DRV8312 Motor Driver Datasheet

DRV8312 Datasheet, PDF, Equivalent


Part Number

DRV8312

Description

Three-Phase PWM Motor Driver

Manufacture

etcTI

Total Page 30 Pages
Datasheet
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DRV8312
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DRV8312, DRV8332
SLES256E – MAY 2010 – REVISED DECEMBER 2014
DRV83x2 Three-Phase PWM Motor Driver
1 Features
1 High-Efficiency Power Stage (up to 97%) With
Low RDS(on) MOSFETs (80 mat TJ = 25°C)
• Operating Supply Voltage up to 50 V
(70-A Absolute Maximum)
• DRV8312 (Power Pad Down): up to 3.5-A
Continuous Phase Current (6.5-A Peak)
• DRV8332 (Power Pad Up): up to 8-A Continuous
Phase Current (13-A Peak)
• Independent Control of Three Phases
• PWM Operating Frequency up to 500 kHz
• Integrated Self-Protection Circuits Including
Undervoltage, Overtemperature, Overload, and
Short Circuit
• Programmable Cycle-by-Cycle Current Limit
Protection
• Independent Supply and Ground Pins for Each
Half Bridge
• Intelligent Gate Drive and Cross Conduction
Prevention
• No External Snubber or Schottky Diode is
Required
2 Applications
• BLDC Motors
• Three-Phase Permanent Magnet Synchronous
Motors
• Inverters
• Half Bridge Drivers
• Robotic Control Systems
3 Description
The DRV83x2 are
three-phase motor
protection system.
high-performance,
drivers with an
integrated
advanced
Because of the low RDS(on) of the power MOSFETs
and intelligent gate drive design, the efficiency of
these motor drivers can be up to 97%. This high
efficiency the use of smaller power supplies and
heatsinks, and the devices are good candidates for
energy-efficient applications.
The DRV83x2 require two power supplies, one at
12 V for GVDD and VDD, and another up to 50 V for
PVDD. The DRV83x2 can operate at up to 500-kHz
switching frequency while still maintaining precise
control and high efficiency. The devices also have an
innovative protection system safeguarding the device
against a wide range of fault conditions that could
damage the system. These safeguards are short-
circuit protection, overcurrent protection, undervoltage
protection, and two-stage thermal protection. The
DRV83x2 have a current-limiting circuit that prevents
device shutdown during load transients such as motor
start-up. A programmable overcurrent detector allows
adjustable current limit and protection level to meet
different motor requirements.
The DRV83x2 have unique independent supply and
ground pins for each half-bridge. These pins make it
possible to provide current measurement through
external shunt resistor and support half bridge drivers
with different power supply voltage requirements.
Device Information(1)
PART NUMBER
PACKAGE
BODY SIZE (NOM)
DRV8312
HTSSOP (44)
14.00 mm × 6.10 mm
DRV8332
HSSOP (36)
15.90 mm × 11.00 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
4 Simplified Application Diagram
GVDD
Controller
GVDD
1
GVDD_B
OTW
FAULT
PWM_A
RESET_A
PWM_B
OC_ADJ
GND
AGND
VREG
M3
M2
M1
PWM_C
RESET_C
RESET_B
VDD
GVDD_C
GVDD_A
BST_A
PVDD_A
OUT_A
GND_A
GND_B
OUT_B
PVDD_B
BST_B
NC
NC
GND
GND
GND_C
OUT_C
PVDD_C
BST_C
GVDD_C
PVDD
M
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.

