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Programmable Logic Control (PLC) Solution Guide
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The Programmable Logic Controller (PLC) is the workhorse of Industrial Control systems. It uses digital and analog I/O modules to interface to sensors, actua-tors and other equipment. These I/O modules must meet stringent electri-cal specifications and designers face challenges in condi tioning and convert-ing these signals. In addition, increas-ing levels of embedded processing and connectivity can be seen on these modules.
The PLC SystemPLCs can be segmented by I/O count and scan rates. They can also be classi-fied as brick type versus modular PLCs. A small or brick PLC has a fixed number of connections for inputs and outputs. Modular PLCs have a chassis (also called a rack) into which are placed modules with different functions. The processor and selection of I/O modules is custom-ized to fit the application. A modular PLC consists of the Central Processing Unit (CPU), a power supply and various I/O modules. The CPU performs the main controller functions like scanning data and running control sequences. The power supply unit converts line power to 24 volts. The I/O modules are used
to measure data from sensors and to control various actuators. Together, the input and output modules along with the central controller form a control loop.
I/O Module TypesI/O modules can be classified as analog input (AI), analog output (AO), digital input (DI) and digital output (DO). They are usually cate go rized into 2-, 4-, 8- and 16-channel modules. I/O modules need to meet stringent electrical specifications such as the IEC 61000-4 family of Electro Magnetic Compatibility (EMC) tests for surge, ESD (Electro static Discharge) and EFT (Electrically Fast Transients). They also need short-circuit and over load protection. All these modules include isolation between the control side and the field side via DC-DC converters and isolation on digital commu nication between the field devices and the digital backplane. Communication over the digital back plane is done by a variety of interfaces (RS-485, CAN, Ethernet, etc.) and industrial fieldbuses (PROFIBUS®, DeviceNet™, CANopen®, Modbus®, EtherCAT®, EtherNet I/P™, PROFINET®, SERCOS®, POWERLINK, etc.). On the following pages we discuss solutions from TI for these various I/O types.
I/O
Modules
Power
Supply
Module
CPU
Includes backup
power
220/110 Volt
Proprietary digital bus
24-Volt
power bus
Can be
integrated
with CPU
Comm.
Module
(Fieldbus,
Ethernet)
Table of Contents
Programmable Logic Control2 Overview
Analog Input3 Analog Front End3 Precision Amplifier3 Precision ADC
(£ 10MSPS)4 Digital Isolator4 Voltage Reference
Analog Output4 Precision DAC4 Analog Output Driver
Digital I/O5 Digital Serializer5 Drivers
Connectivity & Interface5 Industrial Interface
Transceiver6 Isolated Industrial Interface6 Ethernet PHY
Power6 Input Power Protection6 LDO Linear Regulator7 DC-DC Regulator7 Window Comparator
Embedded Processing Solutions for PLC7 Embedded Processing Solutions8 Piccolo™ MCU
2 | Programmable Logic Control (PLC) Solution Guide 2013 Texas Instruments
Programmable Logic Control (PLC)Overview
Analog Inputs
Analog input modules capture and measure signals such as tempera-ture, pressure, flow, level, vibration and motion. These parameters are transmit-ted from equipment such as sensors and other field devices on the factory floor in the form of current or voltage. Current loops typically range from 4–20 mA while voltage inputs can be single ended or differential ranging from 0–5V, 0–10V, ±5V and ±10V.
