ST PTB801DC Manual de usuario

September 2013 Doc ID 14682 Rev 2 1/13

UM0547

User manual

PTB801DC

evaluation board for ABS valve drivers system

1 Overview

This document concern the main features of PTB801DC valve drivers for ABS board with

2 x L9349 devices.

1.1 Introduction

The PTB801DC is a complete demonstrator of an ABS system based on

STMicroelectronics devices. The board implements a flexible and open design

demonstrating the capability of the STMicroelectronics 16/32 bit microcontrollers and

devices for ABS applications. The PTB801DC mounts two L9349 devices and accept

external signal coming from PTB801 MB.

1.2 Main components

■L9349 valve drivers

■Connector for valves with supply

■Connector for I/O, enables signals

■Standardized CPU board connector (PTB801 MB) providing access to off board I/O,

PWM, SPI and power supply

www.st.com

Contents UM0547

2/13 Doc ID 14682 Rev 2

Contents

1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

1.2 Main components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

2 Evaluation board description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

2.1.1 L9349 quad intelligent power low-side switch . . . . . . . . . . . . . . . . . . . . . 5

2.2 Board connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

3 Before you start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10

3.1 How to exercise diagnostic functionality . . . . . . . . . . . . . . . . . . . . . . . . . . 10

4 Hardware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

4.1 PTB801DC overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

5 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

UM0547 List of tables

Doc ID 14682 Rev 2 3/13

List of tables

Table 1. Valve connectors J5 and J6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Table 2. Valve connectors J4, J8 and J10 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Table 3. Valve connectors J7, J9 and J11 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Table 4. Valve connectors J3 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Table 5. Document revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

List of figures UM0547

4/13 Doc ID 14682 Rev 2

List of figures

Figure 1. L9349 pin connection (top view) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5

Figure 2. L9349 block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6

Figure 3. Valves controlled by first L9349 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Figure 4. Valves controlled by second L9349 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7

Figure 5. First L9349 signals monitoring connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Figure 6. Second L9349 signals monitoring connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Figure 7. Enabled status connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9

Figure 8. Layout 2 x L9349 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

UM0547 Evaluation board description

Doc ID 14682 Rev 2 5/13

2 Evaluation board description

The PTB801DC is a valve drivers board for ABS system based on STMicroelectronics

devices. The board implements a flexible and open design demonstrating the capability of

the STMicroelectronics for ABS applications. The PTB801DC mounts two L9349 devices,

the control coming from UN24 mother board.

The board has opened connectivity to external valves.

2.1 Features

General features of this board are:

●Full evaluation and development system based on the system basis chip L9349

●Full system evaluation: integration, basic and safety functions

2.1.1 L9349 quad intelligent power low-side switch

The L9349 is a monolithic integrated quad low side driver realized in an advanced

BCDmultipower mixed technology. The device is intended to drive valves in automotive

environment.

The L9349 is a quad low-side driver with following functions:

●Quad power low side driver with 2 x 5 A and 2 x 3 A output current capability

●Low RDSON typically 200 mand 300 m@ Tj= 25 °C

●Internal output clamping structures with VFB = 50V for fast inductive load current

recirculation

●Limited output voltage slew rate for low EMI

●Protected µP compatible enable and input

●Wide operating supply voltage range 4.5 V to 32 V

Figure 1. L9349 pin connection (top view)

20 PGND

19 OUT4

D418

IN117

16 EN

GND15

IN214

13 D3

OUT312

PGND11

PGND 1

OUT1 2

IN4 4

VS 5

IN3 7

D2 8

OUT2

PGND 10

00AT0026

Heat sink connected

to pins 1, 10, 11, 20

Evaluation board description UM0547

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●Real time diagnostic functions:

– Output shorted to GND

– Output shorted to VSS

– Open load detection in ON and OFF condition

– Load bypass detection

– Overtemperature detection

●Device protection functions:

– Overload disable

– Selective thermal shutdown

●Signal- and power-ground-loss shutdown

Figure 2. L9349 block diagram

Diagnostic

Control

QS Delay

Time Overload

Overtemp

Output Control

Openload

52V

Channel 4

Channel 1

Channel 2

Channel 3 OUT3

OUT2

OUT4

OUT1

IN1

IN4

IN2

IN3

GND

00AT0025

UM0547 Evaluation board description

Doc ID 14682 Rev 2 7/13

2.2 Board connections

PTB801DC has many connector to communicate with:

●UN24 mother board

●External valves

The following table describes the pin out of the valve connectors J5 and J6:

On the board, there are three connectors to monitoring the input (INx_1), output (Qx_1), and

status (STx_1) of the drivers.

