Power convertor, an integrated, and a telecommunication device

Details Power convertor, an integrated, and a telecommunication device Power convertor, an integrated, and a telecommunication device

1998-07-16

1999-11-23

Wong, Peter S.

Electricity: power supply or regulation systems

Output level responsive

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

323283, 323277, G05F 1573, G05F 140

Patent

active

059906707

ABSTRACT:
A switched mode power convertor with a switch, a switching control device, a coil for storing energy, and a load. The switch is coupled between an input of the power convertor and the coil, and the coil is further coupled to an output of the power convertor. The switching control device has a control input and controls the switch. The switched mode power convertor further has an input current estimator which estimates the input from a quotient of a measured output power and a measured input voltage, taking into account the efficiency of the power convertor. A signal proportional to the estimated input current is supplied to the control input.

REFERENCES:
patent: 5627459 (1997-05-01), Itoyama et al.
patent: 5670866 (1997-09-01), Suzuki et al.
patent: 5675240 (1997-10-01), Fujisawa et al.
patent: 5717322 (1998-02-01), Hawkes et al.
patent: 5731694 (1998-03-01), Wilcox et al.
patent: 5747976 (1998-05-01), Wong et al.
patent: 5808455 (1998-09-01), Schartz et al.

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