Nexperia
Application Guide
Automotive

Contents
Active Safety

4Analog Gauge Replacements

5

Automotive Lighting6

Battery Management for Electric Vehicles

7

Body Control Module (BCM)

8

Electrical Power Steering (EPS)

9

Engine Control Unit (ECU)

10

Heating Ventilation Air Conditioning (HVAC)

11

Infotainment12
On-Board Charger

13

Passive Safety: Airbag

14Power Block: DC-DC Converter

15

Sensors: Radar, LiDAR, Camera

16

Telematics: e-Call, GPS, V2X17

Nexperia Application Guide2

Introduction
This application guide has been created as a resource to identify specificdesign issues and the standard products (diodes, bipolar transistors,
MOSFETs, ESD protection and Logic devices) required.

Automotive

Active Safety

The guide covers 14 of the most common applications addressing theautomotive market segment.
For each application, you will find the following:

A

B
A 	A brief overview of the application: As a few categories are broad,this will help you understand the key concepts and technicalchallenges involved in the design of the application.

Automotive Active Safety includes systems for Brake Assist, Traction Control, Electronic Stability Control (ESC),
Anti-Lock Braking Systems (ABS), Electronic Power Steering (EPS), and Lane Detection Control (LDC).
These systems have in common multiple processors connected to a wide array of input sensors that output
to electrical and hydraulic systems. The diagram below illustrates an ABS system, others similar.
Design considerations› What is the operating voltage of the MCU? (selects the correct Logic family)› How many analog inputs sensors are present? (consider an Analog Switch)› What is the power requirement of the output solenoid? (selects proper Power MOSFETs)› Are there other voltage domains present? (Level Shifter)› How is the connector and system protected from ESD and voltage transient events? (ESD Protection)

C

E
BatteryKvarious types of devices (Standard Products) that are likely to befound in the application.

Solenoid

J
ARM
MCU

GND

B 	Design Considerations: List of topics to consider to identify theA
Hydraulic solenoid
drive MOSFET

Power management

F

Product
Power MOSFETs

Drives brake solenoid and motors

B
B

Analog Switch(74HEF4067-Q100,
HEF4051-Q100)

Reduces number of analog inputs
required on MCUCLevel Shifters(74AVC1T45-Q100)

Connects different voltage nodes
between systems

D
D

ESD Protection
PESD1CAN-U

General purpose ESD protection
FlexRay ESD protection
CAN ESD protection
LIN ESD ProtectionE

PN Rectifier(PNS4001ER)
Schottky Barrier Diode(PMEG family,
PMEG6010ELR)

Reverse battery protection
DC voltage blocking diodeFreewheeling 3-phase isolatorF

TVS Diode(PTVS family, PTVS33VP1UP)

Transient voltage surge protection

G

Schottky Barrier Diode(PMEG4050ETP)

Free-wheeling diode for DC-DCand inductive load

H
H

General purpose RETS andMatched Pair Transistors(PUMH9)Signal control, MOSFET driver, constantcurrent monitor

J

Small Signal MOSFET(P or N Channel)

High RDSon > 1 Ω used for signal
control, level shifting
Low RDSon < 1 Ω used for load
switch control

K

GA-Transistor(Low Vcesat, PHPT60603PY)

Linear regulator and load switch control

Motor drive
MOSFETGH

Yaw rate sensor

B
G-sensor

AnalogswitchSensor I/F

CAN

CAN transceiver

Use valueA

D

D
Current monitor
FlexRay transceiver
Wheel speed

FlexRayother systems

CC 	Block Diagram: All diagrams illustrated are typical and your specificapplication may vary. The purpose of the diagram is to identify
the numerous Standard Products that are commonly in the design
application.

Nexperia Application Guide

4

D 	Product/Value table: This table calls out the general device types

found in the application, as well as specific part numbers whenpossible. These specific part numbers were identified as the mostcommon part numbers used for the application.

