Motor-driven integrated circuit, motor device, and application apparatus

Patent metadata

Field	Value
Publication number	US-2018128652-A1
Application number	US-201715803116-A
Country	US
Kind code	A1
Filing date	Nov 3, 2017
Priority date	Nov 4, 2016
Publication date	May 10, 2018
Grant date	—

Abstract

A motor-driven integrated circuit comprises a multiple-time programmable memory to store a motor driven program, a memory having a capacity larger than or equal to a capacity of the multiple-time programmable memory, and a central processing unit. When the motor-driven integrated circuit is powered or reset, the central processing unit copies the driven program from the multiple-time programmable memory to the memory.

First claim

1 . A motor-driven integrated circuit, comprising:
a multiple-time programmable memory storing a motor driven program; a memory having a capacity larger than or equal to a capacity of the multiple-time programmable memory; and a central processing unit; wherein when the motor-driven integrated circuit is powered or reset, the central processing unit copies the driven program from the multiple-time programmable memory to the memory.

2 . The motor-driven integrated circuit of claim 1 , further comprising a PWM output unit; an overcurrent comparator receiving a detection signal and comparing the detection signal with a reference value; wherein when the detection signal is larger than the reference value, the PWM output unit is entered to an overcurrent protection mode under control an overcurrent protection signal output by the overcurrent comparator.

3 . The motor-driven integrated circuit of claim 2 , wherein the overcurrent comparator directly outputs the overcurrent protection signal to the PWM output unit and controls the PWM output unit to enter the overcurrent protection mode.

4 . The motor-driven integrated circuit of claim 2 , wherein the overcurrent comparator outputs the overcurrent protection signal to the central processing unit and the central processing unit controls the PWM output unit to enter the overcurrent protection mode.

5 . The motor-driven integrated circuit of claim 2 , further comprising an interrupt controller, wherein the overcurrent comparator outputs the overcurrent protection signal to the interrupt controller, the interrupt controller outputs an interrupt signal to the central processing unit, and the central processing unit controls the PWM output unit enter the overcurrent protection mode.

6 . The motor-driven integrated circuit of claim 2 , wherein when the PWM output unit is entered into the overcurrent protection mode, the PWM output unit performs one of following operations:
stopping outputting drive signal; reducing a duty of the drive signal; and stopping outputting the drive signal and resetting to output the drive signal after a preset time delay.

7 . The motor-driven integrated circuit of claim 4 , further comprising a plurality of position comparators, each position comparator receives a pole detection signal and outputs a comparison signal to the central processing unit; the central processing unit controls the PWM output unit to output the drive signal.

8 . The motor-driven integrated circuit of claim 4 , further comprising a plurality of operation amplifiers, each operation amplifier receives a current flowing through a winding, the central processing unit obtains a rotation speed according to the current.

9 . The motor-driven integrated circuit of claim 7 , further comprising a timer, wherein when a jumping edge of a pole detection signal is detected, the position comparator outputs a timing interrupt signal to the timer, a time is recorded by, and a rotation speed is obtained according to a time difference between two adjacent edges.

10 . The motor-driven integrated circuit of claim 4 , further comprising a shifter connected to the central processing unit via a bus.

11 . A motor device, comprising a motor and a motor-driven integrated circuit of claim 1 .

12 . An application apparatus, comprising a motor device of claim 11 .

13 . The application apparatus of claim 12 , wherein the application apparatus is one of a pump, a fan, a household appliance, and a vehicle.

Assignees

• Johnson Electric Sa

Inventors

• Sun Chiping
• Wang Qiubao
• Wong Ken
• Wang Enhui
• Jiang Haibo
• Jiang Yunlong

Classifications

• F04D13/06

  the pump being electrically driven · CPC title

• G05B11/28

  using pulse-height modulation; using pulse-width modulation · CPC title

• G01D5/24409 Primary

  Interpolation using memories · CPC title

• H02P6/17

  and for generating speed information · CPC title

• G01D5/145

  influenced by the relative movement between the Hall device and magnetic fields (see G01R33/06) · CPC title