EVAL6480H and EVAL6482H
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1. reserve the right to make changes corrections enhancements modifications and improvements to ST products and or to this document at any time without notice Purchasers should obtain the latest relevant information on ST products before placing orders ST products are sold pursuant to ST s terms and conditions of sale in place at the time of order acknowledgement Purchasers are solely responsible for the choice selection and use of ST products 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 products with provisions different from the information set forth herein shall void any warranty granted by ST for such product ST and the ST logo are trademarks of ST All other product or service names are the property of their respective owners Information in this document supersedes and replaces information previously supplied in any prior versions of this document 2015 STMicroelectronics All rights reserved 4 DoclD025458 Rev 2 31 312. 99 SA S AM15182v1 17 31 DoclD025458 Rev 2 UM1685 Boards description Figure 10 EVAL6482H schematic part 2 2 9A g S89XZ8 88170 408 585 78 NI MSZV 0PI00L 19 92170 1001 6d 9d S 53H SA MC LH0 Me LHO 619 8 83sN3s vasNas T 014 68018 014 92015 90 80 Led OLANSZOLS OLANSZOLS 80 29100 Igino evino WN 001 4022 919 001 022 9 dH 2 2 934 SA i SA 9r SA d TSH 934 SH SA SA _ SA e OLANSZALS OLANSZALS L rene eS L vO 50 01 4 82015 014 42015 10 A001 n0zc 3 0 022 ano SA SA AM15183v1 DoclD025458 Rev 2 18 31 UM1685 Boards description Table 10 EVAL6482H bill of material Item Quantity Reference Value Package VS VREG VDD VCC 1 9 STCK STBY FLAG BUSY TPTH RING red TPTH RING 1MM ADCIN 2 1 GND TP RING black TPTH RING 1MM 3 2 1 7 470 nF 25 V CAPC 0603 4 3 C2 C14 C15 220 nF 100 V CAPC 0805 5 1 C3 100 nF 6 3 V CAPC 0603 6 1 C4 100 nF 4 V CAPC 0603 7 1 C5 22 yF 6 3 V CAPC 1206 8 1 C6 100 nF 25 V CAPC 0603 9 1 C8 100 nF 100 V CAPC 0603 10 1 C9 47 nF
3. Cor UM1685 y life augmented User man ual EVAL6480H and EVAL6482H high power microstepping motor drivers April 2015 Introduction The EVAL6480H and EVAL6482H are two demonstration boards based on L648x devices implementing a complete stepper motor driver for high power applications They are designed to operate with a supply voltage ranging from 10 5 V to 85 V and mount eight STD25NF10 MOSFETs with a maximum current of 25 A qs In combination with the STEVAL PCCO009V2 demonstration board and the SPINFamily evaluation tool the boards provide a complete and easy to use evaluation environment allowing the user to investigate all the features of the L648x devices Both the boards support the daisy chain configuration making them suitable for the evaluation of the devices in multi motor applications DoclD025458 Rev 2 1 31 www st com Contents UM1685 Contents 1 Boards description 5 1 1 EVAL6480H 5 1 2 EVAL6482H 14 2 Evaluation environment setup 23 3 Device configuration 24 3 1 Voltage mode driving 6480 24 3 2 Advanced current control EVAL6482H 25 3 3 Gate drivers 25 3 4 Overcurrent and stall det
4. o o o o o o o o o o o o AM15185v1 Figure 12 EVAL6482H layout inner layer 2 AM15187v1 Ly DoclD025458 Rev 2 21 31 Boards description UM1685 Figure 13 EVAL6482H layout inner layer 3 AM15188v1 Figure 14 EVAL6482H layout bottom layer AM15189v1 22 31 DoclD025458 Rev 2 Ly UM1685 Evaluation environment setup 2 Evaluation environment setup The evaluation environment is composed by One or more EVAL6480H or EVAL6482H device One STEVAL PCCO009V2 demonstration board A USB cable A stepper motor with a small mechanical load unloaded stepper motors suffer of strong resonance issues A power supply with an output voltage within the operative range of the evaluation board A PC with a Microsoft Windows 7 or Windows XP operating system and with a free USB port The SPINFamily evaluation tool the last version can be downloaded from the STMicroelectronics website In order to start using the evaluation environment the following steps are required 1 2 ou amp 9 Install the SPINFamily evaluation tool Start the SPINFamily evaluation tool by default it is in Start menu gt All programs gt STMicroelectronics gt SPINFamily Evaluation Tool Select the proper device when requested by the application Plug the STEVAL PCCO009V2 demonstration board to a free USB port Wait a few seconds for board initialization Connect
