DRV8434A

DRV8434A-Q1 Automotive Stepper Driver With Integrated Current Sense, 1/256 Microstepping, smart tune and Stall Detection using GPIO pins

1Features ?AEC-Q100QualifiedforAutomotive ?FunctionalSafety-Capable –Documentationavailabletoaidfunctionalsafety systemdesign ?PWMMicrosteppingStepperMotorDriver –SimpleSTEP/DIRInterface –Upto1/256MicrosteppingIndexer ?IntegratedCurrentSenseFunctionality –N

DRV8434A

具有集成式電流感應(yīng)和失速檢測功能的 48V、2.5A 雙極步進(jìn)電機(jī)驅(qū)動器（使用 GPIO 引腳）; ? PWM 微步進(jìn)電機(jī)驅(qū)動器 \n? 簡單的 STEP/DIR 接口\n? 最高 1/256 的微步進(jìn)分度器\n \n? 集成電流檢測功能 \n? 無需檢測電阻\n? ±4% 滿量程電流精度\n \n? 智能調(diào)優(yōu)紋波控制衰減\n? 使用 GPIO 引腳進(jìn)行失速檢測 \n? 工作電源電壓范圍為 4.5V 至 48V\n? 低 RDS(ON)：24V、25°C 時為 330mΩ HS + LS\n? 高電流容量：2.5A 滿量程、1.8A 均方根電流\n? 支持 1.8V、3.3V、5.0V 邏輯輸入\n? 低電流睡眠模式 (2μA)\n? 展頻時鐘，以降低 EMI\n? 小型封裝和外形尺寸 \n? 保護(hù)特性 \n? VM 欠壓鎖定 (UVLO)\n? 電荷泵欠壓 (CPUV)\n? 過流保護(hù) (OCP)\n? 無傳感器失速檢測\n? 開路負(fù)載檢測 (OL)\n? 熱關(guān)斷 (OTSD)\n? 故障調(diào)節(jié)輸出 (nFAULT);

DRV8434A 是一款適用于工業(yè)和消費(fèi)類應(yīng)用的步進(jìn)電機(jī)驅(qū)動器。該器件由兩個 N 溝道功率 MOSFET H 橋驅(qū)動器、一個微步進(jìn)分度器以及集成電流檢測功能完全集成。DRV8434A 最高可驅(qū)動 2.5A 滿量程輸出電流（取決于 PCB 熱設(shè)計）。\n\nDRV8434A 采用內(nèi)部電流檢測架構(gòu)，無需再使用兩個外部功率檢測電阻，可縮小 PCB 面積并降低系統(tǒng)成本。該器件使用內(nèi)部 PWM 電流調(diào)節(jié)方案，該方案采用智能調(diào)優(yōu)紋波控制衰減。智能調(diào)優(yōu)可通過自動調(diào)節(jié)實(shí)現(xiàn)出色的電流調(diào)節(jié)性能，并對電機(jī)變化和老化效應(yīng)進(jìn)行補(bǔ)償和減少電機(jī)的可聞噪聲。\n\n借助簡單的 STEP/DIR 接口，可通過外部控制器管理步進(jìn)電機(jī)的方向和步進(jìn)速率。這款器件可配置為多種步進(jìn)模式，從全步進(jìn)模式到 1/256 微步進(jìn)模式皆可。該器件通過專用的 nSLEEP 引腳提供低功耗睡眠模式。\n\nDRV8434A 采用先進(jìn)的失速檢測算法，該算法可通過兩個數(shù)字 IO 和一個模擬 IO 引腳配置，并且不需要 SPI 接口即可檢測失速。通過檢測電機(jī)失速，系統(tǒng)設(shè)計人員可以確定電機(jī)是否受阻，并根據(jù)需要采取措施，從而提高效率、防止損壞并降低可聞噪聲。其他保護(hù)特性包括：電源欠壓、電荷泵故障、過流、短路、開路負(fù)載和過熱保護(hù)。故障狀態(tài)通過 nFAULT 引腳指示。

DRV8434A

DRV8434A Stepper Driver With Integrated Current Sense, 1/256 Microstepping, smart tune and Stall Detection using GPIO pins

DRV8434A-Q1

DRV8434A-Q1 Automotive Stepper Driver With Integrated Current Sense, 1/256 Microstepping, smart tune and Stall Detection using GPIO pins

