参考设计
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TIDA-00912 Shunt-Based High Current Measurement (200-A) Reference Design with Reinforced Isolation Amplifier | TI.com
TIDA-00912: The TIDA-00912 TI Design provides a complete reference solution for isolated current measurement using external shunts, reinforced isolation amplifiers, and isolated power supply. The shunt voltage is limited to 25 mV max. This reduces power dissipation in the shunt to enable a high current measurement range up to 200 A. Shunt voltage is amplified by a instrumentation amplifier configuration with a gain of 10 to match the input range of isolation amplifier for better signal to noise ratio. The output of isolation amplifier is level shifted and scaled to fit the complete input range of 3.3-V ADCs. This design uses free running transformer driver operating at 410 kHz for generating isolated supply voltage in a small form factor to power high voltage side of the circuit.
Isolated Auto-Polarity RS-485 Transceiver Reference Design
TIDA-00263: This reference design demonstrates an isolated RS-485 bus node with automatic correction of a reversed bus signal polarity caused by cross-wire faults. The design provides transient protection protecting the signal path against ESD, EFT, and surge transients specified in the IEC 61000 family of transient immunity standards. An isolated DC-DC converter provides power supply across the isolation barrier utilizing the push-pull converter principle.
Soft-Start Isolated Power Supply Reference Design
TIDA-00326: This reference design demonstrates a Soft-Start Isolated Power Supply. It utilizes a TPS22965 Load-Switch and SN6501 Transformer Driver to slew-rate limit the ramp-up power on the primary supply, and utilizes a Transformer plus a full-wave rectifier to generate the isolated secondary power.
Isolated Current & Voltage Measurement Using Fully Differential Isolation Amplifier Reference Design
TIDA-00555: The TIDA-00555 TI Design demonstrates using of AMC1100, a fully differential isolation amplifier, as an analog front end to measure voltage and current. It demonstrates measurement of voltage inputs in an input-to-output isolation configuration and current inputs in a channel-to-channel isolation configuration. Also it includes power isolation, which makes it a complete subsystem for measuring isolated voltages and currents. This AFE can be used in applications that require replacing current transformers (CTs) with shunts. Shunts and potential dividers are provided onboard to directly connect current and voltage inputs.
TIPD165 Isolated, Shunt-Based Current Sensing Reference Design | TI.com
TIPD165: This Verified TI Design implements an isolated current sensing data acqusition solution based on the AMC1304M25 isolated delta-sigma (ΔΣ) modulator and a TMS320F28377D microcontroller. This circuit was designed for shunt-based current measurement applications which require excellent galvanic isolation and accuracy, such as industrial motor drives, photovoltaic inverters, and energy metering. It is capable of measuring load currents from -10 A to +10 A with better than 0.3% uncalibrated accuracy, and it also provides dual functionality of a high resolution channel and an additional over-current or short-circuit detection channel. The design’s functionality and performance were verified against the circuit design goals by fabricating three PCBs and measuring results for dc and ac input signals.
TIDA-00004 Isolated Power Supplies Reference Design | TI.com
TIDA-00004: This reference design demonstrates how to create a 3.3V or 5V isolated power supply for isolated RS-485, CAN or similar applications. There are five separate supplies on the board for different cases of input and output voltage, with and without regulated outputs.
Multi-phase Energy Measurement with Isolated Shunt Sensors Reference Design
TIDA-00601: The TIDA-00601 design implements a Class 0.5% three-phase energy measurement system with isolated shunt sensors. The isolation is achieved through the use of isolated delta-sigma modulators that have output circuitry capacitively isolated from input circuitry. An energy measurement SoC takes the different bit-streams from the isolated modulators and uses its on-board digital filters to produce ADC sample readings. The energy measurement SoC is also used for sensing voltages, calculating metrology parameter values, driving the board’s LCD, and communication to a PC GUI via the board’s isolated RS-232 circuitry. This reference design uses the ISO7420 and ISO7421. This reference design can also be used with the ISO7320C and ISO7321C. This reference design uses the AMC1304M05. This reference design can also be used with the AMC1304M25. This reference design uses the MSP430F67641. This reference design can also be used with the MSP430F67641A.
