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TLE7231G

SPIDER - 4 channel low side driver

Datasheet, Rev. 1.1, April 2011

Automotive Power

Summary of content (30 pages)

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Datasheet, Rev. 1.
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SPI Driver for Enhanced Relay Control SPIDER - TLE7231G Table of Contents Table of Contents Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 2 2.1 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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SPI Driver for Enhanced Relay Control SPIDER - TLE7231G 1 TLE7231G Overview Features • • • • • • • • 4 channel low side relay driver 8 bit SPI for diagnostics and control SPI providing Daisy Chain Capability Very wide range for digital Supply Voltage An input pin provides flexible and straightforward PWM operation Stable behavior at Under Voltage Green Product (RoHS compliant) AEC Qualified Table 1 PG-DSO-14-1 Product Summary VDD VDDA RDS(ON) IL (nom,min) ID (OVL,max) ID (STB,max) VDS(AZ) fSCLK Di
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SPI Driver for Enhanced Relay Control SPIDER - TLE7231G 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 TLE7231G is a four channel low-side relay switch (1 Ω per channel) in PG-DSO-14-1 package providing embedded protective functions.
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SPI Driver for Enhanced Relay Control SPIDER - TLE7231G Block Diagram 2 Block Diagram Figure 1 Block Diagram VDD VDDA RST OUT0 OUT1 IN input mux temperature sensor input register CS SCLK SI SPI control, diagnostic and protective functions OUT2 OUT3 short circuit detection gate control SO open load detection diagnosis register GND Overview.emf Datasheet 5 Rev. 1.
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SPI Driver for Enhanced Relay Control SPIDER - TLE7231G Block Diagram 2.1 Voltage and current naming definition Following figure shows all the terms used in this datasheet, with associated convention for positive values. Idda Idd Vdda I RS T V dd VRS T IIN V IN ICS VCS IS CLK VS CLK IS I VS I IS O V bat VDDA VDD RST OUT0 IN OUT1 CS OUT2 SCLK OUT3 SO I D1 I D2 I D3 V DS 0 V DS 1 VDS 2 VDS 3 SI VSO I D0 GND I GND Terms.
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SPI Driver for Enhanced Relay Control SPIDER - TLE7231G Pin Configuration 3 Pin Configuration 3.1 Pin Assignment (top view) RST 1 14 OUT0 CS 2 13 OUT1 IN 3 12 VDDA GND 4 11 GND SI 5 10 VDD SO 6 9 OUT2 SCLK 7 8 OUT3 P-DSO-14 .emf Figure 3 Pin Configuration 3.
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SPI Driver for Enhanced Relay Control SPIDER - TLE7231G Pin Configuration Pin Symbol I/O 1) 5 SI I PD serial data in; Digital input 3.3 V or 5V. 6 SO O Function serial data out; Digital input 3.3 V or 5V. 1) O: Output, I: Input, PD: pull-down resistor integrated, PU pull-up resistor integrated Datasheet 8 Rev. 1.
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SPI Driver for Enhanced Relay Control SPIDER - TLE7231G General Product Characteristics 4 General Product Characteristics 4.1 Absolute Maximum Ratings Absolute Maximum Ratings 1) Tj = -40 °C to +150 °C; VDD = 3.0 V to VDDA, VDDA = 4.5V to 5.5V. All voltages with respect to ground, positive current flowing into pin (unless otherwise specified) Pos. Parameter Symbol Limit Values Min. Max. Unit Conditions Power Supply 4.1.1 Digital supply voltage VDD -0.3 5.5 V – 4.1.
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SPI Driver for Enhanced Relay Control SPIDER - TLE7231G General Product Characteristics 3) VDD + 0.3 V < 5.5 V 4) ESD susceptibility, HBM according to EIA/JESD 22-A114B Note: Stresses above the ones listed here may cause permanent damage to the device. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Note: Integrated protection functions are designed to prevent IC destruction under fault conditions described in the data sheet.
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SPI Driver for Enhanced Relay Control SPIDER - TLE7231G Power Supply 5 Power Supply The TLE7231G is supplied by two power supply lines VDD and VDDA. The digital power supply line VDD is designed to be functional at a very wide voltage range. The analog power supply VDDA supports 5 V supply. Power-on reset functions have been implemented for both supply lines. After start-up of the power supply, all SPI registers are reset to their default values and the device remains in idle mode.