Group Isolated Analog Input Module
Per Channel Isolated Analog Input Module
AMP
Protection
Protection±5 V, ±10 V
0–5 V, 0–10 V
4–20 mA0–10 mA
From Sensors
Group Isolated Analog Input Module
DigitalIsolation
DigitalIsolation
Controller Interface
Memory
Buffer
HART
ADC
VREF
PGAMUX
Buffer
Protection
Protection
AMP
Controller Interface
MemoryDigital
Isolation
DigitalIsolation
ADC
ADC
±5 V, ±10 V0–5 V, 0–10 V
4–20 mA0–10 mA
Field Inputs From Sensors
DigitalIsolation
DigitalIsolation
Controller Interface
AMP
AMP
ADCMUX
Protection
Protection VREF
V+
Temp
Flow
Optical
Pressure
Level
+
LEGEND Logic
ADC/DACClocksOther
Power
RF/IF
ProcessorInterface
Amplifier
Precision Amplifiers
Device DescriptionNumber of Channels
Total Supply Voltage (Min)
(+5V=5, ±5V=10)
Total Supply Voltage (Max)
(+5V=5, ±5V=10)
Vos (Offset Voltage @
25°C) (Max) (mV)
Offset Drift (Typ)
(µV/°C)
Slew Rate (Typ) (V/µs)
GBW (Typ) (MHz)
Iq per Channel
(Max) (mA)
Vn @ 1kHz (typ)
(nV/rtHz)
Operating Temp. Range
(°C)Pin/
PackagePrice * (US$)
OPA21880.03µV/°C, 6µV Vos, low-noise, rail-to-rail output, 36V zero-drift operational amplifier
2 4 36 0.025 0.03 0.8 2 0.475 8.8 –40 to 105 8/SOIC, 8/VSSOP 1.40
OPA2111.1nV/rtHz noise, low-power, precision operational amplifier in tiny DFN-8 package
1 4.5 36 0.05 0.15 27 45 4.5 1.1 –40 to 1258/SOIC, 8/SON,
8/VSSOP3.45
OPA14011MHz, single-supply, low-noise, precision, rail-to-rail output, JFET amplifier
1 4.5 36 0.12 0.35 20 11 2 5.1 –40 to 1258/SOIC,
5/SOT-23, 8/VSSOP
1.55
OPA827 Low-noise, high-precision, JFET-input operational amplifier 1 4 36 0.15 2 28 22 5.2 4 –40 to 125 8/SOIC, 8/
VSSOP 3.75
OPAx227 High-precision, low-noise operational amplifiers 1–4 5 36 0.075 0.1 2.3 8 3.8 3 –40 to 85
DIP-8, SO-8, DIP-14, SO-14
1.10 to 2.60
OPA320 Precision, 20 MHz, 0.9pA Ib, RRIO, CMOS operational amp 1 1.8 5.5 0.15 1.5 10 20 1.75 8.5 –40 to 125 5/SOT-23,
6/SOT-23 0.80
OPA365 2.2V, 50MHz, low-noise, single-supply rail-to-rail operational amplifier 1 2.2 5.5 0.2 1 25 50 5 4.5 –40 to 125 5/SOT-23,
8/SOIC 0.65
OPA335/ 2335
0.05 µV/°C max, single-supply CMOS operational amplifier 1/2 2.7 5.5 0.005 0.02 1.6 2 0.35 1.4 –40 to 125
5/SOT-23, 8/SOIC,
8/VSSOP
1.00/ 1.60
Precision ADCs (£ 10MSPS)
Device DescriptionResolution
(Bits)
Sample Rate (Max) (SPS)
No. of Input Channels
VREF (V)
INL (Max)
(±)
Power Consumption (Typ) (mW) Architecture
Input Voltage
Range (V) Interface
Operating Temperature Range (°C)
Pin/ Package
Price* (US$)
LMP90097/098/ 099/100
Multi-channel, low power 24-bit sensor AFE with true continuous background calibration
24 214 2/2/4/4 Diff 4/4/7/7 SE Int/Ext 15 ppm FSR 5.3 Delta-Sigma ±VREF/PGA Serial SPI –40 to 125 28/HTSSOP 2.86/3.01/
3.17/3.33
ADS1246/7/8Precision 24-bit ADC with integrated low-noise PGA (48nV at a gain of 128)
24 2k 1/2/4 Diff 1/3/7 SE Int/Ext 0.00002%
FSR 1.4 Delta-Sigma ±VREF/PGA Serial SPI –40 to 105 28/TSSOP 3.45/4.45/ 4.95
