ON THE ABOVE I WOULD LIKE TO NO , THAT CAN THE PART BE PARRALLELED TO INCREASE OUPUT POWER AND IF I HAVE LETS SAY 5 UNITS ON THE SAME BOARD ALL PINS ARE PARRALLELED INPUTS AND OUTPUTS AS WELL SHOULD I USE A SMALL INPUT RESISTOR ON ALL OF THE INPUT LINES EVEN THOU THEY ARE SHARING THE SAME SIGNALS( IN1 THRU IN4 LETS SAY A 1 K OHM IN SERIES WIITH ALL THE LINES , I MEAN IF I HAVE FOUR UNITS ON THE BOARD ALL INPUTS WILL BE BUFFERED BY A 1K, SO THATS 16 PCS TOTAL ) ENABLE EN1 THRU EN4 ALL LINES TIED TOGETHER WITH ONE 1K RESISTOR . , THE FAULT PINS EACH UNIT WILL HAVE A 10 K PULLUP , ONE PER DEVICE SO YOU WILL HAVE 4 10K SO CONTROL OF THAT DEVICE THAT FAILED ARE HAS A FAULT CAN BE HANDLED, ALL UNITS WILL HAVE A .1UF CAP FROM THE VCP PIN TO THE BUS VOLTAGE EACH UNIT WILL HAVE A 10UF CAP AS CLOSE AS POSSIBLE TO EACH UNIT.
ALL OUTPUTS WILL BE BUFFERED WITH A .1 OHM 3WATT CURRENT SENSE RESISTOR IN SERIES WITH EACH OUTPUTAND THAN ALL THE OUTPUTS ARE GROUPED TO THE SELECTED TERMINAL FOR FORWARD AND REVERSE OPERATION.
THE SLEEP AND RESET PIN WILL BE PULLED HIGH WITH A 100K RESISTOR AND THE TERMINALS CAN BE TOGGLED TO SHUTDOWN THAT DRIVER IF A FAULT CONDITION APPEARS.
THIS WILL BE A SINGLE ENDED APPLICATION WHERE THE BUS VOLTAGE WIIL BE 35 VDC MAX AND 27.5 VDC NORMAL AND 21.5 VDC WILL BE THE LOW VOLTAGE BEFORE THE VOLTAGE COMP SHUTDOWN ALL CONTROLLERS ARE THE POINT OF WHERE THEY ALL TURN ON .
ONCE THE BOARD IS BUILT UP A .200" THICK GAP PAD WILL BE PLACE ON TOP OF THE DRIVER DEVICES AND THE HEATSINK ON THE TOP OF THAT FOR THERMAL TRANSFER AWAY FROM THE DRIVER BOARD
THE PWM WILL VARY FROM 0% TO 100% / ARE 5% BEING MIN AND 95% BEING THE MAX THE PWM FREQ. WILL BE 50KHZ MAX, WHICH THE PWMS SIGNALS WILL SWITCH AUTOMACALLY FROM FRD. TO REV ARE FROM REV. TO FRD.
THIS APPLICATION WILL BE FOR TEST FIXTURES THat will test aircraft actuators wher the unit will have a brushed dc motor are brushless type, and drive actuators to full extend are full retract posistion
let me no
thanks