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SN6501

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Low-noise, 350-mA, 410-kHz transformer driver for isolated power supplies

Data sheet
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Low-noise, 350-mA, 410-kHz transformer driver for isolated power supplies

SN6501

ACTIVE
Data sheet Order now

Product details

Parameters

Rating Catalog Iout (A) 0.25 Vout (Max) (V) 11 Vin (Min) (V) 3 Vin (Max) (V) 5.5 Soft start No Operating temperature range (C) -40 to 125 Iout (Max) (A) 0.5 Switching frequency (Min) (kHz) 410 Switching frequency (Max) (kHz) 620 Vout (Min) (V) 0 Switch current limit (Typ) (A) 0.5 open-in-new Find other Transformer drivers

Package | Pins | Size

SOT-23 (DBV) 5 5 mm² 2.9 x 1.6 open-in-new Find other Transformer drivers

Features

  • Push-pull driver for small transformers
  • Single 3.3-V or 5-V supply
  • High primary-side current drive:
    • 5-V Supply: 350 mA (Max)
    • 3.3-V Supply: 150 mA (Max)
  • Low ripple on rectified output permits small output capacitors
  • Small 5-Pin SOT-23 Package

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Description

The SN6501 is a monolithic oscillator/power-driver, specifically designed for small form factor, isolated power supplies in isolated interface applications. The device drives a low-profile, center-tapped transformer primary from a 3.3-V or 5-V DC power supply. The secondary can be wound to provide any isolated voltage based on transformer turns ratio.

The SN6501 consists of an oscillator followed by a gate drive circuit that provides the complementary output signals to drive the ground referenced N-channel power switches. The internal logic ensures break-before-make action between the two switches.

The SN6501 is available in a small SOT-23 (5) package, and is specified for operation at temperatures from –40°C to 125°C.

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Technical documentation

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Type Title Date
* Datasheet SN6501 Transformer Driver for Isolated Power Supplies datasheet (Rev. H) Apr. 18, 2019
Application notes How to Isolate Signal and Power in Isolated CAN Systems (Rev. A) Apr. 06, 2020
Technical articles What the DIN VDE V 0884-11:2017-01 standard means for your isolated designs Feb. 27, 2020
Technical articles Isolation 101: How to find the right isolation solution for your application Feb. 11, 2020
Technical articles Why signal isolation matters in 48-V HEV/EV systems Nov. 20, 2019
Technical articles Optocouplers and silicon-based galvanic isolation technology – how do they work? Oct. 28, 2019
Application notes Isolated RS-485 Transceiver Reference Design May 10, 2019
Application notes Signal and Power Isolation with 3.3 V / 5 V Input and 12 V / 15 V Output Oct. 17, 2018
Application notes How to isolate signal and power for an RS-485 system (Rev. B) Oct. 16, 2018
Application notes Data-rate independent half-duplex repeater design for RS-485 (Rev. A) Oct. 02, 2018
Application notes How to isolate signal and power for I2C (Rev. A) Oct. 02, 2018
Application notes Isolated CAN solution by using ISO1050 and SN6501 (Rev. A) Aug. 03, 2018
User guides AMC1311EVM User's Guide Nov. 13, 2017
User guides SN6501 Multi-Transformer EVM User's Guide Nov. 12, 2012

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Hardware development

EVALUATION BOARDS Download
document-generic User guide
$49.00
Description

The AMC1300 evaluation module (EVM) is a platform for evaluating the AMC1300, which is a 7-kV reinforced isolation amplifier designed for use in current shunt measuring applications. AMC1300EVM allows the user to explore all the features of the AMC1300 device.

Features
  • Reinforced isolation amplifier: 7-kV peak, 10-kV surge
  • Fixed gain of 8.2
  • ±250-mV input range
  • Low gain error and drift
  • Extended industrial temperature range
View details
EVALUATION BOARDS Download
document-generic User guide
$49.00
Description

The AMC1302 evaluation module (EVM) is a platform for evaluating the AMC1302, which is a 7-kV reinforced isolation amplifier designed for use in current shunt measuring applications. AMC1302EVM allows the user to explore all the features of the AMC1302 device.