ADS1252/4/5/8ResolutionPlus 24-bit, 40-kHz analog-to-digital converter
24 41k/20k/ 30k/125k 1/2/4/16 Ext 0.0015%
FSR 40/4/36/42 Delta-Sigma ±VREF/PGA Serial SPI –40 to 85 SOIC/16SSOP/ 20SSOP/48VQFN
6.45/7.17/ 6.96/13.05
ADS1259 Low-noise, 14kSPS, 24-bit analog-to-digital converter 24 14.4k 1 Int/Ext 0.0003%
FSR 13 Delta-Sigma ±VREF/PGA Serial SPI –40 to 105 20/TSSOP 5.60
ADC141S626/ ADC161S262
14-/16-bit, 50 to 250 kSPS, differential input, MicroPower ADC
14/16 250k 1 Diff Ext 2 LSB 4.8/5.8 SAR 0–5.5 Serial SPI –40 to 105 10/VSSOP 3.42/5.00
ADS82012.2V to 5.5V, low-power, 12-bit, 100kSPS, 8-channel DAS with PGA and SPI™
12 100k 8 Ext 0.9 LSB 1.32 SAR 0-5.5 Serial SPI –40 to 85 24/VQFN 2.75
ADS8319 Precision 16-bit SAR w/ SPI interface 12/16/16 250 1 SE 2.5/2.5/
4.09 Int 1.5 LSB 18 SAR ±10 Serial SPI –40 to 85 10/VSSOP, 10/SON 6.00
ADS8634/812-bit, 8-channel, bipolar SAR with software-selectable input ranges
12 1M 4 SE/8 SE Int/Ext 1.5 LSB 5.85/14.45 SAR ±10 Serial SPI –40 to 125 24/VQFN, 30/TSSOP 2.85/3.25
*Suggested resale price in U.S. dollars in quantities of 1,000. New products are listed in bold red.
Texas Instruments Programmable Logic Control (PLC) Solution Guide 2013 | 3
Analog Outputs
Analog output modules are used to drive and con trol actuators and other machines to form part of an overall control system. Current-loop outputs typically range from 4–20 mA while voltage outputs range from 0–5V, 0–10V, ±5V and ±10V.
CommunicationFieldbus IN
Group Isolated Analog Output Module
Per Channel Isolated Analog Input Module
AMP
Protection
Protection
AMPControllerInterface
Memory
DigitalIsolation
DigitalIsolation
DAC
DAC
DigitalIsolation
DigitalIsolation
ControllerInterface
AMP
AMP
DAC
Protection
Protection
AMP Protection
VREF
ProtectionAMPDigital
IsolationDAC
To Field Acutators
I/V Driver
4–20 mA
Voltage Driver
0–5 V, 0–10 V, ±5 V, ±10 V
Current Driver
0–5 V, 0–10 V, ±5 V, ±10 V4–20 mA
I/V Driver
4–20 mA
Voltage Driver
0–5 V, 0–10 V, ±5 V, ±10 V
Current Driver
0–5 V, 0–10 V, ±5 V, ±10 V4–20 mA
LEGEND Logic
ADC/DACClocksOther
Power
RF/IF
ProcessorInterface
Amplifier
Digital Isolators
Part Number Description
Isolation Rating
(kVrms)
Peak Isolation Rating (Vpk)
Working Voltage (Vpk)
Forward /Reverse
Channels
Speed (Max)
(Mbps)
VCC (Min) (V)
VCC (Max)
(V)Default Output
Propagation Delay (Typ)
(ns)
Operating Temperature Range (°C) Pin/Package
Price* (US$)
ISO7420 Low-power dual-channel isolators 2500 4000 560 2/0 1 3.3 5 High 9 –40 to 105 8/SOIC 0.85
ISO7420FCCLow-power 2/0 dual-channel digital isolator with fail-safe output low and noise filter
2500 4000 2/0 50 3.3 5 Low 20 –40 to 85 8/SOIC 1.05
ISO7631FC 4kVpk low-power triple-channel, 25Mbps digital isolator 2500 4000 1414 3/1 25 2.7 5 Low 17 –40 to 125 16/SOIC 1.40
ISO7141FCC
4242-VPK Small-footprint and low-power 3/1 quad-channel digital isolator with fail-safe output low