DRV8312
DRV8312, DRV8332
SLES256E – MAY 2010 – REVISED DECEMBER 2014
www.ti.com
Table of Contents
1 Features .................................................................. 1
2 Applications ........................................................... 1
3 Description ............................................................. 1
4 Simplified Application Diagram............................ 1
5 Revision History..................................................... 2
6 Pin Configuration and Functions ......................... 4
7 Specifications......................................................... 6
7.1 Absolute Maximum Ratings ...................................... 6
7.2 ESD Ratings.............................................................. 6
7.3 Recommended Operating Conditions....................... 6
7.4 Thermal Information .................................................. 7
7.5 Dissipation Ratings ................................................... 7
7.6 Power Deratings (DRV8312) .................................... 7
7.7 Electrical Characteristics........................................... 8
7.8 Typical Characteristics .............................................. 9
8 Detailed Description ............................................ 10
8.1 Overview ................................................................. 10
8.2 Functional Block Diagram ....................................... 10
8.3 Feature Description................................................. 10
8.4 Device Functional Modes........................................ 14
9 Application and Implementation ........................ 16
9.1 Application Information............................................ 16
9.2 Typical Applications ................................................ 16
10 Power Supply Recommendations ..................... 23
10.1 Bulk Capacitance .................................................. 23
10.2 System Power-Up and Power-Down Sequence ... 23
10.3 System Design Recommendations ....................... 24
11 Layout................................................................... 25
11.1 Layout Guidelines ................................................. 25
11.2 Layout Example .................................................... 25
11.3 Thermal Considerations ........................................ 28
12 Device and Documentation Support ................. 29
12.1 Related Links ........................................................ 29
12.2 Trademarks ........................................................... 29
12.3 Electrostatic Discharge Caution ............................ 29
12.4 Glossary ................................................................ 29
13 Mechanical, Packaging, and Orderable
Information ........................................................... 29
5 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision D (January 2014) to Revision E
Page
• Added ESD Ratings table, Features Description section, Device Functional Modes, Application and Implementation
section, Power Supply Recommendations section, Layout section, Device and Documentation Support section................ 1
Changes from Revision C (October 2013) to Revision D
Page
• Changed GND_A, GND_B, and GND_C pins description to remove text "requires close decoupling capacitor to ground". 4
• Changed M2 pin description From: Mode selection pin ......................................................................................................... 4
• Added the THERMAL INFORMATION table .......................................................................................................................... 7
• Added text to the Overcurrent (OC) Protection section - "It is important to note..." ............................................................ 12
• Added text to the Overcurrent (OC) Protection section - "The values in Table 2 show typical..." ...................................... 12
Changes from Revision B (September 2013) to Revision C
Page
• Changed text in the Overcurrent (OC) Protection section From: "cause the device to shutdown immediately." To:
"cause the device to shutdown."........................................................................................................................................... 12
• Changed Changed text in the Overcurrent (OC) Protection section From: "RESET_B, and / or must be asserted."
To: ", and must be asserted" ................................................................................................................................................ 12
• Changed paragraph in the DEVICE RESET "A rising-edge transition..."............................................................................. 13
Changes from Revision A (July 2013) to Revision B
Page
• Changed the description of pin M3 From: AGND connection is recommended To: VREG connection is recommended..... 4
2 Submit Documentation Feedback
Copyright © 2010–2014, Texas Instruments Incorporated
Product Folder Links: DRV8312 DRV8332


Features Product Folder Sample & Buy Technical Documents Tools & Software Support & Community Reference Design DRV8312, D RV8332 SLES256E – MAY 2010 – REVISE D DECEMBER 2014 DRV83x2 Three-Phase PWM Motor Driver 1 Features •1 High-Eff iciency Power Stage (up to 97%) With Lo w RDS(on) MOSFETs (80 mΩ at TJ = 25° C) • Operating Supply Voltage up to 5 0 V (70-A Absolute Maximum) • DRV8312 (Power Pad Down): up to 3.5-A Continuo us Phase Current (6.5-A Peak) • DRV83 32 (Power Pad Up): up to 8-A Continuous Phase Current (13-A Peak) • Independ ent Control of Three Phases • PWM Ope rating Frequency up to 500 kHz • Inte grated Self-Protection Circuits Includi ng Undervoltage, Overtemperature, Overl oad, and Short Circuit • Programmable Cycle-by-Cycle Current Limit Protectio n • Independent Supply and Ground Pin s for Each Half Bridge • Intelligent Gate Drive and Cross Conduction Prevent ion • No External Snubber or Schottky Diode is Required 2 Applications • BLDC Motors • Three-Phase Permanent Magnet Synchronous M.
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