BTS4175SGA

Data Sheet, Rev.1.0, April 2008 BTS4175SGA Smart High-Side Power Switch Automotive Power BTS4175SGA 1 2 3 3.1 3.2 3.3 4 4.1 4.2 4.3 5 5.1 5.2 5.3 5.4 6 6.1 6.2 6.3 6.4 6.5 6.6 7 7.1 7.2 7.2.1 7.2.2 7.3 8 8.1 8.2 9 9.1 10 11 Overview 3 Block Diagram 5 Pin Configuration 6 Pin Assignment 6 Pin Definitions and Functions 6 Voltage and Current Definition 7 General Product Characteristics 8 Absolute Maximum Ratings 8 Functional Range 9 Thermal Resistance 9 Power Stage 10 Output ON-State Resistance 10 Turn ON / OFF Characteristics 10 Inductive Output Clamp 11 Electrical Characteristics Power Stage 13 Protection Mechanisms 14 Loss of Ground Protection 14 Undervoltage Protection 14 Overvoltage Protection 14 Reverse Polarity Protection 15 Overload Protection 15 Electrical Characteristics Protection Functions 17 Diagnostic Mechanism 18 ST Pin 18 ST Signal in Case of Failures 18 Diagnostic in Open Load, Channel OFF 18 ST Signal in case of Over Temperature 20 Electrical Characteristics Diagnostic Functions 21 Input Pin 22 Input Circuitry 22 Electrical Characteristics 22 Application Information 23 Further Application Information 23 Package Outlines 24 Revision History 25 Data Sheet 2 Rev.1.0, 2008-04-29 Smart High-Side Power Switch BTS4175SGA 1 • • • • • • • • • • Overview Fit for 12V and 24V application One Channel device Very Low Stand-by Current CMOS Compatible Inputs Electrostatic Discharge Protection (ESD) Optimized Electromagnetic Compatibility Logic ground independent from load ground Very Low Leakage Current from OUT to the load in OFF state Green Product (RoHS compliant) AEC Qualified Basic Features PG-DSO-8-24 Description The BTS4175SGA is a single channel Smart High-Side Power Switch. It is embedded in a PG-DSO-8-24 package, providing protective functions and diagnostics. The power transistor is built by a N-channel power MOSFET with charge pump. The device is monolithically integrated in Smart technology. It is specially designed to drive Relay, R5W lamp or LED in the harsh automotive environment. Table 1 Parameter Operating voltage range Over voltage protection Maximum ON State resistance at Tj = 150°C Nominal load current Minimum current limitation Standby current for the whole device with load Maximum reverse battery voltage Diagnostic Feature • • • • Open load in OFF Feedback of the thermal shutdown in ON state Feedback of the current limitation Diagnostic feedback with open drain output Electrical Parameters (short form) Symbol Value 6V .... 52V 62V 350mΩ 1.3A 6A 18µA 52V VSOP VS (AZ) RDS(ON) IL (nom) IL_SCR IS(off) -Vs(REV) Type BTS4175SGA Data Sheet Package PG-DSO-8-24 3 Marking 4175SGA Rev.1.0, 2008-04-29 BTS4175SGA Overview Protection Functions • • • • • • • Short circuit protection Overload protection Current limitation Thermal shutdown Overvoltage protection (including load dump) with external resistor Loss of ground and loss of battery protection Electrostatic discharge protection (ESD) Application • All types of relays, lamps and resistive loads Data Sheet 4 Rev.1.0, 2008-04-29 BTS4175SGA Block Diagram 2 Block Diagram VS internal power supply voltage sensor over temperature gate control & charge pump T clamp for inductive load over current switch off OUT IN E SD protection ST driver logic open load detection GND Block diagram .emf Figure 1 Block diagram for the BTS4175SGA Data Sheet 5 Rev.1.0, 2008-04-29 BTS4175SGA Pin Configuration 3 3.1 Pin Configuration Pin Assignment GND IN OUT ST 1 2 3 4 8 7 6 5 VS VS VS VS Figure 2 Pin Configuration 3.2 Pin 1 2 3 4 5, 6, 7, 8 Pin Definitions and Functions Symbol GND IN OUT Function Ground; Ground connection Input channel; Input signal. Activate the channel in case of logic high level Output; Protected High side power output channel Diagnostic feedback; of channel. Open drain. Battery voltage; Design the wiring for the simultaneous max. short circuit current and also for low thermal resistance ST VS Data Sheet 6 Rev.1.0, 2008-04-29 BTS4175SGA Pin Configuration 3.3 Voltage and Current Definition Figure 3 shows all terms used in this data sheet, with associated convention for positive values. VS IIN VIN VS IN IS VD S OUT IL VOU T IST V ST ST