2500 4000 560 3 / 1 50 2.7 5 Low 23 –40 to 125 16/SOIC 1.90
Voltage Reference
Part Number Description
VO (V)
Temp Coeff (Typ) (ppm/°C)
Temp Coeff (Max)
(ppm/°C)
Initial Accuracy
@ 25/°C (%)0.1–10Hz Noise (Max) (μVpp)
Iout/Iz (Max) (mA)
Iq (Typ) (µA)
Vin (Min) (V)
Vin (Max)
(V)
Operating Temperature Range (°C) Pin/Package
Price* (US$)
REF5020 Low noise, very low drift, precision voltage reference 2.048 2.5 3 0.05 6 10 800 2.7 18 –40 to 125 8/SOIC,
8/VSSOP 1.35
REF3325 30ppm/°C drift, 3.9µA, voltage reference 2.5 9 30 0.15 84 5 5 2.7 5.5 –40 to 125 3/SC-70,
3/SOT-23 0.85
LM4132 SOT-23 precision low dropout voltage reference
1.024, 1.25, 2.048, 2.5,
4.09610, 20, 30 0.05 170, 190, 240,
285, 310, 350 20 60 2.2 5.5 –40 to 125 5/SOT-23 0.78
Precision DACs
Device DescriptionResolution
(Bits)No. of
Channels
INL (Max) (±LSB)
Output Range (Max)
(V or mA)Settling
Time (µs) Output Type InterfaceReference:
Type
Operating Temperature Range (°C)
Pin/ Package
Price* (US$)
DAC7562/ 8162/ 8562
12/14/16-bit, dual, low-power, ultra-low glitch, buffered voltage output DAC with 2.5V, 4ppm/°C reference
12/14/16 2 12 0–5V 7 Buffered voltage Serial SPI Ext, Int –40 to 125 10/VSSOP,
10/WSON
2.50 / 3.85 / 4.20
DAC161S055 Precision 16-bit, buffered voltage-output DAC 16 1 3 +2.5V to VA 5 Buffered
voltage Serial SPI Ext –40 to 105 16/WQFN 2.95
DAC7716/ 8234/ 8734
12/14/16-bit quad high accuracy ±16.5V output digital-to-analog converter
12/14/16 4 4 –16.5V–33V 15 Buffered voltage Serial SPI Ext –40 to 105 48/VQFN,
64/TQFP
8.20 / 14.95 / 20.00
DAC7718/ 8218/ 8718
12/14/16-bit octal high accuracy ±16.5V output digital-to-analog converter
12/14/16 8 4 –16.5V–33V 15 Buffered voltage Serial SPI Ext –40 to 105 48/VQFN,
64/TQFP
8.95 / 13.45 / 16.45
DAC161P997/ S997
SPI 16-bit precision DAC for 4–20mA loops 16 1 9 4mA–20mA Current PCI/
Serial SPI Ext –40 to 105 16/WQFN 1.75
Analog Output Driver
Part Number DescriptionVs (Min)
(V)Vs (Max)
(V)Non-Linearity
(Max) (%)
Auxiliary Output Voltage
(V)Span Error (Max) (%)
Offset Voltage (±) (Max) (µV)
Offset Voltage Drift (±) (Max) (µV/°C)
Pin/ Package
Price* (US$)
XTR300 Industrial analog current/voltage output driver 10 40 0.1 17.5 0.12 1900 6 20/VQFN 1.90
XTR117 4-20mA current loop transmitter 7.5 40 0.02 5 0.4 50 6 8/SON, 8/VSSOP 0.90
*Suggested resale price in U.S. dollars in quantities of 1,000. New products are listed in bold red.
4 | Programmable Logic Control (PLC) Solution Guide 2013 Texas Instruments
Digital I/O
Digital input modules capture and measure digital input signals from a wide variety of sensors like proximity switches, limit switches and push button switches. Inputs typically are 0–24V with tolerances up to 30V. Digital input serializers can be used to serialize a large number of digital inputs allowing higher channel densities in PLC I/O modules.
