ST EVAL-L99ASC03 User Manual Download Page 1

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Introduction

The EVAL-L99ASC03 is an evaluation board designed for sensorless 3Phase BLDC motor control.

EVAL-L99ASC03 Evaluation Board

UM2983

User manual

UM2983

Rev 1

January 2022

For further information contact your local STMicroelectronics sales office.

www.st.com

Summary of Contents for EVAL-L99ASC03

Page 1: ...an evaluation board designed for sensorless 3Phase BLDC motor control EVAL L99ASC03 Evaluation Board UM2983 User manual UM2983 Rev 1 January 2022 For further information contact your local STMicroele...

Page 2: ...roller provides the logic section for monitoring and driving the L99ASC03G assembled in the daughterboard With the aim to make the board usage and setting simpler STM provides a dedicated Graphic User...

Page 3: ...e L99ASC03G The motherboard has the following functions USB to UART conversion a FT232RL USB to serial UART interface is used to convert the data from the GUI in the PC in commands that are processed...

Page 4: ...101 R 5V R123 R GND R102 R 5V R124 R GND R103 R 5V R125 R GND R104 R 5V R126 R GND R105 R 5V R127 R GND R106 R 5V R128 R GND R107 R 5V R129 R GND R108 R 5V R130 R GND R109 R 5V R131 R GND R110 R 5V R1...

Page 5: ...US1 RXLED 22 CBUS2 TXDEN 13 GND 18 GND 7 AGND 25 VCCIO 4 VCC 20 USBDM 16 USBDP 15 NC 8 RESET 19 NC 24 OSCO 28 TEST 26 OSCI 27 GND 21 CBUS3 PWREN 14 CBUS4 SLEEP 12 3V3OUT 17 U500 FT232RL GND_USB C505 1...

Page 6: ...19 PF4 AIN12 20 VDDA 23 PF0 AIN10 26 PB7 AIN7 27 PB4 AIN4 30 SPI_MISO PC7 51 PG4 56 PI0 57 TIM1_BKIN PE3 67 I2C_SDA PE2 68 TIM3_CC1 PD2 HS 75 TIM2_CC1 PD4 77 LINUART_TX PD5 78 TIM3_CC2 PD0 HS 73 I2C_S...

Page 7: ...stages are foreseen only one is soldered 1 BLCD motor hall sensors connector and its components not soldered optional 1 current mode device and its components not soldered optional 1 power stage thre...

Page 8: ...DGND Rshunt2optional C20 100nF 40V C21 100nF 40V C22 100nF 40V CSO R36 0R ETR ETR OPTIONAL OPTIONAL Current Mode SGND 5V_STM8 C23 100nF R38 33K SGND HALL2 R37 0R TIM3_CC1 TIM3_CC1 R39 0R R40 0R R41 10...

Page 9: ...designed in a 2 layers board Motherboard Top and Bottom layers are shown in Figure 7 and Figure 8 Gerber files of the motherboard can be found in the ST website Figure 7 Assembly Top Figure 8 Assembly...

Page 10: ...ting but can be successfully implemented for a low number of tracks The power supply trace on the component is made quite thick to present as low as impedance trace possible Large areas of ground on t...

Page 11: ...and connecting with a host PC through USB cable are shown Figure 11 Motherboard section The placement of the components of the daughterboard is shown in Figure 12 The main components of the daughterbo...

Page 12: ...t position JP2 5 V_DB Not present JP2 5 V_STM8 Present JP4 RxD USART JP5 TxD USART JP6 Reset STM8 JP7 Swim STM8 Table 2 Daughterboard jumper configuration Jumper Description Default position JP3a ASC0...

Page 13: ...Revision history Table 3 Document revision history Date Version Changes 24 Jan 2022 1 Initial release UM2983 UM2983 Rev 1 page 13 17...

Page 14: ...tion and setup 3 2 1 Components description 3 2 2 Motherboard schematic 3 2 3 Daughterboard schematic 7 2 4 Motherboard layout 9 2 5 Daughterboard layout 10 2 6 Board connection and setup 11 Revision...

Page 15: ...List of tables Table 1 Motherboard jumper configuration 12 Table 2 Daughterboard jumper configuration 12 Table 3 Document revision history 13 UM2983 List of tables UM2983 Rev 1 page 15 17...

Page 16: ...i Board USB interface 5 Figure 5 STM8 Uni Board STM8 and supply 6 Figure 6 EVAL L99ASC03 daughterboard schematic 8 Figure 7 Assembly Top 9 Figure 8 Assembly Bottom 9 Figure 9 Assembly Top 10 Figure 10...

Page 17: ...ts and ST assumes no liability for application assistance or the design of Purchasers products No license express or implied to any intellectual property right is granted by ST herein Resale of ST pro...