TIDA-00835 High Accuracy ±0.5% Current and Isolated Voltage Measurement Ref Design Using 24-Bit Delta-Sigma ADC | TI.com
TIDA-00835: The TIDA-00835 reference design allows for accurate voltage and current measurement using a bipolar input configuration by incorporating a four- channel, 24-bit simultaneously-sampling differential input Delta-Sigma ADC over wide dynamic range. The ADC is configured to measure ±2.5 V bipolar input. The inputs are scaled to ADC measurement range of ±2.5V using a fixed gain amplifier. This AFE chains two ADCs together using a common external clock to expand the number of input channels to eight while simultaneously sampling all of the input channels. By having more measurement channels per module, overall system cost is reduced.
Dual Isolated Half-Duplex RS-485 Repeater Reference Design
TIDA-00333: This reference design demonstrates a dual isolated, half-duplex repeater with data rate independent flow-control for long-haul RS-485 networks suitable for industrial applications. The design provides transient protection protecting the signal path against ESD, EFT, and surge transients specified in the IEC 61000 family of transient immunity standards.
TIPD121 Isolated Current Sensing Reference Design Solution, 5A, 2kV | TI.com
TIPD121: This TI Precision Reference Design provides a user-side solution for providing power to the hot side of an isolated current shunt monitor. The first step in creating an isolated current sense solution, is to provide power to the primary side of the sensor. This reference design will go through the steps in selecting a transformer, rectifying diodes and filter components necessary for providing a low cost 'off the shelf' solution to a common problem. See more TI Precision Designs
TIDA-00785 Isolated GaN Driver Reference Design | TI.com
TIDA-00785: This reference design consists of a reinforced dualchannel digital isolator, a GaN gate driver, and isolated power supplies. This compact reference design is intended to control GaN in power supplies, DC-to-DC converters, synchronous rectification, solar inverters, and motor control. An open-loop push-pull topology based power supply for gate drivers provides flexibility in PCB routing. The pushpull transformer driver used in the TIDA-00785 operates at 300 kHz, which helps in reducing the size of the isolation transformer, leading to a compact power supply solution.
8 Channel 1A/Ch High Side Driver for Programmable Logic Controller (PLC) Reference Design
TIDA-00183: The TIDA-00183 shows a high density, high power digital output circuitry with full protection and isolation for programmable logic controllers in factory automation and control environment. The BeagleBone-Black cape formfactor allows easy evaluation of the used driver chips and the interoperation with an MSP430 MCU for innovative protection schemes.
Shunt-Based AC/DC Current and Voltage Sensing for Smart Grid Applications with Reinforced Isolation
TIDA-00080: This isolated shunt based current measurement unit enables high accuracy current measurement without the use of Current Transformers (CT). The isolation is achieved through the use of AMC1304 that incorporates both high voltage isolation as well as the Delta-Sigma Modulator. This solution eliminates the need for the CT which customers value due to the decrease in board size, reduced product weight, mitigation of cross talk and EMI in the system, and potentially increases product life through lower mechanical issues by replacing the CT with a shunt.
TIDA-00326 Soft-Start Isolated Power Supply Reference Design | TI.com
TIDA-00326: This reference design demonstrates a Soft-Start Isolated Power Supply. It utilizes a TPS22965 Load-Switch and SN6501 Transformer Driver to slew-rate limit the ramp-up power on the primary supply, and utilizes a Transformer plus a full-wave rectifier to generate the isolated secondary power.