Nexperia Application Guide

3

Automotive

Active Safety
Automotive Active Safety includes systems for Brake Assist, Traction Control, Electronic Stability Control (ESC),
Anti-Lock Braking Systems (ABS), Electronic Power Steering (EPS), and Lane Detection Control (LDC).
These systems have in common multiple processors connected to a wide array of input sensors that output
to electrical and hydraulic systems. The diagram below illustrates an ABS system, others similar.
Design considerations›› What is the operating voltage of the MCU? (selects the correct Logic family)›› How many analog inputs sensors are present? (consider an Analog Switch)›› What is the power requirement of the output solenoid? (selects proper Power MOSFETs)›› Are there other voltage domains present? (Level Shifter)›› How is the connector and system protected from ESD and voltage transient events? (ESD Protection)

Product
A

Power MOSFETs

Drives brake solenoid and motors

B
B

Analog Switch(74HEF4067-Q100,
HEF4051-Q100)

Reduces number of analog inputs
required on MCUCLevel Shifters(74AVC1T45-Q100)

Connects different voltage nodes
between systems

D
D

ESD Protection(PESD1CAN-U)

General purpose ESD protection
FlexRay ESD protection
CAN ESD protection
LIN ESD ProtectionE

PN Rectifier(PNS4001ER)
Schottky Barrier Diode(PMEG family,
PMEG6010ELR)

Reverse battery protection
DC voltage blocking diodeFreewheeling 3-phase isolatorF

TVS Diode(PTVS family, PTVS33VP1UP)

Transient voltage surge protection

G

Schottky Barrier Diode(PMEG4050ETP)

Free-wheeling diode for DC-DCand inductive load

H
H

General purpose RETS andMatched Pair Transistors(PUMH9)Signal control, MOSFET driver, constantcurrent monitor

J

Small Signal MOSFET(P or N Channel)

High RDSon > 1 Ω used for signal
control, level shifting
Low RDSon < 1 Ω used for load
switch control

K

GA-Transistor(Low Vcesat, PHPT60603PY)

Linear regulator and load switch control

E
A

Battery

Hydraulic solenoid
drive MOSFET

Power management

F

K

Solenoid

J
ARM
MCU

GND

Motor drive
MOSFETGH

Yaw rate sensor

B
G-sensor

AnalogswitchSensor I/F

CAN

CAN transceiver

Use valueD
Current monitor
FlexRay transceiver
Wheel speed

Nexperia Application Guide

FlexRayother systems

C

4

Automotive

Analog Gauge Replacements
Analog gauge replacements include gauges to the automotive, marine, motorcycle, and personal water craft
market. Multiple gauges, also known as an instrument cluster, have a variety of input sensors and output displays,
such as LED, LCD, VFD, and mechanical displays.
Design considerations›› What is the analog input voltage range? (determine analog MUX requirements, # of channels)›› What is the MCU operating voltage and system rail voltages? (selects Logic family and Level Shifters)›› What is the display output type? (LED/LCD/VFD require different output voltage/current)›› Is there a size constraint? (Small gauges may require special device packaging)›› How is the connector and system protected from ESD and voltage transient events? (ESD Protection)

Product

Use valueA
A

Analog Switch
74HC/HEF4051-Q100)

8-channel analog input MUX for multiple
sensorsB
B

LED Driver(NPIC6C596-Q100)

For driving LEDs, VFD: up to 30V
and 100 mA per channel

CC

Level Shifter(74AVC1T45-Q100)

Level shifter between low-volt MCU
and 5 V sensors

D
D

ESD Protection

General purpose ESD protection
FlexRay ESD protection
CAN ESD protection
LIN ESD protection

E
E

PN Rectifier(PNS4001ER)
Schottky Barrier Diode(PMEG family)

DC voltage blocking diodeF

TVS Diode(PTVS family)

Transient voltage surge protection

G

Schottky Barrier Diode(PMEG family)

Free-wheeling diode for DC-DCand inductive load

H
H

General purpose RETS andMatched Pair Transistors

Signal control, MOSFET driver, constantcurrent monitor

J

Small Signal MOSFET(P or N Channel)

High RDSon > 1 Ω used for signal control,level shifting
Low RDSon < 1 Ω used for load
switch control

K
K

Transistor(Low Vcesat)

Linear regulator and load switch control

Display biasing
Display
LED backlighting

Sensor inputs
Tachometer
Speed
Engine temperature
Oil pressure
Battery voltage
Fuel level

