eval-l9788 hardware documentation - stmicroelectronics · sol12_pgnd sol2 ign5 prd1_drn ign6 23 24...

IntroductionThe EVAL-L9788 is an evaluation board designed to provide the user with a set of info tools for the evaluation of the productL9788, a multifunction IC for automotive engine management system. The board provides all the main input/output capabilitiesneeded to drive all the supported loads and to interface with sensors providing diagnostic functionalities.

EVAL-L9788 hardware documentation

UM2582

User manual

UM2582 - Rev 1 - May 2019For further information contact your local STMicroelectronics sales office.

www.st.com

http://www.st.com

1 Hardware description

The EVAL-L9788 board provides maximum flexibility, giving access to all pins to simplify the evaluation and thedebug phase of the device.

1.1 Block diagram

Figure 1. Application block diagram

PC

GADG2304190933PS

PWM

GPIO

SPI

MicroPower Connectors

ConnectorMicrocontroller

BoardL9788 Demo

Microcontroller

• Standard APG connector 4x36• GPIO/PWM output• Configuration and Diagnostic of L9788 via MSC (Microsecond Channel)• Possibility to easily connect the board to other microcontroller boards through a wire adaptor

UM2582Hardware description

UM2582 - Rev 1 page 2/23

2 L9788 block diagram

Figure 2. L9788 Block diagram

MOSFETPreDriver

IgnitionPredriver

MRD

LSD

LSD

LSD

MSCMicro Second Channel

6

CAN FD

LIN

WatchdogWDA

VRS

Wake Up

Key Off TimerSEO

WK_INENABLE

Regulator

Regulator MonitorDual

Bandgap

DualOscillator

Internal Regulator

Boost RegulatorDriver Buck RegulatorCharge Pump

VPRE

Regulator

Logic

Supply

Power Output

Pre Driver

Interface

2

4

6

42

6

5

5

5

3

3

4

CPRESET RSTN

BIST

GADG2411160929PS

VSENSE3VSENSE2VSENSE1

AD_TEST

VSENSE4_MON

KEY_IN

SEO_OUT

VB_STDBY

FLW_IN_NFLW_OUT

FLW_IN_P

RSTCVDD_IO

MSC_EN, MSC_DOMSC_DI_P,N

MSC_CK_P,N

GND_CANVB_CAN

VDD_CANCAN_LCAN_H

CAN_RXCAN_TX

LIN_RXLIN_TX

ISO11898-2

LIN/K-Line

Q & A WD_RST

2 x 6A

2 x 70mALSD (LED)