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SPI Driver for Enhanced Relay Control SPIDER - TLE7231G Power Stages 6 Power Stages The TLE7231G is a four channel low-side relay switch. The power stages are made of N-channel vertical power MOSFET transistors. 6.1 Input Circuit The TLE7231G has an input pin, that can be configured to be used for control of the output stages.
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SPI Driver for Enhanced Relay Control SPIDER - TLE7231G Power Stages V bat ID OUT L, RL VDS VDS(CL) GND OutputClamp .emf Figure 5 Output Clamp Implementation Maximum Load Inductance During demagnetization of inductive loads, energy has to be dissipated in the TLE7231G.
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SPI Driver for Enhanced Relay Control SPIDER - TLE7231G Power Stages 6.4 Electrical Characteristics Power Stages VDD = 3.0 V to VDDA, VDDA = 4.5V to 5.5V, Tj = -40 °C to +150 °C All voltages with respect to ground, positive current flowing into pin (unless otherwise specified) typical values: VDD = 5.0 V, VDDA = 5.0 V, Tj = 25 °C Pos. Parameter Symbol Limit Values Unit Conditions Min. Typ. Max. VDD IDD(ON) 3. 0 – 5.5 V – – – 0.
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SPI Driver for Enhanced Relay Control SPIDER - TLE7231G Power Stages VDD = 3.0 V to VDDA, VDDA = 4.5V to 5.5V, Tj = -40 °C to +150 °C All voltages with respect to ground, positive current flowing into pin (unless otherwise specified) typical values: VDD = 5.0 V, VDDA = 5.0 V, Tj = 25 °C Pos. 6.4.13 6.4.14 Parameter Symbol Limit Values Min. Typ. – – Unit Conditions µA VDS = 13.5 V Tj = 25 °C 1) Tj = 85 °C 1) Tj = 150 °C Max.
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SPI Driver for Enhanced Relay Control SPIDER - TLE7231G Protection Functions 7 Protection Functions Note: The device provides embedded protective functions. Integrated protection functions are designed to prevent IC destruction under fault conditions described in this datasheet. Fault conditions are considered as “outside” normal operating range. Protection functions are not designed for continuous repetitive operation. 7.
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SPI Driver for Enhanced Relay Control SPIDER - TLE7231G Protection Functions 7.4 Electrical Characteristics Protection VDD = 3.0 V to VDDA, VDDA = 4.5V to 5.5V, Tj = -40 °C to +150 °C All voltages with respect to ground, positive current flowing into pin (unless otherwise specified) typical values: VDD = 5.0 V, VDDA = 5.0 V, Tj = 25 °C Pos. Parameter Symbol Limit Values Min. Typ. Max. Unit Conditions Over Load Protection 7.4.1 Over load detection current ID(OVL) 0.5 – 0.95 A – 7.4.
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SPI Driver for Enhanced Relay Control SPIDER - TLE7231G Diagnostic Features 8 Diagnostic Features The SPI of TLE7231G provides diagnosis information about the device and about the load. The diagnosis information of the protective functions of channel n is latched in the diagnosis flag Dn. The open load diagnosis of channel n is latched in the diagnosis flag OLn. Both flags are cleared by INn = 00B and the diagnosis current ID(PD), which is a small pull down current, is disabled.
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SPI Driver for Enhanced Relay Control SPIDER - TLE7231G Diagnostic Features 8.2 Electrical Characteristics Diagnostic VDD = 3.0 V to VDDA, VDDA = 4.5V to 5.5V, Tj = -40 °C to +150 °C All voltages with respect to ground, positive current flowing into pin (unless otherwise specified) typical values: VDD = 5.0 V, VDDA = 5.0 V, Tj = 25 °C Pos. Parameter Symbol Limit Values Unit Conditions Min. Typ. Max. 1.0 – 2.5 V – OFF State Diagnosis 8.2.1 Open load detection threshold voltage 8.2.
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SPI Driver for Enhanced Relay Control SPIDER - TLE7231G Serial Peripheral Interface (SPI) 9 Serial Peripheral Interface (SPI) The diagnosis and control interface is based on a serial peripheral interface (SPI). The SPI is a full duplex synchronous serial slave interface, which uses four lines: SO, SI, SCLK and CS. Data is transferred by the lines SI and SO at the data rate given by SCLK. The falling edge of CS indicates the beginning of a data access.