LEGEND Logic
ADC/DACClocksOther
Power
RF/IF
ProcessorInterface
Amplifier
0 – 24 V±24V
DigitalInput
Serializer
Protection
Protection
Protection
Protection
24 V
DigitalIsolation
Controller Interface
Field InputsFrom Sensors
CommunicationFieldbus IN
CommunicationFieldbus OUT
Digital Serializers
Part Number Description # of Inputs Interface
I/O max rate
(kbps)
Operating Voltage
(V)
I/O Voltage
(V) Special FeaturesIO Current
(mA)
Operating Temperature Range (°C) Pin/Package
Price* (US$)
SN65HVS8818 input, wide 10–34V digital-input serializer with parity for industrial digital inputs
8 SPI 1000 10 to 34 0 to 34
Parity, Over temperature,
Cascadable, Drivers for external LEDs
0.2 to 5.2 –40 to 125 28/HTSSOP 2.00
SN65HVS880 8 input, nominal 24V digital-input serializer for industrial digital inputs 8 SPI 1000 18 to 30 0 to 30
Voltage monitor, Over temperature,
Cascadable, Drivers for external LEDs
0.2 to 5.2 –40 to 85 28/HTSSOP 1.90
Drivers
Part Number Description
Vs (Min) (V)
Vs (Max) (V)
Output Current (Min)
(A) Control I/F
Operating Temperature Range (°C) Pin/Package
Price* (US$)
DRV110 PWM solenoid controller 6 15 0.008 PWM –40 to 105 14/TSSOP, 8/TSSOP 1.00
DRV8844 5A brushed DC motor or quad 1.75A solenoid/relay driver with ±30V split supply support (PWM ctrl) 8 60 5 PWM –40 to 85 28/HTSSOP 2.50
DRV8860 The DRV8860 provides an 8-channel low-side driver with overcurrent protection and open/shorted load detection –0.3 40 0.15 Serial –40 to 85 16/TSSOP - PWP 1.25
DRV8806 2.0A unipolar stepper motor or 1A quad solenoid/relay driver with open-load detection (Serial ctrl) 8.2 40 2 Serial –40 to 85 16/HTSSOP 1.25
Connectivity & Interface
Connectivity options ranging from Ethernet ports to UARTs to simple SPI ports are required. Ethernet enables integration of field devices to the corpo-rate enterprise network. There are a
number of fieldbus options – both serial (RS-485, DeviceNet™, PROFIBUS®, CAN, etc.) and Ethernet based. Extended cable reach and diagnostics to debug wire breaks provides system designers
significant value. Integrated digital isola-tion on the interface transceivers is highly desirable to reduce board space.
Industrial Interface Transceivers
Part Number Description
Bus Fault Voltage
(V)
ICC (Max) (mA)
Number of Nodes Date Rate Duplex ESD
Supply Voltage(s)
(V)Special
Features
Operating Temperature Range (°C) Pin/Package
Price* (US$)
SN65HVD257
CAN transceiver with fast loop times for highly loaded networks and features for functional safety
–27 to 40 85 10kbps to 1Mbps Half ±12 kV HBM protection 4.5 to 5.5
High-speed, Turbo short prop delay, Redundancy
and functional safety–40 to 125 8/SOIC 0.60
SN65HVD888Bus-polarity correcting RS-485 transceiver with IEC-ESD protection
–18 to 18 0.9 256 300bps to 250kbps Half
±16 kV HBM protection, ±12 kV IEC61000-4-2
contact discharge, +4 kV IEC61000-4-4 fast
transient burst
4.5 to 5.5
Bus-polarity correction within 76ms (tFS),
Exceeds requirements of EIA-485 Standard
–40 to 85 8/SOIC 1.10
*Suggested resale price in U.S. dollars in quantities of 1,000. New products are listed in bold red. Preview products are listed in bold teal.