Features
  • Reinforced isolation amplifier: 7-kV peak, 10-kV surge
  • Fixed gain of 41
  • ±50-mV input range
  • Low gain error and drift
  • Extended industrial temperature range
View details
EVALUATION BOARDS Download
document-generic User guide
$49.00
Description
The AMC1303 devices are 1-bit modulators with an output buffer separated from the input interface circuitry by a silicon dioxide (SiO2) isolation barrier. The isolation barrier provides galvanic isolation of up to 8000 VPEAK. When used in combination with an FPGA or other digital filter, AMC1303 (...)
Features
  • Full-featured evaluation board for the AMC1303 single-channel delta-sigma modulators
  • Configurable AVDD and DVDD power supplies
  • Screw terminals for easy access to analog inputs and digital outputs
View details
EVALUATION BOARDS Download
document-generic User guide
$49.00
Description
The AMC1306 devices are 1-bit modulators with an output buffer separated from the input interface circuitry by a silicon dioxide (SiO2) isolation barrier. The isolation barrier provides galvanic isolation of up to 8000 VPEAK. When used in combination with an FPGA or other digital filter, AMC1306 (...)
Features
  • Full-featured evaluation board for the AMC1306 single-channel delta-sigma modulators
  • Configurable AVDD and DVDD power supplies
  • Screw terminals for easy access to analog inputs and digital outputs
View details
EVALUATION BOARDS Download
document-generic User guide
$49.00
Description

The AMC1311 device is a high-voltage isolation amplifier with a differential output separated from the input interface circuitry by a silicon dioxide (SiO2) isolation barrier. The isolation barrier provides galvanic isolation of up to 7000 VPEAK.  When used in combination with TLV6001, the (...)

Features
  • Full-featured evaluation board for AMC1311 single-channel isolation amplifier
  • Single-ended output option
  • Screw terminals for easy access to analog inputs and outputs
  • Configurable AVDD and DVDD power supplies
View details
EVALUATION BOARDS Download
document-generic User guide
$49.00
Description

The AMC1336 evaluation module (EVM) is a platform for evaluating the AMC1336 device, which is a reinforced isolated delta-sigma modulator for voltage sensing. AMC1336 is a 1-bit modulator with an output buffer separated from the input interface circuitry by a silicon dioxide (SiO2 (...)

Features
  • Full-featured evaluation board for AMC1336 single-channel delta-sigma modulator
  • Configurable AVDD and DVDD power supplies
  • Screw terminals for easy access to analog inputs and digital outputs
View details
EVALUATION BOARDS Download
document-generic User guide
$49.00
Description

The ISO224 evaluation module (EVM) is an evaluation platform for ISO224, which is a 7-kV reinforced isolation amplifier designed for use in voltage-measuring applications. ISO224EVM allows the user to explore all the features of the ISO224 device. ISO224EVM also features a bipolar and (...)

Features
  • Reinforced isolation amplifier: 7-kV peak, 10-kV surge
  • Fixed gain of 0.25
  • ±12-V input range
  • Low gain error and drift
  • Extended industrial temperature range
View details
EVALUATION BOARDS Download
document-generic User guide
$49.00
Description

The SN6501-Multi-Xfmr EVM is configured with five independent circuits providing options to operate using either a +3.3Vdc or +5.0Vdc input and provides isolated 3.3Vdc or 5.0Vdc outputs. Two of the circuits include LDO's to regulate the output. The five configurations include 3Vdc-to-3Vdc with no (...)

Features
  • Push-Pull Driver for Small Transformers
  • Single 3.3V or 5V Supply
  • High Primary-side Current Drive
  • Low Ripple on Rectified Output
View details
DAUGHTER CARDS Download
document-generic User guide
Description

The MSP-ISO Isolation board is an easy-to-use plug-in module that offers galvanic isolation between the Debug and Target circuits for MSP430 LaunchPad developers. This is important in cases where the debug circuitry may adversely affect the quality of analog signal measurements made by the MSP430 (...)

