TMC2130：高性能步进电机驱动芯片数据手册

下载需积分: 50 | PDF格式 | 2.82MB | 更新于2024-07-15 | 67 浏览量 | 举报

"TMC2130是一款专用于两相步进电机的高性能驱动集成电路，其数据手册提供了详细的驱动电路、寄存器配置和芯片特性。该芯片支持2.0A线圈电流（峰值2.5A），具备微步进插值功能、SPI接口，并能在4.75到46VDC的电压范围内工作。" TMC2130芯片的特征和优势包括： 1. **2相步进电机驱动**：设计适用于最高2.0A的线圈电流，峰值可达2.5A，适合驱动各种类型的两相步进电机。 2. **微步进插值**：采用microPlyer技术，实现高分辨率的步进控制，最高可达256细分，确保平滑运动。 3. **SPI接口**：标准SPI接口简化了与微控制器之间的通信，提高了系统集成的灵活性。 4. **宽电压范围**：工作电压在4.75到46VDC之间，适应性强，能应对不同电源环境。 5. **stealthChop技术**：这是一种超静音运行和流畅运动的技术，大大降低了电机运行时的噪声。 6. **spreadCycle技术**：这种高度动态的电机控制斩波器，确保电机控制的高效和快速响应。 7. **dcStep负载依赖速度控制**：根据负载条件自动调整电机速度，提高系统性能。 8. **stallGuard2**：高精度无传感器电机负载检测，可识别电机是否卡死，提升系统的可靠性。 9. **coolStep节能电流控制**：通过智能电流控制，最多可节省75%的能源，降低系统运行成本。 10. **集成电流感应选项**：内置电流感测功能，能精确控制电机电流，确保稳定运行。 11. **被动刹车和自由轮模式**：在电机停止时提供被动刹车，且支持自由轮模式，防止电机惯性继续转动。 12. **全面保护和诊断**：包括过热、过流和短路保护等，保障设备安全运行。 13. **小型封装**：采用5x6mm² QFN36或TQFP48封装，节省板级空间，适用于紧凑型设计。 TMC2130芯片广泛应用在纺织机械、缝纫机、工厂及实验室自动化、3D打印机、液体处理、医疗设备、办公自动化、闭路电视、安防系统、自动取款机、现金循环器、销售点设备、泵和阀门等领域。这款芯片结合了高效能、低噪音和智能控制技术，是驱动两相步进电机的理想选择。通过SPI接口和丰富的功能集，开发者可以轻松地实现精确、节能且安静的步进电机控制，满足各种应用需求。

TMC2130 DATASHEET (Rev. 1.10 / 2018-MAY-09) 16

www.trinamic.com

3.4.2 Internal Regulator Bridged

In case a clean external 5V supply is available, it can be used for complete supply of analog and

digital part (Figure 3.5). The circuit will benefit from a well-regulated supply, e.g. when using a +/-1%

regulator. A precise supply guarantees increased motor current precision, because the voltage at

5VOUT directly is the reference voltage for all internal units of the driver, especially for motor current

control. For best performance, the power supply should have low ripple to give a precise and stable

supply at 5VOUT pin with remaining ripple well below 5mV. Some switching regulators have a higher

remaining ripple, or different loads on the supply may cause lower frequency ripple. In this case,

increase capacity attached to 5VOUT. In case the external supply voltage has poor stability or low

frequency ripple, this would affect the precision of the motor current regulation as well as add

chopper noise.

5V Voltage

regulator

+5V

5VOUT

VSA

4.7µ

VCC

470n

10R

Well-regulated, stable

supply, better than +-5%

Figure 3.5 Using an external 5V supply to bypass internal regulator

3.5 Pre-Regulator for Reduced Power Dissipation

When operating at supply voltages up to 46V for VS and VSA, the internal linear regulator will

contribute with up to 1W to the power dissipation of the driver. This will reduce the capability of the

chip to continuously drive high motor current, especially at high environment temperatures. When no

external power supply in the range 5V to 24V is available, an external pre-regulator can be built with

a few inexpensive components in order to dissipate most of the voltage drop in external components.

Figure 3.6 shows different examples. In case a well-defined supply voltage is available, a single 1W or

higher power Zener diode also does the job.

5V Voltage

regulator

5VOUT

VSA

4.7µ

VCC

470n

2R2

BCX56 or

similar

22k

4k7

Simple pre-regulator for 24V up to 46V

5V Voltage

regulator

5VOUT

VSA

4.7µ

VCC

470n

2R2

BCX56 or

similar

22k

Simple short circuit protected pre-regulator for 24V up to 46V

Z5.6V e.g.

MM5Z5V6

100R

470n

16V

470n

16V

Figure 3.6 Examples for simple pre-regulators

TMC2130 DATASHEET (Rev. 1.10 / 2018-MAY-09) 18

www.trinamic.com

3.7 High Motor Current

When operating at a high motor current, the driver power dissipation due to MOSFET switch on-

resistance significantly heats up the driver. This power dissipation will heat up the PCB cooling

infrastructure also, if operated at an increased duty cycle. This in turn leads to a further increase of

driver temperature. An increase of temperature by about 100°C increases MOSFET resistance by

roughly 50%. This is a typical behavior of MOSFET switches. Therefore, under high duty cycle, high

load conditions, thermal characteristics have to be carefully taken into account, especially when

increased environment temperatures are to be supported. Refer the thermal characteristics and the

layout hints for more information. As a thumb rule, thermal properties of the PCB design become

critical for the QFN-36 at or above about 1000mA RMS motor current for increased periods of time.

