Current detector circuit and current-mode DC-DC converter...

Details Current detector circuit and current-mode DC-DC converter... Current detector circuit and current-mode DC-DC converter...

2007-03-05

2010-02-09

Han, Jessica (Department: 2838)

Electricity: power supply or regulation systems

Self-regulating

Using a three or more terminal semiconductive device as the...

C323S316000, C323S907000

Reexamination Certificate

active

07659706

ABSTRACT:
A current detector circuit for detecting a load current flowing through a load includes a first series circuit having a first element and the load connected in series, a second series circuit having a second element and a resistor connected in series, the second element having a temperature characteristic equal to the temperature characteristic of the resistance of the first element, a power supply configured to supply voltage to the first series circuit and the second series circuit, and a control circuit configured to control the voltage drop across the second element so that the voltage drop across the second element is equal to the voltage drop across the first element. A current detection signal corresponding to the load current is generated based on a current flowing through the second element.

REFERENCES:
patent: 5717322 (1998-02-01), Hawkes et al.
patent: 5825234 (1998-10-01), Sung et al.
patent: 6424131 (2002-07-01), Yamamoto et al.
patent: 6937001 (2005-08-01), Ueda
patent: 7336122 (2008-02-01), Ko et al.
patent: 2000-307402 (2000-11-01), None
patent: 2002-26707 (2002-01-01), None

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