DRV8301
ZHCS121–AUGUST 2011
具有双重电流并联放大器的三相预驱动器和降压调节器
查询样品:DRV8301
特性
说明
•工作电源电压范围为8V –60V
DRV8301是用于三相电机驱动应用的门驱动器集成电路(IC)。它提供三个半桥驱动器，每个驱动器能够驱动• 2.3A 沉电流和1.7A 源门驱动电流能力
两个N 型MOSFET ，一个是高边驱动器，另外一个是低•具有可调节增益和抵消补偿的集成双重并联电流放大器。
边驱动器。它支持高达2.3A 的沉电流和1.7A 源峰值电•集成降压变换器支持高达1.5A 的外部负载流并且只需要电压范围在8到60V 的单电源供电。•3或6PWM 输入的独立控制
DRV8301使用具有连续补充供电电路的引导门驱动器•支持100%的占空比的引导门驱动器以支持100%的占空比。当高侧FET 或者低侧FET 被放置在防止电流直通位置时，门驱动器使用自动握手模•可编程空载时间以避免外部FET 直通式。FET 的Vds 能感应过载电流以保护外部功率级。•用于减少电磁干扰(EMI)的转换速率控制•外部MOSFETs 的可编程过流保护为了准确测量电流值，DRV8301包括两个并联电流放•支持3.3V 和5V 数字接口大器。电流放大器支持双向电流设置并提供高达3V 的•SPI 接口
可调节输出补偿。
•
散热增强型56引脚TSSOP DCA 封装
DRV8301也是具有可调节输出和开关频率的集成开关模式降压转换器，它能够支持MCU 或者额外系统的供应用
电需要。降压电路能够驱动高达1.5A 的负载。•3相无刷DC 电机和永磁同步电机•呼吸机(CPAP)和泵S
PI 接口提供详细的故障报告和灵活的参数设定，例如•电动自行车，病床，轮椅选项有，电流并联放大器，门驱动器的转化率控制等。
•
切碎机电钻、搅拌机、
Figure 1.DRV8301Simplified Application Schematic
Plea be aware that an important notice concerning availability,standard warranty,and u in critical applications of Texas Instruments miconductor products and disclaimers thereto appears at the en
d of this data sheet.
SS_TR EN_BUCK PVDD2PVDD2
BST_BK PH PH
VDD_S PI BST_A GH_A SH_A GL_A SL_A BST_B GH_B SH_B GL_B SL_B BST_C GH_C SH_C GL_C SL_C SN1SP1SN2SP2PVDD1
吃糖长痘DRV8301
ZHCS121–AUGUST 2011
表格设置下拉多个选项The devices have limited built-in ESD protection.The leads should be shorted together or the device placed in conductive foam during storage or handling to prevent electrostatic damage to the MOS gates.
DEVICE INFORMATION
安全乡PIN ASSIGNMENT
The DRV8301is designed to fit the 56pin DCA package.Here is the pinout of the device.
DRV8301 ZHCS121–AUGUST2011
PIN FUNCTIONS苏幼珍
PIN
I/O(1)DESCRIPTION
NAME NO.
RT_CLK1I Resistor timing and external clock for buck regulator.Resistor should connect to GND(power pad)with
very short trace to reduce the potential clock jitter due to noi.
COMP2O Buck error amplifier output and input to the output switch current comparator.
VSENSE3I Buck output voltage n pin.Inverting node of error amplifier.
PWRGD4I An open drain output with external pull-up resistor required.Asrts low if buck output voltage is low
due to thermal shutdown,dropout,over-voltage,or EN_BUCK shut down
OCTW5O Over current or/and over temperature warning indicator.This output is open drain with external pull-up
resistor required.Programmable output mode via SPI registers.
FAULT6O Fault report indicator.This output is open drain with external pull-up resistor required.
DTC7I Dead-time adjustment with external resistor to GND
SCS8I SPI chip lect
SDI9I SPI input
SDO10O SPI output
SCLK11I SPI clock signal
DC_CAL12I When DC_CAL is high,device shorts inputs of shunt amplifiers and disconnects loads.DC offt
calibration can be done through external microcontroller.
