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Control and Acquisition Signals Headers J10 and J20 

June 2020 

LX7720 Daughter Board rev 2.1 

17 

© 2020 Microsemi Corporation 

 

4.14  Motor Connections 

Standard connections for the 

 24V, 8 phase, 3 pole BLDC motor used to develop the RTG4 

programming are J9 pin 1: yellow (coil A), pin 2: red (coil B), pin 3: black (coil C). 

1

2

3

4

J9

OSTOQ047150

MTR_COIL_A

MTR_COIL_B

MTR_COIL_C

MTR_COIL_D

.

.

 

Figure 21. Motor Winding Connections Schematic 

 

Control and Acquisition Signals Headers J10 and J20 

J20 is a 2x20 pin 0.1" pitch pin header which provides buffered control signals to an external controller (such as 

 
J10 provides direct connection to the HPC1-FMC (FPGA Mezzanine Card) connectors on the 

 and 

Table 14 below shows the FPGA pin routing for each LX7720 pin on these kits. 

 

FMC 

Pin 

LX7720 Signal 

Name 

LX7720 Signal Type and Function 

RTG4 Pin 

Number 

RTG4 Pin 

Name 

PolarFire 

Pin Number 

PolarFire Pin 

Name 

C11 

ADC1_C 

Buffered ADC2 bit stream output 

J11

 

MSIO248NB6

 

G16

 

GPIO5NB2

 

C27 

UD_IN_A_C 

Buffered UD_IN_A FET drive input 

A8

 

MSIO261NB6

 

D6

 

GPIO13NB2

 

D27 

LD_IN_C_C 

Buffered LD_IN_C FET drive input 

B8

 

MSIO252NB6

 

G11

 

GPIO18NB2

 

E10 

UD_IN_B_C 

Buffered UD_IN_B FET drive input 

F18

 

MSIO287NB5

 

T4

 

GPIO217NB4

F7 

UD_IN_C_C 

Buffered UD_IN_C FET drive input 

J19

 

MSIO296PB5

 

AB9

 

GPIO183PB4

F8 

LD_IN_B_C 

Buffered LD_IN_B FET drive input 

H19

 

MSIO296NB5

 

AA8

 

GPIO183NB4

F11 

LD_IN_A_C 

Buffered LD_IN_A FET drive input 

F20

 

MSIO299NB5

 

AB6

 

GPIO179NB4

F13 

SNS_OUT_A_C 

Buffered SNS_OUT_A bit stream output 

D19

 

MSIO294PB5

 

T7

 

GPIO218PB4

F14 

SNS_OUT_B_C 

Buffered SNS_OUT_B bit stream output 

C19

 

MSIO294NB5

 

U7

 

GPIO218NB4

F19 

BLO4 

Bi-Level Detector output 4 

C13

 

MSIO277PB5

 

AB4

 

GPIO177PB4

G9 

ADC3_C 

Buffered ADC3 bit stream output 

K10

 

MSIO242PB6

 

H16

 

GPIO32PB2

 

G16 

RESET 

RESET input via J40 link header 

G15

 

MSIO269NB6

 

E12

 

GPIO23NB2

 

G18 

OTW_FAULT 

OTW_FAULT output 

D11

 

MSIO268PB6

 

D10

 

GPIO26PB2

 

G21 

CP_CLK_C 

Buffered 150kHz ±50kHz CP_CLK charge 
pump clock input  

B10

 

MSIO270PB6

 

B9

 

GPIO25PB2

 

G24 

DMOD_IN_P_C 

Buffered DMOD_IN_P drive input 

B5

 

MSIO255PB6

 

D8

 

GPIO14PB2

 

G25 

UD_IN_D_C 

Buffered UD_IN_D FET drive input 

B6

 

MSIO255NB6

 

C8

 

GPIO14NB2

 

G28 

BLO6 

Bi-Level Detector output 6 

C6

 

MSIO246NB6

 

H11

 

GPIO4NB2

 

G30 

BLO5 

Bi-Level Detector output 5 

C3

 

