Patent ID: 9287771
Filing Date: 2016-03-15
CPC Classification: G05F,G06F,H02J,H02M

Claim Text:
1. A series regulator on an electronic control unit for an automotive vehicle which is connected to an in-vehicle power supply for supplying a voltage to a microcomputer, the series regulator comprising: a first capacitor that has one end connected to a positive electrode of the in-vehicle power supply and the other end connected to a negative electrode of the in-vehicle power supply; a second capacitor that has one end connected to an input terminal of the microcomputer and the other end connected to the negative electrode of the in-vehicle power supply; a transistor that has an input terminal connected to the one end of the first capacitor and an output terminal connected to the input terminal of the microcomputer; a resistive element that has one end connected to an output control terminal of the transistor; a third capacitor that has one end connected to the other end of the resistive element and the other end connected to the negative electrode of the in-vehicle power supply; and an output control circuit that has an output connected between the output control terminal of the transistor and the resistive element, and controls driving of the transistor, wherein: the microcomputer includes a stop processor that stores information required for a subsequent start when a voltage applied between both ends of the first capacitor falls below a given voltage, wherein the transistor is a field-effect transistor (FET), and the third capacitor is connected in series to agate of the transistor.