电压型霍尔电路、电子产品及汽车
By combining the Hall element with the first resistor element, a two-wire Hall circuit was achieved, solving the problem of high cost in the traditional three-wire design, reducing circuit cost and improving quality and reliability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SUZHOU ZHAOWEI DRIVE CO LTD
- Filing Date
- 2025-08-05
- Publication Date
- 2026-07-17
AI Technical Summary
Traditional voltage-type Hall effect circuits use a three-wire design, which results in higher costs.
The design employs a combination of Hall effect unit, first resistor unit, and voltage divider unit. The common terminal of the Hall effect unit and the first resistor unit is equivalent to ground pin and PWM signal output function respectively in different states, sharing the same port and reducing the number of pins.
A two-wire design for Hall effect circuits was implemented, reducing circuit design costs and improving quality and reliability by simplifying the circuit structure.
Smart Images
Figure CN224517795U_ABST
Abstract
Claims
1. A voltage-mode Hall circuit, characterized by, The device includes a Hall module, a first resistor unit, and a voltage divider unit. The Hall module includes a Hall unit and a second resistor unit. The Hall unit is electrically connected to the second resistor unit, the first resistor unit, and the voltage divider unit, respectively. Both the Hall unit and the second resistor unit are used to be electrically connected to a power supply. The voltage divider unit is used to be electrically connected to a control unit. The second resistor unit is used to output a first current based on the node voltage and the power supply voltage output by the power supply, wherein the node voltage is the voltage at the common terminal of the Hall unit and the first resistor unit; the first resistor unit is used to generate the node voltage based on the node current, wherein the node current is the current flowing through the common terminal of the Hall unit and the first resistor unit; when the Hall unit is in a first state based on the first magnetic field signal, the node voltage is equal to the product of the resistance value of the first resistor unit and the current flowing through the Hall unit; When the Hall unit is in a second state according to the second magnetic field signal, the node voltage is equal to the sum of the first parameter and the second parameter. The first parameter is the product of the resistance of the first resistor unit and the current flowing through the Hall unit, and the second parameter is the product of the resistance of the first resistor unit and the first current. The voltage divider unit is used to output a target voltage to the control unit according to the node voltage.
2. The voltage-mode Hall circuit of claim 1, wherein, The Hall unit includes a Hall chip, the first pin of which is electrically connected to the power supply, the second pin of which is electrically connected to the first resistor unit and the voltage divider unit respectively, and the third pin of which is electrically connected to the second resistor unit.
3. The voltage-mode Hall circuit of claim 2, wherein, The second pin of the Hall chip serves as a ground pin when the Hall chip is in the first state, and as a signal output pin when the Hall chip is in the second state.
4. The voltage-mode Hall circuit of claim 1, wherein, The second resistor unit includes a first resistor, a first end of which is electrically connected to the power supply, and a second end of which is electrically connected to the Hall unit.
5. The voltage-mode Hall circuit of claim 1, wherein, The first resistor unit includes a second resistor, the first end of which is electrically connected to the Hall unit and the voltage divider unit, and the second end of which is grounded.
6. The voltage-mode Hall circuit of claim 1, wherein, The voltage divider unit includes a third resistor and a fourth resistor. The first end of the third resistor is electrically connected to the Hall element and the first resistor element, respectively. The second end of the third resistor is electrically connected to the first end of the fourth resistor and the control unit, respectively. The second end of the fourth resistor is grounded.
7. The voltage Hall circuit according to any one of claims 1 to 6, characterized in that, The voltage-type Hall circuit further includes a filtering unit, which is electrically connected to the voltage divider unit and the control unit, respectively. The filtering unit is used to filter out high-frequency components in the target voltage.
8. The voltage Hall circuit according to claim 7, characterized in that, The filtering unit includes a first capacitor, the first end of which is electrically connected to the voltage divider unit and the control unit, and the second end of which is grounded.
9. An electronic product, characterized by The voltage Hall circuit comprises a power supply, a control unit and the voltage Hall circuit according to any one of claims 1-8, the power supply is electrically connected with the Hall unit and the second resistance unit in the voltage Hall circuit respectively, and the control unit is electrically connected with the voltage dividing unit in the voltage Hall circuit.
10. An automobile characterized by comprising: The electronic product comprises the voltage Hall circuit according to claim 9.