发明名称 |
SYSTEMS AND METHODS FOR REAL-TIME INDUCTOR CURRENT SIMULATION FOR A SWITCHING CONVERTER |
摘要 |
A switching converter having a high-side switching transistor and a low-side switching transistor and an inductor, having a circuit for generating a simulated waveform representing a sawtooth inductor current waveform. A circuit for monitoring and voltage at a switch node between the high-side and low-side transistors to determine a time during which the inductor current is increasing and a time during which the inductor current is decreasing wherein voltage across the low-side transistor when it is conducting represents a first portion of the simulated sawtooth inductor current waveform. A circuit for utilizing the time when the inductor current is increasing, the time when the inductor current is decreasing and the voltage across the low-side transistor when it is conducting to generate a portion of the simulated inductor current waveform when the high-side transistor is conducting. A method and a power supply utilizing this circuit are also disclosed. |
申请公布号 |
US2015097539(A1) |
申请公布日期 |
2015.04.09 |
申请号 |
US201414518776 |
申请日期 |
2014.10.20 |
申请人 |
Texas Instruments Incorporated |
发明人 |
Ragona Scott E.;Chen Rengang;Jauregui David |
分类号 |
H02M3/158 |
主分类号 |
H02M3/158 |
代理机构 |
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代理人 |
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主权项 |
1. In a switching converter having a high-side switching transistor and a low-side switching transistor and an inductor, a circuit for generating a simulated waveform representing a sawtooth inductor current waveform comprising:
a circuit for monitoring a voltage at a switch node between the high-side and low-side transistors to determine a time during which the inductor current is increasing and a time during which the inductor current is decreasing wherein voltage across the low-side transistor when is conducting represents a first portion of the simulated sawtooth inductor current waveform; a circuit for utilizing the time when the inductor current is increasing, the time when the inductor current is decreasing and the voltage across the low-side transistor when it is conducting to generate a portion of the simulated inductor current waveform when the high-side transistor is conducting. |
地址 |
Dallas TX US |