B
C Video buﬀer

A

Inductive sensor

Analog
MUX

Audio DAC
Audio ampliﬁer

SpeakerG
Stepper motors

Embeddedprocessor

Motor driver

H Load drivers

CAN transceiverD

Various 50mA - 300mA loads- Dashboard

B

LIN transceiver

LED drivers- Illumination- Button backlight- Indicators

J
Buttons
and knobs

Input power source

E System power F

K

SDRAM

Flash/EPROM

Load switch

Core and I/O power

Power supply

Nexperia Application Guide

5

Automotive

Automotive Lighting
Automotive lighting encompasses several major systems in the car: exterior (headlight/taillight), interior(dome, ambient), and instrumentation (LED backlight). Incandescent lighting is being replaced by LED Lighting,covering a variety of drive methods.
Design considerations›› What is the wattage of LED? (determines the drive method)›› Is there an MCU or is this a standalone application? (NPIC LED driver)›› What is the LED array voltage? (determines MOSFET)›› How is the connector and system protected from ESD and voltage transient events? (ESD Protection)

DRIVER MODULE

E

B

Battery

LED MODULE

H

Boost
voltageregulator

Buck current
regulator

DC voltage rail

LED 12

D

F

3.3 V

Connector

LED drive

Buck current
regulator

ARM
MCU

G
K

CAN
Bus

Nexperia Application Guide

CAN
Xcvr

J
Rx
Tx

C
K

n channels
matrix manager

LA

Direct drive of low watt LEDs
(turn signals, etc.)

B
B

Power MOSFETs

High power LED driverC
C

Level Shifter(74AVC1T45-Q100)

Connection between MCU and highvoltage section

D

Transistor(Low Vcesat)(PBSS5260PAPS)

Linear regulator and load switch control
and LED dimming control

E
E

PN Rectifier(PNS40010ER)
Schottky Barrier Diode(PMEG6020ELR)

DC voltage blocking diodeFF

TVS Diode(PTVS33VP1UP)

Transient voltage surge protectionG

ESD Protection(PESD1CAN-U)

General purpose ESD protection
FlexRay ESD protection
CAN ESD protection
LIN ESD protection

H
H

Schottky Barrier Diode(PMEG family,
PMEG6020ELR)

Free-wheeling diode for DC-DC buck/
Boost converter(asynchronous or synchronous)J

General purpose RETS andMatched Pair Transistors(PUMH9)Signal control, MOSFET driver, constantcurrent monitor

K

Small Signal MOSFET(P or N Channel,
PMPB215ENEA)High RDSon > 1 Ω used for signal control,level shifting
Low RDSon < 1 Ω used for load
switch control

L

MOSFET (P or N channel,e.g. PMPB95ENEA,
PMPB100XPEA)

Low RDS(on) < 1 used for drive of medium
power LEDs

M

PBSS series

Low VCE(sat) transistor, 20V – 60V
1A – 2A

M

LED 12

LED 1

A

Cable

L

M

Use value

LED Driver(NPIC6C4894-Q100,
74HCT4094-Q100,
74HCT595-Q100)

A

5V
n channels

GND

3.3 V/5 V
auxilliary
voltageregulators

LED 1

Product

6

Automotive

Battery Management for Electric Vehicles
Automotive battery management is critical for hybrid and all-electric vehicles. Battery Management includes
the on-board charging system, load management, and battery balance.
Design considerations›› What is the total number of battery cells? (determines the number of duplicate monitor circuits)›› What is the IC operating voltage? (HC for 5 V, HEF for 12 V Logic, etc.)›› Are there multiple voltage supplies (Level Shifters)›› How is the connector and system protected from ESD and voltage transient events? (ESD Protection)

A
Battery
monitoringIC

Up to 20cells

E

Distributed
battery
packs
throughout
electric
vehicleD

Product

Use value

A
A

Power MOSFETs

Current control for cells

B
B

Level Shifter(74AVC1T45-Q100)

Level shift between voltage nodes

C
CHigh Voltage Logic(74HEF4001-Q100)

Logic signals at 12 V supply

D

Small Signal MOSFET(P or N Channel)

High RDSon > 1 Ω used for signal control,level shifting
Low RDSon < 1 Ω used for load
switch control in battery voltage cellbalancingE
E

TVS Diode(PTVSxP1UTP)

