Infineon PROFET+2 12V Arduino Shield User manual

PROFET™+2 12V Arduino Shield
BTS7002-1EPP, BTS7004-1EPP, BTS7006-1EPP, BTS7008-1EPP
About this document
Scope and purpose
This document provides a quick introduction to the PROFET™+2 12V Arduino Shield. The Shield can be used to
control and protect outputs of a 12 V supply, turn ON/OFF loads (e.g. bulbs, heating resistors, motor drives),
measure the load current and detect no-load condition. The PROFET™+2 12V family targets high current
automotive applications (e.g. ECU power feeds, auxiliary power outlets, heaters).
Intended audience
Customers requiring a user manual to the PROFET™+2 12V Arduino Shield.
Table of contents
About this document . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Table of contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.2 Key features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.3 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2 Board description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.1 Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.2 PCB layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
2.3 Pin assignment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
2.4 Pin definitions and functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.5 Additional information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
2.5.1 Open Load in OFF Detection (OLOFF) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.5.2 Diagnosis and Sense (DEN and IS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.5.3 Battery voltage monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.5.4 Supply options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.5.5 Push button (S1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
2.5.6 Free wheeling diode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
2.6 Bill of materials (BOM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3 Appendix . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Disclaimer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
User Manual Please read the Important Notice and Warnings at the end of this document Rev. 1.00
www.infineon.com 2019-10-23

1 Introduction
1.1 Overview
The PROFET™+2 Arduino Shield with BTS700x-1EPP adds advanced driving and diagnostic of generic loads to
the Arduino projects. The shield can be controlled with general logic IO-Ports of a microcontroller. Either an
Arduino Uno R3, the Arduino Due, the XMC™1100 Boot Kit or the more powerful XMC™4700 Relax Kit and
XMC™4800 Relax Kit from Infineon can be used as the master.
The board is available in dierent variations of the Smart High-Side Power Switch, depending on which of
Infineon's products the user wants to employ. Each one is built by a vertical N-channel power MOSFET with
charge pump. Due to the integrated charge pump the channels can be controlled by standard digital IOs (3.3 V
and 5 V supported). All of them are single channel devices with a very small ON-state resistance (e.g. the
BTS7002-1EPP with one 2.6 mΩ channel). The board can be bought with the following components:
• BTS7002-1EPP (Nominal load current: 21 A)
• BTS7004-1EPP (Nominal load current: 15 A)
• BTS7006-1EPP (Nominal load current: 12.5 A)
• BTS7008-1EPP (Nominal load current: 11 A)
The PROFET™+2 Arduino Shield can easily be connected to any Arduino compatible board like the XMC™1100
Boot Kit via headers.
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Figure 1 PROFET™+2 Arduino Shield
1.2 Key features
The PROFET™+2 Arduino Shield has the following features:
• Either an Arduino Uno R3, or an Arduino Due, or an XMC™ 1100 Boot Kit, or another similar board, connected
to the shield, can control the four power channels via the general IO pins
• Drives resistive, capacitive and inductive loads with PWM or in DC (e.g. car bulbs, valves, motor relays,
capacitors, LEDs...)