Keep in mind that resistive power dissipation raises with the square of the motor current. On the

other hand, this means that a small reduction of motor current significantly saves heat dissipation

and energy.

An effect which might be perceived at medium motor velocities and motor sine wave peak currents

above roughly 1.2A peak is a slight sine distortion of the current wave when using spreadCycle. It

results from an increasing negative impact of parasitic internal diode conduction, which in turn

negatively influences the duration of the fast decay cycle of the spreadCycle chopper. This is, because

the current measurement does not see the full coil current during this phase of the sine wave,

because an increasing part of the current flows directly from the power MOSFETs’ drain to GND and

does not flow through the sense resistor. This effect with most motors does not negatively influence

the smoothness of operation, as it does not impact the critical current zero transition. The effect does

not occur with stealthChop.

3.7.1 Reduce Linear Regulator Power Dissipation

When operating at high supply voltages, as a first step the power dissipation of the integrated 5V

linear regulator can be reduced, e.g. by using an external 5V source for supply. This will reduce overall

heating. It is advised to reduce motor stand still current in order to decrease overall power

dissipation. If applicable, also use coolStep. A decreased clock frequency will reduce power dissipation

of the internal logic. Further a decreased chopper frequency also can reduce power dissipation.

3.7.2 Operation near to / above 2A Peak Current

The driver can deliver up to 2.5A motor peak current. Considering thermal characteristics, this only is

possible in duty cycle limited operation. When a peak current up to 2.5A is to be driven, the driver

chip temperature is to be kept at a maximum of 105°C. Linearly derate the design peak temperature

from 125°C to 105°C in the range 2A to 2.5A output current (see Figure 3.8). Exceeding this may lead

to triggering the short circuit detection.

Die

Temperature

Peak coil

current

105°C

125°C

Opearation not recommended

for increased periods of time

2.5A1.75A

115°C

135°C

1.5A

Limit by lower limit of

overtemperature threshold

Specified operational

range for max. 125°C

Derating

for >2A

High temperature

range

Current

limitation

2.25A

Figure 3.8 Derating of maximum sine wave peak current at increased die temperature

TMC2130 DATASHEET (Rev. 1.10 / 2018-MAY-09) 20

www.trinamic.com

3.8 Driver Protection and EME Circuitry

Some applications have to cope with ESD events caused by motor operation or external influence.

Despite ESD circuitry within the driver chips, ESD events occurring during operation can cause a reset

or even a destruction of the motor driver, depending on their energy. Especially plastic housings and

belt drive systems tend to cause ESD events of several kV. It is best practice to avoid ESD events by

attaching all conductive parts, especially the motors themselves to PCB ground, or to apply electrically

conductive plastic parts. In addition, the driver can be protected up to a certain degree against ESD

events or live plugging / pulling the motor, which also causes high voltages and high currents into

the motor connector terminals. A simple scheme uses capacitors at the driver outputs to reduce the

dV/dt caused by ESD events. Larger capacitors will bring more benefit concerning ESD suppression,

but cause additional current flow in each chopper cycle, and thus increase driver power dissipation,

especially at high supply voltages. The values shown are example values – they might be varied

between 100pF and 1nF. The capacitors also dampen high frequency noise injected from digital parts

of the application PCB circuitry and thus reduce electromagnetic emission. A more elaborate scheme

uses LC filters to de-couple the driver outputs from the motor connector. Varistors in between of the

coil terminals eliminate coil overvoltage caused by live plugging. Optionally protect all outputs by a

varistor against ESD voltage.

Full Bridge A

Full Bridge B

stepper

motor

OA1

OA2

OB1

OB2

Driver

470pF

100V

470pF

100V

470pF

100V

470pF

100V

Full Bridge A

Full Bridge B

stepper

motor

OA1

OA2

OB1

OB2

Driver

470pF

100V

470pF

100V

50Ohm @

100MHz

50Ohm @

100MHz

50Ohm @

100MHz

50Ohm @

100MHz

Fit varistors to supply voltage

rating. SMD inductivities

conduct full motor coil

current.

470pF

100V

470pF

100V

Varistors V1 and V2 protect

against inductive motor coil

overvoltage.

V1A, V1B, V2A, V2B:

Optional position for varistors

in case of heavy ESD events.

BRB

BRA

100nF

16V

100nF

16V

V1A

V1B

V2A

V2B

Figure 3.10 Simple ESD enhancement and more elaborate motor output protection

剩余102页未读，继续阅读

W17667164853

粉丝: 2

TMC2130：高性能步进电机驱动芯片数据手册

TMC5130步进电机评估板电路设计文件包

TMC5160步进电机驱动板设计资料包分享

TMC262评估板电路原理图解析

Datasheet TMC5160 Chinese.pdf

TMC603A.pdf

TMC2225-SA.pdf

TMC2209中文手册.pdf

TMC2208英文版.pdf

TMC2660中文资料.pdf

如何用TMC5160实现stallguard.pdf

最新资源