Transient voltage surge protectionF

ESD Protection(PESD1CAN-U)

General purpose ESD protection
FlexRay ESD protection
CAN ESD protection
LIN ESD protection

G
G

General purpose RETS andMatched Pair Transistors(PUMH9)Signal control, MOSFET driver, constantcurrent monitor

Battery

Battery
monitoring
IC

G
Voltage protection

ARM
MCU
Battery
monitoringIC

C

LDO/PORCAN Xcvr

B

Isolator

Vehicle ECUFNexperia Application Guide

7

Automotive

Body Control Module (BCM)
Body control modules are distributed throughout a vehicle to control features such as power seats, power
windows, door locks, and other functions with basic motor control. There are multiple BCM’s in todays modern
vehicle.
Design considerations›› What voltage do the BCM nodes operate at? (determines Logic family, MOSFET requirements)›› What is the current requirement of the loads? (determines MOSFET sizes)›› What is the type and voltage of the inputs? (determines Level Shifters, Analog Switch requirements)›› How is the connector and system protected from ESD and voltage transient events? (ESD Protection)

Ethernet

CAN busH

LIN busE

Battery

System
basis
chip

G
J

Hall sensor

C
VoltageTranslator

GND

Temperature
sensorARM
microcontroller

E

A

ESD

LOGIC

Analog MUX/
Digital MUXContactmonitoringHigh sideswitches

Relay
drivers

Brushed DC
motor driver

Lighting
RelaysWipers
HVAC
Washer, etc.

M
M

Power seat,sunroof, power
door, windows,
wipersM

Adoptive front
lightsK

Digital sensors

Stepper
motor driverPressureF

Inputs: door
switches, seatbelt switch,
lamp switch, etc.

Product

Use valueA
AHigh Voltage Logic
HEF-Q100 family)

Operates at 12 V

B
B

LED Driver(NPIC6C596-Q100)

Low cost LED drive solution

CC

Level Shifter(74AVC1T45-Q100)

Connecting 12 V ensors to 5 V MCU

D
D

Analog Switch(-Q100 selection)

For audio control, sensor inputs

E
E

ESD Protection

General purpose ESD protection
FlexRay ESD protection
CAN ESD protection
LIN ESD protection

F

Small Signal MOSFET(P or N Channel)

High RDSon > 1 Ω used for signal control,level shifting
Low RDSon < 1 Ω used for load
switch control and LED dimming

G

Transistor(Low Vcesat)

Linear regulator and load switch control
and LED dimming control

H
H

PN Rectifier(PNS4001ER)
Schottky Barrier Diode(PMEG family)

DC voltage blocking diodeJJ

TVS Diode(PTVS family)

Transient voltage surge protection

K
K

Power MOSFETs

For motor control

D
AnalogSwitchLED drivers

B

Temperature
current
Analog sensors

Nexperia Application Guide

8

Automotive

Electrical Power Steering (EPS)Electrical Power Steering is beginning to replace traditional belt-driven hydraulic power steering systems.
Advantages include improved packaging, less parasitic engine losses and improved performance.
Design considerations›› What is the size of the vehicle? (determines power requirements of MOSFETs)›› How is the unit ESD protected during both assembly/repair and normal operation?
›› What is the supply voltage? (equal to 12V or greater?)

1

BatteryCprotection

F

2
1

System Basis Chip

Product

Use valueA

Low VCE(sat) transistor(PHPT60603PY)

Linear voltage regulation

B
B

Schottky rectifier(PMEG050V150EPD)

Freewheeling 3-phase isolator

C

Schottky rectifier(PMEG10020ELR)

Reverse polarity protection

D

D

Schottky rectifier(PMEG4020EPKPMEG3020EJ )DC/DC conversion

E

ESD protection(PESD2IVN-U)CAN ESD protection

F

Power MOSFET

Motor drive / isolator

G

ESD protection(PESD3V3S1UL)

