SPI Driver for Enhanced Relay Control
SPIDER - TLE7233G
Table of Contents
Table of Contents
Table of Contents
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1
2
2.1
3
3.1
3.2
4
4.1
4.2
4.3
5
5.1
6
6.1
6.2
6.3
6.4
7
7.1
7.2
7.3
7.4
8
8.1
8.2
9
9.1
9.2
9.3
9.4
9.5
10
11
12
Overview
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Block Diagram
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Voltage and current naming definition . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Pin Configuration
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Pin Assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Pin Definitions and Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
General Product Characteristics
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Functional Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Thermal Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Power Supply
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Limp Home Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Power Stages
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Input Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Inductive Output Clamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Timing Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Characteristics Power Stages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Protection Functions
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Over Load Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Over Temperature Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Reverse Polarity Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Characteristics Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
14
14
15
16
17
19
19
19
19
20
Diagnostic Features
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Open Load Diagnosis timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Electrical Characteristics Diagnostic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Serial Peripheral Interface (SPI)
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SPI Signal Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Daisy Chain Capability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SPI Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Timing Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Electrical Characteristics SPI . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
23
23
24
25
27
28
Application Information
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Package Outlines
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Revision History
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
Datasheet
2
Rev. 1.2, 2014-05-09
SPI Driver for Enhanced Relay Control
SPIDER - TLE7233G
TLE7233G
1
Features
•
•
•
•
•
•
•
•
•
Overview
4 channel low side relay driver
8-bit SPI for diagnostics and control
SPI providing Daisy Chain Capability
Limp Home functionality
Very wide range for digital Supply Voltage
Four input pins provide flexible and straightforward PWM operation
Stable behavior at Under Voltage
Green Product (RoHS compliant)
AEC Qualified
PG-SSOP-24-5
Table 1
Product Summary
Digital supply voltage
Analog supply voltage
ON State resistance at T
j
= 150°C for each channel
Nominal load current
Overload switch off threshold
Output leakage current per channel at 25 °C
Drain to Source clamping voltage
SPI clock frequency
Diagnostic Features
•
•
•
•
Latched diagnostic information via SPI
Over temperature monitoring
Over load detection in ON state
Open load detection in OFF state
V
DD
V
DDA
R
DS(ON)
I
D (nom,min)
I
D (OVL,max)
I
D (STB,max)
V
DS(AZ)
f
SCLK
3.0 V ... 5.5 V
4.5 V ... 5.5 V
2.2
Ω
390 mA
950 mA
1 µA
41 V
5 MHz
Type
TLE7233G
Datasheet
Package
PG-SSOP-24-5
3
Marking
TLE7233G
Rev. 1.2, 2014-05-09
SPI Driver for Enhanced Relay Control
SPIDER - TLE7233G
Overview
Protection Functions
•
•
•
•
Short circuit
Over load
Over temperature
Electrostatic discharge (ESD)
Application
•
•
All types of resistive, inductive and capacitive loads
Especially designed for driving relays in automotive applications
Description
The TLE7233G is a four channel low-side relay switch (1
Ω
per channel) in PG-SSOP-24-5 package providing
embedded protective functions. It is especially designed as a relay driver for automotive applications. The 8-bit
serial peripheral interface (SPI) is provided for control and diagnostics of the device and the loads. The SPI
interface provides daisy-chain capability.
The TLE7233G is equipped with four input pins that can be individually routed to the output control of their
corresponding channel and therefore offer complete flexibility in design and PCB layout. The input multiplexer is
controlled via SPI.
A limp home pin (LHI) provides a simple use of the input pins; this enables a direct connection between the input
pins and their corresponding outputs. The limp home function works also with
V
DDA
only in order to ensure
functionality even without the digital supply.
The device provides many diagnostics of the load enabling both open load and short circuit detection. The SPI
diagnostic bits indicate any eventual latched fault condition.
Each output stage is protected against short circuit. In case of over load, the affected channel switches off.
Temperature sensors are available for each channel in order to protect the device against over temperature.
The power transistors are made of N-channel vertical power MOSFETs. The inputs are CMOS compatible and are
referenced to Ground. The device is monolithically integrated in Smart Power Technology.
Datasheet
4
Rev. 1.2, 2014-05-09
京公网安备 11010802033920号
EEWORLD
