{"product_id":"pololu-a5984-stepper-motor-driver-carrier-fixed-1-5a-5v-1a-3-3v-blue-edition","title":"Pololu A5984 Stepper Motor Driver Carrier - Fixed 1.5A 5V \/ 1A 3.3V (Blue Edition)","description":"\u003cp\u003eThis is a \u003ca href=\"\/ru\/collections\/pololu\"\u003ePololu\u003c\/a\u003e carrier board for Allegro’s A5984 microstepping bipolar \u003ca href=\"\/ru\/collections\/stepper-motors-drivers\"\u003estepper motor\u003c\/a\u003e driver. It offers eight different microstep resolutions (down to 1\/32-step) and has over-current and over-temperature protection, and it features an adaptive decay algorithm that automatically optimizes the motor current waveform.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eThis version has a fixed current limit of 1.5A when VDD is 5V or 1A when VDD is 3.3V\u003c\/strong\u003e and a four-layer PCB for better thermal performance. \u003cstrong\u003eNote: additional cooling is required for operation at currents above 1.2 A per phase\u003c\/strong\u003e; this version is primarily intended for those who want 1 A per phase in 3.3V systems.\u003c\/p\u003e \u003cp\u003eWe are offering these carrier boards with support from Allegro Microsystems as an easy way to control bipolar \u003ca href=\"\/ru\/collections\/stepper-motors-drivers\"\u003estepper motors\u003c\/a\u003e using their A5984 DMOS Microstepping Driver with Translator and Overcurrent Protection; we therefore recommend careful reading of the \u003ca href=\"https:\/\/www.allegromicro.com\/-\/media\/files\/datasheets\/a5984-datasheet.pdf\"\u003eA5984 datasheet\u003c\/a\u003e before using this product.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eWe offer this carrier with, or without, headers pre-soldered\u003c\/strong\u003e - please select an option before adding to cart. This product ships with all surface-mount components - including the A5984 driver IC - installed as shown in the product picture.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003e\u003cspan style=\"color: #ff0000;\"\u003eWarning\u003c\/span\u003e:\u003c\/strong\u003e \u003cstrong\u003eThis product can get hot enough to burn you long before the chip overheats.\u003c\/strong\u003e Take care when handling this product and other components connected to it.\u003c\/p\u003e \u003ch2\u003eFeatures\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e8V to 40V supply voltage range (\u003cstrong\u003enote\u003c\/strong\u003e: these are \u003cstrong\u003enot recommended for use with 36V batteries\u003c\/strong\u003e, which can be well above nominal when fully charged)\u003c\/li\u003e \u003cli\u003eSimple step and direction control interface\u003c\/li\u003e \u003cli\u003eEight different step resolutions: \u003cul\u003e \u003cli\u003eFull-step with 100% current\u003c\/li\u003e \u003cli\u003eModified full-step (71% current)\u003c\/li\u003e \u003cli\u003e1\/2-step with 100% current\u003c\/li\u003e \u003cli\u003eModified 1\/2-step (circular)\u003c\/li\u003e \u003cli\u003e1\/4-step\u003c\/li\u003e \u003cli\u003e1\/8-step\u003c\/li\u003e \u003cli\u003e1\/16-step\u003c\/li\u003e \u003cli\u003e1\/32-step\u003c\/li\u003e \u003c\/ul\u003e \u003c\/li\u003e \u003cli\u003eAdaptive Percent Fast Decay (APFD) current control algorithm, also known as QuietStep, automatically adjusts the amount of fast decay to optimize the motor current waveform\u003c\/li\u003e \u003cli\u003eOver-temperature thermal shutdown, over-current protection, and under-voltage lockout\u003c\/li\u003e \u003cli\u003e2 oz copper PCB for improved heat dissipation; 2-layer (green PCB) and 4-layer (blue PCB) options available\u003c\/li\u003e \u003cli\u003eExposed solderable ground pad below the driver IC on the bottom of the PCB\u003c\/li\u003e \u003cli\u003eModule size, pinout, and interface match those of our Pololu A4988 stepper motor driver carriers in most respects\u003c\/li\u003e \u003c\/ul\u003e \u003ch2\u003eSpecifications\u003c\/h2\u003e \u003ctable width=\"496\"\u003e \u003ctbody\u003e \u003ctr\u003e \u003ctd width=\"312\"\u003e\u003cstrong\u003eMinimum operating voltage\u003c\/strong\u003e\u003c\/td\u003e \u003ctd width=\"184\"\u003e8V\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eMaximum operating voltage\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e40V\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eContinuous