ST STEVAL-ETH001V1, Getting Started

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2 Hardware description
2.1 Main blocks
Figure 3. STEVAL-ETH001V1 main blocks
1. Power management
2. Digital actuation
3. Motor driver
4. Supply voltage connection
5. STM32F767ZI MCU
6. SWD connector
7. Ethernet real-time connectivity with NETX90 IC
8. RS485 interface
9. JTAG connector
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2.2 Motor driver
The motor driver consists of a three-half bridge with the STH270N8F7-2 power MOSFET driven by the
STDRIVE101 gate driver to drive a three-phase motor embedding quadrature encoder to detect the rotor position.
The STDRIVE101 embeds different blocks mainly featuring:
1. Matched propagation delay for all channels
2. Very short propagation delay of 40 ns
3. Integrated bootstrap diodes
4. 12 V LDO linear regulator (50 mA max.)
5. Embedded VDS monitor for each external MOSFET
6. Overcurrent comparator
7. UVLO and thermal shutdown protection
8. Standby mode for low current consumption operation
Motor driving signals are modulated according to the current sensing and speed feedback.
The sensing network has been built using the
TSV991ILT operational amplifier which amplifies the voltage signal
read by three shunt resistors connected in series to each STH270N8F7-2 power MOSFET low side.
UM2807
Hardware description
UM2807 - Rev 1
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