TIDA-00308 Small Form Factor, Half-Duplex With Isolated & Non-Isolated RS485 Interface Reference Design | TI.com
TIDA-00308: RS485 (Isolated, Non-isolated) is a popular interface for the Grid Infrastructure space, and is one of the most important options on newly designed equipment. TIDA-00308 will enable customers to quickly evaluate and design with TI RS485 devices for 3 different application scenarios, with an isolated power supply provided in this design. Additionally, test results in the user’s guide will demonstrate the IEC61000-4-2 ESD and IEC61000-4-5 surge tests performed on this design.
TIDA-00319 High Speed Digital Output PLC Module Reference Design | TI.com
TIDA-00319: This high speed digital output module TI Design for programmable logic controllers (PLCs) illustrates the design of low-cost, simple high speed single-ended digital output module using standard low side driver and backplane powered using isolated power stage. High speed digital output modules are required for motor control and positioning application.
Digitally Isolated 2-Channel, Wide AC/DC Binary Input Module Reference Design
TIDA-00490: This reference design enables translation of wide range AC and DC voltage inputs up to 276V into binary logic level voltages that a typical electronic circuit can handle. This solution is flexible, not only handling input voltages from 15V to 276V but also allowing programmable switching thresholds to set binary levels. In addition, this solution enables < ± 3.0% (± 1V measured value step size) error in voltage detection coupled with reliable isolation > 2 kV RMS.
Polarity Correcting Isolated CAN Reference Design
TIDA-00267: A ready to use design that efficiently solves the problem of improper installation by adding antiparallel communication channels and appropriate control signal to enable polarity correction for the Controller Area Network (CAN) bus.
Reinforced Isolated M-LVDS Transceiver Reference Design
TIDA-00330: This reference design demonstrates the performance of a reinforced, isolated, full-duplex M-LVDS transceiver node using the ISO7842 and SN65MLVD203. A single reinforced digital isolator replaces two basic digital isolators, reducing cost and PCB area.
TIDA-00171 Isolated Current Shunt and Voltage Measurement Reference Design for Motor Drives | TI.com
TIDA-00171: This evaluation kit and reference design implements the AMC130x reinforced isolated delta-sigma modulators along with integrated Sinc filters in the C2000™ TMS320F28377D Delfino™ microcontroller. The design provides an ability to evaluate the performance of these measurements: three motor currents, three inverter voltages and the DC Link voltage. Provided in the kit is firmware to configure the Sinc filters, set the PLL frequency and receive data from Sinc filters. A versatile run-time GUI is also provided to help the user validate the AMC130x performance and supports configuration changes to Sinc filter parameters in the Delfino controller.
Isolated IGBT Gate Driver Evaluation Platform for 3-Phase Inverter System Reference Design
TIDA-00195: The TIDA-00195 reference design consists of a 22kW power stage with TI’s new reinforced isolated IGBT gate driver ISO5852S intended for motor control in various applications. This design allows performance evaluation of the ISO5852S in 3-phase inverter incorporating 1200V rated IGBT modules of current ratings ranging from 50A-200A. Some of the important functionality and performance evaluated are short circuit protection using DESAT detection, Soft-shutdown, effectiveness of the Active Miller Clamp at different inverter dv/dt, and ESD/EFT performance of IGBT gate driver at system level derived from adjustable speed electrical power drive systems (IEC61800-3). Piccolo launch pad LAUNCHXL-F28027 is used to generate the PWM signals required for controlling the inverter.
Isolated Current Shunt and Voltage Measurement Reference Design for Motor Drives
TIDA-00171: This evaluation kit and reference design implements the AMC130x reinforced isolated delta-sigma modulators along with integrated Sinc filters in the C2000™ TMS320F28377D Delfino™ microcontroller. The design provides an ability to evaluate the performance of these measurements: three motor currents, three inverter voltages and the DC Link voltage. Provided in the kit is firmware to configure the Sinc filters, set the PLL frequency and receive data from Sinc filters. A versatile run-time GUI is also provided to help the user validate the AMC130x performance and supports configuration changes to Sinc filter parameters in the Delfino controller.