5. schematic part 2 2 0 4 482016 0 4 682015 80 It eaino OIdNScQIS 014 82015 50 SA Fe in AE S8SXZA MSZ 07001 94 AM14880v1 934 SA 934 SA S 9 8 889 28 OS e NI 918 MSZE OMOOL 14 S gt 014 82015 OlJNszdis T IY 519 90 40 WINO AO00L u02c I 1459 S ev SHoL gt OldNSzdiS 0 4 62015 Iv SH 9 S iN00L nozz WES NOILdO i S IND DOA S SA S 9 31 DoclD025458 Rev 2 Boards description UM1685 Table 5 EVAL6480H bill of material Item Quantity Reference Value Package VS VREG VDD VCC 1 9 STCK STBY FLAG TPTH RING 1MM red TPTH RING 1MM BUSY ADCIN 2 2 C1 C7 470 nF 25 V CAPC 0603 3 1 C2 220 nF 100 V CAPC 0805 4 1 C3 100 nF 6 3 V CAPC 0603 5 1 C4 100 nF 4 V CAPC 0603 6 1 C5 22 yF 6 3 V CAPC 1206 7 1 C6 100 nF 25 V CAPC 0603 8 1 C8 100 nF 100 V CAPC 0603 9 1 C9 47 nF 100 V CAPC 0805 10 2 C10 C13 10 nF 6 3 V CAPC 0603 11 1 C11 220 pF 100 V CAPES R18H17 12 1 C11A 220 yF 100 V CAPE R16H21 P75 13 1 C12 100 pF 6 3 V CAPC 0603 14 1 DL1 LED amber LEDC 0805 15 1 DL2 LED red LEDC 0805 16 1 D1 BAV99 SOT 23 17 1 D2 BZX585 B3V3 SOD523 18 1 D3 BZX585 B3V6 SO
6. VS 10 5 to 85 V Maximum output current each phase 6 Arms at 25 460 External MOSFET Ras ow 33 typical at 25 Gate driver supply voltage VCC 7 5 15V Logic supply voltage 3 3V Logic interface supply voltage 3 3Vor5V Low level logic input OV High level logic input VDD Operating temperature 25 C to 125 C 1 Limited by the mounted sensing resistors 2 Referto STD25NF10 datasheet for details 3 Alllogic inputs are 5 V tolerant Figure 8 EVAL6482H jumper and connector location Slave SPI FLAGLED BUSY LED Master SPI connector connector External switch connector SW input Application ADCIN input arsa Power supply connector 10 5 V 85 V Supply management connector VS VSREG VCCREG and GND Supply management Phase A Phase B jumpers connector connector AM15181v1 4 DoclD025458 Rev 2 UM1685 Boards description Table 7 EVAL6482H jumper and connector description Name Type Function J5 Power supply Main supply voltage J7 Power output Power bridge A outputs J8 Power output Power bridge B outputs J6 Power supply Integrated voltage regulator inputs J3 SPI Master SPI connector J4 SPI Slave SPI connector JP1 Jumper VS to VSREG jumper JP2 Jumper VSREG to VCC jumper JP3 Jumper VCC to VCCREG jumper JP4 Jumper VCCRESG to VREG jumper JP5 Jumper VREG to VDD ju
7. 100 V CAPC 0805 11 2 C10 C13 10 nF 6 3 V CAPC 0603 12 1 C11 220 yF 100 V CAPES R18H17 13 1 C11A 220 yF 100 V CAPE R16H21 P75 14 1 C12 100 pF 6 3 V CAPC 0603 15 1 DL1 LED amber LEDC 0805 16 1 DL2 LED red LEDC 0805 17 1 D1 BAV99 SOT 23 18 1 D2 BZX585 B3V3 SOD523 19 1 D3 BZX585 B3V6 SOD523 20 5 JP1 JP3 JP5 JP7 JP8 Jumper CLOSED JP2SO 21 3 JP2 JP4 JP6 Jumper OPEN JP2SO 22 2 J1 J2 N M STRIP254P M 2 23 J3 Pol IDC male header vertical CON FLAT 5X2 180M 10 poles black 24 J4 Pol IDC male header vertical CON FLAT 5X2 180M 10 poles gray 25 3 J5 J7 J8 Screw connector 2 poles MORSV 508 2P 26 1 J6 N M STRIP254P M 4 27 8 Q5 Q6 STD25NF10 DPAK 28 1 R1 100 Q RESC 0603 29 2 R2 R3 39 RESC 0603 30 2 R4 R5 470 Q RESC 0603 31 2 R6 R7 100 0 125 W RESC 0603 DoclD025458 Rev 2 19 31 Boards description UM1685 Table 10 EVAL6482H bill of material continued Item Quantity Reference Value Package 32 1 R9 N M RESC 0603 33 1 R17 50 0 125 W TRIMM 100X50X110 64W 34 4 R18 R19 R20 R21 0 1 0 2W RESC 2010 35 1 U1 L6482 HTSSOPO50P 660X110 38 EP 20 31 DoclD025458 Rev 2 UM1685 Boards description Figure 11 EVAL6482H layout top layer o o o o o o o o o o
