一种集成电源管理与多电机驱动的复合控制电路

Abstract

本实用新型属于电机驱动电路技术领域，具体涉及一种集成电源管理与多电机驱动的复合控制电路，包括电源管理模块用于将外部VBAT转换为5V或者12V可选的VDD漏极电压，所述电源管理模块包括二极管D2、电感L4及滤波电容组C54‑C56；PWM信号处理模块用于接收PWM2和PWM3信号并分压滤波，所述PWM信号处理模块包括电阻R16、电阻R22、电容C16、电容C53、接口J6以及接口J7；可切换驱动模块，采用TC118S芯片，通过跳线JP1切换电机驱动或灯控模式，所述可切换驱动模块包含限流电阻R10、限流电阻R8、限流电阻R7、限流电阻R2、测试点TP30‑TP34、测试点TP25‑TP26、电机或者灯接口J3和J4。本实用新型，适用于AI交互的机器人玩具应用场景。

Claims

1. An integrated power management and multi-motor drive hybrid control circuit, characterized by: include The power management module is used to convert the external VBAT to a selectable 5V or 12V VDD drain voltage. The power management module includes a diode D2, an inductor L4, and a filter capacitor bank C54-C56. The PWM signal processing module is used to receive PWM2 and PWM3 signals and perform voltage division and filtering. The PWM signal processing module includes resistor R16, resistor R22, capacitor C16, capacitor C53, interface J6, and interface J7. The switchable drive module uses a TC118S chip and switches between motor drive and lamp control modes via jumper JP1. The switchable drive module includes current-limiting resistors R10, R8, R7, and R2, test points TP30-TP34, test points TP25-TP26, and motor or lamp interfaces J3 and J4.

2. The integrated power management and multi-motor drive composite control circuit according to claim 1, wherein: In the power management module, diode D2 is a Schottky diode, model SS34; inductor L4 is an energy storage inductor, model FXL0420-2R2-M, with an inductance of 2.2μH; filter capacitor C54 is a 10μF / 16V electrolytic capacitor; and filter capacitors C55 and C56 are both 104 / 16V ceramic capacitors.

3. The integrated power management and multi-motor drive composite control circuit of claim 2, wherein: In the PWM signal processing module, R16 and R22 are both 220Ω resistors with 5% precision, C16 and C53 are both 104 / 16V ceramic capacitors, and the filtered PWM signal is output from pin 3 of interfaces J6 and J7.

4. The integrated power management and multi-motor drive composite control circuit of claim 3, wherein: In the switchable drive module, the output terminals OUTA and OUTB of the TC118S chip are connected to the motor M or the lamp group through jumper JP1. The current limiting resistors R10-R2 are all 220Ω resistors with a precision of 5%. The test point TP26 is connected in series between the motor M and the collector of the transistor Q1 for current sampling.

5. The integrated power management and multi-motor drive composite control circuit of claim 4, wherein: In lighting control mode, the switchable drive module also includes a constant current resistor R30 with a resistance of 1kΩ, which is used to limit the current of the LED lamp group in lighting control mode.

6. The composite control circuit integrating power management and multi-motor drive according to claim 4, characterized in that: In motor drive mode, the OUTA / OUTB of the TC118S connects to the motor interface J3 / J4, and controls the forward and reverse rotation of the motor through the polarity of the PWMCH4H / L and PWMCH2H / L signals.

7. The integrated power management and multi-motor drive composite control circuit of claim 1, wherein: In the switchable drive module, the bottom of the TC118S chip is provided with 2×2cm heat dissipation copper foil and thermally conductive silicone; the motor is connected in parallel with a freewheeling diode for back EMF protection.

8. The integrated power management and multi-motor drive composite control circuit of claim 1, wherein: In the PWM signal processing module, a TVS diode is connected in parallel between PWM2 and PWM3 and ground.

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