EVAL6474H STMicroelectronics

EVAL6474H Stepper motor driver mounting the L6474 Data brief Description The EVAL6474H demonstration board is a 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 L6474 device. The EVAL6474H supports the daisy chain configuration making it suitable for the evaluation of the L6474 in multi motor applications. EVAL6474H 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 FLAG LED indicator Suitable for use in combination with the STEVAL-PCC009V2 March 2015 DocID022766 Rev 2 1/10 For further information contact your local STMicroelectronics sales office. www.st.comBoard description EVAL6474H Board description Table 1. EVAL6474H specifications Parameter Value Supply voltage (VS) 8 to 45 V Maximum output current (each phase) 3 A rms Logic supply voltage (VREG) Externally supplied: 3.3 V internally supplied: 3 V typical Logic interface voltage (VDD) Externally supplied: 3.3 V or 5 V internally supplied: VREG Low level logic input voltage 0 V (1) High level logic input voltage VDD Operating temperature -25 to +125 C L6474H thermal resistance junction to ambient 21 C/W typical 1. All logic inputs are 5 V tolerant. Figure 1. Jumper and connector location Power supply connector FLAG LED Application reference (8 V - 45 V) (Red) area JP1: VDD supply from master SPI connector SYNC output JP3: Daisy chain termination Slave SPI Master SPI connector connector JP4: STCK to slave SPI connector JP5: DIR to slave SPI connector JP2: VDD to VREG connection ADCIN input regulation OSCIN/OSCOUT connector Phase A connector Phase B connector AM10269V1 2/10 DocID022766 Rev 2