Semiconductor device, power control device and electronic system
First Claim
1. A semiconductor device configured with a single semiconductor chip comprising:
- a termination region with a ring-like shape;
a first region provided outside the termination region in which a circuit is formed to operate with a first power supply voltage with a reference voltage as the reference; and
a second region provided inside the termination region in which a circuit is formed to operate with a second power supply voltage with a floating voltage as the reference is formed,wherein the semiconductor device includes;
a high side driver formed in the second region to drive a high side transistor provided outside the semiconductor device;
a level shift circuit for converting a signal with the reference voltage as the reference into a signal with the floating voltage as the reference, and outputs to the second region;
a first transistor formed in the termination region at a position between a first power supply terminal combined with the first power supply voltage, and a second power supply terminal combined with the second power supply voltage;
a second transistor formed in the termination region at a position between the second power supply terminal and a sense node, and driven by the first power supply voltage; and
a comparator circuit formed in the first region to drive the first transistor to be ON when the voltage of the sense node is lower than the first power supply voltage, while driving the first transistor to be OFF when the voltage of the sense node is higher than the first power supply voltage,wherein the first transistor charges a capacitor provided outside the semiconductor device at a position between the second power supply terminal and the terminal combined with the floating voltage,wherein the second transistor is a depression type transistor.
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Accused Products
Abstract
In order to reduce the cost and the like of a power control device including a semiconductor device such as a driver IC, as well as an electronic system, the driver IC includes a high side driver, a level shift circuit, first and second transistors, and a comparator circuit. The first transistor is formed in a termination area. The second transistor is formed in the termination region and is driven by a first power supply voltage. The comparator circuit is formed in a first region to drive the first transistor to be ON when the voltage of a sense node is lower than the first power supply voltage, while driving the first transistor to be OFF when the voltage of the sense node is higher than the first power supply voltage. The second transistor is a depression type transistor.
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Citations
16 Claims
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1. A semiconductor device configured with a single semiconductor chip comprising:
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a termination region with a ring-like shape; a first region provided outside the termination region in which a circuit is formed to operate with a first power supply voltage with a reference voltage as the reference; and a second region provided inside the termination region in which a circuit is formed to operate with a second power supply voltage with a floating voltage as the reference is formed, wherein the semiconductor device includes; a high side driver formed in the second region to drive a high side transistor provided outside the semiconductor device; a level shift circuit for converting a signal with the reference voltage as the reference into a signal with the floating voltage as the reference, and outputs to the second region; a first transistor formed in the termination region at a position between a first power supply terminal combined with the first power supply voltage, and a second power supply terminal combined with the second power supply voltage; a second transistor formed in the termination region at a position between the second power supply terminal and a sense node, and driven by the first power supply voltage; and a comparator circuit formed in the first region to drive the first transistor to be ON when the voltage of the sense node is lower than the first power supply voltage, while driving the first transistor to be OFF when the voltage of the sense node is higher than the first power supply voltage, wherein the first transistor charges a capacitor provided outside the semiconductor device at a position between the second power supply terminal and the terminal combined with the floating voltage, wherein the second transistor is a depression type transistor. - View Dependent Claims (2, 3, 4)
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5. A power control device configured with a single package comprising:
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a reference terminal combined with a reference voltage; a first power supply terminal combined with a first power supply voltage; a second power supply terminal combined with a second power supply voltage; a third power supply terminal combined with a third power supply voltage with a voltage value higher than the first power supply voltage; a load drive terminal; a high side transistor provided between the third power supply terminal and the load drive terminal; a low side transistor provided between the load drive terminal and the reference terminal; and a semiconductor chip for driving the high side transistor and the low side transistor, wherein the semiconductor chip includes; a termination region with a ring-like shape; a first region provided outside the termination region in which a circuit is formed to operate with a first power supply voltage with the reference voltage as the reference; and a second region provided inside the termination region in which a circuit is formed to operate with the second power supply voltage with the voltage of the load drive terminal as the reference, wherein the semiconductor chip includes; a low side driver formed in the first region to drive the low side transistor; a level shift circuit for converting a signal generated in the first region with the reference voltage as the reference into a signal with the voltage of the load drive terminal as the reference, and outputting to the second region; a high side driver formed in the second region to drive the high side transistor; a first transistor formed in the termination region at a position between the first power supply terminal and the second power supply terminal; a second transistor formed in the termination region at a position between the second power supply terminal and a sense node, being driven by the first power voltage; and a comparator circuit formed in the first region to drive the first transistor to be ON when the voltage of the sense node is lower than the first power supply voltage, while driving the first transistor to be OFF when the voltage of the sense node is higher than the first power supply voltage, wherein the first transistor charges a capacitor provided outside the power control device at a position between the second power supply terminal and the load drive terminal, wherein the second transistor is a depression type transistor. - View Dependent Claims (6, 7, 8, 9, 10, 11)
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12. An electronic system comprising:
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a reference terminal combined with a reference voltage; a first power supply terminal combined with a first power supply voltage; a second power supply terminal combined with a second power supply voltage; a third power supply terminal combined with a third power supply voltage having a voltage value higher than the first power supply voltage; a load drive terminal; a high side transistor provided between the third power supply terminal and the load drive terminal; a low side transistor provided between the load drive terminal and the reference terminal; a capacitor provided between the second power supply terminal and the load drive terminal; a semiconductor chip for driving the high side transistor and the low side transistor; and a load circuit combined with the load drive terminal, wherein the semiconductor chip includes; a termination region with a ring-like shape; a first region provided outside the termination region, in which a circuit is formed to operate with the first power supply voltage with the reference voltage as the reference; and a second region provided inside the termination region, in which a circuit is formed to operate with the second power supply voltage with the voltage of the load drive terminal as the reference, wherein the semiconductor chip includes; a low side driver formed in the first region to drive the low side transistor; a level shift circuit for converting a signal generated in the first region with the reference voltage as the reference into a signal with the voltage of the load drive terminal as the reference, and outputting to the second region; a high side driver formed in the second region to drive the high side transistor; a first transistor formed in the termination region at a position between the first power supply terminal and the second power supply terminal; a second transistor formed in the termination region at a position between the second power supply terminal and a sense node, being driven by the first power supply voltage; and a comparator circuit formed in the first region to drive the first transistor to be ON when the voltage of the sense node is lower than the first power supply voltage, while driving the first transistor to be OFF when the voltage of the sense node is higher than the first power supply voltage, wherein the second transistor is a depression type transistor. - View Dependent Claims (13, 14, 15, 16)
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Specification