Datasheet

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PROFET

BTS 443 P

Data Sheet Page 1 of 15 Rev. 1.0, 2007-02

Smart Highside Power Switch

Reversave

•

Reverse battery protection by self turn on of

power MOSFET

Features

•

Short circuit protection

•

Current limitation

•

Overload protection

•

Thermal shutdown

•

Overvoltage protection (including load dump)

•

Loss of ground protection

•

Loss of V

protection (with external diode for

charged inductive loads)

•

Very low standby current

•

Fast demagnetisation of inductive loads

•

Electrostatic discharge (ESD) protection

•

Optimized static electromagnetic compatibility (EMC)

•

Green product (RoHS compliant)

•

AEC qualified

Diagnostic Function

•

Proportional load current sense (with defined fault signal during thermal shutdown)

Application

•

Power switch with current sense diagnostic feedback for 12V and 24 V DC grounded loads

•

All types of resistive, capacitive and inductive loads (no PWM with inductive loads)

•

Replaces electromechanical relays, fuses and discrete circuits

General Description

N channel vertical power FET with charge pump, current controlled input and diagnostic feedback with load

current sense, integrated in Smart SIPMOS



chip on chip technology. Providing embedded protective functions.

Charge pump

Level shifter

Rectifier

Limit for

unclamped

ind. loads

Gate

protection

Current

limit

Overvoltage

protection

+ V

PROFET



OUT

3 & Tab

1, 5

Load GND

Load

Output

Voltage

detection

ic GND

Voltage

sensor

Voltage

source

Current

Sense

Logic

ESD

Temperature

sensor

Product Summary

Operating voltage

bb(on)

5.0 ... 36 V

On-state resistance R

mΩ

Load current (ISO) I

L(ISO)

25 A

Current limitation

L(SCr)

65 A

Package

PG-TO252-5-11

Summary of content (15 pages)

