BTS4175SGA Smart High-Side Power Switch Automotive Power

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BTS4175SGA Smart High-Side Power Switch Automotive Power

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Data Sheet, Rev.1.0, April 2008
BTS4175SGA
Smart High-Side Power Switch
Automotive Power
BTS4175SGA
7.2.1 7.2.2
Overview Block Diagram Configuration Assignment Definitions Functions Voltage Current Definition General Product Characteristics Absolute Maximum Ratings Functional Range Thermal Resistance Power Stage Output ON-State Resistance Turn Characteristics Inductive Output Clamp Electrical Characteristics Power Stage Protection Mechanisms Loss Ground Protection Undervoltage Protection Overvoltage Protection Reverse Polarity Protection Overload Protection Electrical Characteristics Protection Functions Diagnostic Mechanism Signal Case Failures Diagnostic Open Load, Channel Signal case Over Temperature Electrical Characteristics Diagnostic Functions Input Input Circuitry Electrical Characteristics Application Information Further Application Information Package Outlines Revision History
Data Sheet
Rev.1.0, 2008-04-29
Smart High-Side Power Switch
BTS4175SGA
Overview
application Channel device Very Stand-by Current CMOS Compatible Inputs Electrostatic Discharge Protection (ESD) Optimized Electromagnetic Compatibility Logic ground independent from load ground Very Leakage Current from load state Green Product (RoHS compliant) Qualified
Basic Features
PG-DSO-8-24
Description BTS4175SGA single channel Smart High-Side Power Switch. embedded PG-DSO-8-24 package, providing protective functions diagnostics. power transistor built N-channel power MOSFET with charge pump. device monolithically integrated Smart technology. specially designed drive Relay, lamp harsh automotive environment. Table Parameter Operating voltage range Over voltage protection Maximum State resistance 150°C Nominal load current Minimum current limitation Standby current whole device with load Maximum reverse battery voltage Diagnostic Feature Open load Feedback thermal shutdown state Feedback current limitation Diagnostic feedback with open drain output Electrical Parameters (short form) Symbol Value 350m 1.3A 18µA
VSOP (AZ) RDS(ON) (nom) IL_SCR IS(off) -Vs(REV)
Type BTS4175SGA Data Sheet
Package PG-DSO-8-24
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 ground loss battery protection Electrostatic discharge protection (ESD)
Application types relays, lamps resistive loads
Data Sheet
Rev.1.0, 2008-04-29
BTS4175SGA
Block Diagram
Block Diagram
internal power supply voltage sensor over temperature gate control charge pump clamp inductive load over current switch
protection
driver logic
open load detection
Block diagram .emf
Figure
Block diagram BTS4175SGA
Data Sheet
Rev.1.0, 2008-04-29
BTS4175SGA
Configuration
Configuration
Assignment
Figure
Configuration
Definitions Functions
Symbol Function Ground; Ground connection Input channel; Input signal. Activate channel case logic high level Output; Protected High side power output channel Diagnostic feedback; channel. Open drain. Battery voltage; Design wiring simultaneous max. short circuit current also thermal resistance
Data Sheet
Rev.1.0, 2008-04-29
BTS4175SGA
Configuration
Voltage Current Definition
Figure shows terms used this data sheet, with associated convention positive values.
Voltage current convention single avec diag.vsd
Figure
Voltage current definition
Data Sheet
Rev.1.0, 2008-04-29
BTS4175SGA
General Product Characteristics
General Product Characteristics
Absolute Maximum Ratings
Absolute Maximum Ratings
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. Unit Conditions
VS(REV)
Supply voltage short circuit protection Vbat(SC)
RECU 20m, RCable=16m/m, LCable=1µH/m,
Input pins 4.1.4 4.1.5 4.1.6 4.1.7 4.1.8 Voltage INPUT pins Current through INPUT pins Load current Power dissipation (DC), Inductive load switch energy dissipation, Single pulse
Chapter
IL(LIM)
Power stage
PTOT
TA=85°C, <150°C Tj=150°C, VS=13.5V,
Currents Temperatures 4.1.9 4.1.10 4.1.11 4.1.12 Junction Temperature Storage Temperature Resistivity Resistivity other pins
Tstg VESD VESD
HBM3) HBM3)
Susceptibility
subject production test, specified design accordance Q100-012 Q101-006 susceptibility according EIA/JESD 22-A 114B
Note: Stresses above ones listed here cause permanent damage device. Exposure absolute maximum rating conditions extended periods affect device reliability. Note: Integrated protection functions designed prevent destruction under fault conditions described data sheet. Fault conditions considered "outside" normal operating range. Protection functions designed continuous repetitive operation.