8. drain output L6480 BUSY output 2 Open drain output L6480 FLAG output 3 Ground Ground 4 Supply EXT VDD can be used as external logic power supply 5 Digital output SPI master IN slave OUT signal connected to pin 5 of J3 6 Digital input SPI serial clock signal connected to L6480 CK input 7 Digital input SPI master OUT slave IN signal connected to L6480 SDO output 8 Digital input SPI slave select signal connected to L6480 CS input 9 Digital input L6480 step clock input 10 Digital input L6480 standby reset input DoclD025458 Rev 2 7 31 UM1685 Figure 2 EVAL6480H schematic part 1 2 Boards description 19599 815 ods 7Sna OVH a31 13534 AGIS 0 7 Sd ov TH ovis a ONAS 509 Asna cas 6 Tew anyu 5 08 210 0 0 Sou DIS E wy 5 lt a 170990 100950 2 WN es va NIOQV lt Noqay SAYA 93H 29 1 0 ane MOIS Quis Ovid L ASna 0 195939 A8IS 0 NI 0 AOOLMOOL ASZ UOLy Sc u00L ICA9 nec AvVMOOL 89 99 Le 19 99 AO001 4022 23 93HA ASc U0Zt 29u919 91 AM14875v1 DoclD025458 Rev 2 8 31 Boards description UM1685 Figure 3 EVAL6480H
9. not a current The protection thresholds are set according to the voltage drop caused by the target triggering current on the MOSFET Rason at the expected operating temperature in fact this parameter increases with temperature During the preliminary stages of evaluation the max value of 1000 mV can be set for both protections The default value of 281 25 mV has a good probability to trigger the overcurrent alarm Warning Important itis strongly discouraged to disable the overcurrent shutdown It may result in critical failures Speed profile The max speed parameter is the maximum speed the motor will run By default it is about 1000 step s That means if you send a command to run at 2000 step s the motor speed is limited at 1000 step s This is an important safety feature in the final application but not necessarily useful to evaluate the device performances Setting the parameter to high values e g 6000 step s allows evaluating the maximum speed which can be achieved by the application under test through the speed tracking command Run but it probably limits the possibility to use positioning commands Move GoTo etc The Full step speed parameter indicates the speed at which the system switches from microstepping to full step operation In voltage mode driving devices EVAL6480H it is always recommended to operate in microstepping and not to switch to the full step Hence this parameter should be greater than t
10. termination jumper see Section 1 1 EVAL6480H on page 5 and Section 1 2 EVAL6482H on page 14 3 Connect the SPI OUT connector of the first demonstration board to the SPI IN of the next one through the 10 pole flat cable 4 Repeat point 2 and 3 for all the others board of the chain but the last one 5 Check the termination jumpers of the demonstration boards all the jumpers but the last one should be opened Note Increasing the number of devices connected in chain could degrade SPI communication performances If communication issues occur try to reduce the SPI clock speed DoclD025458 Rev 2 29 31 Revision history UM1685 7 30 31 Revision history Table 14 Document revision history Date 28 Nov 2013 Revision 1 Changes Initial release 08 Apr 2015 Updated Section Introduction on page 1 replaced and cSPIN family by L648x Updated Figure 4 EVAL6480H layout top layer on page 12to Figure 7 EVAL6480H layout bottom layer on page 13 converted to greyscale Removed Figure 11 EVAL6482H layout silkscreen from page 20 Updated title of the 4354 replaced cSPIN family by L648x devices in Section 3 Device configuration on page 24 Minor modifications throughout document DoclD025458 Rev 2 UM1685 IMPORTANT NOTICE PLEASE READ CAREFULLY STMicroelectronics NV and its subsidiaries ST
11. 0 Digital input L6482 standby reset input 16 31 DoclD025458 Rev 2 Boards description UM1685 Figure 9 EVAL6482H schematic part 1 2 83SN3SC gt 28 sio gt zd sHo 1875779 1 5 id vasnas gt wv Sre 2 1 0 gt ev SHOT 1 IV ST lt gt ivsHo 83SN3S 1no SH 9 ST 187100 Id SH O V3SN3S ev ST 9 ev 1no SH 9 AN9A 28h91 ovid oNAS Asna HE oas 34 AGLS Svs ASna ASna 005 105 M9 sou MOIS ASna H3gNv hia vH ed 1007280 NOSO pe NI aan 2 934 99 A00L UuZV 69 ta ASe u0ZV 90u819JeJ 001 0001 89 934 SA ASZ UOLb 49 13534 816 100 145 199539 ALS er 145 A9 do0 A9 U0L 005 zdf A9 u0L 019 2 WN 1 en Sages 819 001 1102502 950 N Sav Noav 4 T 0 GNO IS Quos 5015 Ovid I 0 ov OV xsna asne 2 E Asna 82 001 enginez A A9 U001 18538 815 0 99 s9 9 AGLS NT oav 0 938 DOA NI oQv 99 O3HA 934
