High current driver providing battery overload protection

Details High current driver providing battery overload protection High current driver providing battery overload protection

1994-12-27

1996-12-17

Nelms, David C.

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Current driver

327484, 327490, 327563, 327576, 34082544, G11C 800, H03K 1760, G06G 712, G08B 522

Patent

active

055857493

ABSTRACT:
A high current driver (100) for driving a high current load (110) in an electronic device powered by a battery (112) comprises a voltage reference (104) for generating a reference voltage, and a drive current controller (102, 302) responsive to a drive control signal for selectively switching the drive current controller (102, 302) from an active state for supplying current to the high current load (110), to an-inactive state for inhibiting the supply of current to the high current load (110). The drive current controller (102, 302) further controls the amount of current supplied to the high current load (110) when the battery (112) terminal voltage is substantially equal to the reference voltage. A load control element (108) is coupled to the drive current controller (102, 302) and drives the high current load (110) when the drive current controller (102, 302) is in the active state.

REFERENCES:
patent: 3810006 (1974-05-01), Vittoz
patent: 4107596 (1978-08-01), Weaver et al.
patent: 4221979 (1980-09-01), Ahmed
patent: 4396889 (1983-08-01), Arai
patent: 4631737 (1986-12-01), Davis et al.
patent: 4847520 (1989-07-01), O'Neill et al.
patent: 5128553 (1992-07-01), Nelson
patent: 5357188 (1994-10-01), Takeda et al.
patent: 5412336 (1995-05-01), Barrett, Jr. et al.
patent: 5430439 (1995-07-01), Bodet et al.

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