In one embodiment, a semiconductor device includes a reference voltage supply circuit configured to supply a first reference voltage and a second reference voltage. The device further includes a power source voltage supply circuit including a first power source voltage generator supplied with the first reference voltage and configured to generate a first power source voltage, and a second power source voltage generator supplied with the second reference voltage and configured to generate a second power source voltage, the power source voltage supply circuit being configured to supply the first power source voltage and the second power source voltage to a power source voltage line. The device further includes a voltage control circuit connected to the power source voltage line, and configured to control a value of the first reference voltage and a value the second reference voltage.

In one embodiment, a semiconductor device includes a reference voltage supply circuit configured to supply a first reference voltage and a second reference voltage. The device further includes a power source voltage supply circuit including a first power source voltage generator supplied with the first reference voltage and configured to generate a first power source voltage, and a second power source voltage generator supplied with the second reference voltage and configured to generate a second power source voltage, the power source voltage supply circuit being configured to supply the first power source voltage and the second power source voltage to a power source voltage line. The device further includes a voltage control circuit connected to the power source voltage line, and configured to control a value of the first reference voltage and a value the second reference voltage.

A resistor network with reduced area and/or improved voltage resolution and methods of designing and operating the same are provided. Generally, the resistor network includes a resistor ladder with a first number (n) of integrated resistors coupled in series between a top and a bottom contact, with one or more contacts coupled between adjacent resistors. A second number of integrated resistors is coupled in parallel between the top and bottom contacts, and a third number of integrated resistors is coupled in series between the second integrated resistors and either the top or the bottom contact. Each of the integrated resistors has a resistance of R, and a voltage developed across each resistor in the resistor ladder is equal to a voltage applied between the top and bottom contacts divided by n. Where the second number is n1, and the third number is 1, the total number of resistors is 2n.

A resistor network with reduced area and/or improved voltage resolution and methods of designing and operating the same are provided. Generally, the resistor network includes a resistor ladder with a first number (n) of integrated resistors coupled in series between a top and a bottom contact, with one or more contacts coupled between adjacent resistors. A second number of integrated resistors is coupled in parallel between the top and bottom contacts, and a third number of integrated resistors is coupled in series between the second integrated resistors and either the top or the bottom contact. Each of the integrated resistors has a resistance of R, and a voltage developed across each resistor in the resistor ladder is equal to a voltage applied between the top and bottom contacts divided by n. Where the second number is n1, and the third number is 1, the total number of resistors is 2n.

An integrated circuit (IC) comprises an output and a voltage regulator. The voltage regulator comprises an amplifier having a first input coupled to a reference voltage source and a second input coupled to the output, a first resistor coupled to the output and coupled to a ground terminal, a metal oxide semiconductor field effect transistor (MOSFET) having a gate coupled to an output of the amplifier and a drain coupled to the output, and a second resistor coupled to a source of the MOSFET and coupled to the ground terminal.

An integrated circuit (IC) comprises an output and a voltage regulator. The voltage regulator comprises an amplifier having a first input coupled to a reference voltage source and a second input coupled to the output, a first resistor coupled to the output and coupled to a ground terminal, a metal oxide semiconductor field effect transistor (MOSFET) having a gate coupled to an output of the amplifier and a drain coupled to the output, and a second resistor coupled to a source of the MOSFET and coupled to the ground terminal.

A method for operating a buck converter as a power source for electronics of a battery system, includes: operating the buck converter in a first mode in which the buck converter provides a first output voltage; receiving a first control signal; and in response to receiving the first control signal, operating the buck converter in a second mode in which the buck converter provides a second output voltage for a System Basis Chip of the battery system. The first output voltage has a first value in a range of a to b, and the second output voltage has a second value in the range of c to d, wherein b is less than c.

A method for operating a buck converter as a power source for electronics of a battery system, includes: operating the buck converter in a first mode in which the buck converter provides a first output voltage; receiving a first control signal; and in response to receiving the first control signal, operating the buck converter in a second mode in which the buck converter provides a second output voltage for a System Basis Chip of the battery system. The first output voltage has a first value in a range of a to b, and the second output voltage has a second value in the range of c to d, wherein b is less than c.

An integrated circuit (IC) comprises an output and a voltage regulator. The voltage regulator comprises an amplifier having a first input coupled to a reference voltage source and a second input coupled to the output, a first resistor coupled to the output and coupled to a ground terminal, a metal oxide semiconductor field effect transistor (MOSFET) having a gate coupled to an output of the amplifier and a drain coupled to the output, and a second resistor coupled to a source of the MOSFET and coupled to the ground terminal.

An integrated circuit (IC) comprises an output and a voltage regulator. The voltage regulator comprises an amplifier having a first input coupled to a reference voltage source and a second input coupled to the output, a first resistor coupled to the output and coupled to a ground terminal, a metal oxide semiconductor field effect transistor (MOSFET) having a gate coupled to an output of the amplifier and a drain coupled to the output, and a second resistor coupled to a source of the MOSFET and coupled to the ground terminal.