1Features ?AEC-Q100QualifiedforAutomotive ?FunctionalSafety-Capable –Documentationavailabletoaidfunctionalsafety systemdesign ?PWMMicrosteppingStepperMotorDriver –SimpleSTEP/DIRInterface –Upto1/256MicrosteppingIndexer ?IntegratedCurrentSenseFunctionality –N

DRV8434A-Q1

具有集成電流檢測和失速檢測功能的汽車級 48V 2.5A 雙極步進(jìn)電機(jī)驅(qū)動器; AEC-Q100 Qualified for Automotive\n \nFunctional Safety-Capable \n \nDocumentation available to aid functional safety system design\n \n\n \nPWM Microstepping Stepper Motor Driver \n \nSimple STEP/DIR Interface\n \nUp to 1/256 Microstepping Indexer\n \n\n \nIntegrated Current Sense Functionality \n \nNo Sense Resistors Required\n \n±4% Full-Scale Current Accuracy\n \n\n \nSmart tune ripple control decay\n \nStall Detection using GPIO pins\n \n4.5 to 48V Operating Supply Voltage Range\n \nLow RDS(ON): 330mΩ HS + LS at 24V, 25°C\n \nHigh Current Capacity: 2.5A Full-Scale, 1.8A rms\n \nSupports 1.8V, 3.3V, 5.0V Logic Inputs\n \nLow-Current Sleep Mode (2 μA)\n \nSpread spectrum clocking for low EMI\n \nSmall Package and Footprint\n \nProtection Features \n \nVM Undervoltage Lockout (UVLO)\n \nCharge Pump Undervoltage (CPUV)\n \nOvercurrent Protection (OCP)\n \nSensorless stall detection\n \nOpen Load Detection (OL)\n \nThermal Shutdown (OTSD)\n \nFault Condition Output (nFAULT);

The DRV8434-Q1 is a stepper motor driver for automotive applications. The device is fully integrated with two N-channel power MOSFET H-bridge drivers, a microstepping indexer, and integrated current sensing. The DRV8434-Q1 is capable of driving up to 2.5A full-scale output current (dependent on PCB thermal design).\n\nThe DRV8434-Q1 uses an internal current sense architecture to eliminate the need for two external power sense resistors, saving PCB area and system cost. The device uses an internal PWM current regulation scheme with smart tune ripple control decay. Smart tune automatically adjusts for optimal current regulation, compensates for motor variation and aging effects and reduces audible noise from the motor.\n\nA simple STEP/DIR interface allows an external controller to manage the direction and step rate of the stepper motor. The device can be configured in full-step to 1/256 microstepping. A low-power sleep mode is provided using a dedicated nSLEEP pin. \n\nThe DRV8434-Q1 features advanced stall detection algorithm configurable by two digital IO and one analog IO pins, and does not require an SPI interface to detect stall. By detecting motor stall, system designers can identify if the motor was obstructed and take action as needed which can improve efficiency, prevent damage and reduce audible noise. Other protection features include supply undervoltage, charge pump faults, overcurrent, short circuits, open load, and overtemperature. Fault conditions are indicated by the nFAULT pin.

DRV8434AQWRGERQ1

絲印：D8434AQ；Package：VQFN；DRV8434A-Q1 Automotive Stepper Driver With Integrated Current Sense, 1/256 Microstepping, smart tune and Stall Detection using GPIO pins

1Features ?AEC-Q100QualifiedforAutomotive ?FunctionalSafety-Capable –Documentationavailabletoaidfunctionalsafety systemdesign ?PWMMicrosteppingStepperMotorDriver –SimpleSTEP/DIRInterface –Upto1/256MicrosteppingIndexer ?IntegratedCurrentSenseFunctionality –N

DRV8434APWPR

DRV8434A Stepper Driver With Integrated Current Sense, 1/256 Microstepping, smart tune and Stall Detection using GPIO pins

DRV8434ARGER

絲印：DRV8434A；Package：VQFN；DRV8434A Stepper Driver With Integrated Current Sense, 1/256 Microstepping, smart tune and Stall Detection using GPIO pins

DRV8434AEVM

包裝：盒 功能：電機(jī)控制器/驅(qū)動器，步進(jìn) 類別：開發(fā)板，套件，編程器 評估和演示板及套件 描述：DRV8434A STEPPER DRIVERS WITH AN

DRV8434APWPR

Package：28-PowerTSSOP（0.173"，4.40mm Width）；包裝：卷帶（TR） 功能：驅(qū)動器 - 全集成，控制和功率級 類別：集成電路（IC） 電機(jī)驅(qū)動器，控制器 描述：IC MOTOR DRIVER