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SPI Driver for Enhanced Relay Control SPIDER - TLE7231G Serial Peripheral Interface (SPI) TER SI 1 OR SO 0 SI SPI SO S CS SCLK S TER.emf Figure 11 Transmission Error Flag on SO Line CS Low to High transition: Data from shift register is transferred into the input matrix register only, when after the falling edge of CS exactly a multiple (1, 2, 3, …) of eight SCLK signals have been detected. SCLK - Serial Clock: This input pin clocks the internal shift register.
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SPI Driver for Enhanced Relay Control SPIDER - TLE7231G Serial Peripheral Interface (SPI) SI SO SI SO SPI CS CS SPI SCLK MI MCS MCLK Figure 12 SO SPI device 3 SCLK SI CS MO device 2 SCLK device 1 SPI_DasyChain.emf Daisy Chain Configuration In the SPI block of each device, there is one shift register where one bit from SI line is shifted in each SCLK. The bit shifted out can be seen at SO. After 8 SCLK cycles, the data transfer for one device has been finished.
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SPI Driver for Enhanced Relay Control SPIDER - TLE7231G Serial Peripheral Interface (SPI) Field INn (n = 3-0) Datasheet Bits Type Description 7:6, 5:4, 3:2, 1:0 W Input Register Channel n 00B Stand-by Mode: Fast channel switched off. Diagnosis flags are cleared. Diagnosis current is disabled. 01B Input Mode: Channel is switched according to signal at input pin. Diagnosis current is enabled in OFF-state. 10B ON Mode: Channel is switched on. Diagnosis current is enabled.
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SPI Driver for Enhanced Relay Control SPIDER - TLE7231G Serial Peripheral Interface (SPI) SO Reset Value: 100H CS1) 7 6 5 4 3 2 1 0 TER OL3 D3 OL2 D2 OL1 D1 OL0 D0 1) This bit is valid between CS hi -> lo and first SCLK lo -> hi transition. Field Bits Type Description TER CS R OLn (n = 3-0) 7, 5, 3, R 1 Open Load Flag of channel n 0 Normal operation. 1 Open load has occurred in OFF state. Dn (n = 3-0) 6, 4, 2, R 0 Diagnosis Flag of channel n 0 Normal operation.
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SPI Driver for Enhanced Relay Control SPIDER - TLE7231G Serial Peripheral Interface (SPI) 9.5 Electrical Characteristics SPI VDD = 3.0 V to VDDA, VDDA = 4.5V to 5.5V, Tj = -40 °C to +150 °C All voltages with respect to ground, positive current flowing into pin (unless otherwise specified) typical values: VDD = 5.0 V, VDDA = 5.0 V, Tj = 25 °C Pos. Parameter Symbol Limit Values Min. Typ. Max. 0 – 0.2* Unit Conditions Input Characteristics (CS, SCLK, SI) 9.5.1 9.5.2 9.5.3 9.5.
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SPI Driver for Enhanced Relay Control SPIDER - TLE7231G Serial Peripheral Interface (SPI) VDD = 3.0 V to VDDA, VDDA = 4.5V to 5.5V, Tj = -40 °C to +150 °C All voltages with respect to ground, positive current flowing into pin (unless otherwise specified) typical values: VDD = 5.0 V, VDDA = 5.0 V, Tj = 25 °C Pos. Parameter Symbol Limit Values Min. Typ. Max. Unit Conditions 9.5.19 Output enable time (falling CS to SO valid) tSO(en) – – 200 ns CL = 50 pF 1) 9.5.
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SPI Driver for Enhanced Relay Control SPIDER - TLE7231G Application Information 10 Application Information Note: The following information is given as a hint for the implementation of the device only and shall not be regarded as a description or warranty of a certain functionality, condition or quality of the device. Figure 15 shows a simplified application circuit. VDDA and VDD need to be reverse protected. Also the Resistors in the digital pins are for reverse polarity protection.
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SPI Driver for Enhanced Relay Control SPIDER - TLE7231G Package Outlines 11 Package Outlines 1.75 MAX. C 1) 4 -0.2 B 1.27 0.64 ±0.25 0.1 2) 0.41+0.10 -0.06 6±0.2 0.2 M A B 14x 14 0.2 M C 8 1 7 1) 8.75 -0.2 8˚MAX. 0.19 +0.06 0.175 ±0.07 (1.47) 0.35 x 45˚ A Index Marking 1) Does not include plastic or metal protrusion of 0.15 max. per side 2) Lead width can be 0.61 max.
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SPI Driver for Enhanced Relay Control SPIDER - TLE7231G Revision History 12 Version Revision History Date Changes Rev. 1.1 2011-04-12 new parameter 4.2.5 on page 10 “Analog supply turn-ON time” added Rev. 1.0 2008-02-28 initial released Datasheet Datasheet 31 Rev. 1.
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Edition 2011-04-12 Published by Infineon Technologies AG 81726 Munich, Germany © 2011 Infineon Technologies AG All Rights Reserved. Legal Disclaimer The information given in this document shall in no event be regarded as a guarantee of conditions or characteristics.