EVAL6472H STMicroelectronics

EVAL6472H Fully integrated stepper motor driver based on the L6472 Data brief Features Voltage range from 8 V to 45 V Phase current up to 3 A r.m.s. SPI with daisy chain feature SW input FLAG and BUSY LED indicators Adjustable supply voltage compensation Suitable for use in combination with STEVAL- PCC009V2 Description EVAL6472H The EVAL6472H demonstration board is a fully integrated microstepping motor driver. In combination with the STEVAL-PCC009V2 communication board and the dSPIN evaluation software, the board allows the user to investigate all the features of the L6472 device. In particular, the board can be used to regulate the L6472 parameters in order to fit application requirements. The EVAL6472H supports the daisy chain configuration making it suitable for the evaluation of the L6472 in the multi-motor applications. March 2012 Doc ID 022980 Rev 1 1/11 For further information contact your local STMicroelectronics sales office. www.st.com 11Board description EVAL6472H 1 Board description Table 1. EVAL6472H 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 Logic supply voltage (VREG) Internally supplied: 3 V typical Externally supplied: 3.3 V or 5 V Logic interface voltage (VDD) Internally supplied: VREG Low level logic input voltage 0 V (1) High level logic input voltage VDD Operating temperature -25 to +125 C L6472H thermal resistance junction-to-ambient 21 C/W typical 1. All logic inputs are 5 V tolerant. Figure 1. Jumpers and connectors location Power supply connector FLAG LED (8 V - 45 V) Application reference (Red) area JP1: VDD supply from BUSY LED master SPI connector (Amber) JP3: Daisy chain termination Slave SPI connector Master SPI connector JP2: VDD to VREG connection External switch connector (SW input) OSCIN/OSCOUT Motor supply voltage connector compensation partitioning regulation (ADCIN input) Phase A connector Phase B connector AM10289V1 2/11 Doc ID 022980 Rev 1