ESD protection on motor connectoruC

3-ph Pre inverter
IVN

D

F

E
A
3-ph Isolator
GND

SPI

B

F

ADC

G
GND

Nexperia Application Guide

9

Automotive

Engine Control Unit (ECU)
The function of the ECU is to meet performance, emissions, and fuel economy requirements. Subsystemcomponents include the fuel injection system and ignition requiring
inputs from a large number of sensors.
Design considerations›› How many sensor inputs? (determines need for Analog MUX Switches))›› What is the number and type of outputs? (determines MOS devices)›› What is the operating voltage of ECU? (determines HEF, HC, etc Logic family)›› How is the connector and system protected from ESD and voltage transient events? (ESD Protection)

Crank angle sensor

Sub MCUCam shaft sensor
Air ﬂow sensor

Accelerator pedal sensor
Throttle position sensor

A
ARM
MCU

O2 sensor
driverPressure sensor

A/F sensor
driver

EEPROMK

A/F sensor

E

B

J
Regulator IC
w/ DC/DC

Battery

FlexRaytransceiverG

Multiplexing many analog inputs to MCU

B

Power MOSFETs

Control of solenoids, pumps, etc.

C

Level Shifter(74AVC1T45-Q100)

Level shift between various devices

D
DHigh Voltage Logic(HEF -Q100 family)

Direct connect to 12 V supplies

E

PN Rectifier(PNS4001ER)
Schottky Barrier Diode(PMEG family)

DC voltage blocking diodeF

TVS Diode(PTVS family)

Transient voltage surge protectionG

ESD Protection

General purpose ESD protection
FlexRay ESD protection
CAN ESD protection
LIN ESD protection

H

Small Signal MOSFET(P or N Channel)

High RDSon > 1 Ω used for signal control,level shifting
Low RDSon < 1 Ω used for load
switch control

J

Schottky Barrier Diode(PMEG family)

Free-wheeling diode for DC-DC buck/
Boost converter and inductive load

K

General purpose RETS andMatched Pair Transistors

Signal control, MOSFET driver, constantcurrent monitor

L

Transistor(Low Vcesat)

Linear regulator and load switch control

WT solenoid
Fuel pump

H L
Drivers• Discrete• Motor IC• Driver IC• etc.

Temp sensor

Analog Switch(74HC4066-Q100)

EGR motor

Injectordriver

Knocking sensor

O2 sensor

Fuel injectors

Solenoid

B Throttle motor
Swirl/tumble control motor
Relay
Canister purge valve
O2, A/F heaterCantransceiver

LIN
transceiver

Immobilizer

Use valueA

Ignition (gasoline)

IGBT

EGR motor
driverSensorI/F

EGR sensor

PredriverProduct

Diagnostic

F

C

D
GND

Diagnostic

Electric
power
steering

Automatictransmission

Canister purge valve

Brake

Injector driver circuit
Injector#1

Injector#2

Injector#3

B

Injector#4

Instrumentation

EGR motor driver circuit
VBB

Pre-driverandPower ICB
PWM control
from 20 kHz
Motor driver MOSFETs

Nexperia Application Guide

10

Automotive

Heating Ventilation Air Conditioning (HVAC)
An automotive HVAC system controls the heating and cooling of the passenger compartment and defrosting
the windshield. System control requires monitoring an array of temperature sensors that control fan motors
and dampers.
Design considerations›› How many sensor inputs? (opportunity for Analog Switch)›› What are voltages of the control system and external devices? (Level Shifters)›› What is the current draw of the fan and heater motors? (Power MOSFETs opportunity)›› How is the connector and system protected from ESD and voltage transient events? (ESD Protection)

F

Blower motor(air volume control)

Power management

H Motor drive MOSFET
Switch panel

G

A

K

C

Seat heater

Use value

A

Power MOSFETs

Fan and motor drive

B

Analog Switch(74HC4066-Q100)

Temp sensor multiplexingC

LED Driver(NPIC6C596-Q100)

LED drive for backlighting and panel
indicators

D
D

Level Shifter(74AVC1T45-Q100)

Level shift between MCU and subsystems

E

ESD Protection

General purpose ESD protection
FlexRay ESD protection
CAN ESD protection
LIN ESD protectionF

PN Rectifier(PNS4001ER)
Schottky Barrier Diode(PMEG family)

DC voltage blocking diodeGG

TVS Diode(PTVS family)

Transient voltage surge protection

H
H

Schottky Barrier Diode(PMEG family)