- Infineon PROFET™ devices have an integrated charge pump, internal protection features and a current
feedback to the ADC of the microcontroller
- Supply voltage: functional range: 4.1 V - 28 V; nominal range: 3.1 V - 35 V
- Nominal current between 11 A per channel (BTS7008-1EPP) and 21 A (BTS7002-1EPP) per channel
restricted due to the limited power dissipation of the PCB and the used PROFET™
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- PWM (Pulse Width Modulation) via input pins up to 400 Hz: higher frequencies are possible depending
on load input voltage and duty cycle
- A GND measuring bracket serves as an interface to attach GND terminals of measuring equipment
(Oscilloscope-probe). And also for other signals there are test points (TP) to connect oscilloscope
probes
• Diagnosis of the load/current feedback
- Accurate feedback from the status of the load to the ADC of the microcontroller (current measurement
and fault detection)
- Open load detection in output state OFF for all four PROFET™ switches
- Battery voltage monitoring via µC analogue pin and voltage divider
• Protection of load and driver circuit
- Protection against overcurrent on the load side via diagnosis feedback
- Absolute and dynamic temperature limitation with controlled reactivation
- Overcurrent protection on the driver side with intelligent latch
- Fault detection via IS pin
- Protection against high transient voltages (ESD, ISO pulses)
- Low conducted emission
- Undervoltage protection
•Soware
- Demo-code available on GitHub (https://github.com/Infineon) -> PROFET™+2 12V
1.3 Block diagram
The Figure 2 below depicts the block diagram of the PROFET™+2 Arduino Shield. The DEN pin of the devices
U1+U3 and U2+U4 have been connected and this is illustrated within the block diagram by the green lines. The
IS pin is routed once to GND via the RISx and once to µC via the RSENSEx. The IS pin of U1+U2 and the U3+U4
was connected and this is shown by the orange lines. Therefore it is only possible to use U1+U3 or U2+U4 at the
same time to get a correct feedback at the IS pin. For more detailed explanations, see the schematic at the end
of the user manual in the appendix.
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Power Supply
(e.g. PC-USB)
VBAT
CVS D1
RIS1
RIS3
XMC1000
Boot Kit
XMC4700
Relax Kit
XMC4800
Relax Kit
Aurix TC275
GPIO
GPIO
GPIO
GPIO
GPIO
GPIO
ADC
ADC
RSENSEX
RSENSEX
RINX
RDENX
RGNDX
BTS700x-1EPP
VS
IN
DEN
IS
OUT
GND
RPDX
COUTX
CVSX
RINX
RDENX
RGNDX
BTS700x-1EPP
VS
IN
DEN
IS
OUT
GND
RPDX
COUTX
CVSX
RINX
RDENX
RGNDX
BTS700x-1EPP
VS
IN
DEN
IS
OUT
GND
RPDX
COUTX
CVSX
U1
U2
RINX
RDENX
RGNDX
BTS700x-1EPP
VS
IN
DEN
IS
OUT
GND
RPDX
COUTX
CVSX
U3
U4
Figure 2 Block diagram
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2 Board description
For a safe and suicient functionality, discrete components are necessary: please refer to the datasheet to
check which components are needed. The next Figure 3, Figure 4 and Figure 5 show the schematics plus the
corresponding layout of the PROFET™+2 Arduino Shield and the bill of materials (BOM). In the Appendix of the
user manual are attached the schematics and the PCB layout.
2.1 Schematics
In the following Figure 3 the schematics of the PROFET™+2 Arduino Shield are shown. The schematics are based
on the application circuit in the BTS700x-1EPP datasheets.
Figure 3 Schematics PROFET™+2 Arduino Shield
2.2 PCB layout
The nextFigure 4 and Figure 5 show the PCB layout of the PROFET™+2 Arduino Shield devided into top and
bottom layers.
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Figure 4 PROFET™+2 Arduino Shield - Top layer
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Figure 5 PROFET™+2 Arduino Shield - Bottom layer
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2.3 Pin assignment
To use the PROFET™+2 Arduino Shield the necessary control signals can be applied directly at the connectors.
There is no need to use a microcontroller compatible with Arduino or XMC™ 1100 Boot Kit to get the PROFET™ +2
Arduino Shield into an application. The control pins are logic level inputs which can be driven by any other
microcontroller or with logic level signals. Besides the supply voltage Vbat has to be provided to the Vbat
connector. The Figure 6 below shows the pin-out and the connectors of the PROFET™+2 Arduino Shield.