Features
  • Isolating target microcontroller from power and data signals removes influence of emulation  hardware in order to improve analog measurements
  • Galvanic isolation between emulation programming and target sides of supported development boards
  • No directly connected data signals
  • No directly connected  (...)
View details

Design tools & simulation

SIMULATION MODELS Download
SLLM173A.ZIP (2 KB) - PSpice Model
SIMULATION MODELS Download
SLLM223.TSC (74 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SLLM224.ZIP (13 KB) - TINA-TI Spice Model
SIMULATION TOOLS Download
SPICE-based analog simulation program
TINA-TI — TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
document-generic User guide

Reference designs

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TIDA-010054 — This reference design provides an overview on the implementation of a single-phase dual active bridge (DAB) DC/DC converter. DAB topology offers advantages like soft-switching commutations, a decreased number of devices and high efficiency. The design is beneficial where power density, cost, weight (...)
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Peak efficiency at 99%, 585-W high-voltage buck reference design with standard Si-MOSFETs
PMP30446 — This reference design converts a DC-input source in the range of 450 V to 780 V into non-isolated 390 V at 1.5 A. This is an alternative solution to SiC-FET and SiC-Diode buck converter, since the actual power stage uses only standard silicon components. In order to employ 600 V rated devices, the (...)
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REFERENCE DESIGNS Download
High-efficiency, low-emission, isolated DC/DC converter-based analog input module reference design
TIDA-010065 — This reference design is a simplified architecture for generating an isolated power supply for isolated amplifiers for measuring isolated voltages and currents. A fully integrated DC/DC converter with reinforced isolation operating from a 5-V input with configurable 5-V or 5.4-V output (headroom for (...)
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REFERENCE DESIGNS Download
Isolated delta-sigma modulator based AC/DC voltage and current measurement module reference design
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 (...)
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REFERENCE DESIGNS Download
Isolated power architecture reference design for communication and analog input/output modules
TIDA-00300 — This reference design provides a simple means through which to isolate I2C or SPI type communication lines. This is often required in Grid Infrastructure applications such as, protertion relays and circuit breakers, where high voltages are involved. This reference design provides the complete (...)
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REFERENCE DESIGNS Download
High Accuracy Analog Front End Using 16-Bit SAR ADC with ±10V Measurement Range Reference Design
TIDA-00834 — The TIDA-00834 reference design accurately measures voltage and current inputs using simultaneously sampled, 16-bit, ±10 V, bipolar input SAR ADC critical to identify power systems malfunction and power quality related failures accurately and quickly. This results in reduced power systems (...)
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REFERENCE DESIGNS Download
Compact, Non-Isolated 3 Phase Inverter Reference Design for 200-480 VAC Industrial Drives
TIDA-01456 — This reference design realizes a 3 phase inverter subsystem for variable frequency AC inverter drives and servo drives. This design is particularly suited for drive architectures in which the microcontroller and inverter ground are non-isolated. The basic isolated gate driver UCC5320S is used for (...)
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REFERENCE DESIGNS Download
Multi-Phase Power Quality Measurement with Isolated Shunt Sensors Reference Design
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 (...)
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REFERENCE DESIGNS Download
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 (...)
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REFERENCE DESIGNS Download
Energy Efficient and Isolated CANopen Interface Reference Design
TIDA-01406 — CAN and CANopen are legacy fieldbus protocols used in many applications in factory automation. Whenever high voltage could damage the end equipment there is need for isolation. Today’s smart factories utilize several energy efficient automation nodes. This reference design, which incorporates (...)
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REFERENCE DESIGNS Download
16S-17S Battery pack reference design with low current consumption
TIDA-010074 — This reference design is a low standby and low ship mode current consumption 16S-17S LiFePO4 Li-ion battery pack design for telecom battery backup and emotorcycles. It was implemented for a 2-layer PCB. The 9S-15S AFE bq76940 monitors the lower 15 cells voltage and a two-channel general purpose (...)
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REFERENCE DESIGNS Download
Accurate gauging and 50-μA standby current, 13-S, 48-V li-ion battery pack reference design
TIDA-010030 — This reference design is a low standby and ship mode current consumption and high SOC gauging accuracy 13S, 48-V Li-ion battery pack design. It monitors each cell voltage, pack current and temperature with high accuracy and protects the Li-ion battery pack against overvoltage, undervoltage, over (...)
