Booster and motor controller
A voltage sensor ( 101 ) is connected to output terminals (P, N) of a booster. The voltage sensor ( 101 ) detects a boosted voltage, and outputs the detected voltage to a first drive controller ( 102 ). The first drive controller ( 102 ) outputs a control signal to a variable resistor ( 22 ) indicating a gate resistance obtained on the basis of the boosted voltage. The variable resistor ( 22 ) is controlled to have the specified gate resistance in response to the received control signal.
1. A booster for raising a power supply voltage to output a boosted voltage, said booster comprising:
a voltage sensor configured to detect said boosted voltage; and
a first driver configured to drive a gate of a first switching element,
wherein said first driver includes a first switching speed controller configured to control an input current to said first switching element to control a switching speed of said first switching element in response to the output of said voltage sensor.
2. The booster according to claim 1 ,
wherein said first switching speed controller includes a first variable resistor connected to said gate of said first switching element, and
wherein said first variable resistor has a resistance which is controlled in response to said output of said voltage sensor.
3. A motor controller, comprising:
a booster configured to raise a power supply voltage to output a boosted voltage by driving a first switching element, said booster comprising
a voltage sensor configured to detect said boosted voltage, and
a first driver configured to drive a gate of said first switching element,
wherein said first driver includes a first switching speed controller configured to control an input current to said first switching element to control a switching speed of said first switching element in response to the output of said voltage sensor; and
an inverter configured to convert said boosted voltage into an alternating voltage by driving a second switching element, said inverter comprising a second driver configured to drive a gate of said second switching element,
wherein said second driver includes a second switching speed controller configured to control a switching speed of said second switching element in response to said output of said voltage sensor.
4. The motor controller according to claim 3 ,
wherein said second switching speed controller includes a variable resistor connected to said gate of said second switching element, and
wherein said variable resistor has a resistance which is controlled in response to said output of said voltage sensor.
5. A booster for raising a power supply voltage to output a boosted voltage, said booster comprising:
a high order system configured to output a target boosted voltage of a predetermined level; and
a first driver configured to drive a gate of said a first switching element,
wherein said first driver includes a first switching speed controller configured to control an input current to said first switching element to control a switching speed of said first switching element in response to the output of said high order system.
6. The booster according to claim 5 ,
wherein said first switching speed controller includes a first variable resistor connected to said gate of said first switching element, and
wherein said first variable resistor has a resistance which is controlled in response to said output of said high order system.
7. A motor controller, comprising:
a booster configured to raise a power supply voltage to output a boosted voltage by driving a first switching element, said booster comprising
a high order system configured to output a target boosted voltage of a predetermined level, and
a first driver configured to drive a gate of said first switching element,
wherein said first driver includes a first switching speed controller configured to control an input current to said first switching element to control a switching speed of said first switching element in response to the output of said high order system; and
an inverter configured to convert said boosted voltage into an alternating voltage by driving a second switching element, said inverter comprising a second driver configured to drive a gate of said second switching element,
wherein said second driver includes a second switching speed controller configured to control a switching speed of said second switching element in response to said output of said high order system.
8. The motor controller according to claim 7 ,
wherein said second switching speed controller includes a variable resistor connected to said gate of said second switching element, and
wherein said variable resistor has a resistance which is controlled in response to said output of said high order system.
9. A booster for raising a power supply voltage to output a boosted voltage, said booster comprising:
a high order system configured to output a target boosted voltage of a predetermined level;
a boost-responsive compensation device configured to estimate a change in said boosted voltage over time in response to the output of said high order system, and to output a resultant estimated voltage with respect to time; and
a first driver configured to drive a gate of a first switching element,
wherein said first driver includes a first switching speed controller configured to control an input current to said first switching element to control a switching speed of said first switching element in response to the output of said boost-responsive compensation device.
10. The booster according to claim 9 ,
wherein said first switching speed controller includes a first variable resistor connected to said gate of said first switching element, and
wherein said first variable resistor has a resistance which is controlled in response to said output of said boost-responsive compensation device.
11. A motor controller, comprising:
a booster configured to raise a power supply voltage to output a boosted voltage by driving a first switching element, said booster comprising
a high order system configured to output a target boosted voltage of a predetermined level,
a boost-responsive compensation device configured to estimate a change in said boosted voltage over time in response to the output of said high order system, and to output a resultant estimated voltage with respect to time, and
a first driver configured to drive a gate of said first switching element,
wherein said first driver includes a first switching speed controller configured to control an input current to said first switching element to control a switching speed of said first switching element in response to the output of said boost-responsive compensation device; and
an inverter configured to convert said boosted voltage into an alternating voltage by driving a second switching element, said inverter comprising a second driver configured to drive a gate of said second switching element,
wherein said second driver includes a second switching speed controller configured to control a switching speed of said second switching element in response to said output of said boost-responsive compensation device.
12. The motor controller according to claim 11 ,
wherein said second switching speed controller includes a variable resistor connected to said gate of said second switching element, and
wherein said variable resistor has a resistance which is controlled in response to said output of said boost-responsive compensation device.
13. A motor controller, comprising:
a booster configured to raise a power supply voltage to output a boosted voltage;
an inverter configured to convert said boosted voltage into an alternating voltage by driving a switching element; and
a voltage sensor configured to detect said boosted voltage,
said inverter comprising a driver configured to drive a gate of said switching element,
wherein said driver includes a switching speed controller configured to control an input current to said switching element to control a switching speed of said switching element in response to the output of said voltage sensor.
14. The motor controller according to claim 13 ,
wherein said switching speed controller includes a variable resistor connected to said gate of said switching element, and
wherein said variable resistor has a resistance which is controlled in response to said output of said voltage sensor.
15. A motor controller, comprising:
a booster configured to raise a power supply voltage to output a boosted voltage;
an inverter configured to convert said boosted voltage into an alternating voltage by driving a switching element; and
a high order system configured to output a target boosted voltage of a predetermined level,
said inverter comprising a driver configured to drive a gate of said switching element,
wherein said driver includes a switching speed controller configured to control an input current to said switching element to control a switching speed of said switching element in response to the output of said high order system.
16. The motor controller according to claim 15 ,
wherein said switching speed controller includes a variable resistor connected to said gate of said switching element, and
wherein said variable resistor has a resistance which is controlled in response to said output of said high order system.
17. A motor controller, comprising:
a booster configured to raise a power supply voltage to output a boosted voltage;
an inverter configured to convert said boosted voltage into an alternating voltage by driving a switching element;
a high order system configured to output a target boosted voltage of a predetermined level; and
a boost-responsive compensation device configured to estimate a change in said boosted voltage over time in response to the output of said high order system, and to output a resultant estimated voltage with respect to time,
said inverter comprising a driver configured to drive a gate of said switching element,
wherein said driver includes a switching speed controller configured to control an input current to said switching element to control a switching speed of said switching element in response to the output of said boost-responsive compensation device.
18. The motor controller according to claim 17 ,
wherein said switching speed controller includes a variable resistor connected to said gate of said switching element, and
wherein said variable resistor has a resistance which is controlled in response to said output of said boost-responsive compensation device.