发明名称 |
CURRENT MEASUREMENT IN SWITCHED MODE POWER SUPPLY |
摘要 |
A method of determining a current in a switched mode power supply. The method comprises: storing values representing at least one pre-calculated matrix A; receiving measured current values; and using the stored values representing the matrix A and the received current values to calculate a respective initial value for each of the coefficients of the line and for each measured current value: calculating an estimated current using the equation of the line and the calculated initial values of the coefficients; determining a difference between the measured current value and the estimated current value to generate a difference value, and comparing the difference value against a threshold and, if the difference value is greater than the threshold, calculating updated values of the coefficients using stored values representing matrix A and difference value. A value for the current in the switched mode power supply is determined using the updated values of the coefficients. |
申请公布号 |
EP2438671(A1) |
申请公布日期 |
2012.04.11 |
申请号 |
EP20090779617 |
申请日期 |
2009.06.03 |
申请人 |
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) |
发明人 |
HOLMBERG, TORBJOERN;KARLSSON, MAGNUS |
分类号 |
H02M3/156;G01R19/165;G01R31/30;H02M3/335 |
主分类号 |
H02M3/156 |
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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