- 专利标题: Supply tracking delay element in multiple power domain designs
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申请号: US15676752申请日: 2017-08-14
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公开(公告)号: US10833664B2公开(公告)日: 2020-11-10
- 发明人: Greg M. Hess , Hemangi U. Gajjewar , Sachmanik Cheema
- 申请人: Apple Inc.
- 申请人地址: US CA Cupertino
- 专利权人: Apple Inc.
- 当前专利权人: Apple Inc.
- 当前专利权人地址: US CA Cupertino
- 代理机构: Meyertons, Hood, Kivlin, Kowert & Goetzel, P.C.
- 主分类号: H03K5/159
- IPC分类号: H03K5/159 ; H03K19/0175 ; H03K5/00 ; G06F30/30
摘要:
An apparatus for delaying a signal transition is disclosed. The apparatus includes a first circuit coupled to a first power supply signal and a second, different power supply signal. The first circuit may be configured to, based on a voltage level of a logic signal, sink a current from an intermediate circuit node. A value of the current may be based upon a voltage level of the second different power supply signal. The apparatus also includes a second circuit coupled to the first power supply signal. The second circuit may be configured to generate an output signal based upon a voltage level of the intermediate circuit node. An amount of time between a transition of the logic signal and a corresponding transition of the output signal may be based on an amount of the current.
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