current per phase with VDD=5V\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e1.5A\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eContinuous current per phase with VDD=3.3V\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e1A\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eMinimum logic voltage\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e2.5V\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eMaximum logic voltage\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e5.5V\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eMicrostep resolutions\u003c\/strong\u003e\u003c\/td\u003e \u003ctd width=\"184\"\u003eFull with 100% current\u003cbr\u003efull with 70% current\u003cbr\u003enon-circular 1\/2, 1\/2, 1\/4, 1\/8, 1\/16, 1\/32\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eCurrent limit\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e​Fixed 1.5A@5V \/ 1A@3.3V\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eReverse voltage protection?\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eN\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eHeader pins\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003eNot included\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eSize\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e0.6″ × 0.8″\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e \u003ctd\u003e1.2 g\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003ch2\u003eUsing the driver\u003c\/h2\u003e \u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0176\/3274\/files\/Pololu_5346_wiring_diagram_1.jpg?v=1731584929\" alt=\"\"\u003e\u003c\/p\u003e \u003ch3\u003ePower connections\u003c\/h3\u003e \u003cp\u003eThe driver requires a motor supply voltage of 8 V to 40 V (absolute max) to be connected across VMOT and GND. This supply should be capable of delivering the expected stepper motor current.\u003c\/p\u003e \u003ch3\u003eMotor connections\u003c\/h3\u003e \u003cp\u003eFour, six, and eight-wire stepper motors can be driven by the A5984 if they are properly connected; \u003ca href=\"https:\/\/www.pololu.com\/product\/5346\/faqs\"\u003ean FAQ answer on the Pololu website\u003c\/a\u003e explains the proper wirings in detail.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eWarning\u003c\/strong\u003e: Connecting or disconnecting a stepper motor while the driver is powered can destroy the driver. (More generally, rewiring anything while it is powered is asking for trouble.)\u003c\/p\u003e \u003ch3\u003eStep (and microstep) size\u003c\/h3\u003e \u003cp\u003eStepper motors typically have a step size specification (e.g. 1.8° or 200 steps per revolution), which applies to full steps. A microstepping driver such as the A5984 allows higher resolutions by allowing intermediate step locations, which are achieved by energizing the coils with intermediate current levels. For instance, driving a motor in quarter-step mode will give the 200-step-per-revolution motor 800 microsteps per revolution by using four different current levels.\u003c\/p\u003e \u003cp\u003eThe resolution (step size) selector inputs (MS1, MS2, and MS3) enable selection from the eight step resolutions according to the table below. The driver defaults to full step with 100% current. For the microstep modes to function correctly, the current limit must be set low enough (see below) so that current limiting gets engaged. Otherwise, the intermediate current levels will not be correctly maintained, and the motor will skip microsteps.\u003c\/p\u003e \u003ctable width=\"499\"\u003e \u003ctbody\u003e \u003ctr\u003e \u003ctd width=\"64\"\u003e\u003cstrong\u003eMS1\u003c\/strong\u003e\u003c\/td\u003e \u003ctd width=\"64\"\u003e\u003cstrong\u003eMS2\u003c\/strong\u003e\u003c\/td\u003e \u003ctd width=\"64\"\u003e\u003cstrong\u003eMS3\u003c\/strong\u003e\u003c\/td\u003e \u003ctd width=\"307\"\u003e\u003cstrong\u003eMicrostep Resolution\u003c\/strong\u003e\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eLow\u003c\/td\u003e \u003ctd\u003eLow\u003c\/td\u003e \u003ctd\u003eLow\u003c\/td\u003e \u003ctd\u003eFull step with 100% current\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eLow\u003c\/td\u003e \u003ctd\u003eLow\u003c\/td\u003e \u003ctd\u003eHigh\u003c\/td\u003e \u003ctd\u003eHalf step with 100% current (also called non-circular half step)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eLow\u003c\/td\u003e \u003ctd\u003eHigh\u003c\/td\u003e \u003ctd\u003eLow\u003c\/td\u003e \u003ctd\u003e1\/16 step\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eLow\u003c\/td\u003e \u003ctd\u003eHigh\u003c\/td\u003e \u003ctd\u003eHigh\u003c\/td\u003e \u003ctd\u003e1\/32 step\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eHigh\u003c\/td\u003e \u003ctd\u003eLow\u003c\/td\u003e \u003ctd\u003eLow\u003c\/td\u003e \u003ctd\u003eModified full step (71% current)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eHigh\u003c\/td\u003e \u003ctd\u003eLow\u003c\/td\u003e \u003ctd\u003eHigh\u003c\/td\u003e \u003ctd\u003eModified half step (circular)\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eHigh\u003c\/td\u003e \u003ctd\u003eHigh\u003c\/td\u003e \u003ctd\u003eLow\u003c\/td\u003e \u003ctd\u003e1\/4 step\u003c\/td\u003e \u003c\/tr\u003e \u003ctr\u003e \u003ctd\u003eHigh\u003c\/td\u003e \u003ctd\u003eHigh\u003c\/td\u003e \u003ctd\u003eHigh\u003c\/td\u003e \u003ctd\u003e1\/8 step\u003c\/td\u003e \u003c\/tr\u003e \u003c\/tbody\u003e \u003c\/table\u003e \u003ch3\u003eControl inputs and status outputs\u003c\/h3\u003e \u003cp\u003eThe rising edge of each pulse to the STEP input corresponds to one microstep of the stepper motor in the direction selected by the DIR pin. Note that the STEP and DIR pins are not pulled to any particular voltage internally, so you should not leave either of these pins floating in your application. If you just want rotation in a single direction, you can tie DIR directly to VDD or GND.\u003c\/p\u003e \u003cp\u003eThe chip has thee different inputs for controlling its power states: RESET, SLEEP, and ENABLE. The RESET pin (RST) is floating by default; this pin must be high to enable the driver (it can be connected to the adjacent SLEEP pin or directly to a logic “high” voltage between 2 V and 5.5 V, or it can be dynamically controlled from a digital output of an MCU). The default state of the SLEEP (SLP) and ENABLE (EN) pins is to enable the driver (the carrier board pulls SLEEP up to VDD and pulls ENABLE down to GND). See the datasheet for more details.\u003c\/p\u003e \u003cp\u003eThe A5984 also features an open-drain FAULT (nFAULT) output that drives low whenever the driver detects an over-current fault. The carrier board pulls this pin up to VDD, so no external pull-up is necessary on the FAULT pin. Bringing RESET or SLEEP low clears a latched fault.\u003c\/p\u003e \u003ch3\u003eCurrent limiting\u003c\/h3\u003e \u003cp\u003eTo achieve high step rates, the motor supply is typically higher than would be permissible without active current limiting. For instance, a typical stepper motor might have a maximum current rating of 1 A with a 5 Ω coil resistance, which would indicate a maximum motor supply of 5 V. Using such a motor with 9 V would allow higher step rates, but the current must actively be limited to under 1 A to prevent damage to the motor.\u003c\/p\u003e \u003cp\u003eThe A5984 supports such active current limiting, and this version of the carrier has a fixed current limit set with on-board resistors. The current limit is proportional to the logic voltage, VDD; for this board, it is about 1.5A when VDD is 5 V or 1A when VDD is 3.3V. More generally, the current limit in amps relates to VDD in volts as follows:\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eCurrent Limit = VDD \/ 3.33\u003c\/strong\u003e\u003c\/p\u003e \u003cp\u003eYou will typically want to choose a current limit that is at or below the current rating of your stepper motor.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eNote: The coil current can be very different from the power supply current, so you should not expect the current measured at the power supply to match the current limit.\u003c\/strong\u003e The appropriate place to put your current meter is in series with one of your stepper motor coils. If the driver is in full-step 100% current or full-step 71% current modes, both coils will always be on and limited to 100% or 71% of the current limit setting, respectively. If your driver is in one of the microstepping modes, the current through the coils will change with each step, ranging from 0% to 100% of the set limit. See the A5984 datasheet for more information.