ST L9390 User Manual

Data Brief

For further information contact your local STMicroelectronics sales office.

March 2007 Rev 1 1/8

8

L9390

Twelve channel valve driver

Features

■ Four low side switched output drivers with

0.1Ω R

ds,ON

at 25°C

Possibly configurable as PWM controlled

adding external freewheeling diodes

■ Two low side PWM controlled output drivers

with 0.1Ω R

ds,ON

at 25°C and integrated active

freewheeling diodes

■ Six low side current controlled output drivers

with 0.16Ω R

ds,ON

at 25°C and integrated

active freewheeling diodes

Current accuracy:

–10% (I

load

< 800mA)

–6% (I

load

> 800mA)

■ All outputs with integrated 35V zener clamp

■ Five pin SPI port (four standard pins plus

additional SPI enable input pin)

■ Six serial high speed input for output control

■ High level diagnostic, including Silent Valve

Driver Test

■ Direct disable of outputs with an external pin

■ Programmable jitter frequency of PWM and

current controlled outputs

■ TQFP100 exposed pad package

Description

The L9390 is a twelve output low side valve driver

designed for use in an ABS/ESP vehicle system.

All outputs are PWM configurable, while six out of

twelve are current regulated. Each of the twelve

outputs is open drain configured and has a built-in

35V clamp. Eight of the twelve have integrated

active freewheeling diodes for active rectification

of the PWM controlled load.

In order to minimize electromagnetic emissions

during load actuation, the possibility to control

output slopes is provided.

Two separate communication interfaces are

present: the SPI port is primarily designated to

provide diagnostics and secondary control. The

serial High End Timer Interface (HET) provides

the primary output control functions from on/off

switching to current level control commands.

Diagnostic includes over current protection, under

current detection, open load detection, loss of

ground detection, loss of freewheeling diode, and

over temperature detection, output integrity

check, SVDT, leakage current test, PWM integrity

and functionality check, valve resistance sense

check, loss of freewheeling diode detection and

more.

Power supply monitoring is also included.

TQFP100

(Exposed pad down)

Table 1. Device summary

Part number Package Packing

L9390 TQFP100 14x14x1.0mm (exposed pad down) Tray

www.st.com

Pin description L9390

2/8

1 Pin description

Figure 1. Pin connection (top view)

1

2

3

5

6

4

7

8

9

10

45

11

46 47 48 49 50

86 85 84 83

81

82 80 79 78 77 76

70

69

68

66

65

67

75

74

73

71

72

PGND2_6

PGND2_6

N.C.

OUT2

OUT2

OUT2

OUT6

OUT6

PGND2_6

PGND2_6

PGND2_6

DGND

AGND

N.C.

N.C.

CS

CLKin

CLK

MISO

MOSI

BUSY

N.C.

OUT8

PGND4_8

PGND4_8

PGND4_8

OUT4

PGND4_8

OUT4

N.C.

D9

D9

D9

PGND9

PGND9

PGND9

OUT11

D11

OUT11

OUT9

OUT9

OUT9

PGND9

OUT9

AC00078

40 41 42 43 44

97 96 95 94

92

93 91 90 89 88 87

OUT7

OUT7

PGND3_7

PGND3_7

PGND3_7

PGND3_7

OUT3

OUT3

D8

D8

OUT8

100 99 98

N.C.

D7

D7

34 35 36 37 38 39

N.C.

HET1-6

HET1-6

HET1-6

HET1-6

HET1-6

HET1-6

V3

LOGI

VRS_Meas

OUT_EN

29 30 31 32 33

N.C.

V

S

VCP

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

PGND1_5

PGND1_5

OUT1

D6

D6

OUT1

OUT5

OUT5

PGND1_5

PGND1_5

PGND1_5

PGND10_12

PGND10_12

PGND10_12

PGND10_12

OUT12

PGND10_12

D11

D10

D10

OUT10

OUT10

23

24

25

52

51

53

N.C.

D5

D5

D12

D12

OUT12

Table 2. Pins description

Pin # Name Description

1-3 OUT2 Valve Low Side Driver output, Switched or PWMmed

4 N.C. Not Connected

5-9 PGND2_6 Dedicated Output Power Ground

10-11 OUT6 Valve Low Side Driver output, PWMmed or Current Regulated

12-13 D6 Freewheeling Diode Cathode

14-15 OUT1 Valve Low Side Driver output, Switched or PWMmed

16-20 PGND1_5 Dedicated Output Power Ground

21-22 OUT5 Valve Low Side Driver output, PWMmed or Current Regulated

23-24 D5 Freewheeling Diode Cathode

25-26 N.C. Not Connected

27 Vs Battery level Supply input voltage

L9390 Pin description

3/8

28 VCP Charge Pump voltage input

29 N.C. Not Connected

30-35 HET1-6 Serial High End Timer inputs

36 V3 3.3V supply input

37 LOGI Logic Supply Input, must be tied to V3

38 VRS_Meas Switch connection to pin D5 for the purpose of diagnosing specific load resistances.

39 OUT_EN Enables/ disables all outputs asynchronous to any other commands

40 DGND Circuit ground

41 AGND Signal Ground

42-43 N.C. Not Connected

44 CLKin Clock input for IC

45 CS SPI Chip Select input

46 CLK SPI Clock input

47 MISO SPI Master in Slave out

48 MOSI SPI Master out Slave in

49 BUSY SPI Enable input

50 N.C. Not Connected

51-52 D12 Freewheeling Diode Cathode

53-54 OUT12 Valve Low Side Driver output, Current Regulated

55-59 PGND10_12 Dedicated Output Power Ground

60-61 OUT10 Valve Low Side Driver output, Current Regulated

62-63 D10 Freewheeling Diode Cathode

64-65 D11 Freewheeling Diode Cathode

66-67 OUT11 Valve Low Side Driver output, PWMmed

68-71 PGND9 Dedicated Output Power Ground

72-75 OUT9 Valve Low Side Driver output, PWMmed

76-78 D9 Freewheeling Diode Cathode

79 N.C. Not Connected

80-81 OUT4 Valve Low Side Driver output, Switched or PWMmed

82-85 PGND4_8 Dedicated Output Power Ground

86-87 OUT8 Valve Low Side Driver output, PWMmed or Current Regulated

88-89 D8 Freewheeling Diode Cathode

90-91 OUT3 Valve Low Side Driver output, Switched or PWMmed

92-95 PGND3_7 Dedicated Output Power Ground

96-97 OUT7 Valve Low Side Driver output, PWMmed or Current Regulated

98-99 D7 Freewheeling Diode Cathode

100 N.C. Not Connected

Table 2. Pins description (continued)

Pin # Name Description