DRV10970 [TI]

12V 标称电压、3A 峰值含传感器正弦或梯形控制三相 BLDC 电机驱动器;


型号：	DRV10970
厂家：	TEXAS INSTRUMENTS
描述：	12V 标称电压、3A 峰值含传感器正弦或梯形控制三相 BLDC 电机驱动器电机驱动传感器驱动器
文件：	总42页 (文件大小：2105K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

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DRV10970

ZHCSES6A –FEBRUARY 2016–REVISED MARCH 2016

DRV10970 三相无刷直流电机驱动器

1 特性

3 说明

•

宽电源电压范围：5V 至 18V

DRV10970 是一款集成式三相 BLDC 电机驱动器，适

用于家用电器、冷却风扇以及其他通用电机控制应

用。该器件内置智能特性，并且拥有小巧外形和简单的

引脚分布结构，不仅降低了设计复杂度、节省了电路板

空间，而且还降低了系统成本。集成的保护功能提高了

系统的稳健性和可靠性。

集成场效应晶体管 (FET)：1A 均方根 (RMS)、

1.5A 峰值输出相位/绕组电流

•

总驱动器 H + L R_DSON：400mΩ

内置 180° 正弦波形和梯形换向

休眠模式下的功耗超低

(35µA)

DRV10970 的输出级包含三个 R_DSON为 400 mΩ (H +

L) 的半桥。每个半桥都能够驱动高达 1A RMS 和 1.5A

峰值的输出电流。当器件进入休眠模式时，电流消耗典

型值为 35µA。

•

自适应驱动角度调整

三霍尔传感器或单霍尔传感器两个选项，最大程度

地降低系统成本

•

电机旋转方向控制

可配置为以 30° 或 0° 放置霍尔传感器

可调节的重试时间（电机锁定后）

可通过编程设定的电流限制功能

转速计 – 在开漏 FG 引脚上提供电机转速信息

在开漏 RD 引脚上提供电机锁定报告

保护特性

该器件内置有高级的 180° 正弦波形换向算法，可实现

高效率、低转矩纹波和出色的声学性能。自适应驱动角

度调整功能可确保器件在任何电机参数和负载条件下获

得最优效率。

DRV10970 针对基于差分或单端霍尔传感器的应用而

设计。差分霍尔信号输入由集成的比较器检测。该器件

支持基于三个霍尔传感器和单个霍尔传感器的应用；

单霍尔传感器模式通过减少两个霍尔传感器来降低系统

成本。

–

电源 (VM) 欠压锁定

逐周期电流限制

过流保护 (OCP)

热关断

器件信息⁽¹⁾

电机锁定检测和报告

器件型号

DRV10970

封装

封装尺寸（标称值）

2 应用

TSSOP (24)

7.80mm × 6.40mm

•

冷却风扇

(1) 要了解所有可用封装，请见数据表末尾的可订购产品附录。

小型家用电器

应用电路

通用无刷直流 (BLDC) 电机驱动器

VCC VCC

R_FG

R_RD

C_SW

FG RD

CPP CPN

VCP

C_VCP

C_VM

VINT

C_VINT

VINT/VCC

R_HALL

GND

GND/VINT

GND/VINT/FLOATING

GND/VINT

BRKMOD

DAA

U_HP

U_HN

V_HP

V_HN

W_HN

W_HP

CMTMOD

U_HALL

RETRY

V_HALL

W_HALL

C_RETRY

PWM

R_CS

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

English Data Sheet: SLVSCU7

DRV10970

ZHCSES6A –FEBRUARY 2016–REVISED MARCH 2016

www.ti.com.cn

8.3 Feature Description................................................. 13

8.4 Device Functional Modes........................................ 16

Application and Implementation ........................ 21

9.1 Application Information............................................ 21

9.2 Typical Application ................................................. 28

特性.......................................................................... 1

应用.......................................................................... 1

说明.......................................................................... 1

修订历史记录 ........................................................... 2

说明（续）.............................................................. 3

Pin Configuration and Functions......................... 3

Specifications......................................................... 5

7.1 Absolute Maximum Ratings ...................................... 5

7.2 ESD Ratings.............................................................. 5

7.3 Recommended Operating Conditions....................... 5

7.4 Thermal Information.................................................. 6

7.5 Electrical Characteristics........................................... 6

7.6 Typical Characteristics.............................................. 9

Detailed Description ............................................ 11

8.1 Overview ................................................................. 11

8.2 Functional Block Diagram ....................................... 12

10 Power Supply Recommendations ..................... 30

11 Layout................................................................... 30

11.1 Layout Guidelines ................................................. 30

11.2 Layout Example .................................................... 30

12 器件和文档支持 ..................................................... 31

12.1 社区资源................................................................ 31

12.2 商标....................................................................... 31

12.3 静电放电警告......................................................... 31

12.4 Glossary................................................................ 31

13 机械、封装和可订购信息....................................... 32

4 修订历史记录

注：之前版本的页码可能与当前版本有所不同。

Changes from Original (February 2016) to Revision A

Page

•

已更改器件状态至“量产数据”且已发布完整数据表................................................................................................................. 1

DRV10970

www.ti.com.cn

ZHCSES6A –FEBRUARY 2016–REVISED MARCH 2016

5 说明（续）

该器件实现了一个标准控制接口，其中包含脉宽调制 (PWM) 输入（速度命令）、FG 输出（速度反馈）、FR 输入

（正向和反向控制）以及 RD 输出（电机锁定指示）。

DRV10970 器件支持以 30° 和 0° 放置霍尔传感器（相对于对应相的 BEMF）。该器件实现了梯形驱动模式来满足

更高的功率需求。

DRV10970 器件根据霍尔传感器输入是否切换开关状态来确定转子锁定情况。该器件会在经过一段可调节的自动重

试时间（可通过连接至 RETRY 引脚的电容来配置）后重试旋转电机。

该器件包含多种保护功能来提高系统稳健性：过流保护、欠压保护、过热保护以及转子锁定检测与报告。

DRV10970 采用耐热增强型 24 引脚薄型小外形尺寸 (TSSOP) 封装（环境友好型：符合 RoHS 标准并且无

Sb/Br）。

6 Pin Configuration and Functions

PWP Package

24-Pin TSSOP with PowerPAD™

Top View

DAA

FG 24

FR 23

U_HP

U_HN

V_HP

V_HN

W_HP

W_HN

VCP

RETRY 22

BRKMOD 21

CMTMOD 20

PWM 19

RD 18

PowerPAD

CS 17

CPP

VINT 16

VM 15

10 CPN

12 GND

Pin Functions

TYPE

DESCRIPTION

NAME

NO.

POWER AND GROUND

CPN

CPP

GND

VCP

—

Connect a 0.1-µF X7R capacitor rated for VM between CPN

and CPP

Charge pump switching node

PWR

—

Device ground

Must be connected to board ground

Charge pump output

Connect a 16-V, 1-µF ceramic capacitor to VM

Integrated regulator (typical voltage 5 V) mainly for internal

circuits; Provide external power for less than 20 mA. Bypass

to GND with a 10-V, 2.2-µF ceramic capacitor

VINT

PWR

Integrated regulator output

Power supply

Connect to motor supply voltage; bypass to GND with a 10-µF

ceramic capacitor rated for VM

DRV10970

ZHCSES6A –FEBRUARY 2016–REVISED MARCH 2016

www.ti.com.cn

Pin Functions (continued)

TYPE

DESCRIPTION

NAME

CONTROL

NO.

—

Current limit setting pin

Connect a resistor to adjust the current limit.