Texas Instruments Programmable Logic Control (PLC) Solution Guide 2013 | 5
LDO Linear Regulators
Part Number Description Output Options
Iout (Max)
(A)
Vin (Min) (V)
Vin (Max)
(V)
Vout (Min) (V)
Vout (Max)
(V)Iq (Typ)
(mA)
Vdo (Typ) (mV) Additional Features
Operating Temperature Range (°C)
Pin/Package
Price* (US$)
TPS7A4901Vin 3V to 36V, 150mA, ultra-low noise, high PSRR, low-dropout linear regulator
Adjustable output 0.15 3 36 1.2 33 0.06 260Over current protection,
Thermal shutdown, Enable, Soft start
–40 to 125 8/MSOP-PowerPAD 1.10
TPS7A3001Vin –3V to –36V, –200mA, ultra-low noise, high PSRR, low-dropout linear regulator
Adjustable output, Negative output 0.2 –3 –36 –1.18 –33 0.05 216
Soft start, Enable, Over current protection,
Thermal shutdown–40 to 125 8/MSOP-
PowerPAD 1.50
TLV700 200mA, Low IQ, Low dropout regulatorFixed 1.2V, 1.3V, 1.5V, 1.8V, 1.9V, 2.2V, 2.5V, 2.8V, 2.9V, 3.0V, 3.1V, 3.2V, 3.3V, 3.6V
0.2 2 5.5 Fixed outputs
Fixed outputs 0.03 175
Enable, Over current protection,
Thermal shutdown–40 to 125
5/SC-70, 5/SOT,
6/WSON0.13
TLV704 24V, 150mA, Ultra-low IQ, High Vin, Low-dropout regulator Fixed 3.0V, 3.3V, 3.6V, 5.0V 0.15 2.5 24 Fixed
outputsFixed
outputs 0.003 400Stable with any capacitor
(> 0.47 µF), Over current protection
–40 to 125 5/SOT 0.25
*Suggested resale price in U.S. dollars in quantities of 1,000. New products are listed in bold red.
Isolated Industrial Interface
Part Number Description
Integrated Transformer
Driver Duplex
Isolation Rating
(kVrms)
VCC1 (Min)
(V)
VCC1 (Max)
(V)
VCC2 (Min) (V)
VCC2 (Max)
(V)Datarate (Mbps)
Number of Nodes
ESD (kV) Fail Safe
Operating Temperature Range (°C) Pin/Package
Price* (US$)
ISO1176 Isolated PROFIBUS® RS-485 transceiver No Half 2.5 3.15 5.5 4.75 5.25 40 256 16 Idle, Open,
Short –40 to 85 16/SOIC 3.00
ISO1176TIsolated PROFIBUS transceiver with integrated transformer driver
Yes Half 2.5 3 5.5 4.75 5.25 40 256 10 Idle, Open, Short –40 to 85 16/SOIC 3.30
ISO1050 Isolated 5-V CAN transceivers No Half 2.5, 5 3 5.5 4.75 5.25 1 4 Idle, Open,
Short –55 to 105 16/SOIC, 8/SOP 1.55
Ethernet PHY
Part Number Description Interface
Cable Length
(m)LED (#)
Supply Voltage
(V)Datarate (Mbps) JTAG 1149.1
Port Count Special Features
Operating Temperature Range (°C) Pin/Package
Price* (US$)
TLK110 Industrial 10/100 Ethernet PHY MII, RMII 150 3 3.3 10/100 Yes Single
Deterministic delay, Programmable fast link
down modes, Cable diagnostics
–40 to 85 48/LQFP 2.20
TLK105Industrial temp, single-port 10/100Mbs Ethernet physical layer transceiver
MII, RMII 150 1 3.3 10/100 No SingleDeterministic delay,
Programmable fast link down modes
–40 to 85 32/VQFN 0.99
TLK105L
TLK105L, TLK106L industrial temp, single-port 10/100Mbs Ethernet physical layer
MII, RMII 150 2 3.3 10/100 No Single
Deterministic delay, Programmable fast link
down modes, Cable diagnostics, FX support
–40 to 85 32/VQFN Preview
TLK106Industrial temp, single-port 10/100Mbs Ethernet physical layer transceiver
MII, RMII 150 1 3.3 10/100 No Single
Deterministic delay, Programmable fast link
down modes, Cable diagnostics
–40 to 105 32VQFN 1.19
TLK106L
TLK105L, TLK106L industrial temp, single-port 10/100Mbs Ethernet physical layer
MII, RMII 150 2 3.3 10/100 No Single
Deterministic delay, Programmable fast link
down modes, Cable diagnostics, FX support
–40 to 105 32/VQFN Preview
PowerTo protect against transients and ground loops, the field side which interfaces to sensors is electrically isolated from the control side. The design can be custom-ized for perfor mance and cost by using a DC-DC converters. Finally, using LDOs with good PSRR (power supply rejec-tion ratio) to supply the precision analog circuitry will reduce the power supply ripple and preserve system accuracy and resolution.
