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US 2003/0156439 A1Published application
Drive circuit
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorsAkira Ohmichi, Keiichiro Numakura
Life of this patent
Estimating the term…
Abstract
A drive circuit includes a totem-pole type output stage including a top arm and a bottom arm, a pre-drive circuit including a top arm driver and a bottom arm driver, and a power supply voltage (VCC) boosting power supply circuit. The VCC boosting power supply circuit includes a top arm driver boosting power supply circuit that boosts the top arm and a bottom arm driver boosting power supply circuit that boosts a voltage of a VCC power supply and outputs a boosted voltage.
Claims48
A drive circuit comprising:
- a drive circuit power supply;
- a totem-pole type output stage including a top arm and a bottom arm;
- a pre-drive circuit including
- a top arm driver that drives the top arm, and
- a bottom arm driver that drives the bottom arm;
- and
- a power supply voltage boosting power supply circuit including
- a top arm driver boosting power supply circuit that boosts the top arm, and
- a bottom arm driver boosting power supply circuit that boosts a voltage of a power supply voltage power supply and outputs a boosted voltage.
6 more elements
A drive circuit comprising:
- a drive circuit power supply;
- a totem-pole type output stage including a top arm and a bottom arm;
- a pre-drive circuit including
- a top arm driver that drives the top arm, and
- a bottom arm driver that drives the bottom arm;
- and
- a pre-drive power supply circuit including
- a top arm driver boosting power supply circuit that boosts the top arm,
- a battery voltage boosting power supply circuit that boosts a voltage of the drive circuit power supply and outputs a boosted voltage, and
- a bottom arm driver constant voltage circuit.
7 more elements
A drive circuit comprising:
- a drive circuit power supply;
- a totem-pole type output stage including a top arm and a bottom arm;
- a pre-drive circuit including
- a top arm driver that drives the top arm, and
- a bottom arm driver that drives the bottom arm;
- and
- a pre-drive power supply circuit including
- a top arm driver boosting power supply circuit that boosts the top arm,
- a battery voltage boosting power supply circuit that boosts a voltage of the drive circuit power supply and outputs a boosted voltage,
- a bottom arm driver constant voltage circuit, and
- a boosted power supply voltage clamp circuit that prevents an output of the battery voltage boosting power supply circuit from rising in voltage.
8 more elements
A drive circuit comprising:
- a drive circuit power supply;
- a totem-pole type output stage including a top arm and a bottom arm;
- a pre-drive circuit including
- a top arm driver that drives the top arm, and
- a bottom arm driver that drives the bottom arm;
- and
- a pre-drive power supply circuit including
- a top arm driver boosting power supply circuit that boosts the top arm,
- a battery voltage boosting power supply circuit that boosts a voltage of the drive circuit power supply and outputs a boosted voltage,
- a bottom arm driver constant voltage circuit,
- a boosted power supply voltage monitor circuit that monitors a voltage rise of an output of the battery voltage boosting power supply circuit, and a CLK controller that controls a clock signal to be supplied to the battery voltage boosting power supply circuit according to an output signal of the boosted power supply voltage monitor circuit.
8 more elements
A drive circuit comprising:
- a drive circuit power supply;
- a totem-pole type output stage including a top arm and a bottom arm;
- a pre-drive circuit including
- a top arm driver that drives the top arm, and
- a bottom arm driver that drives the bottom arm;
- and
- a pre-drive power supply circuit including
- a top arm driver boosting power supply circuit that boosts the top arm,
- a battery voltage boosting power supply circuit that boosts a voltage of the drive circuit power supply and outputs a boosted voltage,
- a bottom arm driver constant voltage circuit,
- a boosted power supply voltage monitor circuit that monitors a voltage rise of an output of the battery voltage boosting power supply circuit, and
- a CLK controller that controls a clock signal to be supplied to the top arm driver boosting power supply circuit according to an output signal of the boosted power supply voltage monitor circuit.