MSIO243PB6

 

B10

 

GPIO28PB2

 

G31 

BLO3 

Bi-Level Detector output 3 

B3

 

MSIO243NB6

 

A10

 

GPIO28NB2

 

H7 

CLK_OUT_C 

Buffered CLK_OUT Σ-Δ mod clock output 

H8

 

MSIO245PB6

 

L19

 

GPIO34PB2

 

H8 

MOD_CLK_C 

Buffered 24MHz to 32MHz MOD_CLK Σ-Δ 
modulator clock input  

H9

 

MSIO245NB6

 

L18

 

GPIO34NB2

 

H10 

ADC2_C 

Buffered ADC2 bit stream output 

F9

 

MSIO258PB6

 

J18

 

GPIO33PB2

 

H13 

SNS_OUT_D_C 

Buffered SNS_OUT_D bit stream output 

G10

 

MSIO257PB6

 

K15

 

GPIO0PB2

 

H14 

SNS_OUT_C_C 

Buffered SNS_OUT_C bit stream output 

G11

 

MSIO257NB6

 

J15

 

GPIO0NB2

 

H17 

SM_EN 

SM_EN input via J39 link header 

D14

 

MSIO273NB6

 

K17

 

GPIO35NB2

 

H19 

OC_FAULT 

OC_FAULT output 

E9

 

MSIO259PB6

 

A7

 

GPIO16PB2

 

H20 

PR_FAULT 

PR_FAULT output 

D9

 

MSIO259NB6

 

A8

 

GPIO16NB2

 

H23 

DMOD_IN_N_C 

Buffered DMOD_IN_N drive input 

C9

 

MSIO256NB6

 

B6

 

GPIO17NB2

 

H25 

LD_IN_D_C 

Buffered LD_IN_D FET drive input 

A4

 

MSIO247PB6

 

H13

 

GPIO1PB2

 

H34 

BLO2 

Bi-Level Detector output 2 

F7

 

MSIO249PB6

 

G10

 

GPIO21PB2

 

H35 

BLO1 

Bi-Level Detector output 1 

F8

 

MSIO249NB6

 

F10

 

GPIO21NB2

 

K23 

SCP 

SCP input via J38 link header 

C16

 

MSIO282NB5

 

AB1

 

GPIO176NB4

Table 14. Mapping of HPC1-FMC pins, LX7720 pins, and RTG4 and PolarFire FPGA pins on the EVBs

Содержание LX7720

Страница 1: ...sense inputs The remaining three modulators sample differential analog inputs such as the filtered drive waveform and output waveforms of a resolver The LX7720 daughter board uses an FMC connector for...

Страница 2: ...uation Kit Board with 300K LE PolarFire FPGA in an FCG1152 Package Figure 3 ProASIC3E Starter Kit with A3PE1500 PQ208 FPGA Figure 4 SAMRH71F20 EK Evaluation Kit with SAMRH71F20 Arm Cortex M7 100MHz 20...

Страница 3: ...e register at the Microsemi SoC Customer Portal Once registered and logged in open a case with FPGA Technical Support 2 LX7720 Daughter Board to RTG4 Development Kit Setup Example These instructions c...

Страница 4: ...4 Using the GUI Run MC_UART exe in the GUIs BLDC motor v4 1 directory Select the third COM port from the top left drop down menu and click the red connect button immediately below For example if COM3...

Страница 5: ...hange the motor specifications The GUI automatically plots waveforms when motor starts running The block diagram below shows the input and output parameters Parameter OMEGA is used to check speed The...

Страница 6: ...ternally from the 24V external DC supply plugged into J11 VGS 15V VCC 5V VDD 3 3V VEE internal and selects control signals to be those provided at J10 RTG4 FMC connector or J20 40 way controller heade...

Страница 7: ...nternal VEE supply is used Do not attach an external supply to the J4 header 4 4 page 12 VEE select Pin 1 VEE Pin 2 GND When using external VEE supply in the range VGS to 8V apply VEE to header J4 and...