Free-wheeling diode for DC-DC andinductive loadJ

General purpose RETS andMatched Pair Transistors

Signal control, MOSFET driver, constantcurrent monitor

K

Small Signal MOSFET(P or N Channel)

High RDSon > 1 Ω used for signal control,level shifting
Low RDSon < 1 Ω used for load
switch control

L

Transistor(Low Vcesat)

Linear regulator and load switch control

LIN

L

Battery

Product

Heater drive IPD
ARM
MCU

GND

Damper motor(mode control)

Supply voltage monitor

Inside temperature

B

Damper motor(temperature control)J
Outside air temperature

Damper motor (insideand outside air control)D
LIN transceiverCompressor(air conditioning control)
CAN transceiver

Nexperia Application Guide

E
CAN

11

Automotive

Infotainment
Infotainment systems provide entertainment to the driver and passenger, as well as, navigationand communications. Subsystems include GPS, Audio, WiFi, Bluetooth, and user interface.
Design considerations›› What is the interface between system modules? (Level Shifters)›› How is the connector and system protected from ESD and voltage transient events? (ESD Protection)

GPS

Bluetooth

WiFi

Flash memory

Product
A

Level Shifter(74AVC1T45-Q100)

Connection between modules

B

Analog Switches(74HC4051-Q100)

Touch sensor input arrayC

Low Voltage Logic(LVC-Q100 family)

Low power general purpose logic

D
D

ESD Protection, Single andMulti-Line(PUSB3, PESD family)

General purpose ESD protection for highspeed data lines. CAN ESD protection andprotection for various user interfaces

E

PN Rectifier(PNS4001ER)
Schottky Barrier Diode(PMEG family)

DC voltage blocking diodeF

TVS Diode(PTVS family)

Transient voltage surge protection

G

General purpose RETS andMatched Pair Transistors

Signal control, MOSFET driver, constantcurrent monitor

H

Small Signal MOSFET(P or N Channel)

High RDSon > 1 Ω used for signal control,level shifting
Low RDSon < 1 Ω used for load
switch control

J

Transistor(Low Vcesat)

Linear regulator and load switch control

K

Power MOSFETs

Power management

Touch sensors

DDR3 1066
64 bits up to 2GB

A
B

D

SDIO
12S
Radio+
audio DSP

UART

G
UART

H

3G/4G
LTE modem

Class Daudio amp

UART

Applications
processor

LVDS

USB ULP1

Dual displays

Use valueIC
2Compass
gyro accelerometer

I 2C

Mobile TV

K
E

CameraBattery

Power management

I2C

SDIO

USB

J
F

Video decoder

MIC

C
D
Device storage and connectivity

Nexperia Application Guide

12

Automotive

On-Board Charger
An On-Board Charging system maintains and charges the battery array in hybrid and electric vehicles.
Design considerations›› What is the maximum operating voltage? (determines FET characteristics)›› What is the MCU operating voltage and system rail voltages? (selects Logic family and Level Shifters)›› How many cells are in battery array? (determines quantity charging sections)›› How is the connector and system protected from ESD and voltage transient events? (ESD Protection)

Product
A

Power MOSFETs

Battery charging circuits

B

High Voltage Logic(HEF-Q100 family)

Direct high voltage connections

C

Level Shifter(74AVC1T45-Q100)

Connection between voltage domains

D

ESD Protection

General purpose ESD protection

E
E

PN Rectifier
Schottky barrier diodeDC voltage blocking diodeF

TVS DiodeTransient voltage surge protection

G

Small Signal MOSFETs
Pch or Nch

High RDSon > 1 Ω used for signal control,level shifting
Low RDSon < 1 Ω used for load
switch control

H

Schottky Barrier Diode
PMEG series

Free-wheeling diode for DC-DCand inductive loadJ

General Purpose
RETS, & Matched Pair
Transistors

Signal control, MOSFET driver,constant current monitor

AC line 85-265 VAC
Rectiﬁed AC

Isolationboundary

Boosted DC
output385 V - 400 V

High Power
DC/DC converter

MOSFETdriverHigh voltage
battery packA
Relay
driverOVLO/
UVLOCurrent
sense

Current sense

Use value

Current sense
Digital power controller

Digital power controller

B

J

CPower line
communication

Interface options

D

F

Standby power

Nexperia Application Guide

Isolation

Interface options

E

G

H

Isolation
Temp
sensorAuxiliary power

13Automotive

Passive Safety: Airbag
Passive safety systems are devices which require no user input to operate, such as the airbag
and self-tensioning seatbelts.

