dspin_l6470_marketing_pres

dSPIN Future in motion L6470 d dSPIN: breakthrough in motor control  ST is universally acknowledged as one of the leading semiconductor suppliers for motor control applications  ST is a pioneer and leader in smart power monolithic and integrated solutions for motor driver applications dSPIN represents the breakthrough solution for stepper motors in terms of performance with fast & easy design The 3 key benefits of dSPIN Outstanding position accuracy & smooth motion: - Resolution up to 128 microsteps/step - Very accurate sine-wave profile Voltage mode driving Fully digital motion management: - User-defined motion profiles easily programmable through SPI interface - No need of complex MCU routines Digital core High level of robustness against system faults: - Thermal, low bus voltage, overcurrent, stall detection - Easy design, reduced external components Full set of protection features dSPIN core SPI Power stage Current sensing Charge pump 16MHz oscillator 3V voltage regulator DAC and comparator Thermal protection ADC BCD 0.35 m, multi-power technology Monolithic digital microstepping driver Driving multi-purpose bipolar stepper motors Professional and label printers Factory automation, sewing machine ATM, POS, vending machines, gaming Stage lighting Medical, security Consumer, toys & robotics Voltage driving versus current driving With dSPIN  Resolution up to 128 steps/step  Very accurate and smooth sine-wave profile  Reduced resonances, mechanical noise and vibrations at low speed  Reduced torque and speed ripple at low speeds Innovative voltage mode driving  Noisy and jerky motion  Mechanical vibrations from abrupt current changes  Inaccurate positioning  Peak current different from target  Torque ripple and EMI difficult to control  Non constant switching frequency Outstanding position resolution and smooth motion Without dSPIN Standard current mode driving Standard current mode – more details 1. Abrupt current changes cause high mechanical vibrations Current mode tries to follow even non –ideal steps (reference voltage quantization and sampling) Noisy and jerky motion 3. Non-constant switching frequency Torque ripple and EMI are difficult to control 2. Peak current is controlled; average current value is different from target Inaccurate positioning dSPIN innovative control – more details Smooth current transient reduces mechanical vibrations Motor movement is soft and silent Constant switching frequency Torque ripple and EMI are controlled Average current is controlled Accurate positioning Digital core  Speed and position profiles required complex MCU routines Without dSPIN With dSPIN Fully digital motion management with simple commands  dSPIN does the tricky part, following simple high-level SPI commands Integration of digital core Acceleration and deceleration from 14.55 to 59590 step/s2 (14.55 step/s2 resolution) Maximum speed from 15.25 to 15610 step/s (15.25 step/s resolution) Integrated 22-bit register For up to 32768 full steps @128 µstep dSPIN manages the full motion profile Target speed, acceleration, deceleration Absolute/ relative positioning Advanced set of protection features  Programmable non dissipative overcurrent protection  Internal sensing of high- and low-side power  Two levels of over- temperature protection  Under voltage protection  Stall detection High level of robustness against system faults Iphase Vphase BEMF STALL threshold Normal operation Stall Example of stall detection High configurability for easy design  3 slew-rate levels programmable through SPI  180 V/μs, 290 V/μs and 530 V/μs  SPI daisy-chain configuration  4 clock configurations  Logic supply management Fully-digital control through SPI Absolute-position register can be set Motor electrical position (current microstep) can be set Speed profile parameters Torque control parameters BEMF compensation Phase resistance drift compensation ADC conversion result Overcurrent threshold Stall detection threshold Device configuration and status L6470 - Benefits summary  128 µsteps/ step is the best motion resolution ever reached in monolithic stepper motor drivers  Smoothness of motion is like never before  All with a single chip, avoiding more expensive and space consuming discrete solutions  Fully digital motion control allows the user to set a variety of features: target speed, acceleration/ deceleration, absolute and relative position, just to name a few  SPI interface allows user to easily insert desired parameters with no need for external microcontroller  A full set of protection functions confers robustness to the system and helps to further reduce the number of external components, the cost and complexity Voltage mode driving Digital core Full set of protections Outstanding performance with fast & easy design Motor control ICs P ow er S pi nP ow er S pi n D sp in D sp in d P e r f o r m a n c e & I n t e g r a t i o n Motor control system-on-chip C-SPIN digital controller + driver C S p in C S p in conceived to enable a wide variety of implementations Advanced control driving Making your designs easier Full design support: evaluation board, software, USB and IBU interface boards, application notes, available at: HTSSOP28 package (H type) – mass production PowerSO36 (PD Type) – samples already available Packages Support www.st.com/dspin Tools and documentation  Sales codes  L6470H - HTSSOP28 - Tray  L6470HTR - HTSSOP28 - Tape & Reel  L6470PD - PowerSO36 (Samples available now)  L6470 Documentation:  L6470 webpage  Datasheet  Application Note (AN3103)  Software: L6470 Evaluation tool software  Evaluation boards  EVAL6470H  EVAL6470PD  Control boards  STEVAL-PCC009V2 (and –V1)  dSPIN firmware library  Available at http://www.st.com/dspin