12. AL6482H layout inner layer 3 22 EVAL6482H layout bottom layer 22 DoclD025458 Rev 2 Ly UM1685 Boards description 1 1 1 4 Boards description EVAL6480H Table 1 EVAL6480H electrical specifications Parameter Value Supply voltage VS 10 5 to 85 V Maximum output current each phase 25 Arms at 25 see External MOSFET Ras ow 33 typical at 25 C Gate driver supply voltage VCC 7 5 15V Logic supply voltage 3 3V Logic interface supply voltage 3 3Vor5V Low level logic inputs OV High level logic input Operating temperature 25 C to 125 C 1 Referto STD25F10 datasheet for details 2 Alllogic inputs are 5 V tolerant Figure 1 EVAL6480H jumper and connector location Slave SPI FLAG LED BUSY LED Master SPI connector External switch connector SW input Application Motor supply voltage area compensation regulation ADCIN input Power supply connecto 10 5 V 85 V 140057 OUTA Supply management DUET connector VS VSREG VCCREG and GND Supply management Phase A Phase B jumpers connector connector AM14874v1 DoclD025458 Rev 2 5 31 Boards description UM1685 Table 2 EVAL6480H jumper and connector description Name Type Function J5 Power sup
13. Configuration JP3 JP4 VCCREG range Notes Internally generated from Closed Open Vec Default Vcc Internally generated from External protection diode could be required a voltage source different Open Open 6 3 V following text below E from Externally supplied External protection diode could be required equal to VCCREG Open Closed REY see following text below table When the VCCREG pin is not shorted to the VCC JP3 is open particular care must be taken in order to avoid that the VCC voltage falls below the VCCREG one In this case the internal ESD diode is turned on and the device could be damaged Adding a low drop diode between the VCCREG and VCC protects the internal ESD diode from this event 28 31 DoclD025458 Rev 2 UM1685 Daisy chaining Table 13 VDD supply configurations Configuration JP5 JP6 VDD range Notes Supplied by VREG Closed Open 3 3V Default 3 3 V logic Supplied SP Open Closed 33Vor5V 3 3 V when connected to STEVAL PCCOO9V2 connectors due test Open Open 33Vor5V Must be 3 3 V connected to the STEVAL PCCO09V2 6 Daisy chaining More demonstration boards can be connected in daisy chain mode To drive two or more boards in daisy chain configuration 1 Connect the STEVAL PCCO09V2 board 10 pin connector to the SPI IN connector of the first demonstration board through the 10 pole flat cable 2 Openthe
14. D025458 Rev 2 Ly UM1685 Device configuration 3 2 3 3 Advanced current control EVAL6482H The following configuration gives good results with most of motors e Minimum ON time 4 us e Minimum OFF time 21 us e fast decay 10 us e Max fast decay at step change 16 us e Target switching time 48 us e Predictive current control enabled The impact of the timing parameters are explained in the application note 4158 Peak current control with automatic decay adjustment and predictive current control basics and setup on www st com The target phase current is set through the TVAL registers The TVAL determinates the reference voltage i e the voltage drop on the sense resistors corresponding to the peak of the current sine wave microstepping operation Equation 1 X Rsense TVAL_X 0 05 The sensing resistors can be changed as described in Section 5 How to change the supply configuration of the board Gate drivers The configuration of the gate driving circuitry depends on the external MOSFETs characteristics The demonstration boards mount the STD25NF10 Power MOSFETSs Warning Important a wrong gate driving setup may cause spurious overcurrent failures even if no load is connected to the power stage According to the STD25NF 10 datasheet the total gate charge required to turn on the MOSFET is about 55 nC The charge supplied by the device at each commuta