Product

Design considerations›› How many and what type of input sensors are used? (opportunity for an Analog Switch)›› What is the current requirement of the output devices? (Power MOSFETs requirements)›› How is the connector and system protected from ESD and voltage transient events? (ESD Protection)›› What are the system voltage rails? (Level Shifters)

Motorized seatbelt

A

Pretension system

A

High Voltage Logic(HEF-Q100 family)

Operates at unregulated 12 V supply

B

Power MOSFETs

Tensioning motors, squib activation

C

Level Shifter(74AVC1T45-Q100)

Connection of different nodes

D

Analog Switch(74HC4051-Q100)

Analog sensor multiplexingE

ESD Protection

General purpose ESD protection
FlexRay ESD protection
CAN ESD protection
LIN ESD protectionF

PN Rectifier(PNS4001ER)
Schottky Barrier Diode(PMEG family)

DC voltage blocking diodeG

TVS Diode(PTVS family)

Transient voltage surge protection

H

Schottky Barrier Diode(PMEG family)

Free-wheeling diode for DC-DC andinductive loadJ

General purpose RETS andMatched Pair Transistors

Signal control, MOSFET driver, constantcurrent monitor

PWM
Airbags

E
CAN transceiver

CAN

Full safe switch

Radar

B

Use value

Squib driverD
Weight sensor

Main MCU

Occupant detection

Sensor I/F

Sub MCU

Regulator

K

Small Signal MOSFET(P or N Channel)

High RDSon > 1 Ω used for signal control,level shifting
Low RDSon < 1 Ω used for load
switch control

JL

X/Y sensor

Transistor(Low Vcesat)

Linear regulator and load switch control

CAN transceiver

L

F

B

Battery

H

K

LPower management

Satellite sensors

G

E

GND

Nexperia Application Guide

CAN

CEngine/automatic transmission

Electric power steering

14

Automotive

Power Block: DC-DC Converter
Automotive DC-DC converters are used for high-efficiency conversion between the 12 VDC battery voltage
and high voltage systems.
Design considerations›› What is the total system voltage? (determines FET parameters and Logic family)›› How is the connector and system protected from ESD and voltage transient events? (ESD Protection)

Product
A

Power MOSFETs

Power conversion

B

High Voltage Logic(74HEF4001-Q100)

Capable of operating directly on highvoltage rails

C

Analog Switch(HEF4066-Q100)

Multiplexing many voltage sensors to
MCU

D

ESD Protection

General purpose ESD protection
FlexRay ESD protection
CAN ESD protection
LIN ESD protectionE

PN Rectifier(PNS4001ER)
Schottky Barrier Diode(PMEG family)

DC voltage blocking diodeF

TVS Diode(PTVS family)

Transient voltage surge protection

G

Schottky Barrier Diode(PMEG family)

Free-wheeling diode for DC-DC andinductive load

H
H

General purpose RETS andMatched Pair Transistors

Signal control, MOSFET driver, Constantcurrent monitor

J

Small Signal MOSFET(P or N Channel)

High RDSon > 1 Ω used for signal control,level shifting
Low RDSon < 1 Ω used for load
switch control

K

Transistor(Low Vcesat)

Linear regulator and load switch control

Isolation

Gate drivers

Gate drivers

AHigh
voltage
Li-ionbatteryE

Synchronousrectiﬁcation

HV full bridge
controller

F

12V
board net

ReferenceTemp
sensorC

H
ADC

Digital isolator

MCU/DSP
V&I
sense

Isolated
DCDC-converter

J

V&I
sense

B

ADC

A

G

K

Use value

Power supply

CAN

D
CAN
High voltage

Nexperia Application Guide

Supervisor

Low voltage

15

Automotive

Sensors: Radar, LiDAR, Camera
Automotive sensors provide input to the Driver Assist System (DAS). These systems provides data forthe systems that control and monitor blind spots, automatic parking, cruise control, and night vision.