Data Sheet
Rev.1.0, 2008-04-29
BTS4175SGA
General Product Characteristics
Pos. 4.2.1
Functional Range
Parameter Operating Voltage Symbol Min. Limit Values Max. Unit Conditions
VSOP
4.5V, 0.5V
4.2.2 4.2.3 4.2.4
Undervoltage shutdown Operating current Standby current whole device with load
VSUV IGND IS(OFF)
<85°C 150°C,
Note: Within functional range operates described circuit description. electrical characteristics specified within conditions given related electrical characteristics table.
Pos. 4.3.1 4.3.2
Thermal Resistance
Parameter Junction Soldering Point Junction Ambient: Channel active Symbol Min. Limit Values Typ. Max. with cooling area1) Unit Conditions
RthJS RthJA
subject production test, specified design
Data Sheet
Rev.1.0, 2008-04-29
BTS4175SGA
Power Stage
Power Stage
Output ON-State Resistance
power stage built N-channel vertical power MOSFET (DMOS) with charge pump.
ON-state resistance RDS(ON) depends supply voltage well junction temperature Figure shows dependencies typical ON-state resistance. behavior reverse polarity described Chapter 6.4.
1000
Rdson
Rdson
Battery voltage
Junction perature (°C)
Rdson.vsd
Figure
Typical ON-state resistance
high signal (See Chapter input causes power DMOS switch with dedicated slope, which optimized terms emission.
Turn Characteristics
Figure shows typical timing when switching resistive load.
IN_H_min VIN_L_max
dV/dt
dV/dt
Switching times.vsd
Figure
Turn ON/OFF (resistive) timing
Data Sheet
Rev.1.0, 2008-04-29
BTS4175SGA
Power Stage
Inductive Output Clamp
When switching inductive loads with high side switches, voltage VOUT drops below ground potential, because inductance intends continue driving current. prevent destruction device high voltages, there voltage clamp mechanism implemented that keeps negative output voltage certain level (VS-VDS(AZ)). Please refers Figure Figure details. Nevertheless, maximum allowed load inductance limited.
LOGIC
VOUT
Output clamp.vsd
Figure
Output clamp
VOUT VS-VDS(AZ) tpeak
Switching inductance.vsd
Figure
Switching inductance timing
Maximum Load inductance During demagnetization inductive loads, energy dissipated BTS4175SGA. This energy calculated with following equation:
Following equation simplifies under assumption Data Sheet Rev.1.0, 2008-04-29
BTS4175SGA
Power Stage
energy, which converted into heat, limited thermal design component. Figure maximum allowed energy dissipation.
1800 1600 1400 1200 EAS(mJ) 1000 Load current
EAS.vsd
Figure
Maximum energy dissipation single pulse, Tj,Start 13.5V
Data Sheet
Rev.1.0, 2008-04-29
BTS4175SGA
Power Stage
Electrical Characteristics Power Stage
Electrical Characteristics: Power stage
13.5 +150 °C,(unless otherwise specified). Typical values given 25°C
Pos. 5.4.1 Parameter ON-state resistance channel Symbol Min. Limit Values Typ. Max. Tj=25°C1), Unit Conditions
RDS(ON)
VIN=
Figure 5.4.2 5.4.3 5.4.4 5.4.5 5.4.6 5.4.7 5.4.8 5.4.9 Nominal load current Drain Source clamping Voltage V/µs V/µs Tj=150°C
IL(nom) VDS(AZ) IL(OFF) dV/dtON
-dV/dtOFF
VDS(AZ) VS-VOUT
Output leakage current Slew rate VOUT Slew rate VOUT Turn-ON time Includes propagation delay Turn-OFF time Includes propagation delay Internal output pull down
TA=85°C1), <150°C1) 4mA2) VIN=0V RL=47, Vs=13.5V
Figure
tOFF
VOUT(OL)
subject production test, specified design Voltage measured forcing IDS.
Data Sheet
Rev.1.0, 2008-04-29
BTS4175SGA
Protection Mechanisms
Protection Mechanisms
device provides embedded protective functions. Integrated protection functions designed prevent destruction from fault conditions described data sheet. Fault conditions considered "outside" normal operating range. Protection functions designed neither continuous repetitive operation.
Loss Ground Protection
case loss module ground, where load remains connected ground, device protects itself automatically turning (when previously remains OFF, regardless voltage applied pin. that case, maximum I(OUTGND) flow output.
Undervoltage Protection
Below VSOP_min, under voltage mechanism met. supply voltage below under voltage mechanism, device (turns OFF). soon supply voltage above under voltage mechanism, then device switched protection functions operational.