DC/DC Converter Isolated Power DC/DC Converter
24 VCommunication
Fieldbus IN
Electrical Isolation
Field Side Control Backplane
Isolated Power
Power Management: Exists onAll Modules
Input Power Protection
Part Number Description
Vin (Min) (V)
Vin (Max) (V)
Current Limit Threshold (A) Enable Fault Response Special Features
Operating Temperature Range (°C) Pin/Package
Price* (US$)
LM5060 High-side protection controller with low quiescent current 5.5 65 Externally
adjustable Yes Latch off No External RSENSE –40 to 125 10/VSSOP 1.09
6 | Programmable Logic Control (PLC) Solution Guide 2013 Texas Instruments
DC-DC Converters
Part Number Description
Vin (Min)
(V)
Vin (Max)
(V)
Vout (Min)
(V)
Vout (Max)
(V)Iout (A) Topology
Switch Current
Limit (Typ) (A)
Iq (Typ) (mA)
Duty Cycle (Max) (%) Soft Start Compensation Special Features
Operating Temperature Range (°C)
Pin/Package
Price* (US$)
TPS550102.95V to 6V input, 2W, isolated DC/DC converter with integrated FETS
2.95 6 3.3 20 0.4 Fly-buck 2.75 0.575 Adjustable External
Enable, synchronous rectification, Isolated,
Power good, Frequency synchronization
–40 to 150 16/WQFN 0.99
TPS62150
3–17V 1A step-down converter with DCS-Control™ in 3×3 QFN package
3 17 0.9 6.3 1Buck,
Synchronous buck
1.7 0.017 100 Adjustable Internal
Enable, Light load efficiency, Power good,
Tracking, Voltage margining
–40 to 85 16/QFN 0.98
LMZ34002
4.5V– 40V input, up to 15W negative-output integrated power solution
4.5 40 –3 –17 2Boost,
Synchronous buck module
3 Adjustable External
Integrated inductor, EMI tested, Negative output, Soft start, Overcurrent
protection, Remote sense, External clock sync
–40 to 85 41/B1QFN 6.75
TPS40210 Wide input range current mode boost controller 4.5 52 5 260 6 Boost NA 1.5 95 Adjustable Internal Enable, frequency
synchronization –40 to 12510/MSOP-PowerPAD,
10/SON0.80
TPS54160A3.5V to 60V input, 1.5A step-down converter with Eco-Mode
3.5 60 0.8 58 1.5Buck,
Inverting buck-boost
1.8 0.116 98 Adjustable External
Enable, Frequency synchronization, Light load efficiency, Power
good, Tracking
–40 to 15010/MSOP-PowerPAD,
10/SON1.58
TPS540624.7V to 60V input, 50mA synchronous step-down converter
4.7 60 0.8 58 0.05
Buck, Inverting
buck-boost, Synchronous
buck
0.13 0.089 98 Fixed ExternalEnable, Frequency
synchronization, Light load efficiency
–40 to 125 8/SON, 8/VSSOP 0.88
TPS54362-Q1
Automotive catalog 3A, 60V step-down DC/DC converter with low Iq, voltage supervision and reset
3.6 60 0.9 18 3 Buck 6 0.065 90 Fixed External Enable, Power good –40 to 125 20/HTSSOP 2.80
LM5017100V, 600mA constant on-time synchronous buck regulator
9 100 1.25 90 0.6
Constant on-time
synchronous buck
1.3 1.75 90 ExternalNo
compensation needed
Intelligent current limit, primary-side fly-buck
regulation–40 to 125
8/SO PowerPAD, 8/WSON
1.57
Window Comparator
Part Number Description
Vs (Min)
(V)
Vs (Max)
(V)
tRESP Low-to-High
(µs)
Vos (Offset Voltage @
25°C) (Max) (mV)
Iq per Channel
(Max) (mA)Output Type
Input Bias Current
(±) (Max) (nA)
Number of Channels Special Features
Rail-Rail
Operating Temperature Range (°C)
Pin/Package
Price* (US$)
LMV762 Low voltage, precision comparator with push-pull output 2.7 5 0.12 1 0.7 Push-pull 0.005 2 –40 to 125 8/SOIC,
8/VSSOP 0.85
TPS3700High-voltage (18V) window comparator with over- and undervoltage detection
1.8 18 29 5.5 0.013 Open drain 25 1
Hysteresis, Internal reference, Window
comparatorIn –40 to 125 6/SOT,
6/WSON 0.70
*Suggested resale price in U.S. dollars in quantities of 1,000. New products are listed in bold red.