6 x 2.2A

6 x

5 x5 x

HSD/LSD0.6A3 x

3 Pins TestMode(PowerGND)

GND1

PDR_GND

PRDN1,2,3,4,5_DRN

PRDN1,2,3,4,5_Gate

MRD

STR1,2,3_SRC

STR1,2,3_DRN

EN_NEN_P

IGN1,2,3,4,5,6

INJ_ENA

CURR_Sense_O2H1,2O2HxPGND

O2HxxA,O2HxxB

SOL1..2INJ1..4

INJx_PGNDSOL12_PGND

LED1/2

5 x 0.6A

VDD5_IN

VDD5_GateVDD5

RLY1..5

WD_RSTVDD5_UVVcore_UV3 x Tracking

1 x ext Tracking

BUCK_C_BST

VB_IN BUCK_SWVB_IN_SWCPBOOST_GVBAT_Sense

UM2582L9788 block diagram

UM2582 - Rev 1 page 3/23

3 L9788 pinout and pin description

Figure 3. Pinout diagram

GADG2411160940PS

1

2

3

5

6

4

7

8

9

10

45

11

46 47 48 49 50

86 85 84 83 8182 80 79 78 77 76

70

69

68

66

65

67

75

74

73

71

72

LIN

LIN_RX

LIN_TX

FLW_IN_N

FLW_IN_P

FLW_OUT

MRD

WK_IN

KEY_IN

VB_STBY

VSENSE4_MONR

LY3

RLY

4

RLY

5

IGN

3

MSC

_EN

IGN

4

MSC

_CK_

P

MSC

_CK_

N

MSC

_DI_

P

MSC

_DI_

N

GN

D1

O2H

2A

O2H

2B

O2H

2_PG

ND

B

CU

RR

_Sen

se_O

2H2

Buck

_SW

VB_I

N_S

W

Buck

_C_B

ST

CP

VB_I

N

VBAT

_Sen

se

Boos

t_G

PDR_GND

VPRE

VSENSE1

VSENSE3

SOL1

VSENSE2

GND

RSTC

VDD5_GATE

AD_TEST

VDD5_IN

40 41 42 43 44

97 96 95 94 9293 91 90 89 88 87

GN

D

CAN

_RX

CAN

L

CAN

H

VDD

_CAN

CU

RR

_Sen

se_O

2H1

O2H

1_PG

ND

A

O2H

1A

O2H

1B

O2H

1_PG

ND

B

O2H

2_PG

ND

A

100 99 98

GN

D_C

AN

VB_C

AN

CAN

_TX

34 35 36 37 38 39

INJ_

ENA

EN_N

EN_P

IGN

1

RLY

1

IGN

2

RLY

2

INJ1

INJ1

_PG

ND

INJ2

_PG

ND

INJ2

29 30 31 32 33

SEO

_OU

T

VDD

_IO

MSC

_DO

26 27 28

12

13

14

16

17

15

18

19

20

21

22

59

58

57

55

54

56

64

63

62

60

61

STR2_SRC

STR1_SRC

STR1_DRN

INJ34_PGND

INJ3

INJ4

LED2

LED1

STR3_SRC

STR2_DRN

STR3_DRN

PRD1_GATE

PRD3_GATE

PRD3_DRN

PRD2_GATE

PRD4_GATE

PRD2_DRN

SOL12_PGND

SOL2

IGN5

PRD1_DRN

IGN6

23

24

25

52

51

53

RSTN

WDA

GND

PRD5_DRN

PRD5_GATE

PRD4_DRN

Table 1. Pin descriptions

Pin Number Name Function

1 FLW_IN_P Flying wheel inputs voltage positive

2 FLW_IN_N Flying wheel inputs voltage negative

3 FLW_OUT Flying wheel output voltage

4 LIN_TX LIN data input

5 LIN_RX LIN data output

6 LIN LIN driver output

UM2582L9788 pinout and pin description

UM2582 - Rev 1 page 4/23


7 VB_STBY Standby function supply voltage

8 VSENSE4_MON Tracking sensor supply monitor

9 KEY_IN Key signal input

10 WAKE_IN wake up signal input

11 MRD Main relay drivers outpour voltage

12 INJ3 Injector Driver output voltage

13 INJ34_PGND Ground


15 STR1_DRN Configurable high/low side drain voltage

16 STR1_SRC Configurable high/low side source voltage





21 LED1 LED Driver output voltage

22 LED2 LED Driver output voltage

23 GND Ground

24 WDA Watchdog output

25 RSTN Reset output for VDD5

26 SEO_OUT SEO output pin

27 VDD_IO Dedicated supply for FLW_OUT, MSC_DO,LIN_RX, CAN_RX

28 MSC_DO MSC digital I/O vloltage

29 INJ_ENA Enable pin for injector driverPower

30 EN_N enable signals

31 EN_P enable signals

32 IGN1 Ignition pre-driver output voltage


34 RLY1 Relay Driver output voltage



37 INJ1_PGND Ground

38 INJ2_PGND Ground







45 MSC_EN MSC digital I/O voltage

46 MSC_CK_P MSC digital I/O voltage


UM2582 - Rev 1 page 5/23


47 MSC_CK_N MSC digital I/O voltage

48 MSC_DI_P MSC digital I/O voltage

49 MSC_DI_N MSC digital I/O voltage

50 GND1 Power ground

51 PRD5_GATE General purpose pre-drivers gate voltage

52 PRD5_DRN General purpose pre-drivers feedback voltage











63 SOL2 Valve Driver output voltage

64 SOL12_PGND Ground

65 SOL1 Valve Driver output voltage

66 VSENSE3 5 V tracking sensor supply output voltage

67 VSENSE2 5 V tracking sensor supply output voltage

68 VSENSE1 5 V tracking sensor supply output voltagetracking sensor supply Monitor

69 VPRE Buck output voltage

70 PDR_GND Ground pin for predriver supply feedback input

71 AD_TEST AD test pin

72 VDD5_IN 5 V regulator feedback voltage

73 VDD5_GATE 5 V linear regulator pre-driver output

74 RSTC Reset output for VDDIO supply