15. D523 19 1 GND TPTH RING 1MM black TPTH RING 1MM 20 5 JP1 JP3 JP5 JP7 JP8 Jumper CLOSED JP2SO 21 3 JP2 JP4 JP6 Jumper OPEN JP2SO 22 2 J1 J2 N M STRIP254P M 2 23 J3 Pol IDC male header vertical CON FLAT 5X2 180M 10 poles black 24 J4 Pol IDC male header vertical CON FLAT 5X2 180M 10 poles gray 25 3 J5 J7 J8 Screw connector 2 poles MORSV 508 2P 26 1 J6 N M STRIP254P M 4 27 8 Q5 Q6 STD25NF10 DPAK 28 1 R1 100 Q RESC 0603 29 2 R2 R3 39 kQ RESC 0603 30 2 R4 R5 4700 RESC 0603 31 2 R6 R7 100 0 125 W RESC 0603 10 31 DoclD025458 Rev 2 UM1685 Boards description Table 5 EVAL6480H bill of material continued Item Quantity Reference Value Package 32 1 R8 33 0 125 W TRIMM 100X50X110 64W 33 1 R9 N M RESC 0603 34 1 U1 L6480 HTSSOPO050P 660X110 38 EP Ly DoclD025458 Rev 2 11 31 Boards description UM1685 Figure 4 EVAL6480H layout top layer mi B B 12 31 DoclD025458 Rev 2 Ly UM1685 Boards description Figure 6 EVAL6480H layout inner layer 3 DoclD025458 Rev 2 13 31 Boards description UM1685 1 2 14 31 EVAL6482H Table 6 EVAL6482H electrical specifications Parameter Value Supply voltage
16. de driving EVAL6480H The configuration parameters of the voltage mode driving can be obtained through the BEMF compensation tool embedded in the SPINFamily software A wrong setup of these parameters could cause several issues in particular e phase current decreases with the speed and the motor will stall e The wrong voltage is applied to the motor and the system is very noisy e phase current reaches the overcurrent limit The BEMF compensation form uses the application parameters as inputs in order to evaluate the proper device setup The required inputs are e Supply voltage e Target phase current r m s value at different motion conditions acceleration deceleration constant speed and holding e Target operating speed maximum speed e Motor characteristics The motor characteristics are electrical constant Ke phase inductance and resistance The inductance and the resistance of the phase are given in the motor datasheet The Ke is rarely given in the specification and must be measured In the help section of the SPINFamily software a step by step procedure is explained The same procedure can also be found in the application note AN4144 Voltage mode control operation and parameter optimization on www st com Click on the evaluate button to get the suggested setup for the voltage mode driving Then click on write button to copy the data into the registers of the L6480 device Docl
17. ection thresholds 26 3 5 Speed profile iius we Earn V4 ROC cen 26 4 Sensing resistors of the EVAL6482H 27 5 How to change the supply configuration of the board 28 6 Daisy chaining 29 7 Revision history 30 2 31 DoclD025458 Rev 2 Ly UM1685 List of tables List of tables Table 1 EVAL6480H electrical specifications 5 Table 2 EVAL6480H jumper and connector description 6 Table 3 EVAL6480H master SPI connector pinout J3 6 Table 4 EVAL6480H slave SPI connector pinout 4 7 Table 5 EVAL6480H bill of material 10 Table 6 EVAL6482H electrical specifications 14 Table 7 EVAL6482H jumper and connector description 15 Table 8 EVAL6482H master SPI connector pinout J3 15 Table 9 EVAL6482H slave SPI connector pinout 4 16 Table 10 EVAL6482H bill of material 19 Table 11 supply configurations 28 Table 12 VREG sup
18. gh the jumpers from J1 to J6 as listed in Table 11 Table 12 and Table 13 Table 11 VCC supply configurations Configuration JP1 JP2 VSREG range Notes Internally generated from Default ge Closed Open Vcc 85V value is determined by the internal regulator 5 configuration Internally generated from Vec value is determined by the internal regulator a voltage source different Open Open Voc 3V V connguration cc 5 External protection diode could be required from Vs see following text below table Externally supplied External protection diode could be required equal to VSREG Open see following text below table Note When the Vcc voltage of 7 5 V is used the charge pump diodes should be replaced with low drop ones suggested BAR43SFILM Otherwise the resulting boot voltage could be lower than the respective UVLO threshold and the device is not operative When the VSREG pin is not shorted to the VS JP1 is open particular care must be taken in order to avoid that the VBOOT voltage falls below the VSREG one e g VS is floating and VSREG is supplied In this case the internal ESD diode is turned on and the device could be damaged Adding a low drop diode between the VSREG and VS protects the internal ESD diode from this event the diodes of the charge pump must also be low drop type Table 12 VREG supply configurations
