L6482HTR STMicroelectronics

L6482 Microstepping motor controller with motion engine and SPI Datasheet - production data Applications Bipolar stepper motor Description The L6482 device, realized in analog mixed signal technology, is an advanced fully integrated solution suitable for driving two-phase bipolar HTSSOP38 stepper motors with microstepping. It integrates a dual full bridge gate driver for N-channel MOSFET power stages with Features embedded non dissipative overcurrent protection. Thanks to a new current control, a 1/16 Operating voltage: 7.5 V - 85 V microstepping is achieved through an adaptive Dual full bridge gate driver for N-channel decay mode which outperforms traditional MOSFETs implementations. The digital control core can generate user defined motion profiles with Fully programmable gate driving acceleration, deceleration, speed or target Embedded Miller clamp function position easily programmed through a dedicated Programmable speed profile register set. All application commands and data registers, including those used to set analog Up to 1/16 microstepping values (i.e. current protection trip point, deadtime, Advanced current control with auto-adaptive PWM frequency, etc.) are sent through a standard decay mode 5-Mbit/s SPI. A very rich set of protections Integrated voltage regulators (thermal, low bus voltage, overcurrent and motor stall) makes the L6482 device bullet proof, as SPI interface required by the most demanding motor control Low quiescent standby currents applications. Programmable non dissipative overcurrent protection Overtemperature protection Table 1. Device summary Order code Package Packaging L6482H HTSSOP38 Tube L6482HTR HTSSOP38 Tape and reel March 2015 DocID023768 Rev 6 1/73 This is information on a product in full production. www.st.comContents L6482 Contents 1 Block diagram 8 2 Electrical data 9 2.1 Absolute maximum ratings . 9 2.2 Recommended operating conditions 10 2.3 Thermal data 10 3 Electrical characteristics 11 4 Pin connection . 16 Pin list 16 5 Typical applications 18 6 Functional description 19 6.1 Device power-up . 19 6.2 Logic I/O 19 6.3 Charge pump 19 6.4 Microstepping 20 Automatic Full-step and Boost modes 21 6.5 Absolute position counter . 22 6.6 Programmable speed profiles . 22 6.7 Motor control commands . 23 6.7.1 Constant speed commands 23 6.7.2 Positioning commands 23 6.7.3 Motion commands . 24 6.7.4 Stop commands . 25 6.7.5 Step-clock mode 25 6.7.6 GoUntil and ReleaseSW commands . 25 6.8 Internal oscillator and oscillator driver . 26 6.8.1 Internal oscillator 26 6.8.2 External clock source . 26 6.9 Overcurrent detection 27 2/73 DocID023768 Rev 6