SLVUC77 June   2021 DRV8770

 

  1.   Trademarks
  2. 1Introduction
  3. 2PCB Connectors and Headers
  4. 3EVM operation
    1. 3.1 EVM connection
    2. 3.2 PWM Control with Potentiometers
  5. 4Revision History

2 PCB Connectors and Headers

The DRV8770EVM top PCB view and top assembly view are shown in Figure 2-2 and Figure 2-1. The board connectors and headers are listed and described in Table 2-1.


GUID-20210813-SS0I-HXS3-VTXC-WWPRXBG2SNKQ-low.png

Figure 2-1 DRV8770EVM PCB Top View
GUID-20210813-SS0I-7G6L-XTBK-XM0HFF3FBP4X-low.png Figure 2-2 DRV8770EVM Top Assembly View
Table 2-1 Board Component and Connector
Component Function
J1 PVDD supply connector
J7/J8 Output connector (MOTA, MOTB, PVDD, GND)
J2 Header for GVDD supply selection. If shorted between middle pin and "GVDD_INT" pin, GVDD will come from internal buck converter. If middle pin and "GVDD_EXT" is shorted, GVDD supply will come from external source connected to "GVDD_EXT" red test point.
J3 Connector for programming the MCU on the board.
J4 Header connected to J3 connector. Can manually place jumper wires to Spi-By-Wire pins on the LaunchPad
J5 Main control signal header test poin.
J6 Current sense amplifier (CSA) reference voltage selector header. Short middle pin to "AREF" to set REF voltage of CSA to 1.65-V (mainly used for bi-directional current sensing). Short middle pin to "GND" to set the CSA REF voltage to 0-V.
PVDD LED PVDD LED indication
GVDD LED GVDD LED indication
3.3 V LED 3.3 V LED indication
STATUS LED MCU STATUS LED indicator. Will turn ON when MCU is working
RP1 Potentiometer for adjusting duty cycle of INHA and INLA
RP2 Potentiometer for adjusting duty cycle of INHB and INLB
RP3 Unused potentiometer.