US 10,874,009 B2 · Load driving apparatus

Abstract

A load driving apparatus receives an input voltage from a power supply, and supplies electric power to a load under processor control. The processor outputs first and second signals via first and second pins in a conjunction such that they are negated when the load is instructed to suspend operation. An output circuit supplies electric power to the load. A protection switch is provided on a driving path that extends from the power supply to the load and returns to the power supply. When the first signal is asserted (negated), a control circuit sets the output circuit to an operation state (suspension state). The control circuit turns on the protection switch on assertion of the second signal, and turns it off on negation of this signal.

Claims14

Dependent claims

A load driving apparatus structured to receive an input voltage from a power supply, and to supply an electric power to a load under a control operation of a processor, wherein the processor outputs a first signal and a second signal in conjunction via a first pin and a second pin such that the first signal and the second signal are negated when the load is instructed to suspend an operation thereof,

and wherein the load driving apparatus comprises:
an output circuit structured to supply an electric power to the load;
a protection switch provided on a driving path that extends from the power supply to the load and returns to the power supply;
and
a control circuit structured to be set to an operation state when the first signal is asserted, to be set to a suspension state when the first signal is negated, to turn on the protection switch when the second signal is asserted, and to turn off the protection switch when the second signal is negated.

2 more elements

Dependencies are inferred from the claim text.

Load driving apparatus

Life of this patent

Load driving apparatus

Life of this patent

Abstract

Claims14