75 GND Ground

76 Boost_G Boost LS gate voltage

77 VBAT_Sense Battery supply voltage

78 VB_IN Battery supply voltage

79 CP Charge pump

80 Buck_C_BST Bootstrap capacitor pin

81 Buck_SW Buck switching pin

82 VB_IN_SW Battery BUCK supply voltage

83 CURR_Sense_O2H2 O2heater drivers output current value

84 O2H2_PGNDA Ground

85 O2H2B_PGNDB O2H2B Driver output voltage

86 O2H2A Driver output voltage


UM2582 - Rev 1 page 6/23



88 O2H1_PGNDB Ground

89 O2H1B Driver output voltage

90 O2H1A O2H1A Driver output voltage


92 VDD_CAN CAN Supply 5 V

93 CURR_Sense_O2H1 O2heater drivers output current value

94 CANH CANH output

95 CANL CANL output

96 CAN_RX CAN RX data output

97 GND Ground

98 CAN_TX CAN TX data input

99 VB_CAN CAN Enable Signal

100 GND_CAN Ground CAN


UM2582 - Rev 1 page 7/23

4 Board layout

Figure 4. Board front layout

UM2582Board layout

UM2582 - Rev 1 page 8/23

Figure 5. Board back layout

UM2582Board layout

UM2582 - Rev 1 page 9/23

Figure 6. Board front view

UM2582Board layout

UM2582 - Rev 1 page 10/23

5 Jumpers and connectors

5.1 Mother board jumpers and connectors

Table 2. Mother board jumpers and connectors

Name Description Type

J1J1 Main battery input Screw connector

J2

1. VDD5 output2. VTRK1 output3. VTRK2 output4. VTRK3 output

Multi screw connector

J3

1. MRD output2. WAKE IN input3. KEY IN input4. VTRK external monitoring input5. VB stby input


J4

Ignition output 1..61. IGN12. IGN23. IGN34. IGN45. IGN56. IGN6


J5

Pre-driver output 1…51. DRN12. DRN23. DRN34. DRN45. DRN5


J6

Starter relay output 1…8:1. Battery2. STR1_DRN3. STR1_SRC4. STR2_DRN5. STR2_SRC6. STR3_DRN7. STR3_SRC8. GND


J7Injector output 1..21. INJ12. INJ2


J8Injector output 3..41. INJ32. INJ4


UM2582Jumpers and connectors

UM2582 - Rev 1 page 11/23


J9

Relay output 1..51. RLY12. RLY23. RLY34. RLY45. RLY5


J10

Lambda heater output 1..41. O2H12. Not Connected3. O2H24. Not Connected


J11Led Output 1..21. LED12. LED2


J12Solenoid driver output 1..21. SOL12. SOL2


J13

LIN/CAN Network connector1. LIN2. GND3. CANL4. CANH

Pin strip

J14

Flywheel sensor input connector1. GND2. E_F_DGH: Positive Hall sensor input

(please set JP21 accordingly)3. E_F_DGA: Positive variable reluctance

sensor input (please set JP21accordingly)

4. E_F_DGB: Negative variable reluctancesensor input (please set JP22accordingly)


J15 Microcontroller connector 4x36 multipin connector

JUMPERS

JP1 Wake-in jumperClosed : Wake-in asserted

Open: Wake in not asserted

JP2 VB_STBY jumperClosed : VB_STBY connected to battery

Open: VB_STBY not connected to battery

JP3 IGN2 output selector

3 way jumper:

1-2: L9788 IGN2 output connected externally by 50 ohm resistor

2-3: L9788 IGN2 output connected to IGBT gate


3 way jumper:




3 way jumper:



UM2582Mother board jumpers and connectors

UM2582 - Rev 1 page 12/23



3 way jumper:




3 way jumper:




3 way jumper:



JP9 SEO_INJ jumperClosed : SEO_INJ connected to INJ_ENA

Open : SEO_INJ not connected to INJ_ENA

JP11 EN_P jumperClosed : EN_P asserted

Open : EN_P not asserted

JP12 EN_N jumperClosed : EN_N asserted

Open : EN_N not asserted

JP13 VDD_CAN jumperClosed: VDD_CAN connected to 5 V, CAN transceiver is powered

Open: VDD_CAN not connected to 5 V, CAN transceiver is notpowered

JP14 CAN interface digital input level selector

3 ways jumper:

1-2: 5 V interface

2-3: 3.3 V interface

JP15 CAN enable jumper

Closed: VB_CAN connected to VB_STBY, CAN transceiver isenabled

Open: VB_CAN not connected to VB_STBY, CAN transceiver isdisabled

JP16 CAN_TX jumperClosed: CAN_TX is connected to the microcontroller connector(J15)

Open: CAN_TX is floating

JP17 CAN_RX jumperClosed: CAN_RX is connected to the microcontroller connector(J15)

Open: CAN_RX is floating

JP18 Lin Master/Slave selector

3 ways jumper:

1-2: LIN configured as master

2-3: LIN configured as slave

JP19 LIN_TX jumperClosed: LIN_TX is connected to the microcontroller connector (J15)

