moco-oi401

moco-OI401

• 10V~35V operating voltage
• 8A peak current
• 3x or 6xPWM control
• 3-Phase low-side current sense
• Ø40mm round PCB
• 3xM2 mounting holes, P.C.D Ø35.5mm
• STM32G431CBU6 170 MHz MCU
• DRV8316C gate driver integrated FETs
• AS5047x magnetic encoder

Pinmap

Description	DRV8316	STM32	STM32 Func
PWM-A High	INHA	PA10	TIM1_CH3
PWM-B High	INHB	PA9	TIM1_CH2
PWM-C High	INHC	PA8	TIM1_CH1
PWM-A Low	INLA	PC15	TIM1_CH3N
PWM-B Low	INLB	PA12	TIM1_CH2N
PWM-C Low	INLC	PB13	TIM1_CH1N
Current sense A	SOA	PA5	ADC2_IN13
Current sense B	SOB	PA6	ADC2_IN3
Current sense C	SOC	PA7	ADC2_IN4
nEnable	DRVOFF	PB12
nFAULT	nFAULT	PB11
SPI SCLK	SCLK	PB3	SPI1
SPI MISO	SDI	PB4	SPI1
SPI MOSI	SDO	PB5	SPI1
SPI nCS DRV8316	nSCS	PB9
SPI nCS AS5047x	--	PB2
USART Tx	--	PA2	USART2
USART Rx	--	PA3	USART2
User LED 1 (Red)	--	PA0	Active LOW
User LED 2 (Blue)	--	PA1	Active LOW
5V indicator LED (Green)	--	--

Jumper

• SB1 (3.3V LDO Bypass)
  • ON: 3.3V LDO bypassed, 3.3V provided through the buck regulator of DRV8316.
  • OFF (Default): 3.3V provided through the LDO.
• SB2 (nSLEEP Reset)
  • ON: Connected DRV8316 nSLEEP pin to RESET button.
  • OFF (Default): Disconnected DRV8316 nSLEEP pin to RESET button.
• SB3 (Voltage Reference Selection)
  • ON (Default): Connected +3.3V to STM32 VREF+ and DRV8316 VREF/LILM, VREF+ used as input.
  • OFF: Disconnected +3.3V to STM32 VREF+ and DRV8316 VREF/LILM, voltage reference powered by STM32G4 embed voltage reference buffer, VREF+ used as output.

SPI

• Mode=1
  • CPOL=0. Clock is low when idle.
  • CPHA=1. Data sampled on 2nd edge (i.e. falling edge).
• 16-bit data frame.
• MSB first.
• nCS pin active low.
• 5MHz clock (limited by DRV8316).

Board Characteristics

• Copper layer count: 2
• Board overall dimensions: 40 x 40 mm
• Min track/spacing: 0.13 mm / 0.13 mm
• Min hole diameter: 0.3 mm
• Castellated pads: No
• Edge card connectors: No
• Plated board edge: No