Figure 3. Valves controlled by first L9349

Figure 4. Valves controlled by second L9349

Table 1. Valve connectors J5 and J6

Name Figure Description

J5 Pin 1

Figure 3.

Output Q1 of first driver

J5 Pin 2 Output Q2 of first driver

J5 Pin 3 Output Q3 of first driver

J5 Pin 4 Output Q4 of first driver

J5 Pin 5 Coil Supply

J6 Pin 1

Figure 4.

Output Q1 of second driver

J6 Pin 2 Output Q2 of second driver

J6 Pin 3 Output Q3 of second driver

J6 Pin 4 Output Q4 of second driver

J6 Pin 5 Coil Supply

Q2_1

Q3_1

Q1_1

Q4_1

Valv e_1

Coil_Supply

Q2_2

Q3_2

Q4_2

Q1_2

Valv e_2

Coil_Supply

Evaluation board description UM0547

8/13 Doc ID 14682 Rev 2

The following table describes the pin out of the first signals monitoring connectors J4, J8

and J10:

On the board, there are three connectors to monitoring the input (INx_2), output (Qx_2), and

status (STx_2) of the drivers.

The following table describes the pin out of the second signals monitoring connectors J7, J9

and J11:

Figure 5. First L9349 signals monitoring connectors

Table 2. Valve connectors J4, J8 and J10

Name Figure Description

J4 Pin 1

Figure 5.

Status Q1 of first driver

J4 Pin 2 Status Q2 of first driver

J4 Pin 3 Status Q3 of first driver

J4 Pin 4 Status Q4 of first driver

J8 Pin 1 Input Q1 of first driver

J8 Pin 2 Input Q2 of first driver

J8 Pin 3 Input Q3 of first driver

J8 Pin 4 Input Q4 of first driver

J10 Pin 1 Output Q1 of first driver

J10 Pin 2 Output Q2 of first driver

J10 Pin 3 Output Q3 of first driver

J10 Pin 4 Output Q4 of first driver

Figure 6. Second L9349 signals monitoring connectors

ST1_1

ST4_1

ST2_1

ST3_1

ST1_1

ST3_1

ST2_1

ST4_1

STx_1

IN2_1

IN4_1

IN1_1

IN3_1

IN1_1

IN3_1

IN2_1

IN4_1

INx_1

Q1_1

Q2_1

Q3_1 Q3_1

Q4_1

Q2_1

Q1_1

Q4_1

J10

Qx_1

STx_2

ST4_2

ST1_2

ST2_2

ST3_2

ST1_2

ST3_2

ST2_2

ST4_2

INx_2

IN2_2

IN4_2

IN3_2

IN1_2

IN3_2

IN4_2

IN2_2

J11

Qx_2

Q2_2

Q1_2

Q3_2 Q3_2

Q1_2

Q2_2

Q4_2

UM0547 Evaluation board description

Doc ID 14682 Rev 2 9/13

On the board there are a connector to monitoring the enabled status of the L9349 drivers.

The following table describes the pin out of the enable L9349 drivers:

Table 3. Valve connectors J7, J9 and J11

Name Figure Description

J7 Pin 1

Figure 6.

Status Q1 of second driver

J7 Pin 2 Status Q2 of second driver

J7 Pin 3 Status Q3 of second driver

J7 Pin 4 Status Q4 of second driver

J9 Pin 1 Input Q1 of second driver

J9 Pin 2 Input Q2 of second driver

J9 Pin 3 Input Q3 of second driver

J9 Pin 4 Input Q4 of second driver

J11 Pin 1 Output Q1 of second driver

J11 Pin 2 Output Q2 of second driver

J11 Pin 3 Output Q3 of second driver

J11 Pin 4 Output Q4 of second driver

Figure 7. Enabled status connectors

Table 4. Valve connectors J3

Name Figure Description

J3 Pin 1

Figure 7.

Enable first L9349 valve driver

J3 Pin 2 Enable second L9349 valve driver

ENA_1 ENA_1 1

ENA

ENA_2 ENA_2

Before you start UM0547

10/13 Doc ID 14682 Rev 2

3 Before you start

This section describes operations needed before powering up the board.

Before powering up the mother board, could connect:

●Daughter board 2 x L9349

●Wheel Speed Sensor board

●µC mini module (ST10/SPC family)

3.1 How to exercise diagnostic functionality

The PTB801DC has many diagnostic features. Please see the L9349 datasheet for detail.

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