TIDA-00263 Isolated Auto-Polarity RS-485 Transceiver Reference Design | TI.com
TIDA-00263: This reference design demonstrates an isolated RS-485 bus node with automatic correction of a reversed bus signal polarity caused by cross-wire faults. The design provides transient protection protecting the signal path against ESD, EFT, and surge transients specified in the IEC 61000 family of transient immunity standards. An isolated DC-DC converter provides power supply across the isolation barrier utilizing the push-pull converter principle.
TIDA-00557 RS-232 Modem Interface Module for Protection Relay, IED, and Substation Automation Reference Design | TI.com
TIDA-00557: The TIDA-00557 reference design provides an interface for a true RS-232 (eight signal + ground) physical layer interface for data terminal equipment (DTE) using a DB-9 plug-type connector with a provision for a data communication equipment (DCE) interface. This is intended for smart grid IED’s, protection relays and substation automation segments. This design meets +-/ 8kV contact discharge ESD protection as per IEC61000-4-2 and +/-1kV surge protection as per IEC61000-4-5.
Small Form Factor, Half-Duplex With Isolated & Non-Isolated RS485 Interface Reference Design
TIDA-00308: RS485 (Isolated, Non-isolated) is a popular interface for the Grid Infrastructure space, and is one of the most important options on newly designed equipment. TIDA-00308 will enable customers to quickly evaluate and design with TI RS485 devices for 3 different application scenarios, with an isolated power supply provided in this design. Additionally, test results in the user’s guide will demonstrate the IEC61000-4-2 ESD and IEC61000-4-5 surge tests performed on this design.
TIDA-00810 Reference Design to Measure AC Voltage & Current in Protection Relays w/Delta-Sigma Chip Diagnostics | TI.com
TIDA-00810: The TIDA-00810 reference design accurately measures analog inputs performance and includes chip diagnostics to help identify power systems failures early by using a highly accuracy AC voltage and current measurement analog front end (AFE) and a four-channel, 24-bit simultaneously-sampling differential input Delta-Sigma ADC for measurement over wide dynamic range. The ADC is configured to measure 0-5 V unipolar. The inputs are scaled to ADC measurement range using a fixed gain amplifier with 2.5 V DC output level shift. The AFE can be used to measure output of a current transformer, potential divider with analog isolation and Rogowski active integrator. The AFE uses 10-Bit low resolution successive approximation register (SAR) ADC in parallel with a 24 bit ∑-∆ ADC for ADS131A04 diagnostics.
TIDA-00080 Shunt-Based AC/DC Current and Voltage Sensing for Smart Grid Applications with Reinforced Isolation | TI.com
TIDA-00080: This isolated shunt based current measurement unit enables high accuracy current measurement without the use of Current Transformers (CT). The isolation is achieved through the use of AMC1304 that incorporates both high voltage isolation as well as the Delta-Sigma Modulator. This solution eliminates the need for the CT which customers value due to the decrease in board size, reduced product weight, mitigation of cross talk and EMI in the system, and potentially increases product life through lower mechanical issues by replacing the CT with a shunt.
TIDA-01037 20-bit, 1-MSPS Isolator Optimized Data Acquisition Reference Design Maximizing SNR and Sample Rate | TI.com
TIDA-01037: TIDA-01037 is a 20-bit, 1 MSPS isolated analog input data acquisition reference design that utilizes two different isolator devices to maximize signal chain SNR and sample rate performance. For signals requiring low jitter, such as ADC sampling clocks, TI’s ISO73xx family of low jitter devices are used whereas TI’s high speed ISO78xx family of devices are used to maximize data sample rate. By combing these two isolator solutions, high frequency performance is significantly improved by minimizing sample clock jitter across the isolation boundary, and data throughput is improved by maximizing isolator signaling rate. Additional improvements are realized by utilizing TI’s advanced ADC multiSPITM and source-synchronous features. Finally, all key design theories are described and measured results presented.