9 more elements
A drive circuit comprising:
- a drive circuit power supply;
- a totem-pole type output stage including a top arm and a bottom arm;
- a pre-drive circuit including
- a top arm driver that drives the top arm, and
- a bottom arm driver that drives the bottom arm;
- and
- a pre-drive power supply circuit including
- a top arm driver boosting power supply circuit that boosts the top arm,
- a battery voltage boosting power supply circuit that boosts a voltage of the drive circuit power supply and outputs a boosted voltage,
- a bottom arm driver constant voltage circuit, a boosted power supply voltage monitor circuit that monitors a voltage rise of an output of the battery voltage boosting power supply circuit,
- a filter circuit, and
- a CLK controller that controls a clock signal to be supplied to the battery voltage boosting power supply circuit according to an output signal of the filter circuit.
9 more elements
A drive circuit comprising:
- a drive circuit power supply;
- a totem-pole type output stage including a top arm and a bottom arm;
- a pre-drive circuit including
- a top arm driver that drives the top arm, and
- a bottom arm driver that drives the bottom arm;
- and
- a pre-drive power supply circuit including
- a top arm driver boosting power supply circuit that boosts the top arm,
- a variable voltage boosting power supply circuit that boosts a voltage of the drive circuit power supply and outputs a boosted voltage and that has a switchover terminal,
- a bottom arm driver constant voltage circuit,
- a bottom arm driver power supply voltage monitor circuit that outputs a signal to the switchover terminal according to an output of the bottom arm driver constant voltage circuit in order to change an output capability of the variable voltage boosting power supply circuit,
- a boosted power supply voltage monitor circuit that monitors a voltage rise of an output of the variable voltage boosting power supply circuit,
- a filter circuit, and
- a CLK controller that controls a clock signal to be supplied to the variable voltage boosting power supply circuit according to an output signal of the filter circuit.
11 more elements
A drive circuit comprising:
- a drive circuit power supply;
- a totem-pole type output stage including a top arm and a bottom arm;
- a pre-drive circuit including
- a top arm driver that drives the top arm, and
- a bottom arm driver that drives the bottom arm;
- and
- a pre-drive power supply circuit including
- a top arm driver boosting power supply circuit that boosts the top arm,
- a variable voltage boosting power supply circuit that boosts a voltage of the drive circuit power supply and outputs a boosted voltage and that has a switchover terminal,
- a bottom arm driver constant voltage circuit,
- a boosted power supply voltage monitor circuit that monitors a voltage rise of an output of the variable voltage boosting power supply circuit and outputs a signal to the switchover terminal according to an output of the bottom arm driver constant voltage circuit in order to change an output capability of the variable voltage boosting power supply circuit,
- a filter circuit, and
- a CLK controller that controls a clock signal to be supplied to the variable voltage boosting power supply circuit according to an output signal of the filter circuit.
10 more elements
A drive circuit comprising:
- a drive circuit power supply;
- a totem-pole type output stage including a top arm and a bottom arm;
- a pre-drive circuit including
- a top arm driver that drives the top arm, and
- a bottom arm driver that drives the bottom arm;
- and
- a pre-drive power supply circuit including
- a top arm driver boosting power supply circuit that boosts the top arm,
- a battery voltage boosting power supply circuit that boosts a voltage of the drive circuit power supply and outputs a boosted voltage,
- a bottom arm driver constant voltage circuit,
- a boosted power supply voltage monitor circuit that monitors a voltage rise of an output of the battery voltage boosting power supply circuit,
- a filter circuit,
- a CLK controller that controls a clock signal to be supplied to the battery voltage boosting power supply circuit according to an output signal of the filter circuit, and
- a top arm driver boosting power supply voltage monitor circuit that receives an output of the top arm driver boosting power supply circuit and changes an output capability of the top arm driver boosting power supply circuit.