Open: LIN_TX is floating

JP20 LIN_RX jumperClosed: LIN_RX is connected to the microcontroller connector (J15)

Open: LIN_RX is floating

JP21 Flywheel sensor positive input selector

3 ways jumper:

1-2: Magnetic reluctance sensor positive input

2-3: Hall sensor


UM2582 - Rev 1 page 13/23


JP22 Flywheel sensor negative input selector

3 ways jumper:

1-2: Magnetic reluctance sensor negative input

2-3: Hall sensor polarization

JP23 CAN Ground JumperClosed : CAN ground connected to ground

Open: CAN ground floating

JP24 VPRE fault simulatorClosed: VPRE correctly connected to BUCK output

Open: VPRE floating

S1 Key-In switchON: KEY-IN asserted

OFF: KEY-IN not asserted

Figure 7. Microcontroller connector

GND

VDD5GND

VDD5

GND

GND

GND VDD5

RSTN

MSC_DI_NMSC_DI_P

RSTC

SPI_DIN

MSC_CK_NSPI_CLK

MSC_CK_P

MSC_EN

SPI_DO

LIN_RX

O2H1_CURRENT

MSC_DO

FLW_OUT

CAN_RX

CAN_TX

EN_NWAKE_IN

WDA

SEO_OUT

INJ_ENA

EN_P

O2H2_CURRENT

LIN_TX

R66 0

TESTMODE1

GND

TM_INTERNAL

AD_TESTA1A1A2A2A3A3A4A4A5A5A6A6A7A7A8A8A9A9A10A10A11A11A12A12A13A13A14A14A15A15A16A16A17A17A18A18A19A19A20A20A21A21A22A22A23A23A24A24A25A25A26A26A27A27A28A28A29A29A30A30A31A31A32A32

B1 B1B2 B2B3 B3B4 B4B5 B5B6 B6B7 B7B8 B8B9 B9

B10 B10B11 B11B12 B12B13 B13B14 B14B15 B15B16 B16B17 B17B18 B18B19 B19B20 B20B21 B21B22 B22B23 B23B24 B24B25 B25B26 B26B27 B27B28 B28B29 B29B30 B30B31 B31B32 B32

C1C1 D1 D1C2C2C3C3C4C4C5C5C6C6C7C7C8C8C9C9C10C10C11C11C12C12C13C13C14C14C15C15C16C16C17C17C18C18C19C19C20C20C21C21C22C22C23C23C24C24C25C25C26C26C27C27C28C28C29C29C30C30C31C31C32C32

D2 D2D3 D3D4 D4D5 D5D6 D6D7 D7D8 D8D9 D9

D10 D10D11 D11D12 D12D13 D13D14 D14D15 D15D16 D16D17 D17D18 D18D19 D19D20 D20D21 D21D22 D22D23 D23D24 D24D25 D25D26 D26D27 D27D28 D28D29 D29D30 D30D31 D31D32 D32

A33A33 B33 B33 C33C33 D33 D33A34A34 B34 B34 C34C34 D34 D34A35A35A36A36 B35 B35

B36 B36 D35 D35D36 D36C35C35

C36C36

J15

HEADER 36X4

R94

GADG2404191049PS


UM2582 - Rev 1 page 14/23

5.2 Default jumpers setting

Table 3. Jumpers configuration

Name Description Configuration

JP1 Wake-in not asserted Open

JP4 IGN3 output connected to IGBT gate 2-3





JP9 SEO_INJ not connected to INJ_ENA Open

JP11 EN_P asserted Closed

JP12 EN_N asserted Closed

JP13 VDD_CAN connected to 5V, CAN transceiver is powered Closed

JP14 CAN interface digital input level 5V interface 1-2

JP15 CAN transceiver is enabled Closed

JP16 CAN_TX TX is connected to the microcontroller connector (J15) Closed

JP17 CAN_RX TX is connected to the microcontroller connector (J15) Closed

JP18 LIN configured as master 1-2

JP19 LIN_TX is connected to the microcontroller connector (J15) Closed

JP20 LIN_RX is connected to the microcontroller connector (J15) Closed

JP21 Flywheel sensor Magnetic reluctance sensor positive input 1-2

JP22 Flywheel sensor Magnetic reluctance sensor negative input 1-2

JP23 CAN ground connected to ground Closed

JP24 VPRE correctly connected to BUCK output Closed

S1 Key-In switch ON: KEY-IN asserted OFF: KEY-IN notasserted

5.3 Getting started

5.3.1 Start up1. Configure all the jumper according to Table 3. Jumpers configuration;2. Connect a Power supply to JP1 respecting the right polarity;3. Configure the power supply connected to J1 to 13.5 V ;4. Switch on the power supply;5. Switch ON S1 (Key-in) to enable the device;6. For further information connect a µC and follow the related documentation to check the internal register

status of L9788.

