ST EVAL-L9177A User manual

July 2017 DocID030859 Rev 1 1/20
1
UM2263
User manual
EVAL-L9177A demo board hardware
Introduction
The EVAL-L9177A is an Evaluation Board designed to evaluate L9177A, a smart power
device designed by STMicroelectronics in advanced BCD technology.
L9177 is able to drive all the relevant loads used in one/two cylinder powertrain applications
(Injectors, Relay, stepper motor, tachometer, etc.), to interface with Variable Reluctance
Sensors and Hall sensors, to monitor diagnostic functionalities and to interact with the main
networks present in powertrain environment (K-Line).
All channels are protected against short circuit and over-temperature condition.
The board can be connected to the SPC563M-DISP, the Discovery+ board developed for
the SPC563M64L.
www.st.com

Contents UM2263
2/20 DocID030859 Rev 1
Contents
1 Hardware description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.2 Microcontroller . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
2 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3 L9177A pinout and pin description . . . . . . . . . . . . . . . . . . . . . . 7
3.1 Board layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
4 Evaluation board main components and connectors . . . . . . . . . . . . . 12
5 Jumpers & connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5.1 Motherboard jumpers & connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
6 Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
6.1 Default Jumper setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
6.2 Getting started . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
6.2.1 Start up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Appendix A L9177A evaluation board schematic . . . . . . . . . . . . . . . . . . . . . . . . 18
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

DocID030859 Rev 1 3/20
UM2263 List of tables
3
List of tables
Table 1. L9177A pin descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Table 2. Motherboard jumpers and connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Table 3. Configuration jumpers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Table 4. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19

List of figures UM2263
4/20 DocID030859 Rev 1
List of figures
Figure 1. Application block diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Figure 2. Block diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Figure 3. L9177A pinout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Figure 4. Board front layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 5. Board back layout. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 6. Board front view . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 7. Motherboard main components and connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 8. Microcontroller connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 9. Expansion connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 10. L9177A evaluation board schematic. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

DocID030859 Rev 1 5/20
UM2263 Hardware description
18
1 Hardware description
The EVAL-L9177A-SPI board provides maximum flexibility, access to all pins to simplify the
evaluation and debug phase.
1.1 Block diagram
Figure 1. Application block diagram
1.2 Microcontroller
Standard APG connector 4 x 36.
PWM output
Configuration and diagnostic via SPI
Possibility to easily connect the board to other microcontroller boards through a wire
adaptor.
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Block diagram UM2263
6/20 DocID030859 Rev 1
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DocID030859 Rev 1 7/20
UM2263 L9177A pinout and pin description
18
3 L9177A pinout and pin description
Figure 3. L9177A pinout
Table 1. L9177A pin descriptions
Pin
Number Pin Name Description Class I/O Type
1 DIR Logic Input to set stepper motor direction Signal I
2 NC Not connected - -
3 VDD_TRK Tracking voltage regulator output PWR O
4 REXT External Resistor for precision current
reference Signal I
5 HS_OUT High Side Switch output PWR O
6 VRIN+ VRS positive differential input Signal I
7 VRIN- VRS negative differential input Signal I
8 VROUT VRS output Signal O
9 O2H O2 sensor Heater output PWR O
10 TACH Tachometer driver output PWR O
11 ILS_TACH Tachometer driver input Signal I
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L9177A pinout and pin description UM2263
8/20 DocID030859 Rev 1
12 GND_O2H O2 sensor heater ground PWR GND
13 NC Not connected - -
14 INO2H O2 sensor Heater input Signal I
15 RESET Reset signal to the micro Signal O
16 IN_REL2 Relay 2 parallel control input Signal I
17 IN_REL1 Relay 1 parallel control input Signal I
18 NC Not connected - -
19 NC Not connected - -
20 REL2 Relay 2 driver output PWR O
21 GND_P_1 Power ground relay 1-2 PWR GND
22 NC Not connected - -
23 REL1 Relay 1 driver output PWR O
24 NC Not connected - -
25 NC Not connected - -
26 NC Not connected - -
27 REL3 Relay 3 driver output PWR O
28 GND_P_2 Power ground for lamp PWR GND
29 NC Not connected - -
30 LAMP Lamp driver output PWR O
31 LAMP Lamp driver output PWR O
32 SO SPI data out Signal O
33 Si SPI data in Signal I
34 SCK SPI clock in Signal I
35 CS SPI Chip Select Signal I
36 KEY Key signal Signal I
37 INJ1 Injector1 driver output PWR O
38 IN1 Injector1 driver input command Signal I
39 GND_INJ1 Injector1 ground PWR GND
40 GND_INJ2 Injector2 ground PWR GND
41 IN2 Injector2 driver input command Signal I
42 INJ2 Injector2 driver output PWR O
43 KL_TX K-Line TX digital IN Signal I
44 KL_RX K-Line RX digital OUT Signal O
45 KL_Line K-Line PWR I/O
Table 1. L9177A pin descriptions (continued)
Pin
Number Pin Name Description Class I/O Type

DocID030859 Rev 1 9/20
UM2263 L9177A pinout and pin description
18
46 VDD 5V voltage regulator output PWR O
47 NC Not connected - -
48 PWM Logic input for stepper motor Signal I
49 VDD_SB 5V Standby voltage regulator output PWR O
50 VB Battery line to bridge 2 PWR I
51 OUTD Output bridge 2 PWR O
52 NC Not connected - -
53 OUTC Output bridge 2 PWR O
54 NC Not connected - -
55 NC Not connected - -
56 GND Analog and power ground PWR GND
57 GND Analog and power ground PWR GND
58 NC Not connected - -
59 NC Not connected - -
60 OUTB Output bridge 1 PWR O
61 OUTA Output bridge 1 PWR O
62 NC Not connected - -
63 VB_1 Battery line bridge1 PWR I
64 EN Logic input to enable stepper motor Signal I
Table 1. L9177A pin descriptions (continued)
Pin
Number Pin Name Description Class I/O Type

