中): 用于控制单电感双输出电源电路中脉冲频率调制的装置和方法
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Application No.: US13768310Application Date: 2013-02-15
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Publication No.: US09046904B2Publication Date: 2015-06-02
- Inventor: Jongcheol Kim , Seung nam Park
- Applicant: Dongbu HiTek Co., Ltd.
- Applicant Address: KR
- Assignee: Dongbu Hitek Co., Ltd.
- Current Assignee: Dongbu Hitek Co., Ltd.
- Current Assignee Address: KR
- Agency: Central California IP Group, P.C.
- Agent Andrew D. Fortney
- Priority: KR10-2012-0030652 20120326
- Main IPC: G05F1/577
- IPC: G05F1/577 ; G05F1/10
Abstract:
An apparatus configured to control a pulse frequency modulation in a single-inductor dual-output power circuit. The apparatus fixes a pulse width of one of a maximum on-time pulse signal (which is used to define a maximum on-time during which a current flowing through the inductor is generated) and a minimum off-time pulse signal (which is used to define a minimum off-time during which either the boost voltage converter or the buck-boost voltage converter produces a positive voltage or a negative voltage). The apparatus adjusts a pulse width of the other pulse signal.
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