- 专利标题: Voltage regulator having circuitry responsive to load transients
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申请号: US17248814申请日: 2021-02-09
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公开(公告)号: US11347248B2公开(公告)日: 2022-05-31
- 发明人: Jiri Matyscak
- 申请人: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
- 申请人地址: US AZ Phoenix
- 专利权人: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
- 当前专利权人: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC
- 当前专利权人地址: US AZ Phoenix
- 代理机构: Brake Hughes Bellermann LLP
- 主分类号: G05F1/56
- IPC分类号: G05F1/56 ; G05F1/565 ; G05F1/46 ; G05F1/445
摘要:
A load coupled to a linear voltage regulator may create a load transient so that an output of the voltage regulator is temporarily raised to an elevated level above a regulated level. Without compensation, the linear voltage regulator may respond by turning a pass transistor completely OFF thereby losing regulation and allowing a compensation capacitor to become charged in a polarization opposite to one required for regulation. If a subsequent load transient (i.e., back-to-back load transient) is generated while the linear voltage regulator is in this condition, a large spike in the output may occur as the voltage regulator recharges the pass transistor turns back ON and as the compensation capacitor recharges. Disclosed herein is a linear voltage regulator with transient compensation circuitry to prevent the scenario described above and reduce the spike in the output.
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