\u003c\/p\u003e \u003ch3\u003ePower dissipation considerations\u003c\/h3\u003e \u003cp\u003eThe A5984 carrier has a maximum current rating of 2 A per coil, but the actual current you can deliver depends on how well you can keep the IC cool. The carrier’s printed circuit board is designed to draw heat out of the IC, but to supply more than approximately 1.2 A per coil, a heat sink or other cooling method is required. Operating this version with a fixed current limit of 1 A (i.e. with VDD = 3.3V) will generally not require any special cooling, but additional cooling might still be required for applications that limit heat dissipation, such as use in enclosed spaces or high ambient temperature conditions.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003e\u003cspan style=\"color: #ff0000;\"\u003eWarning\u003c\/span\u003e:\u003c\/strong\u003e This product can get hot enough to burn you long before the chip overheats. Take care when handling this product and other components connected to it.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003ePlease note that measuring the current draw at the power supply will generally not provide an accurate measure of the coil current.\u003c\/strong\u003e Since the input voltage to the driver can be significantly higher than the coil voltage, the measured current on the power supply can be quite a bit lower than the coil current (the driver and coil basically act like a switching step-down power supply). Also, if the supply voltage is very high compared to what the motor needs to achieve the set current, the duty cycle will be very low, which also leads to significant differences between average and RMS currents.\u003c\/p\u003e \u003cp\u003eAdditionally, please note that the coil current is a function of the set current limit, but it does not necessarily equal the current limit setting as the actual current through each coil changes with each microstep.\u003c\/p\u003e \u003ch2\u003eResources\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\u003ca href=\"https:\/\/www.pololu.com\/file\/0J2064\/a5984-stepper-motor-driver-carriers-dimensions.pdf\"\u003eDimensions\u003c\/a\u003e\u003c\/li\u003e \u003cli\u003e\u003ca href=\"https:\/\/www.pololu.com\/file\/0J2064\/a5984-stepper-motor-driver-carriers-dimensions.pdf\"\u003eSchematic\u003c\/a\u003e\u003c\/li\u003e \u003cli\u003e\u003ca href=\"https:\/\/www.pololu.com\/file\/0J2065\/a5984-stepper-motor-driver-carrier-models.zip\"\u003e3D Models\u003c\/a\u003e\u003c\/li\u003e \u003cli\u003e\u003ca href=\"https:\/\/www.pololu.com\/file\/0J2066\/md46a-md46b-drill.dxf\"\u003eDrill Guide\u003c\/a\u003e\u003c\/li\u003e \u003cli\u003e\u003ca href=\"https:\/\/www.allegromicro.com\/-\/media\/files\/datasheets\/a5984-datasheet.pdf\"\u003eA5984 datasheet\u003c\/a\u003e\u003c\/li\u003e \u003cli\u003e\u003ca href=\"https:\/\/www.youtube.com\/watch?feature=player_embedded\u0026amp;v=89BHS9hfSUk\"\u003eVideo: setting the current limit on Pololu stepper motor driver carriers\u003c\/a\u003e\u003c\/li\u003e \u003cli\u003e\u003ca href=\"https:\/\/www.allegromicro.com\/en\/products\/motor-drivers\/brush-dc-motor-drivers\/a5984\"\u003eAllegro product page for the A5984 DMOS Microstepping Driver\u003c\/a\u003e\u003c\/li\u003e \u003c\/ul\u003e \u003ch2\u003ePackage Contents\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e1x Pololu A5984 Stepper Motor Driver Carrier, Fixed 1.5A@5V \/ 1A@3.3V, Blue Edition \u003cstrong\u003e(with or without headers pre-soldered - select option before adding to cart)\u003c\/strong\u003e\n\u003c\/li\u003e \u003c\/ul\u003e","brand":"Pololu","offers":[{"title":"Without Headers","offer_id":50847129764113,"sku":"POL-5344","price":3.6,"currency_code":"USD","in_stock":false},{"title":"With Headers","offer_id":50847129796881,"sku":"POL-5345","price":4.5,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0901\/6285\/6209\/files\/pololu-a5984-stepper-motor-driver-carrier-fixed-1-5a-5v-1a-3-3v-blue-edition-pololu-pol-5344-72099699687809.jpg?v=1735207471","url":"https:\/\/abcd3032.myshopify.com\/ru\/products\/pololu-a5984-stepper-motor-driver-carrier-fixed-1-5a-5v-1a-3-3v-blue-edition","provider":"Tayyab Zak","version":"1.0","type":"link"}