GVDD13P Internal gate driver voltage regulator.GVDD cap should connect to GND
CP114P Charge pump pin1,ceramic cap should be ud between CP1and CP2
CP215P Charge pump pin2,ceramic cap should be ud between CP1and CP2
EN_GATE16I Enable gate driver and current shunt amplifiers.Control buck via EN_BUCK pin.
INH_A17I PWM Input signal(high side),half-bridge A
INL_A18I PWM Input signal(low side),half-bridge A
INH_B19I PWM Input signal(high side),half-bridge B
INL_B20I PWM Input signal(low side),half-bridge B
INH_C21I PWM Input signal(high side),half-bridge C
INL_C22I PWM Input signal(low side),half-bridge C
DVDD23P Internal3.3V supply voltage.DVDD cap should connect to AGND.This is an output,but not specified
to drive external circuitry.
REF24I Reference voltage to t output of shunt amplfiiers with a bias voltage which equals to half of the
voltage t on this pin.Connect to ADC reference in microcontroller.
SO125O Output of current amplifier1
SO226O Output of current amplifier2
AVDD27P Internal6V supply voltage,AVDD cap should connect to AGND.This is an output,but not specified to
drive external circuitry.学雷锋志愿活动
AGND28P Analog ground pin
PVDD129P Power supply pin for gate driver,current shunt amplifier,and SPI communication.PVDD1is
independent of buck power supply,PVDD2.PVDD1cap should connect to GND
SP230I Input of current amplifier2(connecting to positive input of amplifier).Recommend to connect to ground
side of the n resistor for the best commom mode rejection.
SN231I Input of current amplifier2(connecting to negative input of amplifier).
SP132I Input of current amplifier1(connecting to positive input of amplifier).Recommend to connect to ground
side of the n resistor for the best commom mode rejection.
SN133I Input of current amplifier1(connecting to negative input of amplifier).
SL_C34I Low-Side MOSFET source connection,half-bridge C.Low-side V DS measured between this pin and
SH_C.
GL_C35O Gate drive output for Low-Side MOSFET,half-bridge C
SH_C36I High-Side MOSFET source connection,half-bridge C.High-side V DS measured between this pin and
PVDD1.
GH_C37O Gate drive output for High-Side MOSFET,half-bridge C
(1)KEY:I=Input,O=Output,P=Power
DRV8301
ZHCS121–
PIN FUNCTIONS(continued)
PIN
I/O(1)DESCRIPTION
NAME NO.
BST_C38P Bootstrap cap pin for half-bridge C
SL_B39I Low-Side MOSFET source connection,half-bridge B.Low-side V DS measured between this pin and
苏绣教程SH_B.动平衡有什么用
GL_B40O Gate drive output for Low-Side MOSFET,half-bridge B
SH_B41I High-Side MOSFET source connection,half-bridge B.High-side V DS measured between this pin and
PVDD1.
GH_B42O Gate drive output for High-Side MOSFET,half-bridge B
BST_B43P Bootstrap cap pin for half-bridge B
SL_A44I Low-Side MOSFET source connection,half-bridge A.Low-side V DS measured between this
pin and
SH_A.
GL_A45O Gate drive output for Low-Side MOSFET,half-bridge A
SH_A46I High-Side MOSFET source connection,half-bridge A.High-side V DS measured between this pin and
PVDD1.
GH_A47O Gate drive output for High-Side MOSFET,half-bridge A
BST_A48P Bootstrap cap pin for half-bridge A
VDD_SPI49I SPI supply pin to support3.3V or5V logic.Connect to either3.3V or5V.
PH50,51O The source of the internal high side MOSFET of buck converter
BST_BK52P Bootstrap cap pin for buck converter
PVDD253,54P Power supply pin for buck converter,PVDD2cap should connect to GND.
EN_BUCK55I Enable buck converter.Internal pull-up current source.Pull below1.2V to disable.Float to enable.
1644年Adjust the input undervoltage lockout with two resistors
SS_TR56I Buck soft-start and tracking.An external capacitor connected to this pin ts the output ri time.Since
the voltage on this pin overrides the internal reference,it can be ud for tracking and quencing.Cap
should connect to GND
GND57P GND pin.The expod power pad must be electrically connected to ground plane through soldering to (POWER PCB for proper operation and connected to bottom side of PCB through vias for better thermal
PAD)spreading.
DRV8301 ZHCS121–AUGUST2011 FUNCTION BLOCK DIAGRAM
AGND
GND PGND
