EVAL6470H STMicroelectronics

EVAL6470H Fully integrated stepper motor driver mounting the L6470 Data brief Description The EVAL6470H demonstration board is a fully integrated microstepping motor driver. In combination with the STEVAL-PCC009V2 communication board and the SPIN evaluation software, the board allows the user to investigate all the features of the L6470 device. In particular, the board can be used to check the voltage mode driving and to regulate the L6470 parameters in order to fit the application requirements. The EVAL6470H supports the daisy chain configuration making it suitable for the evaluation of the L6470 in multi motor applications. Features Voltage range from 8 V to 45 V Phase current up to 3 A . rms SPI with daisy chain feature Socket for external resonator or crystal SW input FLAG and BUSY LED indicators Adjustable supply voltage compensation Suitable to be used in combination with STEVAL-PCC009V2 March 2015 DocID022736 Rev 3 1/11 For further information contact your local STMicroelectronics sales office. www.st.comBoard description EVAL6470H Board description Table 1. EVAL6470H specifications Parameter Value Supply voltage (VS) 8 to 45 V Maximum output current (each phase) 3 A r.m.s. Externally supplied: 3.3 V, internally supplied: 3 V Logic supply voltage (VREG) (typ.) Externally supplied: 3.3 V or 5 V, internally supplied: Logic interface voltage (VDD) VREG Low level logic inputs voltage 0 V (1) High level logic input voltage VDD Operating temperature -25 to +125 C L6470H thermal resistance junction to ambient 21 C/W (typ.) 1. All logic inputs are 5 V tolerant. Figure 1. Jumpers and connectors location Power supply connector FLAG LED Application reference (8 V - 45 V) (Red) area BUSY LED JP1: VDD supply from (Amber) master SPI connector JP3: Daisy chain termination Slave SPI Master SPI connector connector JP2: VDD to VREG connection External switch connector (SW input) Motor supply voltege compensation partitioning regulation OSCIN/OSCOUT (ADCIN input) connector Phase A connector Phase B connector AM11330v1 2/11 DocID022736 Rev 3