L9177A pinout and pin description UM2263
10/20 DocID030859 Rev 1
3.1 Board layout
Figure 4. Board front layout
Figure 5. Board back layout

DocID030859 Rev 1 11/20
UM2263 L9177A pinout and pin description
18
Figure 6. Board front view

Evaluation board main components and connectors UM2263
12/20 DocID030859 Rev 1
4 Evaluation board main components and connectors
Figure 7. Motherboard main components and connectors

DocID030859 Rev 1 13/20
UM2263 Jumpers & connectors
18
5 Jumpers & connectors
5.1 Motherboard jumpers & connectors
Table 2. Motherboard jumpers and connectors
Name Description Type
J1 Microcontroller VCC selector
Jumper:
ON: Microcontroller is
supplied by L9177A
VCC regulator
OFF:Microcontrolleris
externally supplied
J2 +5 V VCC output Screw connector:
1: +5V
2: GND
J3 VDD standby connector
Jumper:
ON: VDD standby is
connect to
microcontroller
OFF: VDD standby is
disconnect by
microcontroller
J4 Main Power supply connector Screw connector: 1: +VB
2: GND
J5 High-side driver output connector Screw connector: 1: HS_OUT
2: GND
J6 5 V tracking regulator output Screw connector: 1: +5 V traking
2: GND
J7 External key connector Screw connector: 1: VB
2: Key in
J8 External key selector
Jumper:
ON: The external key
isdisabled and thekey
input of L9177A is
HIGH
OFF: The external key
is enabled
J9 Expansion connector Please see Figure 9
J10 Stepper motor output Screw connector: 1: OUT A
2: OUT B

Jumpers & connectors UM2263
14/20 DocID030859 Rev 1
J11 Serial interface TX selector for k-line 3 way jumper: 1-2: serial 0
2-3: serial 1
J12 Stepper motor output Screw connector: 1: OUT C
2: OUT D
J13 Serial interface RX selector for k-line 3 way jumper: 1-2: serial 0
2-3: serial 1
J14 VRS differential input Screw connector: 1: VRS+
2: VRS-
J15 VRIN+ external network enable
Jumper:
ON: network
connected
OFF: network
disconnected
J16 K-Line connector
Strip:
1: VB
2: KL_LINE
3: GND
J17 Output connector
Screw connector:
1: VB
2: VB
3: INJ2_OUT
4: INJ1_OUT
5: LAMP_OUT
6: REL3
7: REL1_OUT
8: REL2_OUT
9: TACH_OUT
10: O2H_OUT
J18 Igntition output connector
1: IGN1_OUT
2:VB
3: IGN2_OU
4: VB
J19 VRIN- external network enable
Jumper:
ON: network
connected
OFF: network
disconnected
J20 Microcontroller connector See Figure 8
Table 2. Motherboard jumpers and connectors (continued)
Name Description Type

DocID030859 Rev 1 15/20
UM2263 Jumpers & connectors
18
J21 IGBT1 driver enable
Jumper:
ON: IGN1 connected
to IGBT
OFF: IGN1
disconnected to IGBT
J22 Reset connector
Jumper:
ON: L9177A reset
connected to uc Reset
input
OFF: L9177A reset
disconnected to uc
Reset input
J23 Water temperature sensor input Screw connector: 1: pull-up output
2: GND
J24 Boost pressure and temperature sensor input
Screw connector:
1: VCC
2: pull-up output
(temperature sensor)
3: Pressure sensor
input
4: GND
J25 Narrow band Lambda sensor input Screw connector: 1: Lamda sensor input
2: GND
J26 IGBT2 driver enable
Jumper:
ON: IGN2 connected
to IGBT
OFF: IGN2
disconnected to IGBT
Table 2. Motherboard jumpers and connectors (continued)
Name Description Type

Jumpers & connectors UM2263
16/20 DocID030859 Rev 1
Figure 8. Microcontroller connector
Figure 9. Expansion connector

DocID030859 Rev 1 17/20
UM2263 Functional description
18
6 Functional description
6.1 Default Jumper setting
6.2 Getting started
6.2.1 Start up
1. Configure all the jumper according to table
2. Connect a Power supply to J4 respecting the right polarity
3. Configure the power supply to 13.5 V and limit the current to 1A
4. Switch on the power supply
5. For further information connect uC and follow the related documentation to check the
internal register status of L9177A
Table 3. Configuration jumpers
Name Description Configuration
J1 Microcontroller VCC selector ON
J3 VDD standby connector OFF
J8 External key selector ON
J11 Serial interface TX selector for k-line 2-3
J13 Serial interface RX selector for k-line 2-3
J15 VRIN+ external network enable ON
J19 VRIN- external network enable ON
J21 IGBT1 driver enable ON
J22 Reset connector OFF
J26 IGBT2 driver enable ON

L9177A evaluation board schematic UM2263 18/20 DocID030859 Rev 1
Appendix A L9177A evaluation board schematic
Figure 10. L9177A evaluation board schematic
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DocID030859 Rev 1 19/20
UM2263 Revision history
19
Revision history
Table 4. Document revision history
Date Revision Changes
18-Jul-2017 1 Initial release.

UM2263
20/20 DocID030859 Rev 1
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