L9906

UM0755 User manual FET driver for 3-phase BLCD motor L9906 demonstration board Introduction The L9906 demonstration board is an evaluation board designed to provide the user with a platform for the evaluation of the L9906. The board provides all the main input/output capabilities needed to drive a BLCD motor properly and to provide diagnostic functionalities. September 2013 Doc ID 16019 Rev 3 1/41 www.st.com Contents UM0755 Contents 1 Hardware description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 1.1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 1.1.1 Microcontroller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 1.1.2 Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 1.1.3 USB ....................................................7 2 L9906 application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 3 L9906 pinout and pin descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 4 Board layout and views and images . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 5 Motherboard main components and connectors description . . . . . . 21 6 Daughterboard main components and connectors description . . . . . 22 7 Jumpers and connectors description . . . . . . . . . . . . . . . . . . . . . . . . . . 23 7.1 Motherboard jumpers and connectors description . . . . . . . . . . . . . . . . . . 23 7.2 Inverter daughterboard jumpers and connectors description . . . . . . . . . . 25 8 Test points description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 9 Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29 9.1 Jumper setting using external USB interface for SPI communication . . . 29 9.2 Jumper setting using microcontroller interface . . . . . . . . . . . . . . . . . . . . . 29 9.3 Notes at start up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 9.4 9.3.1 Start up for VCC = 3.3 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 9.3.2 Start up for VCC = 5 V . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 9.3.3 BOOST check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30 Notes for current sensing setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Appendix A Motherboard schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 A.1 2/41 Motherboard BOM (bill of materials. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Doc ID 16019 Rev 3 UM0755 Contents Appendix B Inverter daughterboard schematic. . . . . . . . . . . . . . . . . . . . . . . . . . 36 B.1 Inverter daughterboard BOM. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Appendix C Device daughterboard schematic . . . . . . . . . . . . . . . . . . . . . . . . . . 38 C.1 Device daughterboard BOM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Doc ID 16019 Rev 3 3/41 List of tables UM0755 List of tables Table 1. Table 2. Table 3. Table 4. Table 5. Table 6. Table 7. Table 8. Table 9. Table 10. Table 11. Table 12. 4/41 L9906 pin descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Motherboard jumpers and connectors description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23 Inverter daughterboard jumpers and connectors description . . . . . . . . . . . . . . . . . . . . . . . 25 Motherboard test points description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27 Inverter daughterboard test points description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 Configuration jumpers using external USB interface for SPI . . . . . . . . . . . . . . . . . . . . . . . 29 Configuration jumpers using microcontroller interface for SPI . . . . . . . . . . . . . . . . . . . . . . 29 Jumper setup for the possible combination of current sensing. . . . . . . . . . . . . . . . . . . . . . 31 Motherboard BOM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34 Inverter daughterboard BOM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37 Device daughterboard BOM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Doc ID 16019 Rev 3 UM0755 List of figures List of figures Figure 1. Figure 2. Figure 3. Figure 4. Figure 5. Figure 6. Figure 7. Figure 8. Figure 9. Figure 10. Figure 11. Figure 12. Figure 13. Figure 14. Figure 15. Figure 16. Figure 17. Figure 18. Figure 19. Application block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 L9906 application circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 L9906 pinout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Motherboard front layout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 Motherboard back layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 Motherboard front view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 Motherboard back view. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15 Device daughterboard layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Device daughterboard front view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Inverter daughterboard front layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Inverter daughterboard back layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Inverter daughterboard front view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 Inverter daughterboard back view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20 Motherboard main components and connectors description . . . . . . . . . . . . . . . . . . . . . . . 21 Daughterboard main components and connectors description . . . . . . . . . . . . . . . . . . . . . 22 Microcontroller connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 USB connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25 Inverter daughter connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26 Motherboard schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Doc ID 16019 Rev 3 5/41 Hardware description 1 UM0755 Hardware description The L9906 demonstration board has been developed for maximum flexibility, giving the user total access to all pins to simplify changing the device as well as the external PowerMOS on the inverter. Its main features are: 1.1 ● Total accessibility to all pins. ● Daughterboard approach to simplify changing the device. ● Daughterboard approach for the inverter to simplify changing the external PowerMOS. Block diagram Figure 1. Application block diagram 9R 9V 67$57  83 5HVHW $GMXVWDEOH 7KUHVKROG 3RZHU 92/7$*( 5HV$GM 'ULYHU 5()(5(1&( 7KHUPDO &XUUHQW 6KXWGRZQ OLPLWHU 5HV /RZ9ROWDJH 5HVHW 9FU (:R (:L *1' *$3*&)7 1.1.1 6/41 Microcontroller ● Standard connector for ST10F252 family ● PWM input ● Configuration and diagnostics of L9906 via SPI ● Possibility to connect to other microcontrollers by wire adaptor Doc ID 16019 Rev 3 UM0755 1.1.2 1.1.3 Hardware description Inverter ● BLCD motor driver ● Daughterboard approach ● 6 Power Mosfet (ST N-channel PowerMOS 40 V - 4.4 mΩ - 80 A - D2PAK) USB ● The SPI communication can be controlled also by a PC via an external USB converter changing the jumper configuration. Doc ID 16019 Rev 3 7/41 L9906 application circuit UM0755 2 L9906 application circuit Figure 2. L9906 application circuit         62 *$3*&)7 8/41 Doc ID 16019 Rev 3 UM0755 3 L9906 pinout and pin descriptions L9906 pinout and pin descriptions Figure 3. L9906 pinout 7$% 6XEVWUDWH             3RZHU662 *$3*&)7 Table 1. L9906 pin descriptions Pin number Pin name 1 NC 2 Description I/O type Not connected - GLS_3 Gate connection for low-side MOSFET, phase 3 O 3 SLS_3 Source connection for low-side MOSFET, phase 3 I 4 NC Not connected - 5 GLS_2 Gate connection for low-side MOSFET, phase 2 O 6 SLS_2 Source connection for low-side MOSFET, phase 2 I 7 NC Not connected - 8 GLS_1 Gate connection for low-side MOSFET, phase 1 O 9 SLS_1 Source connection for low-side MOSFET, phase 1 I 10 AGND Analog Ground 11 IS1+ Positive input for current sense amplifier 1 I 12 IS1- Negative input for current sense amplifier 1 I 13 NC Not connected - 14 IB1 Output for current sense amplifier 1 (test mode digital output #1) O Doc ID 16019 Rev 3 GND 9/41 L9906 pinout and pin descriptions Table 1. UM0755 L9906 pin descriptions (continued) Pin number Pin name 15 IB2 16 SGND2 17 IS2- Negative input for current sense amplifier 2 I 18 IS2+ Positive input for current sense amplifier 2 I 19 NC Not connected - 20 CBS_3 Bootstrap capacitor for high-side MOSFET, phase 3 I 21 GHS_3 Gate connection for high-side MOSFET, phase 3 O 22 SHS_3 Source connection for high-side MOSFET, phase 3 I 23 NC Not connected - 24 CBS_2 Bootstrap capacitor for high-side MOSFET, phase 2 I 25 GHS_2 Gate connection for high-side MOSFET, phase 2 O 26 SHS_2 Source connection for high-side MOSFET, phase 2 I 27 NC Not connected - 28 CBS_1 Bootstrap capacitor for high-side MOSFET, phase 1 I 29 GHS_1 Gate connection for high-side MOSFET, phase 1 O 30 SHS_1 Source connection for high-side MOSFET, phase 1 I 31 NC Not connected - 32 NC Not connected - 33 TM Test mode enable input I 34 PWM_H1 PWM command input for high-side phase 1 I 35 PWM_H2 PWM command input for high-side phase 2 I 36 PWM_H3 PWM command input for high-side phase 3 I 37 FS_FLAG Fault status flag output O 38 CS SPI chip select input I 39 SCK SPI serial clock input I 40 SI SPI serial data input I 41 SO SPI serial data output O 42 TO3 Test output O 43 EN2 Enable input 2 (ANDed with EN1 to enable any gate drive output) I 44 EN1 Enable input 1(ANDed with EN1 to enable any gate drive output) I 45 PWM_L1 PWM command input for low-side phase 1 I 46 PWM_L2 PWM command input