GND R GND I GN D Voltage and current convention single avec diag.vsd Figure 3 Voltage and current definition Data Sheet 7 Rev.1.0, 2008-04-29 BTS4175SGA General Product Characteristics 4 4.1 General Product Characteristics Absolute Maximum Ratings Absolute Maximum Ratings 1) TJ = 25°C; (unless otherwise specified) Pos. Voltages 4.1.1 4.1.2 4.1.3 Supply voltage Reverse polarity Voltage Parameter Symbol Limit Values Min. Max. 52 52 36 V V V – – Unit Conditions VS - VS(REV) – 0 0 Supply voltage for short circuit protection Vbat(SC) RECU = 20mΩ, RCable=16mΩ/m, LCable=1µH/m, l = 0 or 5m 2) Input pins 4.1.4 4.1.5 4.1.6 4.1.7 4.1.8 Voltage at INPUT pins Current through INPUT pins Load current Power dissipation (DC), Inductive load switch off energy dissipation, Single pulse see Chapter 6 VIN IIN | IL | -10 -5 – – – 16 5 IL(LIM) 1.5 125 V mA A W mJ – – – Power stage PTOT EAS TA=85°C, Tj V(OL) H L L ST H H L1) H H L Table 3 gives a quick reference for the logical state of the ST pin during device operation. Device operation Normal operation Open Load channel Over temp channel 1) L if potential at the output exceeds the Openload detection voltage 7.2.1 Diagnostic in Open Load, Channel OFF For open load diagnosis in OFF-state, an external output pull-up resistor (ROL) is recommended. For calculation of the pull-up resistor value, the leakage currents and the open load threshold voltage VOL(OFF) has to be taken into account. Figure 13 gives a sketch of the situation and Figure 14 shows the typical timing diagram. Ileakage defines the leakage current in the complete system, including IL(OFF) (see Chapter 5.4) and external leakages e.g due to humidity, corrosion, etc... in the application. To reduce the stand-by current of the system, an open load resistor switch SOL is recommended. Data Sheet 18 Rev.1.0, 2008-04-29 BTS4175SGA Diagnostic Mechanism If the channel is OFF, the output is no longer pulled down by the load and VOUT voltage rises to nearly VS. This is recognized by the device as open load. The voltage threshold is given by VOL(OFF). In that case, the ST signal is switched to a logical low VSTL. Vbat SOL BTS4175SGA VS R OL OUT OL comp. GND I LOFF R PD Ileakage VOL(OFF ) RGND Rleakage Open Load in OFF .vsd Figure 13 Open load detection in OFF electrical equivalent circuit IN t V OUT VOL(OFF) IL t ST V ST(HIGH) VST(LOW) t t Diagnostic In Open load full diag.vs Figure 14 ST in open load condition Data Sheet 19 Rev.1.0, 2008-04-29 BTS4175SGA Diagnostic Mechanism 7.2.2 ST Signal in case of Over Temperature In case of over temperature, the junction temperature reaches the thermal shutdown temperature TjSC. In that case, the ST signal is stable and remains to toggling between VST(L) and VST(H). Figure 15 gives a sketch of the situation. IN t V OUT ST t t T JSC Δ T JSC TJ t Diagnostic In Overload full toggling.vs Figure 15 . Sense signal in overtemperature condition Data Sheet 20 Rev.1.0, 2008-04-29 BTS4175SGA Diagnostic Mechanism 7.3 Electrical Characteristics Diagnostic Functions Electrical Characteristics: Diagnostics VS = 13.5 V, Tj = -40 °C to +150 °C, (unless otherwise specified) Typical values are given at Vs = 13.5V, Tj = 25°C Pos. Parameter Symbol Min. Load condition threshold for diagnostic 7.3.1 7.3.1 ST pin 7.3.2 7.3.3 Status output (open drain) High level; Zener limit voltage Status output (open drain) Low level Open Load detection threshold in OFF state1) Short circuit detection voltage Limit Values Typ. 3.0 2.8 6.1 – Max. 4.0 – – 0.6 V V V V Unit Conditions VOL(OFF) VOUT(SC) VST (HIGH) VST (LOW) – – 5.4 – VIN = 0V –3) IST = +1,6mA2), Zener Limit voltage IST =+1,6mA2) Diagnostic timing 7.3.4 7.3.5 Status invalid after positive input tdST(+) slope Status invalid after negative input slope – – 120 250 160 400 µs µs –3) – tdST(-) 1) External pull up resistor required for open load detection in OFF state 2) If ground resistor RGND is used, the voltage drop across this resistor has to be added 3) Not subject to production test, specified by design Data Sheet 21 Rev.1.0, 2008-04-29 BTS4175SGA Input Pin 8 8.1 Input Pin Input Circuitry The input circuitry is CMOS compatible. The concept of the Input pin is to