TIDA-01088 Multi-Phase Power Quality Measurement with Isolated Shunt Sensors Reference Design | TI.com
TIDA-01088: The TIDA-01088 reference design implements power quality parameter measurement in a polyphase energy measurement system. Total harmonic distortion (THD), fundamental readings, and standard metrology parameters such as active and reactive energy and power are calculated. Phase to phase angles are also calculated to help prevent incorrect installation of the system. This design uses isolated shunt current sensors to maintain accuracy in harmonic analysis and also immunity from magnetic tamper attacks.
TIDA-00738 Extended Current and Voltage Measurement Using Shunts for Protection Relays Reference Design | TI.com
TIDA-00738: The TIDA-00738 TI design demonstrates a unique approach for extending the current measurement range using a single shunt and voltage measurement using AMC1304Mx5 Isolated Delta-Sigma (ΔΣ) modulator. With careful selection of a low value shunt resistor that minimizes power dissipation, a front end amplifier with low noise and by introducing two gain paths, both upper and lower current limit is extended. Accuracy of < ±0.5 % for both current and voltage measurement is achieved by interfacing the modulator output to AM437x host processor which performs the Sinc3 filtering.
Isolated, Shunt-Based Current Sensing Reference Design
TIPD165: This Verified TI Design implements an isolated current sensing data acqusition solution based on the AMC1304M25 isolated delta-sigma (ΔΣ) modulator and a TMS320F28377D microcontroller. This circuit was designed for shunt-based current measurement applications which require excellent galvanic isolation and accuracy, such as industrial motor drives, photovoltaic inverters, and energy metering. It is capable of measuring load currents from -10 A to +10 A with better than 0.3% uncalibrated accuracy, and it also provides dual functionality of a high resolution channel and an additional over-current or short-circuit detection channel. The design’s functionality and performance were verified against the circuit design goals by fabricating three PCBs and measuring results for dc and ac input signals.
Isolated Current Sensing Reference Design Solution, 5A, 2kV
TIPD121: This TI Precision Reference Design provides a user-side solution for providing power to the hot side of an isolated current shunt monitor. The first step in creating an isolated current sense solution, is to provide power to the primary side of the sensor. This reference design will go through the steps in selecting a transformer, rectifying diodes and filter components necessary for providing a low cost 'off the shelf' solution to a common problem. See more TI Precision Designs
TIDA-00106 16-Bit 1-MSPS Data Acquisition Reference Design, Isolated for High-Voltage Common-Mode Rejection | TI.com
TIDA-00106: The circuit represents a high-performance data acquisition (DAQ) solution suitable for processing input signals (up to ±12 V) superimposed on large common-mode offsets (tested up to 155 Vp-p from dc to approximately 15 kHz) relative to the ground potential of the system's main power supply. Common-mode rejection is achieved by generating an isolated power supply to allow the analog signal chain to float with the input common-mode signal. The analog signal chain consists of a high-performance, 16-bit, 1-MSPS SAR ADC with an integrated analog front end (AFE) that offers high input impedance and a wide ±12-V input voltage range. Relevant application areas include PLC analog input modules with channel-to-channel isolation, automotive battery pack monitoring, power monitoring in AC motor drives and thermocouple measurements.
Isolated Current Shunt and Voltage Measurement Reference Design for Motor Drives Using AM437x
TIDA-00209: This reference design uses the AMC130x reinforced isolated delta-sigma modulators along with AM437x Sitara™ ARM® Cortex® -A9 Processor, which implements Sinc filters on PRU-ICSS. The design provides an ability to evaluate the performance of these measurements: three motor currents, three inverter voltages, and the DC Link voltage. Provided in the reference design is firmware to configure the Sinc filters, set the modulator frequency, and receive data from Sinc filters. A versatile run-time GUI is also provided to help the user validate the AMC130x performance and supports configuration changes to Sinc filter parameters in the Sitara™ Processor.