Страница 8: ...18 Pin 1 VDD Pin 2 GND When using external VDD supply in the range 2 75V to 3 6V apply the VDD supply to J18 and ensure that J16 is open so that regulator U4 is not back driven 4 2 page 10 External 2...

Страница 9: ...open Managed by controller on J10 or J20 J38 Open Lock LX7720 out of reset condition by setting RESET pin 18 low 4 10 page 14 Reset off Link 2 to 1 Disable Safe Mode by setting LX7720 SM_EN pin 17 lo...

Страница 10: ...ST C190GKT GREEN 10mA 1 2 J31 OSTOQ027150 1 2 J32 HDR_2_100MIL VGS_R C51 0 1uF 50V 0805 R49 10K 1 0805 R56 1K 1 0805 VGS Figure 9 VGS Gate Driver Supply 15V Regulator Schematic 4 2 VDD Logic Supply 3...

Страница 11: ...nal 4 5V to 5 5V power supply connected to J30 Table 4 Figure 11 Table 4 VCC Signal Supply 5V Regulator Link Settings VCC Regulator Source J35 Link J17 Link J30 Connector VCC is on board 5V using regu...

Страница 12: ...in the system under evaluation between MGND to SGND The absolute maximum potential difference allowed between MGND and SGND is 10V Table 6 LX7720 Reference Voltage Selection Link Settings Voltage Ref...

Страница 13: ...fault 33 Not fitted Internal 27MHz square wave clock from oscillator module Y2 0 Not fitted default Not fitted TRISTA 1 E PAD 7 GND 3 OUTPUT 4 VDD 6 NC1 2 NC2 5 Y2 ASVMPC 27 000MHZ LR T R73 0R 0805 DN...

Страница 14: ...RTG4 board or 40 pin header J20 pin 29 other controller A pull down resistor ensures that Simultaneous Conduction Protection is disabled by default if the external signal is open Link 2 to 3 Simultan...

Страница 15: ...H17 or 40 pin header J20 pin 27 A pull up resistor ensures that Safe Mode is enabled by default if the external signal is open Link 2 to 3 Enable Safe Mode by setting LX7720 SM_EN pin 17 high Open Fi...

Страница 16: ...3 red J14 pin 4 black Secondary 2 J14 pin 5 blue J14 pin 6 yellow Table 13 Resolver LVDT Link Settings Resolver LVDT Options J6 Link J7 Link J8 Link J14 Connector J13 Connector Resolver LVDT driver o...

Страница 17: ...F14 SNS_OUT_B_C Buffered SNS_OUT_B bit stream output C19 MSIO294NB5 U7 GPIO218NB4 F19 BLO4 Bi Level Detector output 4 C13 MSIO277PB5 AB4 GPIO177PB4 G9 ADC3_C Buffered ADC3 bit stream output K10 MSIO2...

Страница 18: ...ND B1 C1 GND D1 E1 GND A2 B2 C2 D2 E2 A3 B3 GND C3 D3 GND E3 A4 GND B4 GND C4 GND D4 GND E4 GND A5 GND B5 C5 GND D5 E5 GND A6 B6 C6 D6 E6 A7 B7 GND C7 D7 GND E7 A8 GND B8 GND C8 GND D8 GND E8 GND A9 G...

Страница 19: ...DJ H39 GND J39 VIO_B_M2C K39 GND F40 VADJ G40 GND H40 VADJ J40 GND K40 VIO_B_M2C Table 17 LX7720 Control and Acquisition Signals Header J20 Pinout Pin Signal Name Signal Function Pin Signal Name Signa...

Страница 20: ...VOUT 2 3V POT 34 09K VOUT 2 7V 5V 200mA 1 1 2 2 3 J1 HDR_3_100MIL VREF_IN C11 0 1uF 50V 0805 VIN 1 GND 2 EN 3 ADJ 4 VOUT 5 U2 ADP123AUJZ R7 1 3 2 R3 50K_15Turns C25A 10uF 50V 0805 C91 10uF 50V 0805 C...