Embedded Processing Solutions for PLCDescription Device Series Key BenefitsSitara™ ARM® Cortex™-A8 processors with integrated industrial communications support
AM3359AM3517
• Integrated industrial communications support including: EtherCAT®, PROFIBUS®, EtherNet/IP™, PROFINET®, POWERLINK, SERCOS-III, CANOpen®, and more, with scalable performance
TMS570 ARM Cortex-R4F-based microcontroller for safety-critical applications up to 160 MHz and 2-MB Flash
TMS570LS2x • Support for safety-critical applications up to IEC 61508 SIL-3• Three integrated CAN controllers• Powerful Cortex-R4F floating-point CPU• Up to 2 MB of integrated Flash memory
RM4x ARM Cortex-R4-based microcontroller for safety-critical applications up to 220 MHz and 3-MB Flash
RM42xRM46xRM48x
• Support for safety-critical applications up to IEC 61508 SIL-3• Three integrated CAN controllers• Powerful Cortex-R4 CPU• From 384 KB up to 3 MB of integrated Flash memory
MSP430™ 16-bit ultra-low-lower microcontroller family. Up to 25 MHz, 0.5KB Ù 512KB NVM
MSP430F2xxxMSP430FR57xxxMSP430F5xxx/F6xxx
• Broad portfolio of –40 Ù 105°C devices• Innovative ULP FRAM non-volatile memory• 10 – 24-bit ADCs, op-amps and DACs
Tiva™ C Series ARM Cortex-M4 MCUs with up to 80 MHz and 256-kB Flash
TM4C123x • Up to 120 GPIOs that can drive over 600 mA• Up to 8 UARTs, 4 SPI, and 6 I2C• Two integrated CAN controllers and USB OTG
C2000™ 32-bit real-time MCUs up to 300 MHz, including dual-core C28x + ARM Cortex-M3 devices with up to 1.5 MB of Flash
C28x Piccolo™ MCUs C28x Delfino™ Floating-point MCUs C28x + ARM Cortex-M3 F28M3x MCUs
• IEC61131-3 programming with CoDeSys• Integrated real-time control peripherals coupled with integrated communications interfaces• Support for Power Line Communications standards
See next page for more information on Embedded Solutions.
Texas Instruments Programmable Logic Control (PLC) Solution Guide 2013 | 7
SLYY041
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www.ti.com/automation 2013
Programmable Logic Control (PLC) Solution Guide
Industrial Automation Solutions
Embedded Processing Solutions for PLC
To support the processor, development platforms and software tools in addi-tion to support which quickens time to market are highly desired. Most indus-trial control applications need simple, low-cost PLCs with lots of digital I/O and integrated functions. These include fault
diagnostics, watch dog timers, low power, multiple SPI ports, UARTs, integrated analog peripherals like ADCs and PWM outputs which perform similar functions to DACs. MCUs (Micro Controller Units) are a good choice for these applications. For applications which push capabilities
and need higher loop rates along with advanced control algorithms to handle multiple functional domains like logic, PID control and motion, higher-perfor-mance MPUs (Micro Processing Units) are needed.
Motion Expertise On-Chip with Piccolo™ TMS320F2806xM High-Performance Real-Time Microcontrollers – Enabled with InstaSPIN™-MOTION
• Motor parameter and inertia identification
• Automatic torque loop FOC tuning
• Single variable control tuning of combined position and speed
• On-chip trajectory generation, including continuous proprietary low-jerk st-curve
• State-based logic control planning
Learn more: www.ti.com/instaspin-motion See recommended Processors and Microcontrollers on page 7.
See more TI Programmable Logic Control (PLC) Solutions at www.ti.com/automation
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