UM2582Default jumpers setting

UM2582 - Rev 1 page 15/23

Appendix A L9788 Evaluation board schematics

Figure 8. EVAL-L9788 regulators schematic diagram

VB_IN78

Boost_G76

VBAT_SENSE77

VSENSE3 66

VSENSE1 68

VSENSE2 67V

B_I

N_S

W82

TAB

_GN

DTA

B

KEY_IN9

WAKE_IN10

VB_STBY7

VPRE 69

BUCK_SW 81

BUCK_C_BST 80

VDD5_IN 72

VDD5_GATE 73

CP79

VSENSE4_MON8

MRD11

U1AL9788

C18

10uF

GND

C25

0.47uF

C26

0.47uF

C27

0.47uF

GND GND GND

VTRK1

VTRK2

VTRK3

VDD5TP5VDD5

TP9VTRK1

TP11VTRK2

TP13VTRK3

L2

22uHD4

STPS3L60C8

10uF

C7

47nF

GND GND

C9

10uF

VPRETP3VPRE

C6

100nF

C4

10uF

GND

C1

10uF

C2

10uF

C3

10uF

L1 10uHD2STPS3L60

R52R2R6

150K / 100K

GND R7

22K

R12100K

R9 1K

C21

100nF

GND GND

D1STTH4R02

R10 1K

R13100K

GND

C22

100nF

GND

C23

100nF

GND

GND

VBAT

12

J1

PWR SUPPLY

VBATGND

R20R

D3TVS

GND

1234

J2

Regulators

VDD5VTRK1VTRK2VTRK3

VDD5_GATE

VDD5_GATE

VPRE

VDD5

C20

4.7nF

GND

MRD

KEY_INWAKE_IN

VB_STBY_EXT

JP1

WAKE_IN

VBAT

KEY_IN

WAKE_IN

MRD

VB_STBY_EXT

VTRK_EXT_MON

12345

J3

KEY_WAKE

VTRK_EXT_MON

TP6KEY_IN

TP7WAKE_IN

TP8MRD

TP10VB_STBY

TP12VTRK_EXT_MON

TP4Boost_G

TP2VB_IN

TP1VBAT

D5TVS

TPSMB36A

TPSMB15AHE3

C5

100nF

C10

100nF

JP2

VB_STBY

R11 0

GND

R1

R3

C12

C14

100nF

GND

R4

C13

C15

100nF

GND

C17

GND

C19

GND

C16

100nF

GND

R8 0

C24

100nF

GND

S1KEY_IN

D7 KEY

D8 WAKE

KEY_IN

GND

D6 VBVBAT

WAKE_IN

D9 VDD5VDD5

R14

4K7

R15

4K7

R16

4K7

R17

2K2

1. R1, R3, C12, C13, R4, C17, C19 , reversefootprint, not mounted at default2. D2, D4 -> modify SMC footprint tocompatible with SMB size3. L1, L2 -> footprint will be compatible with10.7*10 also 7.3*6.8 size inductor.4. VDD5 Ext. MOS-> BUK9Y40 is mounted atdefault, D2PAK/DAPK package is reserved.