Overvoltage Protection
There clamp mechanism over voltage protection. guarantee this mechanism operates properly application, current zener diode ZDAZ limited ground resistor. Figure shows typical application withstand overvoltage issues. case supply greater than VS(AZ), power transistor switches voltage across logic section clamped. result, internal ground potential rises VS(AZ). zener diodes, potential rises almost that potential, depending impedance connected circuitry. Integrated resistors provided protect input circuitry from excessive current flow during this condition.
VBAT LOGIC
Overvoltage protection single with diag.vsd
Figure
Over voltage protection with external components
Data Sheet
Rev.1.0, 2008-04-29
BTS4175SGA
Protection Mechanisms case supply voltage between VS(SC) VDS(AZ), output transistor still operational follow input. channel state, parameters longer warranted lifetime reduced compared normal mode. This specially impacts short circuit robustness, well maximum energy device handle.
Reverse Polarity Protection
case reverse polarity, intrinsic body diode causes power dissipation. current this intrinsic body diode limited load itself. Additionally, current into ground path logical pins limited maximum current described Chapter 4.1, sometimes with external resistor. Figure shows typical application. RGND resistor used limit current zener protection device. Resistors used limit current logic device protection stage. recommended value RGND 150, 0/1= 15k. case over voltage considered application, RGND replaced Shottky diode.
VccµC
Micro controller (e.g. XC22xx)
RSTPU
Zdbody
VBAT -VDS(REV)
ZDESD
L(nom)
RGND
Reverse Polarity single with diag.vsd
Figure
Reverse polarity protection with external components
Overload Protection
case overload, short circuit ground, BTS4175SGA offers protections mechanisms. Current limitation first step, instantaneous power switch maintained safe level limiting current maximum current allowed switch IL(LIM). During this time, DMOS temperature increasing, which affects current flowing DMOS. Thermal protection thermal shutdown, device turns cools down. restart mechanism used, after cooling down, device restarts limits current IL(SCR). Figure shows behavior current limitation function time.
Data Sheet
Rev.1.0, 2008-04-29
BTS4175SGA
Protection Mechanisms
IL(LIM)
IL(SCr)
TdST(+)
Current limitation with diag full
Figure
Current limitation function time
Data Sheet
Rev.1.0, 2008-04-29
BTS4175SGA
Protection Mechanisms
Electrical Characteristics Protection Functions
Electrical Characteristics: Protection
13.5 +150 Typical values given 25°C
Pos. Parameter Symbol Min. Reverse polarity 6.6.1 Drain source diode voltage during reverse polarity Over voltage protection -VDS(REV) Limit Values Typ. Max. Unit Conditions
150°C VOUT -40°C, 25°C, 150°C 40V1), 40V1)
Overvoltage 6.6.2 6.6.3
VS(AZ)
Overload condition Initial peak short circuit current limit IL(LIM) (pin 20V; 150µs Repetitive short circuit current limitation Thermal shutdown temperature Thermal shutdown hysteresis
6.6.4 6.6.5 6.6.6
IL(SCR) TjSC
subject production test, specified design
Data Sheet
Rev.1.0, 2008-04-29
BTS4175SGA
Diagnostic Mechanism
Diagnostic Mechanism
diagnosis purpose, BTS4175SGA provides status pin.
BTS4175SGA status open drain, active circuit. Figure shows equivalent circuitry. long "hard" failure mode occurs (Short circuit Over temperature open load OFF), signal permanently high, required external pull-up logic voltage will exhibit logic high application. suggested value 15k.
VccµC
Channel Diagnostic Logic
full diag.vsd
Figure
Status output circuitry
Table
Signal Case Failures
truth table V(OL)
Table gives quick reference logical state during device operation. Device operation Normal operation Open Load channel Over temp channel
potential output exceeds Openload detection voltage
7.2.1
Diagnostic Open Load, Channel
open load diagnosis OFF-state, external output pull-up resistor (ROL) recommended. calculation pull-up resistor value, leakage currents open load threshold voltage VOL(OFF) taken into account. Figure gives sketch situation Figure shows typical timing diagram.
Ileakage defines leakage current complete system, including IL(OFF) (see Chapter 5.4) external
leakages humidity, corrosion, etc. application. reduce stand-by current system, open load resistor switch recommended.
Data Sheet
Rev.1.0, 2008-04-29
BTS4175SGA
Diagnostic Mechanism channel OFF, output longer pulled down load VOUT voltage rises nearly This recognized device open load. voltage threshold given VOL(OFF). that case, signal switched logical VSTL.
Vbat
BTS4175SGA
comp.
LOFF
Ileakage VOL(OFF
RGND
Rleakage
Open Load .vsd
Figure
Open load detection electrical equivalent circuit
VOL(OFF)
ST(HIGH) VST(LOW)
Diagnostic Open load full diag.vs
Figure
open load condition
Data Sheet
Rev.1.0, 2008-04-29
BTS4175SGA
Diagnostic Mechanism
7.2.2
Signal case Over Temperature
case over temperature, junction temperature reaches thermal shutdown temperature TjSC. that case, signal stable remains toggling between VST(L) VST(H). Figure gives sketch situation.