Product
A

Power MOSFETs

Power conversion from 12 V
supply rail

B

Analog Switch
74HC/HEF4051-Q100)

MUX input from multiple analog sensors
to single MCU channel

C

Level Shifter(74AVC8T245-Q100)

Up to 8 channels of bidirectional translation between sensor and control module

D

Mini Logic Packages

Small logic packaging to fit into thesensorE

ESD Protection

General purpose ESD protection
FlexRay ESD protection
CAN ESD protection
LIN ESD protectionF

PN Rectifier(PNS4001ER)
Schottky Barrier Diode(PMEG family)

DC voltage blocking diodeE

G

TVS Diode(PTVS family)

Transient voltage surge protection

CAN

H

General purpose RETS andMatched Pair Transistors

Signal control, MOSFET driver, constantcurrent monitor

J

Small Signal MOSFET(P or N Channel)

High RDSon > 1 Ω used for signal control,level shifting
Low RDSon < 1 Ω used for load
switch control

Design considerations›› How many input sensors? (determines number channels for Analog Switch and Level Shifters)›› Is there a size constraint with the sensor? (use Mini Logic packaging to reduce footprint)›› What are the system voltage rails? (Level Shifters)›› What are the power requirements for the remote sensor? (consider AUP, AXP low power logic)›› How is the connector and system protected from ESD and voltage transient events? (ESD Protection)

F
Battery
To cluster,
ADAS, or BCM

G
D

GND

LDO

Load
switchMCU

Wide VIN
DC/DC
converter

Wide VIN
LDO

A

Osc
Piezo
transducer
Driver

MCU
LIN

Driver

E

LIN

B
C
ADC
SAR

Low-noiseampliﬁer

Use value

Park-assist ECU

HJ
Ultasonic sensor module(4-12 modules)

Ultrasonic sensor module

Nexperia Application Guide

16

Automotive

Telematics: e-Call, GPS, V2X
Telematics includes the various communications methods between the vehicle and theoutside world, which may include V2x (Vehicle to Vehicle/Infrastructure), GPS, OnStar, cellular, etc.
Design considerations›› What is the system voltage levels? (Level Shifters)›› What are the operating frequencies? (selects Logic family)›› How is the connector and system protected from ESD and voltage transient events? (ESD Protection)

Cellularmodem

Battery

E

ChargeinterfaceF

GSM antennaPowermanagement

MemoryReal time
clock

Power
supplyJ
Audio
digitalGPS antenna
Cellularconnectivity

Application
processor

Product
A

Level Shifter(74AVC8T245-Q100)

Up to 8 channels of bidirectional translation between sensor and control module

B

Mini Logic Packages

Small logic packaging to fit in the module

C

Analog Switch(74HEF/HC4051)

MUX input from multiple analog sensors
to single MCU channel

D

ESD Protection

General purpose ESD protection
FlexRay ESD protection
CAN ESD protection
LIN ESD protectionE

PN Rectifier(PNS4001ER)
Schottky Barrier Diode(PMEG family)

DC voltage blocking diodeF

TVS Diode(PTVS family)

Transient voltage surge protection

G

General purpose RETS andMatched Pair Transistors

Signal control, MOSFET driver, constantcurrent monitor

H

Small Signal MOSFET(P or N Channel)

High RDSon > 1 Ω used for signal control,level shifting

J

Transistor(Low Vcesat)

Linear regulator and load switch control

K

LED Driver(NPIC6C596-Q100)

Low cost LED backlight driver

Audio
interfaces
Audio
analogGPS

LNAs

Interface
MCU

B

NFC

NFC antenna
Smartcards

C

Security

Use value

NFC tags
UART

I2C

I2S

NFC-enabledmobile devices

A
Diagnosis/
interface

Nexperia Application Guide

USB

Keypadinterface

GPIO

D

Connectivity

CAN

G

Ethernet

SPI

AD/DA

H
Sensorinterface

Outputdriver

Display
driver

Discretes

I/O
protectionK17

© 2017 Nexperia B.V.
All rights reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does
not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. No liability will be accepted by the publisher for any
consequence of its use. Publication thereof does not convey nor imply any license under patent- or other industrial or intellectual property rights.

nexperia.com

Date of release:
August 2017
Printed:In the Netherlands