11 more elements
A drive circuit comprising:
- a drive circuit power supply;
- a totem-pole type output stage including a top arm and a bottom arm;
- a pre-drive circuit including
- a top arm driver that drives the top arm, and
- a bottom arm driver that drives the bottom arm;
- and
- a pre-drive power supply circuit including
- a top arm driver boosting power supply circuit that boosts the top arm,
- a variable voltage boosting power supply circuit that boosts a voltage of the drive circuit power supply and outputs a boosted voltage and that has a switchover terminal,
- a bottom arm driver constant voltage circuit,
- a boosted power supply voltage monitor circuit that monitors a voltage rise of an output of the variable voltage boosting power supply circuit and outputs a signal to the switchover terminal in order to change an output capability of the variable voltage boosting power supply circuit,
- a filter circuit,
- a CLK controller that controls a clock signal to be supplied to the variable voltage boosting power supply circuit according to an output signal of the filter circuit, and
- a top arm driver power supply voltage monitor circuit that receives an output of the top arm driver boosting power supply circuit and changes an output capability of the top arm driver boosting power supply circuit.
11 more elements
A drive circuit comprising:
- a drive circuit power supply;
- a totem-pole type output stage including a top arm and a bottom arm;
- a pre-drive circuit including
- a top arm driver that drives the top arm, and
- a bottom arm driver that drives the bottom arm;
- and
- a pre-drive power supply circuit including
- a top arm driver boosting power supply circuit that boosts the top arm,
- a battery voltage boosting power supply circuit that boosts a voltage of the drive circuit power supply and outputs a boosted voltage,
- a bottom arm driver constant voltage circuit,
- a boosted power supply voltage monitor circuit that monitors a voltage rise of an output of the battery voltage boosting power supply circuit,
- a filter circuit,
- a CLK controller that controls a clock signal to be supplied to the battery voltage boosting power supply circuit according to an output signal of the filter circuit, and
- a top arm driver power supply voltage monitor circuit that receives an output of the top arm driver boosting power supply circuit and changes an output capability of the top arm driver.
11 more elements
A drive circuit comprising:
- a first drive circuit power supply;
- a second drive circuit power supply;
- a totem-pole type output stage including a top arm and a bottom arm;
- a pre-drive circuit including
- a top arm driver that drives the top arm, and
- a bottom arm driver that drives the bottom arm;
- and
- a pre-drive power supply circuit including
- a top arm driver boosting power supply circuit that boosts the top arm,
- a battery voltage boosting power supply circuit that boosts a voltage of the first drive circuit power supply and outputs a boosted voltage,
- and a bottom arm driver constant voltage circuit,
- wherein the second drive circuit power supply is connected to the pre-drive circuit.
9 more elements
A drive circuit comprising:
- a drive circuit power supply;
- a voltage boosting power supply circuit;
- a rush current control switch provided between the drive circuit power supply and the voltage boosting power supply circuit;
- and
- a boosted output voltage monitor circuit that monitors an output of the voltage boosting power supply circuit and outputs a signal to the rush current control switch when the output of the voltage boosting power supply circuit is lower than a fixed voltage.
2 more elements
A drive circuit comprising:
- a drive circuit power supply;
- a voltage boosting power supply circuit;
- a rush current control switch provided between the drive circuit power supply and the voltage boosting power supply circuit;
- and
- a boosted output current monitor circuit that monitors an output current of the voltage boosting power supply circuit and outputs a signal to the rush current control switch when the output current of the voltage boosting power supply circuit is larger than a fixed current.
2 more elements
A drive circuit comprising:
- a drive circuit power supply;
- a voltage boosting power supply circuit;
- a rush current control switch provided between the drive circuit power supply and the voltage boosting power supply circuit;
- and
- a delay circuit that outputs a signal to the rush current control switch when the power supply is started.
2 more elements
A drive circuit comprising:
- a drive circuit power supply;
- a voltage boosting power supply circuit;
- a rush current control switch provided between the drive circuit power supply and the voltage boosting power supply circuit;
- and
- a power-on reset circuit that is provided outside the drive circuit and outputs a signal,
- wherein the rush current control switch is controlled based on the signal output of the power-on reset circuit when the power supply is started.
3 more elements
Dependencies are inferred from the claim text.