Diagnostic Overload full toggling.vs
Figure
Sense signal overtemperature condition
Data Sheet
Rev.1.0, 2008-04-29
BTS4175SGA
Diagnostic Mechanism
Electrical Characteristics Diagnostic Functions
Electrical Characteristics: Diagnostics
13.5 +150 (unless otherwise specified) Typical values given 13.5V, 25°C
Pos. Parameter Symbol Min. Load condition threshold diagnostic 7.3.1 7.3.1 7.3.2 7.3.3 Status output (open drain) High level; Zener limit voltage Status output (open drain) level Open Load detection threshold state1) Short circuit detection voltage Limit Values Typ. Max. Unit Conditions
VOL(OFF) VOUT(SC) (HIGH) (LOW)
+1,6mA2),
Zener Limit voltage
=+1,6mA2)
Diagnostic timing 7.3.4 7.3.5 Status invalid after positive input tdST(+) slope Status invalid after negative input slope
tdST(-)
External pull resistor required open load detection state ground resistor RGND used, voltage drop across this resistor added subject production test, specified design
Data Sheet
Rev.1.0, 2008-04-29
BTS4175SGA
Input
Input
Input Circuitry
input circuitry CMOS compatible. concept Input react voltage transition voltage threshold. With Schmidt trigger, impossible have device un-defined state, voltage input slowly increasing decreasing. output either cannot linear undefined state. input circuitry compatible with applications. Figure shows electrical equivalent input circuitry. pull down current source ensures channel with floating input.
Input circuitry.vsd
driver's logic
Figure
Input circuitry
Electrical Characteristics
Electrical Characteristics: Diagnostics
13.5 +150 Typical values given 13.5V, 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 level input voltage High level input voltage Input voltage hysteresis level input current High level input current Input resistance Limit Values Typ. Max. Unit Conditions
VIN(L) VIN(H) VIN(HYS) IIN(L) IIN(H)
VIN= 0,7V VIN=
Figure
ground resistor RGND used, voltage drop across this resistor added subject production test, specified design
Data Sheet
Rev.1.0, 2008-04-29
BTS4175SGA
Application Information
Application Information
Note: following information given hint implementation device only shall regarded description warranty certain functionality, condition quality device.
RPUST Microcontroller (e.g. XC22xx)
Application example single avec diag.vsd
VBAT VBAT_SW
Figure
Application diagram with BTS4175SGA
Note: This very simplified example application circuit. function must verified real application.
Further Application Information
further information visit http://www.infineon.com/
Data Sheet
Rev.1.0, 2008-04-29
BTS4175SGA
Package Outlines
Package Outlines
0.33 ±0.08
1.75 MAX. MIN. (1.5)
-0.21)
MAX.
+0.05 -0.01
1.27 0.41 +0.1 -0.05
±0.2
0.64 ±0.25
Index Marking
-0.21)
Index Marking (Chamfer) Does include plastic metal protrusion 0.15 max. side
Figure PG-DSO-8-24 (Plastic Dual Small Outline Package)
Green Product (RoHS compliant) meet world-wide customer requirements environmentally friendly products compliant with government regulations device available green product. Green products RoHS-Compliant (i.e Pbfree finish leads suitable Pb-free soldering according IPC/JEDEC J-STD-020).
Data Sheet
Rev.1.0, 2008-04-29
BTS4175SGA
Revision History
Version
Revision History
Date 2008-03-12 Changes Creation data sheet
Data Sheet
Rev.1.0, 2008-04-29
Edition 2008-04-29 Published Infineon Technologies 81726 Munich, Germany 2008 Infineon Technologies Rights Reserved. Legal Disclaimer information given this document shall event regarded guarantee conditions characteristics. With respect examples hints given herein, typical values stated herein and/or information regarding application device, Infineon Technologies hereby disclaims warranties liabilities kind, including without limitation, warranties non-infringement intellectual property rights third party. Information further information technology, delivery terms conditions prices, please contact nearest Infineon Technologies Office (www.infineon.com). Warnings technical requirements, components contain dangerous substances. information types question, please contact nearest Infineon Technologies Office. Infineon Technologies components used life-support devices systems only with express written approval Infineon Technologies, failure such components reasonably expected cause failure that life-support device system affect safety effectiveness that device system. Life support devices systems intended implanted human body support and/or maintain sustain and/or protect human life. they fail, reasonable assume that health user other persons endangered.

BTS4175SGA Smart High-Side Power Switch Automotive Power

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