LV8968BBGEVB ON Semiconductor

LV8968BB LV8968BB Evaluation Board User s Manual Overview The LV8968BB evaluation board (EVB) provides a comprehensive platform to evaluate the LV8968BB functionalities for industrial and www.onsemi.com automotive applications. Maximum recommended power level is 250W. Various optional periphery is included to support motor control implementations from simple sensor less BEMF commutation, to complex field oriented algorithms. A microcontroller EVAL BOARD USERS MANUAL is NOT provided with this kit to allow customers to utilize their favorite solutions. The kit can be used as a shield to an Arduino DUE board. Features General purpose Automotive 3Phase Gate Driver for 8 V to 25 V Applications Power MOSFET: 40 V, 85 A, 5.7 m Interface to Microcontroller Plugin Interface for Arduino Due Interface for Other Microcontrollers Required: 20 V or Greater Power Supply with >10 A Output Current Arduino Due or Alternative Microcontroller Board with 3 or more PWM Generators 15 or more Digital IO Pins 6 Analog IO Pins Figure 1. LV8968BB Evaluation Board 50pin Ribbon Cable and Connector 3 Phase PMSM Motor with 12 V Nominal Voltage and up to 200 W Power Optional Periphery 7.5 V Regulator for Arduino Due or Other Microcontrollers Dual Current Sense Amplifier for Triple Shunt Current Sensing Star Point Comparator for BEMF Sensing Algorithms Low Voltage Charge Pump for Operation below 8 V PWM Oscillator plus Potentiometer for Speed Control Utilizing the PWM Interface of the LV8968 Two Undedicated Pushbutton Switches for Microcontroller Use Semiconductor Components Industries, LLC, 2016 1 Publication Order Number: July, 2020 Rev. 2 EVBUM2574/DLV8968BB Figure 2. EVB Description DETAILED DESCRIPTION Power Up Initial Testing Table 1. POWER SUPPLY CURRENT The LV8968 EVB is designed to operate at 12 V (typ) with Power up an operating voltage range from 8 V to 25 V. The power procedure Effect Supply Current supply should be able to supply enough current to run the Apply 12 V (typ) VS LEDs turns 11 mA intended motor. If connected to an appropriate power supply at J2 or J3 green, 7.5 V supply either via the power Jack connector (J3), or the wire clamps comes active and 7.5 V LED turns (J2), the green VS LED and 7.5 V supply LED will light up. green Now it is possible to activate the LV8968 thought its Flip Wake switch V3RO and V3RI 30 mA WAKE pin using the red switch (SW1) in the center. The IC SW1 supply 3.3 V. will power up with its default settings (for details consult the VCC supply comes LV8968 Datasheet) and put out 3.3 V on its VCC supply active and VCC LED turns green. (green VCC LED). The default settings are configured such that a microcontroller can instantly drive a motor. The IC Reverse Polarity Protection and Power Surges will react to a high on the control lines and drive the corresponding power stage. Without a microcontroller to tell The LV8968 EVB includes two reverse polarity it what to do however, the LV8968 cannot accomplish much. protection circuits: Before proceeding further it is therefore necessary to power Power jack connector J3 features a reverse polarity the EVB down and connect an appropriate microcontroller. zener diode which is rated 3.9 A max. Power surges during motor braking or regeneration will not be fed www.onsemi.com 2