Power supply circuit
First Claim
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1. A power supply circuit, especially for a microcontroller of a transmission control, comprising:
- a first output to provide a first output voltage,a second output to provide a second output voltage, wherein the first output voltage and the second output voltage being different,an adjusting unit for setting the first output voltage and the second output voltage, anda first regulator for limiting the voltage difference between the first output voltage and the second output voltage by regulating the voltage difference between the first and second output voltages.
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Abstract
A power supply circuit (1), particularly for a microcontroller of a transmission control unit, comprises a first output (3) supplying a first output voltage (UOUT1) and a second output (4) supplying a second output voltage (UOUT2), the first output voltage (UOUT1) being different from the second output voltage (UOUT2). The power supply circuit (1) also comprises a unit (OP1, T2, OP2, T3) adjusting the first (UOUT1) and second output voltage (UOUT2) and a controller (OP3-OP5, T2, T3) limiting the voltage difference between the first (UOUT1) and second output voltage (UOUT2).
13 Citations
19 Claims
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1. A power supply circuit, especially for a microcontroller of a transmission control, comprising:
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a first output to provide a first output voltage, a second output to provide a second output voltage, wherein the first output voltage and the second output voltage being different, an adjusting unit for setting the first output voltage and the second output voltage, and a first regulator for limiting the voltage difference between the first output voltage and the second output voltage by regulating the voltage difference between the first and second output voltages. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A power supply circuit for a microcontroller of a transmission control, said circuit comprising:
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a first output to provide a first output voltage; a second output to provide a second output voltage, wherein the first output voltage and the second output voltage are different; an adjusting unit for setting the first output voltage and the second output voltage; a first regulator for limiting the voltage difference between the first output voltage and the second output voltage by regulating the voltage difference between the first and second output voltages; wherein the first regulator comprises a comparator with a first input and a second input, with the first input of the comparator being connected to the first output while the second input of the comparator is connected to the second output; and for low-resistance connection of the first output to the second output at least one controllable switching element is provided, with the comparator being connected on the output side with the switching element. - View Dependent Claims (12, 13, 14)
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15. A power supply circuit for a microcontroller of a transmission control, said circuit comprising:
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a first voltage control circuit for providing a first output voltage at a first output, a second voltage control circuit for providing a second output voltage at a second output, wherein the first output voltage and the second output voltage differ, a comparator coupled with the first and second output voltage and with the first and second control circuit for limiting the voltage difference between the first output voltage and the second output voltage by controlling the first and second voltage control circuits to regulate the voltage difference between the first and second output voltages; and at least one controllable switching element for low-resistance connection of the first output to the second output, the comparator being connected on the output side with the switching element. - View Dependent Claims (16, 17, 18, 19)
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Specification