TIDA-00333 Dual Isolated Half-Duplex RS-485 Repeater Reference Design | TI.com
TIDA-00333: This reference design demonstrates a dual isolated, half-duplex repeater with data rate independent flow-control for long-haul RS-485 networks suitable for industrial applications. The design provides transient protection protecting the signal path against ESD, EFT, and surge transients specified in the IEC 61000 family of transient immunity standards.
Digitally Isolated 2-Channel, Wide DC Binary Input Module Reference Design
TIDA-00420: This reference design enables translation of high DC voltage inputs upto 300VDC into binary logic level voltages that a typical electronic circuit can handle. This solution is very flexible, not only handling input voltages from 18 to 300VDC but also allowing programmable switching thresholds to set binary levels. In addition, this solution enables < ± 3.0% (± 1V measured value step size) error in voltage detection coupled with reliable isolation > 2kV RMS.
Isolated Power Supplies Reference Design
TIDA-00004: This reference design demonstrates how to create a 3.3V or 5V isolated power supply for isolated RS-485, CAN or similar applications. There are five separate supplies on the board for different cases of input and output voltage, with and without regulated outputs.
TIDA-00420 Digitally Isolated 2-Channel, Wide DC Binary Input Module Reference Design | TI.com
TIDA-00420: This reference design enables translation of high DC voltage inputs upto 300VDC into binary logic level voltages that a typical electronic circuit can handle. This solution is very flexible, not only handling input voltages from 18 to 300VDC but also allowing programmable switching thresholds to set binary levels. In addition, this solution enables < ± 3.0% (± 1V measured value step size) error in voltage detection coupled with reliable isolation > 2kV RMS.
TIDA-00809 EMC Compliant, Group Isolated, 2-Channel Binary Input Module for Wide AC/DC Input Reference Design | TI.com
TIDA-00809: The TIDA-00809 TI design showcases a cost optimized architecture that improves resolution of a binary input module. A microcontroller unit (MCU) is shared between two input channels (group isolation) to minimize the cost per channel. Wide input range is covered using an amplifier with gain and a MCU integrated 10-bit analog-to-digital converter (ADC) to measure with in ±3% accuracy. This architecture eliminates the need for multiple hardware versions based on input voltage range as is the case with an opto-coupler based topology. A digital isolator is used to communicate the ADC code or the root-mean-square estimate of the input to the host processor. The design is tested for ESD, EFT and Surge as per IEC61000-4 Level 4.
TIDA-00209 Isolated Current Shunt and Voltage Measurement Reference Design for Motor Drives Using AM437x | TI.com
TIDA-00209: This reference design uses the AMC130x reinforced isolated delta-sigma modulators along with AM437x Sitara™ ARM® Cortex® -A9 Processor, which implements Sinc filters on PRU-ICSS. The design provides an ability to evaluate the performance of these measurements: three motor currents, three inverter voltages, and the DC Link voltage. Provided in the reference design is firmware to configure the Sinc filters, set the modulator frequency, and receive data from Sinc filters. A versatile run-time GUI is also provided to help the user validate the AMC130x performance and supports configuration changes to Sinc filter parameters in the Sitara™ Processor.
TIDA-00555 Isolated Current & Voltage Measurement Using Fully Differential Isolation Amplifier Reference Design | TI.com
TIDA-00555: The TIDA-00555 TI Design demonstrates using of AMC1100, a fully differential isolation amplifier, as an analog front end to measure voltage and current. It demonstrates measurement of voltage inputs in an input-to-output isolation configuration and current inputs in a channel-to-channel isolation configuration. Also it includes power isolation, which makes it a complete subsystem for measuring isolated voltages and currents. This AFE can be used in applications that require replacing current transformers (CTs) with shunts. Shunts and potential dividers are provided onboard to directly connect current and voltage inputs.