react to voltage transition and not to voltage threshold. With the Schmidt trigger, it is impossible to have the device in an un-defined state, if the voltage on the input pin is slowly increasing or decreasing. The output is either OFF or ON but cannot be in an linear or undefined state. The input circuitry is compatible with PWM applications. Figure 16 shows the electrical equivalent input circuitry. The pull down current source ensures the channel is OFF with a floating input. RI II ESD Input circuitry.vsd IN To driver’s logic Figure 16 Input pin circuitry 8.2 Electrical Characteristics Electrical Characteristics: Diagnostics VS = 13.5 V, Tj = -40 °C to +150 °C, Typical values are given at Vs = 13.5V, Tj = 25°C Pos. Parameter Symbol Min. INput pins characteristics 8.2.1 8.2.2 8.2.3 8.2.4 8.2.5 8.2.6 Low level input voltage High level input voltage Input voltage hysteresis Low level input current High level input current Input resistance Limit Values Typ. – – 0.4 – – 3.5 Max. 0.8 – – 25 25 5 V V V µA µA kΩ –1) –1) –2) Unit Conditions VIN(L) VIN(H) VIN(HYS) IIN(L) IIN(H) RI – 2.2 – 1 3 2 VIN= 0,7V VIN= 5V See Figure 16 1) If ground resistor RGND is used, the voltage drop across this resistor has to be added 2) Not subject to production test, specified by design Data Sheet 22 Rev.1.0, 2008-04-29 BTS4175SGA Application Information 9 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. VDD RPUST Vdd OUT Microcontroller (e.g. XC22xx) IN RST GND GND R GND Application example single avec diag.vsd VDD VBAT VBAT_SW Vs IN OUT ROL R IN ST IS Figure 17 Application diagram with BTS4175SGA Note: This is a very simplified example of an application circuit. The function must be verified in the real application. 9.1 • Further Application Information For further information you may visit http://www.infineon.com/ Data Sheet 23 Rev.1.0, 2008-04-29 BTS4175SGA Package Outlines 10 Package Outlines 0.33 ±0.08 x 45˚ 1.75 MAX. 0.1 MIN. (1.5) 4 -0.21) 8˚ MAX. +0.05 -0.01 1.27 0.41 +0.1 -0.05 8 5 0.1 C 6 ±0.2 0.64 ±0.25 0.2 M A C x8 Index Marking 1 4 5 -0.21) 1) A Index Marking (Chamfer) Does not include plastic or metal protrusion of 0.15 max. per side Figure 18 PG-DSO-8-24 (Plastic Dual Small Outline Package) Green Product (RoHS compliant) To meet the world-wide customer requirements for environmentally friendly products and to be compliant with government regulations the device is available as a green product. Green products are RoHS-Compliant (i.e Pbfree finish on leads and suitable for Pb-free soldering according to IPC/JEDEC J-STD-020). Data Sheet 24 0.2 Rev.1.0, 2008-04-29 BTS4175SGA Revision History 11 Version 1.0 Revision History Date 2008-03-12 Changes Creation of the data sheet Data Sheet 25 Rev.1.0, 2008-04-29 Edition 2008-04-29 Published by Infineon Technologies AG 81726 Munich, Germany © 2008 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. With respect to any examples or hints given herein, any typical values stated herein and/or any information regarding the application of the device, Infineon Technologies hereby disclaims any and all warranties and liabilities of any kind, including without limitation, warranties of non-infringement of intellectual property rights of any third party. Information For further information on technology, delivery terms and conditions and prices, please contact the nearest Infineon Technologies Office (www.infineon.com). Warnings Due to technical requirements, components may contain dangerous substances. For information on the types in question, please contact the nearest Infineon Technologies Office. Infineon Technologies components may be used in life-support devices or systems only with the express written approval of Infineon Technologies, if a failure of such components can reasonably be expected to cause the failure of that life-support device or system or to affect the safety or effectiveness of that device or system. Life support devices or systems are intended to be implanted in the human body or to support and/or maintain and sustain and/or protect human life. If they fail, it is reasonable to assume that the health of the user or other persons may be endangered.