PAGE 1
PROFET® BTS 443 P Smart Highside Power Switch Reversave Product Summary Operating voltage On-state resistance Load current (ISO) Current limitation Package • Reverse battery protection by self turn on of power MOSFET Features Vbb(on) 5.0 ...
PAGE 2
PROFET® BTS 443 P Pin Symbol 1 OUT Function O Output to the load. The pin 1 and 5 must be shorted with each other especially in high current applications!*) 2 IN I Input, activates the power switch in case of short to ground Tab/(3) Vbb + Positive power supply voltage, the tab is shorted to this pin. 4 IS S Diagnostic feedback providing a sense current proportional to the load current; high current on failure (see Truth Table on page 6) 5 OUT O Output to the load.
PAGE 3
PROFET® BTS 443 P Thermal Characteristics Parameter and Conditions Thermal resistance Symbol chip - case: RthJC3) junction - ambient (free air): RthJA SMD version, device on PCB4): min ---- Values typ max -1.5 80 -45 -- Unit K/W Electrical Characteristics Parameter and Conditions Symbol at Tj= -40°C...
PAGE 4
PROFET® BTS 443 P Parameter and Conditions Symbol Values min typ max Vbb(on) VbIN(u) Vbb(ucp) 5.0 1.5 3.0 -3.0 4.5 36 4.5 6.0 V V V VZ,IN 61 68 -- V Tj=-40...+25°C: Ibb(off) Tj=150°C: --- 2 4 5 8 µA 75 65 65 65 110 110 125 -- A IL(SCr) 35 35 35 -- VON(CL) 38 42 48 V Tjt ∆Tjt 150 -- -10 --- °C K -Vbb -- -- 20 V --- -16 25 22 19 32 mΩ -- 200 -- Ω at Tj= -40°C...
PAGE 5
PROFET® BTS 443 P Diagnostic Characteristics Current sense ratio, static on-condition kILIS = IL : IIS VON<1.5 V, VIS4.5 V 9) kILIS IL = 20A, Tj = -40°C: Tj = +25°C: Tj = +150°C: IL = 5A, Tj = -40°C: Tj = +25°C: Tj = +150°C: IL = 2.5A, Tj = -40°C: Tj = +25°C: Tj = +150°C: IL = 1A, Tj = -40°C: Tj = +25°C: Tj = +150°C: IIN = 0 (e.g. during de-energising of inductive loads): Sense current under fault conditions; VDS>1.5V, typ. Tj= -40...
PAGE 6
PROFET® BTS 443 P Truth Table Input Current level L H L H L H L H L H L H Normal operation Overload Short circuit to GND Overtemperature Short circuit to Vbb Open load L = "Low" Level H = "High" Level Output level L H L H L L L L H H Z H Current Sense IIS 0 nominal 0 IISfault 0 IISfault 0 IISfault 0
PAGE 7
PROFET® BTS 443 P Inductive and overvoltage output clamp Input circuit (ESD protection) + Vbb V bb V R bb ZD V VZ1 ON Z,IN V bIN OUT IN I PROFET IN VON is clamped to VON(Cl) = 42 V typ. V IN ESD-Zener diode: 68 V typ., max 15 mA; Overvoltage protection of logic part Current sense output Normal operation Vbb Rbb + Vbb ZD V R IN IS IIS V R IN Logic IS R Vbb − 5V . I L ( M ) / K ilis V OUT PROFET IS IS VZ,IS = 68 V (typ.
PAGE 8
PROFET® BTS 443 P Reversave (Reverse battery protection) Version b: -Vbb V R bb Vbb bb IN OUT R IN IS Power Transistor Logic OUT PROFET IN VZb IS RL D R IS Note that there is no reverse battery protection when using a diode without additional Z-diode VZL, VZb. RV Signal Power RV≥1kΩ, R IS = 1 kΩ nominal. Add RIN for reverse battery protection in applications with Vbb above 16V; 0.
PAGE 9
PROFET® BTS 443 P Maximum allowable load inductance for a single switch off Inductive load switch-off energy dissipation L = f (IL ); Tj,start = 150°C, Vbb = 12 V, RL = 0 Ω E bb E AS V L[mH] ELoad 100 bb i L(t) V bb IN PROFET OUT IS I IN ZL RIS EL L { 10 ER RL 1 Energy stored in load inductance: 2 EL = 1/2·L·I L While demagnetising load inductance, the energy dissipated in PROFET is 0.
PAGE 10
PROFET® BTS 443 P Timing diagrams Figure 1a: Switching a resistive load, change of load current in on-condition: Figure 2a: Switching motors and lamps: IIN IIN VOUT dV/dtoff 90% t on VOUT dV/dton t off 10% IL tslc(IS) Load 1 IIS t slc(IS) IIL Load 2 IIS tson(IS) t t soff(IS) The sense signal is not valid during a settling time after turn-on/off and after change of load current. t Sense current above IIS,fault can occur at very high inrush currents.
PAGE 11
PROFET® BTS 443 P Figure 3a: Short circuit: Figure 5a: Undervoltage restart of charge pump, overvoltage clamp IN VOUT 12 10 I VIN = 0 L 8 I V L(SCp) I 6 L(SCr) 4 IIS ON(CL) dynamic, short Undervoltage not below VbIN(u) IIN = 0 2 IISfault t VON(CL) 0 0 V bIN(u) 2 4 V6bIN(ucp)8 10 V12 bb Figure 4a: Overtemperature Reset if Tj
PAGE 12
PROFET® BTS 443 P Figure 7a: Output voltage drop versus load current: Figure 6a: Current sense versus load current: [mA] I IS VON [V] 0.1 R 2.0 ON V ON(NL) 0.05 1.0 IL 0 0 5 10 15 20 [A] IL 0.0 0 1 2 3 4 5 6 7 [A] 8 Figure 6b: Current sense ratio12 : ) kILIS 8200 [A] I L 0 0 12 ) 2.5 5 10 20 This range for the current sense ratio refers to all devices. The accuracy of the kILIS can be raised by means of calibration the value of kILIS for every single device.
PAGE 13
PROFET® BTS 443 P Package Outlines All dimensions in mm D-Pak-5 Pin: PG-TO252-5-11 Sales Code BTS 443P Green Product 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 Page 13 of 15 Rev. 1.
PAGE 14
PROFET® BTS 443 P Revision History Version Date Changes Rev. 1.0 2007-02-21 RoHS-compliant version of BTS443P Page 1, page 13: RoHS compliance statement and Green product feature added Page 1, page 13: Change to RoHS compliant package PG-TO252-5-11 Legal disclaimer updated Data Sheet Page 14 of 15 Rev. 1.
PAGE 15
Edition 2007-02 Published by Infineon Technologies AG 81726 Munich, Germany © Infineon Technologies AG 2007. All Rights Reserved. Legal Disclaimer The information given in this document shall in no event be regarded as a guarantee of conditions or characteristics (“Beschaffenheitsgarantie”).