19. he maximum speed DoclD025458 Rev 2 Ly UM1685 Sensing resistors of the EVAL6482H 4 Note Sensing resistors of the EVAL6482H The output current range of the board is determined by the sensing resistors as indicated in Equation 2 and Equation 3 Equation 2 Ipeak min 7 8 mV Rsense Equation 3 Ipeak max 1 V Rsense Where 7 8 mV and 1 V are the minimum and the maximum value of the TVAL registers However the actual output current is usually limited by the power rating of the sensing resistors Equation 4 Pa max lout limit R r m s value sense The power rating of the sensing resistor determining the maximum output current is 5096 of the nominal one If the operative range resulting from the sensing resistors which are mounted on the board is not suitable for the application it is possible to change these components in order to fit the requirements The sensing resistors should make the current control to operate with a peak reference voltage between 0 2 and 0 1 volts This way the power dissipation on the sensing resistor is not excessive and the offset of the sensing circuitry does not affect the performance of the current control algorithm Equation 5 Rsense 0 2 V lpeak DoclD025458 Rev 2 27 31 How to change the supply configuration of the board UM1685 5 How to change the supply configuration of the board The configuration of the supply voltages can be changed throu
20. mper JP6 Jumper VDD to 3 3 V from SPI connector jumper JP7 Jumper Daisy chain termination jumper JP8 Jumper STBY to VS pull up jumper Table 8 EVAL6482H master SPI connector pinout J3 Pin number Type Description 1 Open drain output L6482 BUSY output 2 Open drain output L6482 FLAG output 3 Ground Ground 4 Supply EXT VDD can be used as external logic power supply 5 Digital output SPI master IN slave OUT signal connected to the L6482 SDO output through daisy chain termination jumper JP7 6 Digital input SPI serial clock signal connected to L6482 CK input 7 Digital input SPI master OUT slave IN signal connected to L6482 SDI input 8 Digital input SPI slave select signal connected to L6482 CS input 9 Digital input L6482 step clock input 10 Digital input L6482 standby reset input DoclD025458 Rev 2 15 31 Boards description UM1685 Table 9 EVAL6482H slave SPI connector pinout J4 Pin number Type Description 1 Open drain output L6482 BUSY output 2 Open drain output L6482 FLAG output 3 Ground Ground 4 Supply EXT VDD can be used as external logic power supply 5 Digital output SPI master IN slave OUT signal connected to pin 5 of J3 6 Digital input SPI serial clock signal connected to L6482 CK input 7 Digital input SPI master OUT slave IN signal connected to L6482 SDO output 8 Digital input SPI slave select signal connected to L6482 CS input 9 Digital input L6482 step clock input 1
21. ply Main supply voltage J7 Power output Power bridge A outputs J8 Power output Power bridge B outputs J6 Power supply Integrated voltage regulator inputs J3 SPI Master SPI connector J4 SPI Slave SPI connector JP1 Jumper VS to VSREG jumper JP2 Jumper VSREG to VCC jumper JP3 Jumper VCC to VCCREG jumper JP4 Jumper VCCREG to VREG jumper JP5 Jumper VREG to VDD jumper JP6 Jumper VDD to 3 3 V from SPI connector jump JP7 Jumper Daisy chain termination jumper JP8 Jumper STBY to VS pull up jumper TP8 BUSY SYNC Jumper BUSY SYNC output test point Table 3 EVAL6480H master SPI connector pinout J3 Pin number Type Description 1 Open drain output L6480 BUSY output 2 Open drain output L6480 FLAG output 3 Ground Ground 4 Supply EXT VDD can be used as external logic power supply SPI master IN slave OUT signal connected to the L6480 9 Digital output SDO output through daisy chain termination jumper JP7 6 Digital input SPI serial clock signal connected to L6480 CK input 7 Digital input SPI master OUT slave IN signal connected to L6480 SDI input 8 Digital input SPI slave select signal connected to L6480 CS input 9 Digital input L6480 step clock input 10 Digital input L6480 standby reset input 6 31 DoclD025458 Rev 2 UM1685 Boards description Table 4 EVAL6480H slave SPI connector pinout J4 Pin number Type Description 1 Open