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Figure 6 Pin-out and connectors
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2.4 Pin definitions and functions
Table 1 Pin definitions and functions
PIN Symbol I/O Function
D2 P1.4 I Push button digital (optional)
D3 IN4 O Input PROFET™+2 device U4
D4 LED1 O Indicator LED1
D5 LED2 O Indicator LED2
D6 DEN1+DEN3 O Diagnosis enable PROFET™+2 Device U1+U3
D7 OLOFF O Option for Open Load in OFF Detection
D8 DEN2+DEN4 O Diagnosis enable PROFET™+2 Device U2+U4
D9 IN1 O Input PROFET™+2 device U1
D10 IN2 O Input PROFET™+2 device U2
D11 IN3 O Input PROFET™+2 device U3
D12 LED3 O Indicator LED3
D13 LED4 O Indicator LED4
GND@2 GND - Ground
GND@1 GND - Ground
GND@0 GND - Ground
VIN VIN - Supply voltage
A0 A0 - P2.6 I Push button analog (optional)
A1 A1 - P2.8 I Vbat
A2 A2 - P2.9 I Current sense of PROFET™+2 device U1+U2
A3 A3 - P2.10 I Current sense of PROFET™+2 device U3+U4
2.5 Additional information
The following chapters give the user in-depth information about the board's special features.
2.5.1 Open Load in OFF Detection (OLOFF)
For some loads, it may be necessary to check their availability without powering them up. For example, it may
be necessary to check if bulbs or LEDS (or the cable they are connected to) are intact or broken, without
creating a flash light by switching them on.
In the example circuitry in Figure 7 below, a small current (few milliamperes) is injected into the output,
powerful enough to pull up the output if there is no load connected, but not powerful enough to activate the
load in a distrubing manner. If the output voltage of a PROFET™+2 12V becomes too high, drain-source voltage
will be lower than VDS(OLOFF), and the PROFET™ will provide an open load signal IIS(OLOFF), if DEN = "high" while IN
= "low".
To avoid continuous power losses in OFF state in open load condition, and to be able to distinguish open load
from short-to-battery in OFF state, the pull-up circuitry must be deactivated.
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Figure 7 Application diagram with open load detection circuitry
Open load in OFF soware flow principle:
• IN = low; DEN = high;
• activate pull-up(OLOFF = high);
• read IS(A2 - P2.9/A3 - P2.10) ;
• If IS = IIS(OLOFF)
• deactivate pull-up(OLOFF = low);
• read IS (A2 - P2.9/A3 - P2.10);
• If IS = IIS(OLOFF)
• short-to-battery detected;
• else open load detected;
• else
• if IS = IIS(fault)
• short-to-ground or overtemperature detected;
• else
• normal load condition detected;
• deactivate pull-up (OLOFF = low);
• end;
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The limits of the pull-up current reflect the maximum allowed load current, which does not activate the load.
That depends strongly on the load, and has to be adapted accordingly. As leakage currents battery-to-output
(for example, output leakage current IL(OFF)) and output-to-GND may occur in a system, resistors for pull-up
and pull-down may be needed.
For more information see our product datasheet of the PROFET™+2 BTS700x-1EPP and carefully read the
Application Notes "PROFET™+ 12V 'What the designer should know'" and "PROFET™+ current sense 'What the
designer should know'".
2.5.2 Diagnosis and Sense (DEN and IS)
The Diagnosis Enable (DENx) and the current sense (ISx) are conntected in a way, that you can only use 2
dierent BTS700x-1EPP at a time (U1+U3 or U2+U4).
For example, in order to use the U1 and the U3 devices, the user has to put the diagnosis enable signal DEN1 +
DEN3 high and ensure that DEN2 + DEN4 are at a low level. The user has also to check that the value at the
current sense pins is correct.
The current sense outputs of the devices U1 and U2 are connected by sharing one ADC input of the
microcontroller (analog input A2). The same applies to the devices U3 and U4 which are connected to the
analog input A3.
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Figure 8 Diagnosis and Sense (DENx and ISx)
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2.5.3 Battery voltage monitoring
The battery voltage can be measured with the board (voltage divider/analogue pin). The PROFET™+2
BTS700x-1EPP Arduino Shield provides the possibility to measure and monitor the Vbat voltage (Power Supply
Voltage Vs: max. = 28 V).
The voltage divider for Vbat monitoring ensures that the analog input pin of the microcontroller (e.g. XMC1100™)
doesn't get more than 5 V. Furthermore the zener diode D5 is protecting the Vbat input pin (A2) of the
microcontroller against overvoltage. The ADC (analog/digital converter) inputs can get damaged by signals
exceeding the input range specified in the electrical parameters. The inputs need to be protected all the time
(during powered up as well as powered down state) to avoid damaging the ADC. The TVS diode D1 is limiting
the power supply voltage for the PROFET™+2 devices and protect our PROFET™s from voltage transients.
