ST EVAL-L9177A User Manual
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ST EVAL-L9177A User Manual

ST EVAL-L9177A User Manual

Demo board hardware
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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.
July 2017
DocID030859 Rev 1
1/20
www.st.com
1

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Summary of Contents for ST EVAL-L9177A

  • Page 1 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...

  • Page 2: Table Of Contents

    Contents UM2263 Contents Hardware description ........5 Block diagram .
  • Page 3 UM2263 List of tables List of tables Table 1. L9177A pin descriptions ........... . 7 Table 2.
  • Page 4 List of figures UM2263 List of figures Figure 1. Application block diagram ........... 5 Figure 2.

  • Page 5: Hardware Description

    UM2263 Hardware description Hardware description The EVAL-L9177A-SPI board provides maximum flexibility, access to all pins to simplify the evaluation and debug phase. Block diagram Figure 1. Application block diagram Microcontroller  Standard APG connector 4 x 36.  PWM output ...

  • Page 6: Block Diagram

    Block diagram UM2263 Block diagram Figure 2. Block diagram 6/20 DocID030859 Rev 1...

  • Page 7: L9177A Pinout And Pin Description

    UM2263 L9177A pinout and pin description L9177A pinout and pin description Figure 3. L9177A pinout Table 1. L9177A pin descriptions Pin Name Description Class I/O Type Number Logic Input to set stepper motor direction Signal Not connected VDD_TRK Tracking voltage regulator output External Resistor for precision current REXT Signal...
  • Page 8 L9177A pinout and pin description UM2263 Table 1. L9177A pin descriptions (continued) Pin Name Description Class I/O Type Number GND_O2H O2 sensor heater ground Not connected INO2H O2 sensor Heater input Signal RESET Reset signal to the micro Signal IN_REL2 Relay 2 parallel control input Signal IN_REL1...
  • Page 9 UM2263 L9177A pinout and pin description Table 1. L9177A pin descriptions (continued) Pin Name Description Class I/O Type Number 5V voltage regulator output Not connected Logic input for stepper motor Signal VDD_SB 5V Standby voltage regulator output Battery line to bridge 2 OUTD Output bridge 2 Not connected...

  • Page 10: Board Layout

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

  • Page 11: Figure 6. Board Front View

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

  • Page 12: Evaluation Board Main Components And Connectors

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

  • Page 13: Jumpers & Connectors

    UM2263 Jumpers & connectors Jumpers & connectors Motherboard jumpers & connectors Table 2. Motherboard jumpers and connectors Name Description Type Jumper: ON: Microcontroller is supplied by L9177A Microcontroller V selector VCC regulator OFF: Microcontroller is externally supplied Screw connector: +5 V V output 1: +5V 2: GND...
  • Page 14 Jumpers & connectors UM2263 Table 2. Motherboard jumpers and connectors (continued) Name Description Type 3 way jumper: Serial interface TX selector for k-line 1-2: serial 0 2-3: serial 1 Screw connector: Stepper motor output 1: OUT C 2: OUT D 3 way jumper: Serial interface RX selector for k-line 1-2: serial 0...
  • Page 15 UM2263 Jumpers & connectors Table 2. Motherboard jumpers and connectors (continued) Name Description Type Jumper: ON: IGN1 connected IGBT1 driver enable to IGBT OFF: IGN1 disconnected to IGBT Jumper: ON: L9177A reset connected to uc Reset Reset connector input OFF: L9177A reset disconnected to uc Reset input Screw connector:...

  • Page 16: Figure 8. Microcontroller Connector

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

  • Page 17: Functional Description

    UM2263 Functional description Functional description Default Jumper setting Table 3. Configuration jumpers Name Description Configuration Microcontroller VCC selector VDD standby connector External key selector Serial interface TX selector for k-line Serial interface RX selector for k-line VRIN+ external network enable VRIN- external network enable IGBT1 driver enable Reset connector...

  • Page 18: Appendix A L9177A Evaluation Board Schematic

    Appendix A L9177A evaluation board schematic Figure 10. L9177A evaluation board schematic...

  • Page 19: Revision History

    UM2263 Revision history Revision history Table 4. Document revision history Date Revision Changes 18-Jul-2017 Initial release. DocID030859 Rev 1 19/20...
  • Page 20 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.

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