RS-232 Modem Interface Module for Protection Relay, IED, and Substation Automation Reference Design
TIDA-00557: The TIDA-00557 reference design provides an interface for a true RS-232 (eight signal + ground) physical layer interface for data terminal equipment (DTE) using a DB-9 plug-type connector with a provision for a data communication equipment (DCE) interface. This is intended for smart grid IED’s, protection relays and substation automation segments. This design meets +-/ 8kV contact discharge ESD protection as per IEC61000-4-2 and +/-1kV surge protection as per IEC61000-4-5.
TIDA-00548 4-20mA Analog Input Module Reference Design for Safety Applications | TI.com
TIDA-00548: The TIDA-00548 design is an isolated dual-channel 4- to 20-mA analog input reference design, which can be used as a sub-part for functional safety programmable logic controllers (PLC). This reference design delivers digitized input values using a 32-bit high-performance analog-to-digital converter (ADC). The RM4x dual-core ARM® Cortex®-R4 based CPU with lockstep technology and built-in self-tests (BIST) compares the converted values of up to nine selectable analog input signal chain paths. The dual input approach with two separate burden resistors allows redundant measurement of either a single 4- to 20-mA loop or two independent loops. Hercules™ RM ARM Cortex-R based MCUs for functional safety applications (part of the SafeTI designs packages) help to develop systems according to IEC 61508 SIL 3.
TIDA-00601 Multi-phase Energy Measurement with Isolated Shunt Sensors Reference Design | TI.com
TIDA-00601: The TIDA-00601 design implements a Class 0.5% three-phase energy measurement system with isolated shunt sensors. The isolation is achieved through the use of isolated delta-sigma modulators that have output circuitry capacitively isolated from input circuitry. An energy measurement SoC takes the different bit-streams from the isolated modulators and uses its on-board digital filters to produce ADC sample readings. The energy measurement SoC is also used for sensing voltages, calculating metrology parameter values, driving the board’s LCD, and communication to a PC GUI via the board’s isolated RS-232 circuitry. This reference design uses the ISO7420 and ISO7421. This reference design can also be used with the ISO7320C and ISO7321C. This reference design uses the AMC1304M05. This reference design can also be used with the AMC1304M25. This reference design uses the MSP430F67641. This reference design can also be used with the MSP430F67641A.
TIDA-00195 Isolated IGBT Gate Driver Evaluation Platform for 3-Phase Inverter System Reference Design | TI.com
TIDA-00195: The TIDA-00195 reference design consists of a 22kW power stage with TI’s new reinforced isolated IGBT gate driver ISO5852S intended for motor control in various applications. This design allows performance evaluation of the ISO5852S in 3-phase inverter incorporating 1200V rated IGBT modules of current ratings ranging from 50A-200A. Some of the important functionality and performance evaluated are short circuit protection using DESAT detection, Soft-shutdown, effectiveness of the Active Miller Clamp at different inverter dv/dt, and ESD/EFT performance of IGBT gate driver at system level derived from adjustable speed electrical power drive systems (IEC61800-3). Piccolo launch pad LAUNCHXL-F28027 is used to generate the PWM signals required for controlling the inverter.
TIDA-00445 Shunt-Based 200A Peak Current Measurement Reference Design Using Isolation Amplifier | TI.com
TIDA-00445: The TIDA-00445 TI design provides a reference solution for isolated current measurement using shunt and isolated amplifier. By limiting the shunt voltage to 25mV, this design is able to reduce power dissipation in the shunt and achieves a high current measurement range of up to 200A. Shunt voltage is further amplified by precision Opamps in instrumentation amplifier based configuration with a gain of 10 to match the input range of isolation amplifier. The output of isolation amplifier is level shifted and scaled to utilize the complete input range of 3.3v ADC. This design uses free running transformer driver for generating isolated supply voltage for the high voltage side of the circuit. Small form factor for the power supply is achieved by the operation of driver at 400 KHz.