Figure 9 Voltage divider for Vbat monitoring
2.5.4 Supply options
If jumper J1 is connected, the microcontroller board is powered by BAT+. Otherwise, the user has always to
connect the USB port to the microcontroller to supply the device. In case the user is employing the option of the
connected jumper J1, then it has to be ensured that the installed LDO (voltage regulator) on the used
microcontroller board (e.g. Arduino Uno, Aurix shield buddy, XMC™1100 boot kit, XMC™4700 Relax Kit ...) is able
to withstand a maximum of 28 V.
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Figure 10 PROFET™+2 Arduino Shield with position of jumper J1
2.5.5 Push button (S1)
The option to solder a SMD push button at the placeholder S1 is also available. Additionally, a resistor(RS1= 82
kOhm) and a capacitor (CS1 = 100 nF) are required to debounce the switch. Moreover, depending on the jumper
J2/J3 setting, the push button is available either on the digital input D2 (P1.4) or on the analog input A0 (P2.6).
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Figure 11 Push button positioning board
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Figure 12 Push button positioning schematic
2.5.6 Free wheeling diode
If the use of inductive loads is required, then it is possible to mount a free wheeling diode at the channel
outputs of the BTS700x-1EPP devices. The free wheeling diode eliminates flyback, which is the sudden voltage
spike seen across an inductive load when its supply current is suddenly reduced or interrupted.
The diode has to be the of the size SMA (= DO_214AC), and should be placed at the position D_OUT1-4.
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Figure 13 Positioning of free wheeling diodes
2.6 Bill of materials (BOM)
PROFET™+2 Arduino Shield - bill of materials (BOM)
Part Value Device Package
BAT+ LSP13 LSP13 LSP13
C1 1 nF C-EUC0603 C0603
C2 1 nF C-EUC0603 C0603
C15 1 nF C-EUC0603 C0603
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Part Value Device Package
C_OUT1 4.7 nF C-EUC0603 C0603
C_OUT2 4.7 nF C-EUC0603 C0603
C_OUT3 4.7 nF C-EUC0603 C0603
C_OUT4 4.7 nF C-EUC0603 C0603
C_S1 not mounted C-EUC0603 C0603
C_VS 100 nF C-EUC0603 C0603
C_VS1 68 nF C-EUC0603 C0603
C_VS3 68 nF C-EUC0603 C0603
D1 33 V SMCJ33CA SMC_JBEND
D2 BAW56S BAW56S INF-SOT363_V_1PRIMARY
D5 5.1 V Z-DIODESOD123 SOD123
DEN1+DEN 3 LSP13 LSP13 LSP13
DEN2+DEN 4 LSP13 LSP13 LSP13
D_OUT1 not mounted DIODE-DO-214AC DO-214AC
D_OUT2 not mounted DIODE-DO-214AC DO-214AC
D_OUT3 not mounted DIODE-DO-214AC DO-214AC
D_OUT4 not mounted DIODE-DO-214AC DO-214AC
GND PROBE_GND MESSBUEGEL508 MESSBUEGEL508
ICSP not mounted PINHD-2X3 2X03
IN1 LSP13 LSP13 LSP13
IN2 LSP13 LSP13 LSP13
IN3 LSP13 LSP13 LSP13
IN4 LSP13 LSP13 LSP13
IS1+IS2 LSP13 LSP13 LSP13
IS3+IS4 LSP13 LSP13 LSP13
J1 open solder_bridge none
J2 open solder_bridge none
J3 open solder_bridge none
LED1 GREEN LEDCHIPLED_1206 CHIPLED_1206
LED2 GREEN LEDCHIPLED_1206 CHIPLED_1206
LED3 GREEN LEDCHIPLED_1206 CHIPLED_1206
LED4 GREEN LEDCHIPLED_1206 CHIPLED_1206
OUT1 LSP13 LSP13 LSP13
OUT2 LSP13 LSP13 LSP13
OUT3 LSP13 LSP13 LSP13
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