Low: 10° drive angle adjustment

High: 5° drive angle adjustment

Floating: adaptive drive angle adjustment

Drive angle adjustment

configuration pin

DAA

Open drain Electrical Frequency Output pin. One toggle per

electrical cycle. Requires an external pull-up of 3.3-kΩ.

Frequency indication pin

Motor direction control

Brake mode setting

Direction Control Input.

When low, phase driving sequence is U → V → W ( U phase

is leading V phase by 120°).

When high, the phase driving sequence is U → W → V.

Low: Coasting mode (phases are tri-stated)

High: Brake mode (phases are driven low)

BRKMOD

PWM

Variable duty cycle PWM input for

speed control

Connect to PWM signal.

Pulled logic low with lock condition; open-drain output requires

an external pull-up of 3.3-kΩ

Lock indication pin

RETRY

Auto retry timing configure

Timing adjustable by capacitor

Low: Sinusoidal operation mode with 0° Hall placement

High: Sinusoidal operation mode with 30° Hall placement

Floating: Trapezoidal operation mode with 30° Hall placement

CMTMOD

U_HN

Commutation mode setting

U-phase negative Hall input

Differential Hall Sensor negative input for U-phase. Connect to

hall sensor negative output. When logic level hall IC is used,

tie this pin to VINT/2 level. In single Hall mode, the device

uses U-phase hall inputs to drive the motor.

Differential Hall Sensor positive input for U-phase. Connect to

hall sensor positive output. When logic level hall IC is used,

connect this to hall IC output. In single Hall mode, the device

uses U-phase hall inputs to drive the motor.

U_HP

V_HN

V_HP

W_HN

W_HP

U-phase positive Hall input

V-phase negative Hall input

V-phase positive Hall input

W-phase negative Hall input

W-phase positive Hall input

Differential Hall Sensor negative input for V-phase. Connect to

hall sensor negative output. When logic level hall sensor is

used, tie this pin to VINT/2 level. In single hall mode, ground

this pin.

Differential Hall Sensor positive input for V-phase. Connect to

hall sensor positive output. When logic level hall IC is used,

connect this to hall IC output. Leave this pin floating to enable

single Hall operation.

Differential Hall Sensor negative input for W-phase. Connect

to hall sensor negative output. When logic level hall sensor is

used, tie this pin to VINT/2 level. In single hall mode, ground

this pin.

Differential Hall Sensor positive input for W-phase. Connect to

hall sensor positive output. When logic level hall IC is used,

connect this to hall IC output. In single hall mode, ground this

pin.

OUTPUT STAGE

U phase output

V phase output

W phase output

Connect to motor terminal U

Connect to motor terminal V

Connect to motor terminal W

External Components

COMPONENT

PIN 1

PIN 2

RECOMMENDED

10-µF ceramic capacitor rated for VM (if VM = 12 V, 25-V capacitor is suggested, if

VM = 18 V, 35-V capacitor is suggested)

C_VM

GND

C_VCP

C_SW

VCP

CPP

16-V, 1-µF ceramic capacitor

CPN

0.1-µF X7R capacitor rated for VM

DRV10970

www.ti.com.cn

ZHCSES6A –FEBRUARY 2016–REVISED MARCH 2016

External Components (continued)

COMPONENT

PIN 1

VINT

PIN 2

RECOMMENDED

C_VINT

C_RETRY

R_CS

GND

10-V, 2.2-µF ceramic capacitor Rotor Lock Detection and Retry

See 公式 2 for capacitor value

RETRY

VCC⁽¹⁾

See Current Limit and OCP for resistor value

R_RD

>1 kΩ, RD is open-drain output. This component must be pulled up externally.

>1 kΩ, FG is open-drain output. This component must be pulled up externally.

R_FG

(1) VCC is not a pin on the DRV10970. It can be VINT or any other system voltage (for example the 3.3-V or 5-V supply voltage powering

the microcontroller). A VCC supply voltage pull-up is required for open-drain outputs RD and FG

7 Specifications

7.1 Absolute Maximum Ratings

over operating free-air temperature range (unless otherwise noted)

(1) (2)

MIN

MAX

UNIT

Power supply voltage (VM)

–0.3

Power supply voltage ramp rate (VM)

Charge pump voltage (VCP, CPP)

V/µs

–0.3

Charge pump negative switching pin (CPN)

Internal logic regulator voltage (VINT)

Control pin voltage (PWM, FR, RETRY, CMTMOD, BRKMOD, DAA)

Open drain output current (RD, FG)

Open drain output voltage (RD, FG)

Output voltage (U,V,W)

5.5

VINT + 0.3

–0.3

–1

Output current (U,V,W)

Hall input voltage (U_HP, U_HN, V_HP, V_HN, W_HP, W_HN)

Current limit adjust pin voltage (CS)

Operating junction temperature, T_JMAX

Storage temperature, T_stg

–0.3

–40

–65

3.6

150

°C

(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings

only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended

Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

(2) Referenced with respect to GND.

7.2 ESD Ratings

VALUE

±2000

±500

UNIT

Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001⁽¹⁾

Charged-device model (CDM), per JEDEC specification JESD22-C101⁽²⁾

V_(ESD)

Electrostatic discharge

(1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.

(2) JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.

7.3 Recommended Operating Conditions

over operating free-air temperature range (unless otherwise noted)

MIN

MAX

UNIT

Power supply voltage

PWM, FR, CMTMOD, BRKMOD,

DAA, RETRY

Logic level input voltage

VINT

Open drain output pullup voltage FG, RD

U_HP, U_HN, V_HP, V_HN, W_HP,

W_HN

Hall input

I_OUT

Output current

1.5

DRV10970

ZHCSES6A –FEBRUARY 2016–REVISED MARCH 2016

www.ti.com.cn

Recommended Operating Conditions (continued)

over operating free-air temperature range (unless otherwise noted)

MIN

MAX

100

20⁽¹⁾

UNIT

kHz

ƒ_PWM

I_VINT

Applied PWM signal

VINT external load current

Operating junction temperature

T_JOPR

–40

125

°C

(1) VINT is mainly for internal use. For external, it is only suggested to provide bias current for hall circuit.

7.4 Thermal Information

DRV10970

PWP (TSSOP)

24 PINS

36.1

THERMAL METRIC⁽¹⁾

UNIT

R_θJA

Junction-to-ambient thermal resistance

Junction-to-case (top) thermal resistance

Junction-to-board thermal resistance

°C/W

R_θJC(top)

R_θJB

17.4

14.8

ψ_JT

Junction-to-top characterization parameter

Junction-to-board characterization parameter

Junction-to-case (bottom) thermal resistance

0.4

ψ_JB

14.5

R_θJC(bot)

1.1

(1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application

report, SPRA953.

7.5 Electrical Characteristics

T_A= 25°C, over recommended operating conditions unless otherwise noted.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

POWER SUPPLIES (VM, VINT)

VM operating voltage

VM = 12 V, no external load on

VINT

I_VM

VM operating supply current

VM supply current during

sleep mode

I_{VM_SLEEP}

VM = 5 and 12 V

µA

VM = 12 V, 0-mA external load

VM = 12 V, 20-mA external load

VM = 5 V, 0-mA external load

VM = 5 V, 20-mA external load

4.5

5.5

VINT

Integrated regulator voltage

4.8

Ground potential difference

between GND pin to PCB

ground

V_GND-BGND

300

CHARGE PUMP (VCP, CPP, CPN)

VM = 5 V, less than 1-mA load

VM = 12 V, less than 1-mA load

VM = 18 V, less than 1-mA load

19.5

25.5

VCP

VCP operating voltage

CONTROL INPUTS (PWM)

V_IL-PWM

PWM Input logic low voltage

VM = 5 V and VM = 12 V

2.4

400

0.8

5.3

V_IH-PWM

V_HYS-PWM

R_PU-PWM

PWM Input logic high voltage VM = 5 V and VM = 12 V

PWM Input logic hysteresis

Internal pullup resistance

VM = 5 V and VM = 12 V

kΩ

100

120

2.5

Internal pullup resistance in

sleep mode

VM = 5 V and VM = 12 V, sleep

mode

R_PU-PWM-SL

MΩ

CONTROL INPUTS (RETRY)

Retry timing set sinking

current

I_RETRY-SINK

VM = 5 V and 12 V

µA

DRV10970

www.ti.com.cn

ZHCSES6A –FEBRUARY 2016–REVISED MARCH 2016

Electrical Characteristics (continued)

T_A= 25°C, over recommended operating conditions unless otherwise noted.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

I_RETRY-

SOURCE

Retry timing set sourcing

current

VM = 5 V and 12 V

µA

Retry comparator high

threshold

V_{RETRY_H}

V_{RETRY_L}

VM = 5 V and 12 V

1.1

1.2

0.6

1.3

Retry comparator low

threshold

0.55

0.65

CONTROL INPUTS (FR, DAA, CMTMOD, BRKMOD)

V_IL

Digital input logic low voltage VM = 5 V and 12 V

Digital input logic high voltage VM = 5 V and 12 V

2.2

0.8

5.3

V_IH

V_IFLOATING

Digital input floating voltage

VM = 5 V and 12 V

24% × VINT

36% × VINT

FR pin Internal pulldown

resistance

R_PD-FR

VM = 5 V and 12 V

160

200

240

kΩ

BRKMOD pin Internal

pulldown resistance

R_PD-BRKMOD

VM = 5 V and 12 V

CONTROL OUTPUTS (RD, FG)

I_OSINK

OD output pin sink current

VO = 0.3 V

VO = 12 V

3.5

OD output pin short current

limit

I_OSHORT

HALL INPUT COMPARATOR

Zero to positive peak including

offset. T_A= –40°C, 25°C, 125°C

V_HR

Hall input rising

–10

Zero to negative peak including

offset T_A= –40°C, 25°C, 125°C

V_HF

Hall input falling

Hall input hysteresis

–5

VHP-VHN T_A= –40°C, 25°C,

125°C

V_{HALL_HYS}

VM = 5.5 V – 18 V

VM = 5 V – 5.5 V

0.3

4.3

3.8

Vcom

Common mode voltage

Input frequency range

Finput

1000

UVLO

UVLO threshold voltage on

VM, rising

V_UVLO-VM-THR

V_UVLO-VM-THF

V_UVLO-VM-HYS

3.8

3.6

4.5

4.25

200

4.5

UVLO threshold voltage on

VM, falling

3.8

VM UVLO comparator

hysteresis

V_UVLO-VINT-

THR

VINT UVLO rise threshold

VINT UVLO fall threshold

4.1

3.8

100

4.2

V_UVLO-VINT-

THF

4.2

V_UVLO-VINT-

HYS

VINT UVLO comparator

hysteresis

300

INTEGRATED MOSFET

R_DSONSeries resistance (H + L)

VM = 12 V, VCP = 19 V, I_OUT

1.5 A

0.4

0.6

CURRENT LIMIT AND OVER CURRENT PROTECTION (OCP)

I_LIM

Current limit threshold

VM = 12 V, Rcs = 20 kΩ

1.3

1.15

1.5

1.2

1.7

1.25

Current limit circuit

comparator threshold

V_{ILIM_THR}

A_CL

VM = 12 V

Current limit attenuation factor VM = 12 V

22000

25000

28000

A/A

DRV10970

ZHCSES6A –FEBRUARY 2016–REVISED MARCH 2016

www.ti.com.cn

Electrical Characteristics (continued)

T_A= 25°C, over recommended operating conditions unless otherwise noted.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Over current protection

threshold. Magnitude of phase

current at which driver stage

is disabled to protect the

device.

I_OCP

VM = 5 V and 12 V

SLEEP MODE TIMING

Minimum PWM low time to

recognize a sleep command.

T_{SLEEP_EN}

T_{SLEEP_EX}

VM = 12 V

1.2

µs

Minimum PWM high to exit

from sleep mode.

THERMAL SHUTDOWN

Shut down temperature

threshold

T_{SDN_TR}

T_{SDN_RS}

T_{SDN_HYS}

Shut down triggering temperature

Shut down resume temperature

Shut down temperature hysteresis

150

140

160

150

170

160

°C

Shut down resume

temperature

Shut down temperature

hysteresis

LOCK DETECT

t_{LOCK_EN}

Lock detect time

Lock release time

0.6

0.7

0.8

t_{LOCK_EX}

Retry capacitor = 0.33 uF

DRV10970

www.ti.com.cn

ZHCSES6A –FEBRUARY 2016–REVISED MARCH 2016

7.6 Typical Characteristics

600

500

400

300

200

100

430

420

410

400

390

380

370

360

350

340

-40

4.5

Temperature (èC)

Supply Voltage (VM)

D001

D002

D004

D006

R_DSON

VM = 12 V

R_DSON

Temperature = 25°C

图 1. R_DSONAcross Temperature at 12 V

图 2. R_DSONAcross Voltage at 25°C

-40

125

4.5

4.8

Temperature (èC)

Supply Voltage (VM)

D003

Sleep Current

VM = 12 V

Sleep Current

Temperature = 25°C

图 3. Sleep Current Across Temperature at 12 V

图 4. Sleep Current Across Voltage at 25°C

4.9

4.89

4.88

4.87

4.86

4.85

4.84

4.83

4.82

4.76

4.74

4.72

4.7

4.68

4.66

4.64

4.62

4.6

4.58

4.56

4.54

4.52

-40

125

-40

125

Temperature (èC)

D005

5-V Regulator

VM = 12 V

IL = 20 mA

5-V Regulator

VM = 5 V

IL = 20 mA

图 5. VINT LDO Output Voltage Across Temperature,

图 6. VINT LDO Output Voltage Across Temperature,

VM = 12 V

VM = 5 V

DRV10970

ZHCSES6A –FEBRUARY 2016–REVISED MARCH 2016

www.ti.com.cn

Typical Characteristics (接下页)

10.2

10.1

9.9

9.8

9.7

9.6

9.5

9.4

9.3

9.9

9.8

9.7

9.6

9.5

-40

125

-40

125

Temperature (èC)

D007

D008

RETRY Sink Current

VM = 12 V

RETRY Source Current

VM = 12 V

图 7. Retry Sink Current at 12 V

图 8. Retry Source Current at 12 V

DRV10970

www.ti.com.cn

ZHCSES6A –FEBRUARY 2016–REVISED MARCH 2016

8 Detailed Description

8.1 Overview

The DRV10970 device controls three-phase brushless DC motors using a speed command (PWM) and direction

(FR) interface and Hall signals from the motor. The device is capable of driving up to 1-A RMS and 1.5-A peak

current per phase.

When the DRV10970 powers up, it starts to drive the motor in trapezoidal communication mode based on the

Hall sensor information. If all three Hall sensors are connected, commutation logic relies on all three Hall

sensors. If only the U phase Hall sensor is connected (V_HP is floating), DRV10970 starts to drive the motor in

single Hall sensor mode.

After 6 electrical cycles, the device switches to sinusoidal drive mode if the CMTMOD pin is not floating. If the

motor has Hall sensor 0° placement (set on the CMTMOD pin accordingly), the DRV10970 device automatically

adjusts the driving angle based on the feedback from the motor; it optimizes the efficiency regardless of the

motor parameters and the load conditions.

The adaptive driving angle adjustment function can be disabled by the DAA pin, in which case, fixed driving

angle is available for user to optimize the motor drive efficiency.

The steady-state motor speed is commanded by the PWM input duty cycle, which converts to an average output

voltage of VM multiplied by the duty cycle. Floating PWM pin is considered as 100% speed command. Motor

rotating direction can be controlled by FR input. Rotational direction can be changed while motor is spinning. The

device takes t_{LOCK_EX}time before reversing the direction.

The FG output is aligned with U phase Hall sensor signal which indicates the motor speed. And if the motor is

locked by external force for t_{LOCK_EN}, RD output will be asserted to indicate the rotor lock condition, and

DRV10970 retries after t_{LOCK_EX}period which is determined by the capacitor on the RETRY pin.

When the motor is stopped, either in lock condition or PWM equals zero, the state of the phases is selected by

BRKMOD pin; coasting (phases are floating) or braking (phases are pulled down to GND).

DRV10970 enters sleep mode when PWM is driven low for t_SLEEPtime and motor comes to a standstill (no FG),

internal circuits including regulators are turned off and the power consumption is less than I_{VM_SLEEP}

Overcurrent, current limit, thermal shutdown and undervoltage protection circuits prevent the system components

from being damaged during extreme conditions.

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8.2 Functional Block Diagram

CPN

CPP

VCP

Charge Pump

Phase U

pre-driver

Linear

Reg

VINT

VCP

PWM

Phase V

pre-driver

DAA

BRKMOD

CMTMOD

VCP

Core

Logic

Phase W

pre-driver

RETRY

VINT

VREF

I Limit

Current

Sense

U_HP

Hall

HALL_U

HALL_V

Hall

Com

U_HN

OSC

V_HP

V_HN

W_HP

Hall

Com

Reset

UVLO

Hall

Thermal

Shutdown

HALL_W

Hall

Com

W_HN

GND

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8.3 Feature Description

8.3.1 Current Limit and OCP

DRV10970 provides two stages of current control, cycle-by-cycle current limit and OCP.

The current limit function limits the motor phase current during the motor operation: during startup, acceleration,

sudden load change, and rotor lock condition while spinning. The application specific threshold is achieved by

choosing the value of the external resistor connected to the CS pin. 图 9 shows the simplified circuitry of the

current limit circuit using the CS pin. The voltage generated on the CS pin is proportional to the value of the

external resistor, R_CS. The external resistor value is chosen based on the current limit to be achieved (see 公式

1).

Current

Sense U

Sense V

Current

Sense

GND

A_CL

I_LIMIT

I_LIMIT= (V_{ILIM_THR}× A_CL) / R_CS

I_CS= I_LIMIT

A_CL

V_{ILIM_THR}

V_CS= I_LIMIT× R_CS/ A_CL

Digital

V_CS

CL Comparator

R_CS

GND

DRV10970

图 9. Current Limit Function Simplified Circuitry

Current limit threshold is set by 公式 1.

I_LIMIT= (V_{ILIM_THR}× A_CL) / R_CS

(1)

In trapezoidal operation mode, motor phase current is restricted by means of cycle-by-cycle limit, as shown in 图

10. If the current limit is triggered, one of the conducting MOSFETs is disabled and the complementary side

MOSFET is activated until the beginning of the next PWM cycle. In the example shown in 图 10, MOSFET 1 and

MOSFET 5 are conducting MOSFETs, MOSFET 1 is disabled, and the complementary MOSFET 4 is activated

when the current limit is triggered.

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Feature Description (接下页)

GND

Voltage on phase U

without current limit

GND

Voltage on phase V

GND

Current limit

threshold

Current on phase U and

V without current limit

Current limit

threshold

Current on phase U and

V with current limit

Voltage on phase U

with current limit

GND

图 10. Cycle-by-Cycle Current Limit in Trapezoidal Mode

If the current limit is triggered in sinusoidal operation mode, DRV10970 device switches to trapezoidal mode of

operation to exercise cycle-by-cycle current limiting. If the current limit condition does not show up for 2 electrical

cycles, the device will switch back to sinusoidal mode (shown in 图 11). The current limit threshold in sinusoidal

mode is 1.5 times the current limit value in the trapezoidal mode. The current limit function can be disabled by

connecting CS pin to GND.

1.5 × threshold

Current limit

threshold

Current limit

threshold

Cycle 1 without Cycle 2 without

current limit current limit

Cycle-by-Cycle Limit

1.5 × threshold

图 11. Current Limit in Sinusoidal Mode

OCP has a fixed threshold I_OCP, it can protect the device in catastrophic short-circuit conditions such as phase

short to GND, phase short to VM and phase short to another phase. The I_OCPlimit is similar to the current limit,

except that when phase current crosses I_OCPthreshold (positively or negatively), the device shuts down all the

MOSFETs immediately. The device will wait for 2 ms before it starts driving the motor again. If the high current

still exists, the device will shut down the MOSFETs and again wait for 2 ms. This process of checking

overcurrent will continue until the OC event goes away. The device is capable of handling an OC event

continuously for its lifetime. The OC protection feature cannot be disabled.

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Feature Description (接下页)

8.3.2 Thermal Shutdown

If the junction temperature exceeds safe limits, the DRV10970 device places its outputs (U, V, W) in high-

impedance mode. After the junction temperature has fallen to a safe level, operation automatically resumes.

8.3.3 Rotor Lock Detection and Retry

A locked rotor condition is detected if the Hall signal stops toggling for t_{LOCK_EN}. The device enters a motor

parking state: coasting (if BRKMOD = 0) or braking state (if BRKMOD = 1). In the coasting state, the device

places its outputs (U, V, W) in a high-impedance state. In the braking state, it keeps the low-side MOSFETs ON

and high-side MOSFETs OFF. The RD pin is asserted to indicate the rotor lock condition. Operation resumes

after t_{LOCK_EX}time at the same time RD is deasserted. This process repeats until the locked rotor condition is

cleared. RD will be deasserted in sleep mode.

The t_{LOCK_EX}time is determined by the capacitor value connected to the RETRY pin. The accuracy of the

capacitor and ground potential difference between the device ground and C_RETRYcapacitor ground affects the

accuracy of the time setting. After the DRV10970 device enters rotor locked state, I_RETRY, sourcing current starts

to charge the capacitor, C_RETRY, until the voltage of the capacitor reaches V_{RETRY_H}, then I_RETRYsinking current

starts to discharge the capacitor, C_RETRY, until the voltage of the capacitor falls below V_{RETRY_L}. This process

repeats 128 times which determines the t_{LOCK_EX}, then DRV10970 retry starting the motor.

t_{LOCK_EX}= 15.36 × 10⁶× C_RETRY(in seconds)

(2)

DRV10970

VINT

To digital

Counter

I_RETRY

RETRY

Motor

Lock

I_RETRY

GND

图 12. Lock Release Timing Circuit

V_{RETRY_H}

V_{RETRY_L}

GND

128 times

Motor Spinning

Motor Locked

Motor Spinning

图 13. Lock Release Timing Waveform

8.3.4 Supply Undervoltage Condition (UVLO)

When the supply voltage (VM) level falls below the undervoltage lockout threshold voltage (V_UVLO-Th-f), the

DRV10970 will keep phases (U, V, W) in high-impedance mode. Operation resumes when VM rises above the

V_UVLO-Th-rthreshold.

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Feature Description (接下页)

8.3.5 Sleep Mode

The DRV10970 provides a sleep mode function to save power when the motor is not spinning. The device can

be commanded to enter sleep mode by driving logic low on PWM pin for at least t_{SLEEP_EN}seconds. Before

entering low-power state, the speed will be ramped down (by brake condition or by coasting) where rotor lock

condition is detected. This sequence to bring the motor to a halt condition may take several seconds based on

the motor. The device then enters sleep state where reset is asserted and supply is driven to low. Only a small

portion of the logic is kept alive to detect the PWM pin high. The device will wake up after PWM goes high (PWM

high signal needs to be longer than t_{SLEEP_EX}) and starts to drive the motor again.

PWM

t_{SLEEP_EN}

t_{SLEEP_EX}>2 µs wide

>1.2 ms low

SLEEP_FLAG

WAKE_UP

MOTOR_STATE

BRAKE/COAST

WAIT FOR MOTOR TO STOP

SPINNING

SLEEP

INITIAL

Rotor Lock detected

MOTOR SPEED

5 V

VINT

OFF, Low Power State

ON State

图 14. Sleep Mode Sequence and Timing

The current consumption during sleep mode is less than I_{VM_SLEEP}

In sleep mode, internal regulator VINT is shut down; if the Hall sensors are powered by VINT, the Hall sensors

are also put into power off condition to further save power. The U, V, and W phase outputs are tri-stated, FG and

RD pins are de-asserted while in the sleep mode. The device will not be able to perform OCP while in sleep

mode.

8.4 Device Functional Modes

8.4.1 Operation in Trapezoidal Mode and Sinusoidal Mode

The DRV10970 device can operate in either trapezoidal mode or sinusoidal mode depending on the setting of

CMTMOD pin. Sinusoidal operation mode provides better acoustic performance, which is more suitable for

applications like refrigerator fans, HVAC fans, pumps, and other home appliances. Trapezoidal mode provides

higher driving torque, which is more suitable for systems with heavy and unpredictable load conditions, such as

power tools and actuators.

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Device Functional Modes (接下页)

8.4.1.1 Trapezoidal Control Mode

Trapezoidal control is also called 120° control or 6-step control. In the trapezoidal control mode, the DRV10970

device drives standard six step commutation sequence based on the Hall input states and FR (direction) pin

value. Trapezoidal (30° Hall placement) commutation is in accordance with 表 1. The startup scheme of

sinusoidal control mode is also based on trapezoidal commutation. Trapezoidal mode does not support single

Hall sensor operation; it may cause unpredictable motor operation.

表 1. Trapezoidal Commutation With 30° Hall Placement

PHASE OUTPUT⁽²⁾

STATE

HALL SIGNAL⁽¹⁾

FR = 1

FR = 0

High

Hi-Z

Low

Hi-Z

Low

Hi-Z

High

Hi-Z

Low

Hi-Z

High

Hi-Z

Low

Hi-Z

Low

Hi-Z

High

Hi-Z

High

Hi-Z

Low

Hi-Z

High

Hi-Z

Low

Hi-Z

High

Hi-Z

1x⁽³⁾

2x⁽³⁾

(1) Hall signal XHALL = 1 if the positive input terminal voltage (x_HP) is higher than the negative input

terminal voltage (x_HN)

(2) Phase output = Hi-Z which means both the high-side and low-side MOSFETs are turned off.

(3) State 1x and 2x are invalid states, DRV10970 will output high impedance for all three phases in this

condition. Hall sensor placement or connection needs to be changed.

表 2. Trapezoidal Commutation With 0° Hall Placement

8.4.1.2 Sinusoidal Pulse Wide Modulation (SPWM) Control Mode

If the sinusoidal operation mode is selected, the device will start the motor with trapezoidal operation (based on

the commutation table shown in 表 1) and switch to sinusoidal after 6 electrical cycles. If current limit is triggered

during trapezoidal startup, the transition will be delayed until current limit is cleared. If current limit is triggered in

sinusoidal operation, the device will switch back to trapezoidal mode and will remain until the current limit event

goes away (refer to Current Limit and OCP).

In sinusoidal control mode, the commutation will only rely on phase U Hall sensor input and ignore the phase V

and W Hall sensor input.

The DRV10970 provides sinusoidal voltage shaping in the SPWM mode. The device generates 25-kHz PWM

outputs on each phase, which have an average value of sinusoidal waveform on phase to phase. If the phase

voltage is measured with respect to ground, the waveform is sinusoidal coupled with third-order harmonics. At

any time among the three phases, one phase output equals to zero, as shown in 图 16.

PWM output

Average value

图 15. PWM Output and the Average Value

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U - V

V - W

W - U

LEFT: Sinusoidal voltage from phase to phase.

RIGHT: Sinusoidal voltage with third-order harmonics from phase to GND

图 16. Sinusoidal Voltage With Third-Order Harmonics Output

The output amplitude is determined by the VM and the maximum PWM duty cycle among one electrical cycle. If

VM is used to control the motor speed, the output maximum PWM duty cycle is 100%. The output amplitude is

proportional to the VM amplitude.

VM = 12 V

VM = 6 V

图 17. Adjust VM to Control the Motor Speed

The PWM is used for controlling the motor speed. System calculates the duty cycle of the PWM input as DutyIN,

which is converted into sinusoidal PWM output.

The maximum amplitude is when PWM input is 100% and maximum PWM output duty cycle is 100%, the output

amplitude will be VM. A lower value such as VM / 2 could be achieved by driving the PWM duty to 50%. When

the input duty cycle is less than 10% and greater than 0% DRV10970 keeps the input command at a 10% duty

cycle (see 图 18).

Output Duty

10%

Input Duty

Minimum Duty Cycle = 10%

图 18. Duty Cycle Profile

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100% PWM input

100% peak output

50% PWM input

50% peak output

VM / 2

图 19. Adjust PWM Input Duty Cycle to Control the Motor Speed

Note that the speed control PWM input frequency does not reflect to PWM output frequency on the phase

outputs. The device supports input PWM frequency in the range of 15 to 100 kHz, the PWM output frequency on

the phase is always 25 kHz.

8.4.2 Single Hall Sensor Operation

The DRV10970 device supports single Hall sensor operation to reduce system cost.

If only U phase Hall sensor is connected to the device and V and W phase Hall sensors are not installed in the

system, the device automatically drives the motor in single Hall sensor mode. Single Hall sensor operation does

not support trapezoidal operation, which may cause unpredictable motor behavior.

In single hall sensor mode, rotor is aligned to a known position for about 700 ms first and then motor is driven

with 2-step DC current into the coil, which means instead of 6-step control, the device only outputs 2 steps based

on the U phase Hall sensor signal. The direction of driving current is based on the FR input and the commutation

mode setting. 表 3 shows the startup logic. For example, if 0° Hall placement is selected (CMTMOD pin equals to

High), FR equals to high, and U phase Hall sensor signal is high, DRV10970 will drive U phase PWM and both V

and W phase low.

表 3. Single Hall Startup Commutation Table

PHASE OUTPUT

HALL

PLACEMENT

HALL SIGNAL

FR = 1

FR = 0

0°

PWM

LOW

PWM

LOW

Hi-Z

LOW

PWM

LOW

PWM

LOW

PWM

Hi-Z

LOW

PWM

LOW

PWM

Hi-Z

PWM

LOW

PWM

LOW

PWM

LOW

Hi-Z

30°

Hi-Z

Single Hall Align

PWM

Cycle-by-cycle current limit is effective during single Hall sensor startup. After 6 electrical cycles of startup, the

device will switch to sinusoidal mode of operation. If current limit is triggered, sinusoidal control will transit back

to 2-step drive mode, same as startup sequence. Refer to Current Limit and OCP.

Note that single Hall sensor operation mode may exhibit slight reverse spin of the rotor during startup. The

reverse movement will be less than 180 electrical degrees.

The rotor locked condition is detected when no U-phase hall switching for about 700ms. For certain low inertia

motors or no load condition, the rotor may continue to vibrate when the rotor is locked which may result in a hall

signal switching. This condition is not detected by the device as the hall period may look like a normal motor

spinning condition. In this scenario, the device may continue to drive the motor. Lowering the OC limit may help

resolve this condition.

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8.4.3 Adaptive Drive Angle Adjustment (ADAA) Mode

In sinusoidal mode, the phase voltage vector is driven such that phase current and BEMF voltages are aligned

(in-phase) in order to achieve the maximum motor efficiency possible. When Hall sensor is placed at 0°, the

BEMF voltage will be in-phase with respective Hall signals. The ADAA logic takes advantage of this fact and

aligns the U-phase current to the U-Hall sensor input.

If DAA pin is floating, the DRV10970 device will operate in the ADAA mode, in which case, the device

continuously monitors the phase difference between the U-phase current and U-phase Hall signal while adjusting

the phase voltage driving angle Δθ (with respect to the U-Hall sensor signal, same as U-BEMF zero crossing) to

align the current and Hall signal (shown in 图 20). ADAA mode is the recommended mode of operation where the

motor efficiency is maximized irrespective of motor parameters, load conditions, and motor speeds. ADAA mode

is only available in sinusoidal mode and 0° Hall sensor placement. The motors with 30° Hall placement may use

the fixed drive angle feature to achieve maximum system efficiency for a given application.

U phase voltage

U phase current

U phase Hall signal

U phase BEMF

û§

图 20. Adaptive Drive Angle Adjustment

For sinusoidal mode and 0° Hall sensor placement, if DAA pin is connected to GND, voltage driving angle will be

fixed at 10°. If DAA pin is connected to VINT, voltage driving angle will be fixed at 5°.

For sinusoidal mode and 30° Hall sensor placement, if DAA is floating, voltage drive angle will be fixed at 0°.

DAA pin is connected to GND, voltage driving angle will be fixed at 10°. If the DAA pin is connected to VINT,

voltage driving angle will be fixed at 5°.

In trapezoidal operation mode, DAA input is ignored and always control the output based on 表 2.

表 4 shows the DRV10970 operation modes with DAA and CMT_MOD configurations.

表 4. DAA and CMT_MOD Configurations

MOTOR

TYPE

HALL

PLACEMENT

MODE

DAA = FLOATING

DAA = GND

DAA = VINT

COMMENTS

The Trapezoidal motor with 0° Hall placement

may use 30 degree Hall delay (OTP setting) to

achieve optimum driving.

CMT_MOD =

floating

Trapezoidal

30°

0°

Trapezoidal mode, DAA signal is ignored.

CMT_MOD =

GND

BEMF zero crossing and Hall crossing will be

in-sync.

ADAA

10° drive angle

5° drive angle

Sinusoidal

The drive angle is specified with respect to

BEMF zero crossing. When measured with

respect to Hall-U signal, add 30°.

CMT_MOD =

VINT

30°

0° drive angle

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9 Application and Implementation

注

Information in the following applications sections is not part of the TI component

specification, and TI does not warrant its accuracy or completeness. TI’s customers are

responsible for determining suitability of components for their purposes. Customers should

validate and test their design implementation to confirm system functionality.

9.1 Application Information

9.1.1 Hall Sensor Configuration and Connections

Hall sensors must be connected to the DRV10970 to provide the feedback of the motor position. The DRV10970

Hall sensor input circuit is capable of interfacing with a variety of Hall sensors, and with two different ways of Hall

sensor placement, which are 0° placement and 30° placement.

Typically, a Hall element is used, which outputs a differential signal on the order of 100 mV or higher. The VINT

regulator can be used for powering the Hall sensors, which eliminates the need for an external regulator. The

Hall elements can be connected in serial or parallel as shown in 图 21 and 图 22.

VINT

Hall

U_HP

C_H

U_HN

Hall

DRV10970

V_HP

C_H

V_HN

Hall

W_HP

C_H

W_HN

图 21. Serial Hall Element Connection

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Application Information (接下页)

VINT

Hall

U_HP

U_HN

VINT

C_H

VINT

Hall

DRV10970

V_HP

V_HN

C_H

Hall

W_HP

W_HN

C_H

图 22. Parallel Hall Element Connection

Noise on the Hall signal degrades the commutation performance of the device. Therefore, take utmost care to

minimize the noise while routing the Hall signals to the device inputs. The device internally has fixed time hall

filtering of about 320 µs. To further minimize the high-frequency noise, a noise filtering capacitor may be

connected across x_HP and x_HN pins as shown in 图 21 and图 22. The value of the capacitor can be selected

such that the RC time constant is in the range of 0.1 to 2 µs. For example, Hall sensor with internal impedance

(between Hall output to ground) of 1 kΩ, C_Hvalue is 1 µF for 1-µs time constant.

Some motors integrate Hall sensors that provide logic outputs with open-drain type. These sensors can also be

used with the DRV10970, with circuits shown in 图 23. The negative (x_HN) inputs are biased to 2.5 V by a pair

of resistors between VINT and ground. For open-drain type Hall sensors, an additional pullup resistor to supply is

needed on the positive (x_HP) input, where VINT is used again. The VINT output may be used to supply power

to the Hall sensors as well.

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Application Information (接下页)

VINT

VINT / 2

U_HP

U_HN

Hall IC

VINT

VINT / 2

DRV10970

V_HP

V_HN

Hall IC

VINT

VINT / 2

Hall

W_HP

W_HN

VINT / 2

图 23. Hall IC Connection

The correspondence between the phase U, V, W and the Hall signal U, V, W needs to follow the DRV10970

definition, which is:

1. Phase U is leading phase W by 120°, phase W is leading phase V by 120°. The Hall signal positive output is

aligned with respective phase BEMF. Choose FR = 1 and 0° placement option (see 图 24).

2. Phase U is leading phase V by 120°, phase V is leading phase W by 120°. The Hall signal positive output is

aligned with respective phase BEMF in the opposite direction. Choose FR = 0 and 0° placement option (see

图 25).

3. Phase U is leading phase W by 120°, phase W is leading phase V by 120°. The Hall signal positive output is

30° lagging of respective phase BEMF. Choose FR = 1 and 30° placement option (see 图 26).

4. Phase U is leading phase V by 120°, phase V is leading phase W by 120°. The Hall signal positive output is

30° leading of respective phase BEMF. Choose FR = 0 and 30° placement option (see 表 2 and 图 29).

The correspondence and sequency is also applied to applications using open-drain output Hall ICs. 图 28 is an

example of FR = 0, and 30° placement condition.

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Application Information (接下页)

Phase BEMF

U_HP

Hall element output

(U)

U_HN

V_HP

Hall element output

(V)

V_HN

W_HN

Hall element output

(W)

W_HP

FR = 1

Hall placement = 0 degree

Differential output Hall element

图 24. Correspondence Between Motor BEMF and Hall Signal

(FR = 1, 0° Placement)

Phase BEMF

U_HN

U_HP

Hall element output

(U)

V_HP

Hall element output

(V)

V_HN

W_HN

Hall element output

(W)

W_HP

FR = 0

Hall placement = 0 degree

Differential output Hall element

图 25. Correspondence Between Motor BEMF and Hall Signal

(FR = 0, 0° Placement)

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Application Information (接下页)

ꢀhase .9ꢁC

30ö

Ü_Iꢀ

Ü_Ib

30ö

Iall element output

(Ü)

ë_Iꢀ

Iall element output

(ë)

ë_Ib

í_Ib

í_Iꢀ

Iall element output

(í)

Cw = 1

Iall placement = 30 degree

5ifferential output Iall element

图 26. Correspondence Between Motor BEMF and Hall Signal

(FR = 1, 30° Placement)

Phase BEMF

30|

U_HN

U_HP

Hall element output

(U)

V_HP

V_HN

W_HN

Hall element output

(V)

Hall element output

(W)

W_HP

FR = 0

Hall placement = 30°

Differential output Hall element

图 27. Correspondence Between Motor BEMF and Hall Signal

(FR = 0, 30° Placement)

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Application Information (接下页)

Phase BEMF

30|

Hall IC output (U)

Hall IC output (V)

Hall IC output (W)

FR = 1

Hall placement = 30 degree

OC output Hall IC

图 28. Correspondence Between Motor BEMF and Hall Signal

(FR = 1, 30° Placement, Hall IC)

Phase BEMF

30|

Hall IC output (U)

Hall IC output (V)

Hall IC output (W)

FR = 0

Hall placement = 30°

OC output Hall IC

图 29. Correspondence Between Motor BEMF and Hall Signal

(FR = 0, 30° Placement, Hall IC)

If the motor terminal definition is different from the previous description, rename the motor phase U, V, W, or the

Hall U, V, W, or swap the positive and negative of the Hall sensor output to make it match.

Use these tips to find the correct U, V, and W phases and the respective Hall sensors:

1. Assume motor phases and Hall outputs do not have labels. If named, remove them.

2. Label A, B, C to the motor terminals (phases). Label Da and Db, Ea and Eb, Fa and Fb to the Hall output

pairs. If Hall ICs are used, just label the digital outputs as D, E, F.

3. Use three 10-kΩ resistors, connect them to motor terminals - A, B, C with star connection. The center is

called COM.

4. Provide power to the Hall sensors.

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Application Information (接下页)

5. Use 4 channel Scope to observe signals. Connect probe -1, 2, 3 to A, B, C terminals of the motor (phases),

probe-4 connects to Hall Da (or D). Name the probe 1 (terminal-A) as U-phase. (see 图 30)

6. Turn the rotor manually in clock-wise direction. If the waveform on probe-1 (U-phase) is leading probe-2

(terminal-B) by 120°, name the terminal-B as phase W and terminal-C as phase V. Else if waveform on the

probe-2 is leading probe 1 (U) by 120°, terminal-B as V, terminal-C as W. At this stage all three phases of

the motor are identified.

7. Motor manufacturers have two popular Hall placement options. The first is 0° Hall placement (BEMF and Hall

signals are in-phase) and the second is 30° Hall placement (BEMF leads Hall signal by 30°). If the probe-4 is

in-phase (or lagging 30°) with phase-U, name Da as Hall U positive (U_HP), Db as Hall U negative (U_HN).

If probe-4 is in-phase with phase U (or lagging 30°), but inverted polarity, name Da as U_HN, Db as U_HP. If

the probe-4 is not in-phase (or lagging 30°) with respect to U but aligns with phase-V or W, name accordingly

as V_HP/V_HN or W_HP/W_HN. Repeat this step to map Ea/Eb and Fa/Fb in the same way. By end of this

step, all three sets of Hall signals are mapped to respective phase signals - phase U & Hall U_HP/HN, phase

V & Hall V_HP/V_HN and phase W and W_HP/W_HN. Care should be taken while judging 30° Hall

placement, sometimes 30° and 60° look alike. If U phase is leading Hall Da by 60°, there will be another

phase (V or W) with in-phase or lagging by 30° relationship. Hence it's important to check all three phases

before concluding.

8. When Hall ICs are used, if the Hall D is in-phase or lagging 30° with respect to phase U but inverted polarity,

name the Hall D output as U_HN, and 2.5-V reference voltage to U_HP. If Hall D is leading 30°, then turn the

rotor in counter clock-wise direction and map remaining E & F Hall outputs.

9. After phase UVW and Hall UVW positive negative are identified, manually rotate the motor again, check if

the result matches 图 24 and 图 25 (0° placement) or 图 26 and 图 25 (30° placement).

10. Connect U,V,W and Hall U,V,W to the DRV10970, with the FR = 1, it should rotate with direction you

manually spun it. Connect FR = 0, the motor will spin in the other direction.

Scope

Hall Eb

Da Hall

Hall Fb

图 30. Motor Measurement

DRV10970

ZHCSES6A –FEBRUARY 2016–REVISED MARCH 2016

www.ti.com.cn

9.2 Typical Application

VCC VCC

R_FG

R_RD

C_SW

FG RD

CPP CPN

VCP

C_VCP

C_VM

VINT

GND

C_VINT

VINT/VCC

R_HALL

GND/VINT

GND/VINT/FLOATING

GND/VINT

BRKMOD

DAA

U_HP

U_HN

V_HP

V_HN

W_HN

W_HP

CMTMOD

U_HALL

RETRY

V_HALL

W_HALL

C_RETRY

PWM

R_CS

图 31. Typical Application Schematic

9.2.1 Design Requirements

表 5 gives design input parameters for system design.

表 5. Design Parameters

DESIGN PARAMETER

Supply voltage

EXAMPLE VALUE

5 to 18 V

Continuous operation current

Peak current

0 to 1 A

1.5 A

Hall sensor differential output peak >40 mV

PWM input frequency

PWM duty cycle

15 to 100 kHz

0% to 100%

9.2.2 Detailed Design Procedure

•

Refer to Design Requirements and make sure the system meets the recommended application range.

Refer to Hall Sensor Configuration and Connections and make sure correct phases and corresponding hall

signals are identified.

•

Refer to Hall Sensor Configuration and Connections and make sure hall signals are connected accurately.

Build your hardware based on Layout Guidelines.

Connect the device into system and validate your system.

DRV10970

www.ti.com.cn

ZHCSES6A –FEBRUARY 2016–REVISED MARCH 2016

9.2.3 Application Curves

U-Phase

V-Phase Current

6 cycles Trapezoidal Commutation

2-steps

Commutation

Align State

Sinusoidal Commutation

U-Phase

Current

U-Phase Current

图 32. Three Hall Start-up Sequence

图 33. Single Hall Start-up Sequence

DRV10970

ZHCSES6A –FEBRUARY 2016–REVISED MARCH 2016

www.ti.com.cn

10 Power Supply Recommendations

The DRV10970 is designed to operate from an input voltage supply (VM) range between 5 and 18 V. Place a 10-

µF ceramic capacitor rated for VM as close as possible to the DRV10970.

11 Layout

11.1 Layout Guidelines

The VM terminal should be bypassed to GND using a low-ESR ceramic bypass capacitor with a recommended

value of 10-µF rated for VM. Place this capacitor as close as possible to the VM pin with a thick trace or ground

plane connection to the device GND pin.

The C_RETRYcapacitor should be placed as close to the RETRY pin as possible with a thick trace or ground plane

connection to the device GND pin.

A low-ESR ceramic capacitor must be placed in between the CPN and CPP pins. TI recommends a value of 0.1-

µF rated for VM. Place this component as close as possible to the pins.

A low-ESR ceramic capacitor must be placed in between the VM and VCP pins. TI recommends a value of 1-µF

rated for 16 V. Place this component as close as possible to the pins.

Bypass VINT to ground with 2.2-µF ceramic capacitors rated for 10 V. Place these bypassing capacitors as close

to the pins as possible.

Because the GND pin carries motor current, take utmost care while planning grounding scheme, keep the ground

potential difference between any two points less than 100 mV.

11.2 Layout Example

Logic High

3.3 kΩ

DAA

U_HP

U_HN

V_HP

V_HN

W_HP

W_HN

VCP

RETRY

BRKMOD

CMTMOD

PWM

GND

3.3 kΩ

GND

2. 2µF

1µF

CPP

VINT

0. 1µF

CPN

Motor

Phase W

Motor

Phase U

Motor

Phase V

GND

图 34. Layout Schematic

DRV10970

www.ti.com.cn

ZHCSES6A –FEBRUARY 2016–REVISED MARCH 2016

12 器件和文档支持

12.1 社区资源

The following links connect to TI community resources. Linked contents are provided "AS IS" by the respective

contributors. They do not constitute TI specifications and do not necessarily reflect TI's views; see TI's Terms of

Use.

TI E2E™ Online Community TI's Engineer-to-Engineer (E2E) Community. Created to foster collaboration

among engineers. At e2e.ti.com, you can ask questions, share knowledge, explore ideas and help

solve problems with fellow engineers.

Design Support TI's Design Support Quickly find helpful E2E forums along with design support tools and

contact information for technical support.

12.2 商标

PowerPAD, E2E are trademarks of Texas Instruments.

All other trademarks are the property of their respective owners.

12.3 静电放电警告

这些装置包含有限的内置 ESD 保护。存储或装卸时，应将导线一起截短或将装置放置于导电泡棉中，以防止 MOS 门极遭受静电损

伤。

12.4 Glossary

SLYZ022 — TI Glossary.

This glossary lists and explains terms, acronyms, and definitions.

DRV10970

ZHCSES6A –FEBRUARY 2016–REVISED MARCH 2016

www.ti.com.cn

13 机械、封装和可订购信息

以下页中包括机械、封装和可订购信息。这些信息是针对指定器件可提供的最新数据。这些数据会在无通知且不对

本文档进行修订的情况下发生改变。欲获得该数据表的浏览器版本，请查阅左侧的导航栏。

PACKAGE OPTION ADDENDUM

www.ti.com

10-Dec-2020

PACKAGING INFORMATION

Orderable Device

Status Package Type Package Pins Package

Eco Plan

Lead finish/

Ball material

MSL Peak Temp

Op Temp (°C)

Device Marking

Samples

Drawing

Qty

(1)

(2)

(3)

(4/5)

(6)

DRV10970PWP

ACTIVE

HTSSOP

PWP

RoHS & Green

NIPDAU

Level-2-260C-1 YEAR

-40 to 125

DRV10970

DRV10970PWPR

2000 RoHS & Green

NIPDAU

⁽¹⁾The marketing status values are defined as follows:

ACTIVE: Product device recommended for new designs.

LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect.

NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design.

PREVIEW: Device has been announced but is not in production. Samples may or may not be available.

OBSOLETE: TI has discontinued the production of the device.

⁽²⁾RoHS: TI defines "RoHS" to mean semiconductor products that are compliant with the current EU RoHS requirements for all 10 RoHS substances, including the requirement that RoHS substance

do not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, "RoHS" products are suitable for use in specified lead-free processes. TI may

reference these types of products as "Pb-Free".

RoHS Exempt: TI defines "RoHS Exempt" to mean products that contain lead but are compliant with EU RoHS pursuant to a specific EU RoHS exemption.

Green: TI defines "Green" to mean the content of Chlorine (Cl) and Bromine (Br) based flame retardants meet JS709B low halogen requirements of <=1000ppm threshold. Antimony trioxide based

flame retardants must also meet the <=1000ppm threshold requirement.

⁽³⁾MSL, Peak Temp. - The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature.

⁽⁴⁾There may be additional marking, which relates to the logo, the lot trace code information, or the environmental category on the device.

⁽⁵⁾Multiple Device Markings will be inside parentheses. Only one Device Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation

of the previous line and the two combined represent the entire Device Marking for that device.

(6)

Lead finish/Ball material - Orderable Devices may have multiple material finish options. Finish options are separated by a vertical ruled line. Lead finish/Ball material values may wrap to two

lines if the finish value exceeds the maximum column width.

Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. TI bases its knowledge and belief on information

provided by third parties, and makes no representation or warranty as to the accuracy of such information. Efforts are underway to better integrate information from third parties. TI has taken and

continues to take reasonable steps to provide representative and accurate information but may not have conducted destructive testing or chemical analysis on incoming materials and chemicals.

TI and TI suppliers consider certain information to be proprietary, and thus CAS numbers and other limited information may not be available for release.

In no event shall TI's liability arising out of such information exceed the total purchase price of the TI part(s) at issue in this document sold by TI to Customer on an annual basis.

Addendum-Page 1

PACKAGE OPTION ADDENDUM

www.ti.com

10-Dec-2020

Addendum-Page 2

PACKAGE MATERIALS INFORMATION

www.ti.com

5-Jan-2022

TAPE AND REEL INFORMATION

*All dimensions are nominal

Device

Package Package Pins

Type Drawing

SPQ

Reel

Pin1

Diameter Width (mm) (mm) (mm) (mm) (mm) Quadrant

(mm) W1 (mm)

DRV10970PWPR

HTSSOP PWP

2000

330.0

16.4

6.95

8.3

1.6

8.0

16.0

Pack Materials-Page 1

PACKAGE MATERIALS INFORMATION

www.ti.com

5-Jan-2022

*All dimensions are nominal

Device

Package Type Package Drawing Pins

HTSSOP PWP 24

SPQ

Length (mm) Width (mm) Height (mm)

350.0 350.0 43.0

DRV10970PWPR

2000

Pack Materials-Page 2

PACKAGE MATERIALS INFORMATION

www.ti.com

5-Jan-2022

TUBE

*All dimensions are nominal

Device

Package Name Package Type

PWP HTSSOP

Pins

SPQ

L (mm)

W (mm)

T (µm)

B (mm)

DRV10970PWP

530

10.2

3600

3.5

Pack Materials-Page 3

GENERIC PACKAGE VIEW

PWP 24

4.4 x 7.6, 0.65 mm pitch

PowerPAD^TMTSSOP - 1.2 mm max height

PLASTIC SMALL OUTLINE

This image is a representation of the package family, actual package may vary.

Refer to the product data sheet for package details.

4224742/B

www.ti.com

重要声明和免责声明

TI“按原样”提供技术和可靠性数据（包括数据表）、设计资源（包括参考设计）、应用或其他设计建议、网络工具、安全信息和其他资源，

不保证没有瑕疵且不做出任何明示或暗示的担保，包括但不限于对适销性、某特定用途方面的适用性或不侵犯任何第三方知识产权的暗示担

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这些资源可供使用 TI 产品进行设计的熟练开发人员使用。您将自行承担以下全部责任：(1) 针对您的应用选择合适的 TI 产品，(2) 设计、验

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TI 反对并拒绝您可能提出的任何其他或不同的条款。IMPORTANT NOTICE

邮寄地址：Texas Instruments, Post Office Box 655303, Dallas, Texas 75265

DRV10970 [TI]

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