ST EVAL-L9001 User Manual
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ST EVAL-L9001 User Manual

ST EVAL-L9001 User Manual

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Introduction
EVAL-L9001 is a low cost tool designed to evaluate L9001, a smart power device designed by STMicroelectronics in advanced
BCD technology.
L9001 Simple Power Supply (SPS) device is a multiple output power regulator for automotive applications with one buck
regulator, one configurable buck or linear regulator and one linear regulator. Its output voltages are configurable via discrete
pins.
On top of the regulators, this device integrates a watchdog functional block, and a diagnosis functional block (under/over
voltage, output current and temperature).
Device is capable of low power operation mode with main regulators still active and reduced power consumption from battery.
EVAL-L9001 embeds a typical configuration for SPC5x microcontroller family supplying:
•
Buck 5 V output for peripheral supply
•
Buck 1.2 V output for core supply
•
LDO 5 V output for ADC reference supply
The expansion connector allows to monitor the different diagnostic reset signal, to enable the regulator and, if activated, to
service the windows watchdog.
UM2598 - Rev 1 - June 2019
For further information contact your local STMicroelectronics sales office.
EVAL-L9001 evaluation board
UM2598

User manual

www.st.com

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Summary of Contents for ST EVAL-L9001

  • Page 1: User Manual

    EVAL-L9001 evaluation board Introduction EVAL-L9001 is a low cost tool designed to evaluate L9001, a smart power device designed by STMicroelectronics in advanced BCD technology. L9001 Simple Power Supply (SPS) device is a multiple output power regulator for automotive applications with one buck regulator, one configurable buck or linear regulator and one linear regulator.

  • Page 2: Hardware Description

    UM2598 Hardware description Hardware description EVAL-L9001 is intended as low cost tool with pre-defined configuration that exemplify a typical application of L9001 as power supply for SPC5x family microcontroller. An optimized BOM for the proposed configuration has been analyzed: •...

  • Page 3: L9001 Block Diagram

    UM2598 L9001 block diagram L9001 block diagram Figure 2. L9001 block diagram VDDIO Charge Pump VDD1 regulator 3,3V, 5V, 6V bypass L9001 Voltage Monitor RSTN1 Stop mode VDD2 regulator 0,8V...5V Diagnosis Buck2 LDO2 300mA bypass WAKE Logic Voltage CONF3 = 0   VDD1 = 3,3V Monitor CONF3 = Z ...

  • Page 4: L9001 Pin Connection And Description

    UM2598 L9001 pin connection and description L9001 pin connection and description Figure 3. L9001 pins connection diagram (top view) ADCMON RSTN1 STBY RSTN2 VDDIO CONF3 VADC WAKE CONF2 CONF1 GADG3103170817PS Table 1. L9001 pin description Pin Number Pin Name Description Class I/O Type Exposed pad: connected to GND...

  • Page 5: Board Layout

    UM2598 Board layout Board layout Figure 4. TOP layer Figure 5. BOTTOM layer UM2598 - Rev 1 page 5/15...

  • Page 6: Figure 6. Assembly Top

    UM2598 Board layout Figure 6. Assembly TOP UM2598 - Rev 1 page 6/15...

  • Page 7: Main Components And Connectors

    UM2598 Main components and connectors Main components and connectors Figure 7. Components and connectors details UM2598 - Rev 1 page 7/15...

  • Page 8: Jumpers And Connectors

    UM2598 Jumpers and connectors Jumpers and connectors Table 2. Jumpers Name Description Type Expansion connector (Enable signal, Reset signals, Multi-pin connector Watchdog) Main battery positive connector (VB) Terminal VADC GND connector Terminal Solder jumper: Watchdog disable Closed (default) = Watchdog disabled Open = Watchdog enabled VADC positive connector Terminal...

  • Page 9: Functional Description

    UM2598 Functional description Functional description Default jumper setting Table 4. Jumper configuration Name Description Configuration Watchdog disable Soldered Getting started Make sure jumper [J4] is closed: Figure 8. Jumper J4 detail Step 1. Connect power supply positive output to [J2] and ground to [J8]. Step 2.

  • Page 10: Eval-L9001 Board Schematic

    EVAL-L9001 board schematic Figure 9. Board schematic ADCMON RSTN1 VDDIO RSTN2 VDDIO WAKE_EXT BOOT Imax = 3,5A 10uH/4.9A 4.7k STPS340B-TR 4.7k 4.7k 4.7k 47uF/50V VDDIO ADCMON CON9 ADCMON STBY RSTN1 STBY RSTN1 STBY 4.7k RSTN2 RSTN2 VDDIO VDDIO VDDIO VADC...

  • Page 11: Revision History

    UM2598 Revision history Table 5. Document revision history Date Version Changes 03-Jun-2019 Initial release. UM2598 - Rev 1 page 11/15...

  • Page 12: Table Of Contents

    EVAL-L9001 board schematic ........

  • Page 13: Um2598 - Rev 1

    UM2598 List of tables List of tables Table 1. L9001 pin description ..............4 Table 2.
  • Page 14 EVAL-L9001 block diagram ........

  • Page 15: Um2598 - Rev 1

    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 of Purchasers’...

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