22. ply configurations 28 Table 13 VDD supply configurations 2 29 Table 14 Document revision history 30 DoclD025458 Rev 2 3 31 List of figures UM1685 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 4 31 EVAL6480H jumper and 5 EVAL6480H schematic 1 2 1 8 EVAL6480H schematic part 2 2 9 EVAL6480H layout top 12 EVAL6480H layout inner layer 2 12 EVAL6480H layout inner layer 3 13 EVAL6480H layout bottom 13 EVAL6482H jumper and connector location 14 EVAL6482H schematic 1 2 17 EVAL6482H schematic part 2 2 18 EVAL6482H layout top 21 EVAL6482H layout inner layer 2 21 EV
23. the SPI_IN connector black of the demonstration board to the 10 pin connector of the STEVAL PCCO009V2 board using the provided cable For connecting more devices to the same board please consult Section 6 Daisy chaining on page 29 Power up the demonstration boards The FLAG LED should turn on Click on the button with the USB symbol to connect the STEVAL PCCO009V2 board to the PC and initialize the evaluation environment The application automatically identifies the number of demonstration boards connected The evaluation environment is ready Before start working with the demonstration board the device must be configured according to the indications described in Section 3 Device configuration Warning Important the device configuration is mandatory The default configuration is not operative DoclD025458 Rev 2 23 31 Device configuration UM1685 3 3 1 24 31 Device configuration This section offers an overview of the basic configuration steps which are required for make the demonstration board operative More details about the configuration of the gate driving circuitry and the control algorithms are available in the 4354 L648x devices gate drivers setup Warning Important the device configuration is mandatory The default configuration is not operative Important before changing the device configuration verify that the device is in high impedance status power stage is disabled Voltage mo
24. tion is equal to the gate current gate multiplied by the controlled current time tec With a gate current of 64 mA and a controller current time of 1000 ns 64 nC are provided to the gate The gate current can be changed in order to speed up or slow down the commutation speed i e the slew rate of the power stage outputs in this case the controlled current time should be changed accordingly The boards are designed to operate with a VCC voltage of 15 V so the corresponding value for the integrated regulator should be set The UVLO threshold should be 11 V At each commutation some voltage oscillations are generated This noise could trigger the overcurrent protection This event is avoided by adding a blanking time after each commutation A blanking time of 500 ns prevents the occurrence of spurious overcurrent detection in most operative conditions DoclD025458 Rev 2 25 31 Device configuration UM1685 3 4 3 5 26 31 In conclusion the suggested configuration for the demonstration boards is following e VCC value 15 V e UVLO threshold 11 V 10 V on boot e Gate current 64 mA e Controlled current time 1 Deadtime 250 ns e Blanking time 500 ns e Turn OFF boost time disabled Overcurrent and stall detection thresholds The overcurrent protection and the stall detection EVAL6480H only are implemented by measuring the drain source voltage of the MOSFETS hence their value is a voltage and
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