C73

GND

C74

10uF

GND

C11

100uF

C77 C78 C79

JP24

VPRE

G1

S1

D1 Q2BUK9Y40

Q3STD20NF06

G1

S1

D1Q1NVMF5885N L \ BUK9Y40

C81

4.7nF

C80

4.7nF

GNDGND

D26TVS

GND

D27TVS

VB_STBY_EXT

C82

4.7nF

GND

VB_STBY

GADG2404191210PS

UM2582L9788 Evaluation board schematics

UM2582 - Rev 1 page 16/23

Figure 9. EVAL-L9788 drivers schematic diagram

INJ1 36INJ2 39INJ3 12INJ4 14

O2H2A 86O2H2B 85

SOL1 65SOL2 63

RLY1 34RLY2 35RLY3 40RLY4 41RLY5 42

LED1 21LED2 22

O2H1A 90O2H1B 89

MSC_DI_N49MSC_DI_P48 MSC_CK_N47MSC_CK_P46 MSC_EN45

MSC_DO28

EN_N30EN_P31INJ_ENA29

Curr_sense_O2H193 Curr_sense_O2H283 TESTMODE_INTERNAL97

STR1_DRN 15STR1_SRC 16

STR2_SRC 17STR2_DRN 18

STR3_DRN 19STR3_SRC 20

IGN

661

IGN

562

IGN

444

IGN

343

IGN

233

IGN

132

PDR1_DRN 60PDR1_GATE 59





INJ 2

_GN

D3 8

INJ3

4_G

ND

13

GN

D1

5 0

SOL1

2_G

ND

6 4

PDR

_GN

D70

INJ1

_PG

ND

37

O2 H

1_P G

ND

A9 1

O2 H

1_P G

ND

B88

O2H

2_PG

ND

A87

O2H

2_PG

ND

B84

WDA24

SEO_OUT26

U1BL9788

Q5STGD18N40LZT4

GND

TP15IGN2

R23

4K7

C29

1.5nF

JP3IGN2

Q9STGD18N40LZT4

TP19IGN1

R29

4K7

C33

1.5nF

JP8IGN1

GND

C53

4.7nF

C54

4.7nF

C49

4.7nF

C50

4.7nF

C51

4.7nF

C52

4.7nF

C45

4.7nF

C46

4.7nF

C47

4.7nF

C48

4.7nF

C55

4.7nF

C56

4.7nF

C57

4.7nF

C58

4.7nF

C59

4.7nF

GND

R35

100RR39

100R

MSC_ENMSC_CK_P

MSC_CK_NMSC_DI_P

MSC_DI_NMSC_DO

WDA

SEO_OUT

INJ_ENAEN_NEN_P

TM_INTERNAL

O2H1_CURRENTO2H2_CURRENT

Q6

STGD

18N40LZT4

GND

TP16IGN4

R25

4K7

C30

1.5nF

JP5IGN4

Q4

STGD

18N40LZT4

GND

TP14IGN3

R24

4K7

C28

1.5nF

JP4IGN3

Q8STGD18N40LZT4

GND

TP18IGN6

R28

4K7

C32

1.5nF

JP7IGN4

Q7

STGD

18N40LZT4

GND

TP17IGN5

R26

4K7

C31

1.5nF

JP6IGN3

GND

R30

10K

C34

4.7nF

GND

R33

10K

C35

4.7nF

GND

R34

10K

C36

4.7nF

GND

R37

10K

C37

4.7nF

GND

R40

10K

C38

4.7nF

C39

4.7nF

C40

4.7nF

C41

4.7nF

C42

4.7nF

C43

4.7nF

C44

4.7nF

GND

12345678

J6

STR HS/LS

123456

J4

IGN_OUT

12345

J5

PR-DRIVER

D14STPS2H100

D13

IGN1

IGN2 IGN3IGN4

IGN5IGN6

IGN1IGN2IGN3IGN4IGN5IGN6

DRN5DRN4DRN3DRN2DRN1

DRN1

DRN2

DRN3

DRN4

DRN5

D12D11D10 D10 to D14

UBR

STR1_DRNSTR1_SRCSTR2_DRNSTR2_SRCSTR3_DRNSTR3_SRC

STR1_DRNSTR1_SRCSTR2_DRNSTR2_SRCSTR3_DRNSTR3_SRCGND

UBR

INJ1INJ2INJ3INJ4

O2H1

O2H2

SOL1SOL2

RLY1RLY2RLY3RLY4RLY5

LED1LED2

12345

J9

RLY-DRIVER

RLY1RLY2RLY3RLY4RLY5

12

J7

INJ_DRIVER

12

J8

INJ_DRIVER

INJ1INJ2

INJ3INJ4

12

J11

LED_DRIVER

LED1LED21

2

J12

SOL_DRIVER

SOL1SOL2

1234

J10

O2H

D18STPS2H100

D17STPS2H100

D16STPS2H100

D15 STPS2H100

UBR

O2H1

O2H2

TP20DRN1

TP21 DRN2

TP23 DRN3

TP25 DRN4

TP28 DRN5

TP32 GATE5

TP30 GATE4

TP26 GATE3

TP24 GATE2

TP22 GATE1

TP44 INJ1TP46 INJ2

TP48 INJ3TP50 INJ4

TP51 O2H1A

TP55 O2H2A

TP58 SOL1TP59 SOL2

TP60 RLY1TP61 RLY2

TP62 RLY3TP63 RLY4

TP64 RLY5

TP65 LED1TP66 LED2

TP36 STR1_DRNTP38 STR1_SRC

TP39 STR2_DRNTP41 STR2_SRC

TP42 STR3_DRNTP43 STR3_SRCJP9

SEO_INJ

R48 1K

R49 1K

JP10SEO_TM_INTERNAL

TP27MSC_EN

TP29 MSC_CK_PTP31MSC_CK_N

TP33 MSC_DI_PTP34MSC_DI_N

TP35 MSC_DO

TP37WDA

TP40SEO_OUT

TP45INJ_ENA

TP47 EN_NTP49 EN_P

TP52TM_INTERNAL

TP54 O2H2_CURR_SENSETP56 O2H2_CURR_SENSE

O2H1_CURR_SENS

R27

50

R18

50

R19

50 R20

50R21

50 R22

50

R4310KVDDIO

R53

10K

JP12

EN_N

R52

10K

JP11

EN_P

GND

VDDIO

R505K1

R515K1

GND GND

EN_P

EN_N

GND

R38 0R / R050

R36 0R DRN4

R31 0R

R32 0R / R050DRN2

R44 0RR42 0RR41 0R

R47 0RR46 0RR45 0R

GND

UBR

PRE-DRIVER MSC_O2HPredr = '0': R36 (NC), R38, R84 0Ω R31 (NC), R32, R80 0Ω

MSC_O2HPredr = '1':R36(0Ω), R38, R84 (0.05Ω) R31(0Ω), R32, R80 (0.05Ω)

HS LSSTR1 R41 R42STR2 R44 R45STR3 R46 R47

R73 0R

R75 0R

R76 0R

R78 0R

R82 0R

D22D21D20D20 to D23

D23 STPS2H100

UBR

R72 1K

R67 1K R68 1KR69 1K

R70 1KR71 1K

GND

R74 1K

R77 1K

R79 1K

R81 1K

R83 1K

R80 0R / R050

R84 0R / R050

G2

D2

S2

Q11ASTL15DN4F5G1

D1

S1

Q11BSTL15DN4F5G2

D2

S2

Q12ASTL15DN4F5G1

D1

S1

Q12BSTL15DN4F5

G1

S1

D1 Q10STL70N4LLF5

O2H1B

GADG2404191500PS

UM

2582L9788 Evaluation board schem

atics

UM

2582 - Rev 1

page 17/23

Figure 10. EVAL-L9788 interface schematic diagram

FLW_IN_P1

FLW_IN_N2FLW_OUT 3

LINTX4LINRX5 LIN 6

CANTX98CANRX96 CANH 94CANL 95V

B_C

AN

99

GN

D_C

AN

100

TESTMODE123TESTMODE375

VD

D_C

AN

92

RSTN25RSTC74

AD_TEST71

VD

DIO

27

U1CL9788

JP17 CAN_RXJP16 CAN_TX

C654.7nF

GND

R5460R

R5560R

JP20 LIN_RXJP19 LIN_TX

C69

470pF

C70

470pF

R5810K 1%

R6110K 1%

C66100pF / 1.5nF

C71100pF / 1.5nF

R6033K

R5933K

C68100nF

C67470pF

GND

GND GND GND

E_F_DGA

E_F_DGB

FLW_OUT

1234

J13

CAN/K/LIN

CANLCANH

CANLCANH

LIN

LIN

JP21

FLW_IN_P

JP22

FLW_IN_N

R6433K

R6533K

GND

VDD5R63

27KC721nF

GND

R6227K

VTRK1

E_F_DGHGND

VDD5VB_STBY VDD5

1234

J14

VRS/Hall

GND

E_F_DGAE_F_DGB

E_F_DGH

TESTMODE1TESTMODE3

AD_TEST

RSTNRSTC

LIN_TXLIN_RX

CAN_TXCAN_RX

FLW_OUT

C63220pF

D19BAS40

R561k

C641nF

GND

JP18

LIN Master/Slave

TP69LIN

VBAT

JP14

VDDIO3V3_EXT

GND

TP68 RSTCTP67 RSTNR57 1K

C62

100nF

C60

100nF

C61

100nF

JP15 VB_CANJP13 VDD_CAN

GND

VDDIO

GND

TP72E_F_DGA

TP73E_F_DGB

R8710K

R8810K

C75

47pF

C76

47pF

GND GND

TP75 CANLTP77 CANH

L3

ACT45B-101

31

D24A

23

D24B

R850

R86 0

GND

31

D25A

GND

JP23GND_CAN

TP70 TESTMODE3

GADG2404191535PS

Figure 11. EVAL-L9788 MCU connector schematic diagram

GND

VDD5GND

VDD5

GND

GND

GND VDD5

RSTN

MSC_DI_NMSC_DI_P

RSTC

SPI_DIN

MSC_CK_NSPI_CLK

MSC_CK_P

MSC_EN

SPI_DO

LIN_RX

O2H1_CURRENT

MSC_DO

FLW_OUT

CAN_RX

CAN_TX

EN_NWAKE_IN

WDA

SEO_OUT

INJ_ENA

EN_P

O2H2_CURRENT

LIN_TX

R66 0

TESTMODE1

GND

TM_INTERNAL

AD_TESTA1A1A2A2A3A3A4A4A5A5A6A6A7A7A8A8A9A9A10A10A11A11A12A12A13A13A14A14A15A15A16A16A17A17A18A18A19A19A20A20A21A21A22A22A23A23A24A24A25A25A26A26A27A27A28A28A29A29A30A30A31A31A32A32

B1 B1B2 B2B3 B3B4 B4B5 B5B6 B6B7 B7B8 B8B9 B9

B10 B10B11 B11B12 B12B13 B13B14 B14B15 B15B16 B16B17 B17B18 B18B19 B19B20 B20B21 B21B22 B22B23 B23B24 B24B25 B25B26 B26B27 B27B28 B28B29 B29B30 B30B31 B31B32 B32

C1C1 D1 D1C2C2C3C3C4C4C5C5C6C6C7C7C8C8C9C9C10C10C11C11C12C12C13C13C14C14C15C15C16C16C17C17C18C18C19C19C20C20C21C21C22C22C23C23C24C24C25C25C26C26C27C27C28C28C29C29C30C30C31C31C32C32

D2 D2D3 D3D4 D4D5 D5D6 D6D7 D7D8 D8D9 D9

D10 D10D11 D11D12 D12D13 D13D14 D14D15 D15D16 D16D17 D17D18 D18D19 D19D20 D20D21 D21D22 D22D23 D23D24 D24D25 D25D26 D26D27 D27D28 D28D29 D29D30 D30D31 D31D32 D32

A33A33 B33 B33 C33C33 D33 D33A34A34 B34 B34 C34C34 D34 D34A35A35A36A36 B35 B35

B36 B36 D35 D35D36 D36C35C35

C36C36

J15

HEADER 36X4

MSC_ENMSC_CK_PMSC_CK_NMSC_DI_PMSC_DI_N

MSC_DO

WDASEO_OUT

INJ_ENAEN_NEN_P

TM_INTERNAL


TESTMODE1TESTMODE3

AD_TEST

RSTNRSTC

LIN_TXLIN_RX

CAN_TXCAN_RX

FLW_OUT

MSC_ENMSC_CK_PMSC_CK_NMSC_DI_PMSC_DI_NMSC_DO

WDASEO_OUT

INJ_ENA

EN_PEN_N

TM_INTERNAL


CAN_TXCAN_RX

TESTMODE1

AD_TEST

RSTNRSTC

LIN_TXLIN_RXFLW_OUT

R94

GADG2404191602PS

UM2582L9788 Evaluation board schematics

UM2582 - Rev 1 page 18/23

Revision history

Table 4. Document revision history

Date Version Changes

03-May-2019 1 Initial release.

UM2582

UM2582 - Rev 1 page 19/23

Contents

1 Hardware description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2

1.1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

2 L9788 block diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3

3 L9788 pinout and pin description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4

4 Board layout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

5 Jumpers and connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11

5.1 Mother board jumpers and connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

5.2 Default jumpers setting. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

5.3 Getting started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

5.3.1 Start up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

Appendix A L9788 Evaluation board schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16

Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19

UM2582Contents

UM2582 - Rev 1 page 20/23

List of tablesTable 1. Pin descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Table 2. Mother board jumpers and connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Table 3. Jumpers configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15Table 4. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

UM2582List of tables

UM2582 - Rev 1 page 21/23

List of figuresFigure 1. Application block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2Figure 2. L9788 Block diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3Figure 3. Pinout diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4Figure 4. Board front layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8Figure 5. Board back layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9Figure 6. Board front view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10Figure 7. Microcontroller connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14Figure 8. EVAL-L9788 regulators schematic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16Figure 9. EVAL-L9788 drivers schematic diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17Figure 10. EVAL-L9788 interface schematic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18Figure 11. EVAL-L9788 MCU connector schematic diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

UM2582List of figures

UM2582 - Rev 1 page 22/23

IMPORTANT NOTICE – PLEASE READ CAREFULLY

STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, enhancements, modifications, and improvements to STproducts and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on ST products before placing orders. STproducts 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 ofPurchasers’ 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. For additional information about ST trademarks, please refer to www.st.com/trademarks. All other product or servicenames are the property of their respective owners.

Information in this document supersedes and replaces information previously supplied in any prior versions of this document.

© 2019 STMicroelectronics – All rights reserved

UM2582

UM2582 - Rev 1 page 23/23

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