Inverted circuit overcurrent protection device and hybrid integrated circuit device with the same incorporated
First Claim
1. A hybrid integrated circuit device with an overcurrent protection circuit, comprising:
- a plurality of switching elements,a drive circuit for driving the switching elements,a control circuit which generates a control signal to be inputted into the drive circuit to control a load,an overcurrent detection resistor connected to the switching elements,a detection voltage amplifier,voltage dividing resistors,an overcurrent detection circuit which compares a divided detection voltage with a reference voltage for carrying out an overcurrent protection,a hybrid integrated circuit comprising a plurality of connection pads, anda current detection terminal;
wherein, in the vicinity of said current detection terminal, a first pad connected to receive a detection voltage from said overcurrent detection resistor, a second pad is connected to receive a detection voltage from said amplifier, and a third pad is connected to said voltage dividing resistors.
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Accused Products
Abstract
An inverter circuit overcurrent protection device in which an overcurrent detection resistor (Rs) is incorporated in a hybrid integrated circuit, in which a detection voltage from the overcurrent detection resistor (Rs) is divided by voltage dividing resistors (R1 and R2) and is compared with a reference voltage in an overcurrent detection circuit, for carrying out an overcurrent protection, and an external resistor is connected in series or in parallel with one of the voltage dividing resistors (R1 and R2) to change a division ratio so that the level of overcurrent protection can be adjusted; and an embodiment wherein, in the vicinity of a current detection terminal, a first pad (P1) is connected to a detection voltage from the overcurrent detection resistance, a second pad (P2) is connected to a detection voltage from the amplifier, and a third pad (P3) is connected to the voltage dividing resistors, and a bonding wire (10) is connected between the current detection terminal one of said pads, to select one of a plurality of overcurrent protection devices.
19 Citations
7 Claims
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1. A hybrid integrated circuit device with an overcurrent protection circuit, comprising:
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a plurality of switching elements, a drive circuit for driving the switching elements, a control circuit which generates a control signal to be inputted into the drive circuit to control a load, an overcurrent detection resistor connected to the switching elements, a detection voltage amplifier, voltage dividing resistors, an overcurrent detection circuit which compares a divided detection voltage with a reference voltage for carrying out an overcurrent protection, a hybrid integrated circuit comprising a plurality of connection pads, and a current detection terminal; wherein, in the vicinity of said current detection terminal, a first pad connected to receive a detection voltage from said overcurrent detection resistor, a second pad is connected to receive a detection voltage from said amplifier, and a third pad is connected to said voltage dividing resistors. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification