Driver. DRV10970 Datasheet

DRV10970 Datasheet PDF


Part

DRV10970

Description

3-Phase Brushless DC Motor Driver

Manufacture

etcTI

Page 30 Pages
Datasheet
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DRV10970 Datasheet
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DRV10970
SLVSCU7A – FEBRUARY 2016 – REVISED MARCH 2016
DRV10970 Three-Phase Brushless DC Motor Driver
1 Features
1 Wide Power Supply Voltage Range: 5 to 18 V
• Integrated FETs: 1-A RMS, 1.5-A Peak Output
Phase/Winding Current
• Total Driver H + L RDSON: 400 mΩ
• Embedded 180° Sine-Wave and Trapezoidal
Commutations
• Ultra-Low Power Consumption in Sleep Mode
(35 µA)
• Adaptive Drive Angle Adjustment
• Three or Single Hall Sensor Option to Minimize
System Cost
• Motor Spin Direction Control
• Configurable for 30° Hall Placement or 0° Hall
Placement
• Adjustable Retry Timing after Motor Lock
• Programmable Current-Limit Function
• Tachometer – Motor Speed Information on Open-
Drain FG Pin
• Motor Lock Report on Open-Drain RD Pin
• Protection Features
– Supply (VM) Undervoltage Lockout
– Cycle-by-Cycle Current Limit
– Overcurrent Protection (OCP)
– Thermal Shutdown
– Motor Lock Detect and Report
2 Applications
• Cooling Fans
• Small Appliances
• General-Purpose BLDC Motor Driver
3 Description
The DRV10970 is an integrated three-phase BLDC
motor driver for home appliance, cooling fans, and
other general-purpose motor control applications. The
embedded intelligence, small form factor, and simple
pinout structure reduce the design complexity, board
space, and system cost. The integrated protections
improve the system robustness and reliability.
The output stage of DRV10970 consists of three half-
bridges with RDSON of 400 mΩ (H + L). Each half-
bridge is capable of driving up to 1-A RMS and 1.5-A
peak output current. When the device enters sleep
mode, it consumes typical 35 µA of current.
The advanced 180° sine-wave commutation algorithm
is embedded into the device and achieves high
efficiency, low torque ripple, and superior acoustic
performance. The adaptive driving angle adjustment
function achieves the most optimized efficiency
regardless of the motor parameters and load
conditions.
The DRV10970 is designed for either differential or
single-ended Hall sensor based applications. The
differential Hall signal inputs are detected by the
integrated comparators. The device supports three
Hall and single Hall based applications; the single
Hall sensor mode reduces the system cost by
eliminating two Hall sensors.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
DRV10970
TSSOP (24)
7.80 mm × 6.40 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Application Circuit
VCC VCC
CSW
RFG
R RD
C VCP
C VM
C VINT
GND/VINT
GND/VINT/FLOATING
GND/VINT/FLOATING
GND/VINT
CRETRY
RCS
CPP CPN
VCP
VM
VINT
GND
BRKMOD
DAA
CMTMOD
FR
RETRY
PWM
CS
FG RD
U
V
W
U_HP
U_HN
V_HP
V_HN
W_HN
W_HP
M
VINT/VCC
R HALL
U_HALL
V_HALL
W_HALL
1
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.

DRV10970 Datasheet
DRV10970
SLVSCU7A – FEBRUARY 2016 – REVISED MARCH 2016
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Revision History..................................................... 2
5 Description (continued)......................................... 3
6 Pin Configuration and Functions ......................... 3
7 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
8 Detailed Description ............................................ 11
8.1 Overview ................................................................. 11
8.2 Functional Block Diagram ....................................... 12
8.3 Feature Description................................................. 13
8.4 Device Functional Modes........................................ 16
9 Application and Implementation ........................ 21
9.1 Application Information............................................ 21
9.2 Typical Application ................................................. 28
10 Power Supply Recommendations ..................... 30
11 Layout................................................................... 30
11.1 Layout Guidelines ................................................. 30
11.2 Layout Example .................................................... 30
12 Device and Documentation Support ................. 31
12.1 Community Resources.......................................... 31
12.2 Trademarks ........................................................... 31
12.3 Electrostatic Discharge Caution ............................ 31
12.4 Glossary ................................................................ 31
13 Mechanical, Packaging, and Orderable
Information ........................................................... 32
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Original (February 2016) to Revision A
Page
• Changed device status to Production Data and released full datasheet................................................................................ 1
2 Submit Documentation Feedback
Product Folder Links: DRV10970
Copyright © 2016, Texas Instruments Incorporated


Features Datasheet pdf Product Folder Sample & Buy Technical Documents Tools & Software Support & Community DRV10970 SLVSCU7A – FEBRUA RY 2016 – REVISED MARCH 2016 DRV10970 Three-Phase Brushless DC Motor Driver 1 Features •1 Wide Power Supply Volt age Range: 5 to 18 V • Integrated FET s: 1-A RMS, 1.5-A Peak Output Phase/Win ding Current • Total Driver H + L RDS ON: 400 mΩ • Embedded 180° Sine-Wav e and Trapezoidal Commutations • Ultr a-Low Power Consumption in Sleep Mode ( 35 µA) • Adaptive Drive Angle Adjust ment • Three or Single Hall Sensor Op tion to Minimize System Cost • Motor Spin Direction Control • Configurable for 30° Hall Placement or 0° Hall Pl acement • Adjustable Retry Timing aft er Motor Lock • Programmable Current- Limit Function • Tachometer – Motor Speed Information on Open- Drain FG Pi n • Motor Lock Report on Open-Drain R D Pin • Protection Features – Suppl y (VM) Undervoltage Lockout – Cycle-b y-Cycle Current Limit – Overcurrent Protection (OCP) – Thermal Shutdown – Motor Lock Detect and Report 2 A.
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