Страница 21: ...S_OUT_D 27 LD_IN_D 10 UD_IN_D 9 SNS_OUT_C 26 LD_IN_C 8 UD_IN_C 7 SNS_OUT_B 25 LD_IN_B 6 UD_IN_B 5 SNS_OUT_A 24 LD_IN_A 4 UD_IN_A 3 BLO3 131 BLO4 132 BLO5 1 BLO6 2 VDD 23 VCC 34 SGND_1 22 SGND_2 32 SGN...

Страница 22: ...NL C108 1uF 50V 0805 R107 10K 1 0805 VGS R39 20R 1W 2512 R129 0 0805 R115 0 25R 2W 2512 C110 1uF 50V 0805 R110 10 0805 C109 1uF 50V 0805 DNL R108 0 0805 R116 0 0805 VGS R112 10K 1 0805 R113 10K 1 0805...

Страница 23: ...84 33R LD_IN_A_C LD_IN_B_C LD_IN_C_C LD_IN_D_C MOD_CLK_C DMOD_IN_N_C ADC3_C OC_FAULT OTW_FAULT BLO2 BLO4 BLO6 VDD_3P3V LD_IN_A ADC1 LD_IN_B ADC2 LD_IN_C ADC3 LD_IN_D 1DIR 1 1B1 2 1B2 3 GND 4 1B3 5 1B4...

Страница 24: ...DP8_M2C_N B9 GND25 B10 GND26 B11 DP7_M2C_P B12 DP7_M2C_N B13 GND27 B14 GND28 B15 DP6_M2C_P B16 DP6_M2C_N B17 GND29 B18 GND30 B19 GBTCLK1_M2C_P B20 GBTCLK1_M2C_N B21 GND31 B22 GND32 B23 DP9_C2M_P B24 D...

Страница 25: ...9 VGS Figure 28 50V Input to 15V Regulator C104 1uF 25V 0805 C105 0 1uF 25V 0805 R102 0 0805 3 3V 200mA 1 2 J18 OSTOQ027150 Default Shunt SPC02SYAN PIN 1 2 VDD_R VDD_3P3V VDD_3P3V_FMC 1 2 J16 HDR_2_10...

Страница 26: ...LX7720 Daughter Board User s Manual June 2020 LX7720 Daughter Board rev 2 1 26 2020 Microsemi Corporation Figure 31 PCB Top copper layer 1 and component IDs...

Страница 27: ...Complete Schematics June 2020 LX7720 Daughter Board rev 2 1 27 2020 Microsemi Corporation Figure 32 PCB Bottom copper layer and component IDs bottom view...

Страница 28: ...60 2 2uF 100V 1210 C1210 C3225X7R2A225K230AB TDK CAP CER 2 2UF 100V 10 X7R 1210 C62 5 6pF 50V 0805 C0805 C0805C569D5GACTU KEMET CAP CER 5 6PF 50V C0G NP0 0805 C63 2700pF 50V 0805 C0805 CL21B272KBANNNC...

Страница 29: ...ay TRIMMER 50K OHM 0 25W SMD R4 R5 R8 R9 R10 R11 R12 R13 R14 R16 R18 R20 R22 R24 R49 10K 1 0805 R0805 Y162910K0000F9R Vishay RES SMD 10K OHM 1 1 10W 0805 R6 100R 2W 2512 R2512 RHC2512FT100R Stackpole...

Страница 30: ...805 R0805 RC0805JR 074K7L Yageo RES SMD 4 7K OHM 5 1 8W 0805 SW1 SW_DPDT SW_DPDT_1201 1201M2S3CQE2 C K SWITCH SLIDE MINI DPDT PC 120V TP1 TPAD TP_0603 1625854 3 TE 0603 PROBE PAD TP10 TP11 TP12 TP13 T...

Страница 31: ...y whatsoever arising out of the application or use of any product or circuit The products sold hereunder and any other products sold by Microsemi have been subject to limited testing and should not be...

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