发明名称 |
INDUCTOR-BASED CURRENT SENSING |
摘要 |
A circuit (100) for sensing a current in an inductor (102) is described. Integrator (104,106) circuitry is operable to generate a first signal representing an integration of a voltage across the inductor (102). Comparison circuitry (110,112) is operable to generate a reset signal each time the first signal reaches either a positive or negative threshold. The reset signal is for resetting the integrator (104,106) circuitry. Logic circuitry is operable to generate a count direction signal indicating which of the positive and negative thresholds was reached to generate the reset signal. Counter circuitry (120) is operable to increment or decrement a count representing the current in the inductor (102) in response to the reset and count direction signals. |
申请公布号 |
WO2005050828(A3) |
申请公布日期 |
2007.01.04 |
申请号 |
WO2004US38358 |
申请日期 |
2004.11.16 |
申请人 |
TRIPATH TECHNOLOGY, INC.;MAZDA, BABAK |
发明人 |
MAZDA, BABAK |
分类号 |
G05F1/40;G01R15/18;G01R19/00;G01R19/25;H03F |
主分类号 |
G05F1/40 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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