for low-side phase 2 I 47 PWM_L3 PWM command input for low-side phase 3 I 48 SGND1 49 VCC 10/41 Description Output for current sense amplifier 2 (test mode digital output #2) Substrate (and ESD_GND) connection 2 Substrate (and ESD_GND) connection1 5 V/3.3 V power supply input Doc ID 16019 Rev 3 I/O type O GND GND I UM0755 Table 1. L9906 pinout and pin descriptions L9906 pin descriptions (continued) Pin number Pin name 50 NC 51 Description I/O type Not connected - GCR Resistor connection for gate driver current selection O 52 VDD 3.3 V power supply output O 53 DGND 54 VB Protected battery supply - 55 NC Not connected - 56 BST_L Boost regulator inductance connection O 57 NC Not connected - 58 BGND Boost ground GND 59 NC Not connected - 60 BST_C Boost regulator capacitance connection I 61 NC Not connected - 62 VCAP Decoupling capacitor for low-side drivers power supply I 63 NC Not connected - 64 VDH High-side drain voltage sense I Digital ground Doc ID 16019 Rev 3 GND 11/41 Board layout and views and images UM0755 4 Board layout and views and images Figure 4. Motherboard front layout 12/41 Doc ID 16019 Rev 3 UM0755 Figure 5. Board layout and views and images Motherboard back layout Doc ID 16019 Rev 3 13/41 Board layout and views and images Figure 6. 14/41 UM0755 Motherboard front view Doc ID 16019 Rev 3 UM0755 Figure 7. Board layout and views and images Motherboard back view Doc ID 16019 Rev 3 15/41 Board layout and views and images UM0755 Figure 8. Device daughterboard layout Figure 9. Device daughterboard front view 16/41 Doc ID 16019 Rev 3 UM0755 Board layout and views and images Figure 10. Inverter daughterboard front layout Doc ID 16019 Rev 3 17/41 Board layout and views and images UM0755 Figure 11. Inverter daughterboard back layout 18/41 Doc ID 16019 Rev 3 UM0755 Board layout and views and images Figure 12. Inverter daughterboard front view Doc ID 16019 Rev 3 19/41 Board layout and views and images UM0755 Figure 13. Inverter daughterboard back view 20/41 Doc ID 16019 Rev 3 UM0755 5 Motherboard main components and connectors description Motherboard main components and connectors description Figure 14. Motherboard main components and connectors description Doc ID 16019 Rev 3 21/41 Daughterboard main components and connectors description 6 Daughterboard main components and connectors description Figure 15. Daughterboard main components and connectors description 22/41 UM0755 Doc ID 16019 Rev 3 UM0755 Jumpers and connectors description 7 Jumpers and connectors description 7.1 Motherboard jumpers and connectors description Table 2. Motherboard jumpers and connectors description Name Description Type J1 VCC source jumper (on = microcontroller, off = J3 conf) On/off jumper J2 Vbat (ignition switch) Screw J3 VCC source jumper (1-2 = 5 V, 2-3 = 3.3 V) Configurable 2-position jumper J4 SPI signals connector (CS, SDI, SCK, SDO) Pins J5 CS signal source jumper (2-1 = microcontroller, 3-2 = external USB) Configurable 2-position jumper J6 SDI signal source jumper (2-1 = microcontroller, 3-2 = external USB) Configurable 2-position jumper J7 L9777 WD jumper (on = pin connected, off = pin disconnected) On/off jumper J8 L9777 VDD_EN jumper (on = pin connected, off = pin disconnected) On/off jumper J9 L9777 WD_EN jumper (on = pin connected, off = pin disconnected) On/off jumper J10 L9777 RADJ jumper (on = pin connected to GND, off = pin connected to R8) On/off jumper J11 SCK signal source jumper (2-1 = microcontroller, 3-2= external USB) Configurable 2-position jumper J12 SDO signal source jumper (2-1 = microcontroller, 3-2= external USB) Configurable 2 -position jumper J15 BST_C jumper (on = pin connected, off = pin disconnected) On/off jumper J16 BST_L jumper (on = pin connected, off = pin disconnected) On/off jumper J20 BGND jumper (on = pin connected, off = pin disconnected) On/off jumper J34 EN2 signal source jumper (2-1 = GND, 3-2 = VCC) Configurable 2 position jumper J50 GCR signal source jumper (2-1 = R1 = 1 KΩ, 3-2 = R10 = 6 KΩ) Configurable 2 position jumper J64 Ignition key simulator (on = ignition simulation, off = ignition switch) On/off jumper J65 Hall sensor connector Multipin with guide J66 Encoder connector Multipin with guide JP1 Inverter connector Multipin with guide Doc ID 16019 Rev 3 23/41 Jumpers and connectors description Table 2. UM0755 Motherboard jumpers and connectors description (continued) Name Description U1 L9906 socket Multipin X1 Microcontroller connector Multipin X2 Microcontroller connector Multipin 567 Figure 16. Microcontroller connector & Type & /&- 5(: 5 567B$'9FU (:R (:L 5 5(: 24/41 *1' Doc ID 16019 Rev 3 UM0755 Jumpers and connectors description Figure 17. USB connection 67$%,/,7