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REFERENCE DESIGNS Download
24Vin to 12Vout @ 100mA isolated push-pull reference design with cascode FETs
PMP30440 — This reference design extends the input voltage range on low-voltage push-pull controllers by employing cascode external FETs. The input voltage range is 12 V (+/-10%) or 24 V (+/-10%), with an output power of 1.2 W. The output voltage can be selected from two values, 12 V and 5 V, according to a (...)
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REFERENCE DESIGNS Download
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 (...)
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REFERENCE DESIGNS Download
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 (...)
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REFERENCE DESIGNS Download
4-20mA Analog Input Module Reference Design for Safety Applications
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 (...)
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REFERENCE DESIGNS Download
High Accuracy ±0.5% Current and Isolated Voltage Measurement Ref Design Using 24-Bit Delta-Sigma ADC
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 (...)
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REFERENCE DESIGNS Download
Isolated CAN Flexible Data (FD) Rate Repeater Reference Design
TIDA-01487 — CAN and CANopen are legacy fieldbus protocols used in many applications in factory automation. Whenever high voltage could damage the end equipment there is need for isolation. This isolated CAN flexible data (FD) rate repeater reference design adds electrical isolation between two CAN bus (...)
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REFERENCE DESIGNS Download
Shunt-Based High Current Measurement (200-A) Reference Design with Reinforced Isolation Amplifier
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 (...)
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REFERENCE DESIGNS Download
20-bit, 1-MSPS Isolator Optimized Data Acquisition Reference Design Maximizing SNR and Sample Rate
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 (...)
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REFERENCE DESIGNS Download
8 Channel, 2-A High-Side Driver Reference Design for Digital Output Modules
TIDA-01552 — This eight-channel, parallel, 2-A, high-side, digital output reference design for factory automation applications like PLCs shows the diagnostic features and the power density of new Texas Instruments high-side driver components (such as TPS27S100). Each output can individually measure the output (...)
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20-bit Isolated Data Acquisition Reference Design Optimizing Jitter for Max SNR and Sample Rate
TIDA-01035 — The TIDA-01035 is a 20-bit, 1 MSPS isolated analog input data acquisition reference design demonstrating how to resolve and optimize performance challenges typical of digitally isolated data acquisition systems.
  • Significantly improves high frequency AC signal chain performance (SNR  and THD) by (...)
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Battery Pack Controller Communications Bridge Reference Design
TIDA-01400 — The Bridge BoosterPack demonstrates the bq76PL455A-Q1 configured as a dedicated communications bridge to translate MCU UART  communications to the bq76PL455A-Q1 daisy chain. The bq76PL455 Bridge BoosterPack also offers  an isolated current sense input for measuring battery pack current, as (...)
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Bi-Directional Battery Initialization System Control Board Reference Design
PMP40280 — The PMP40280 is a battery initialization reference design solution for automotive and battery applications. The MCU TM4C123GH6PZ sets charging/discharging current and real time monitors battery voltage and charging/discharging current. It will calibrate system gain error to meet (...)
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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 (...)
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Extended Current and Voltage Measurement Using Shunts for Protection Relays Reference Design
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 (...)
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EMC Compliant, Group Isolated, 2-Channel Binary Input Module for Wide AC/DC Input Reference Design
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 (...)
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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 (...)
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Reference Design to Measure AC Voltage & Current in Protection Relays w/Delta-Sigma Chip Diagnostics
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 (...)
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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 (...)
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Isolated GaN Driver Reference Design
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 (...)
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High Speed Digital Output PLC Module Reference Design
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 (...)
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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 (...)
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16-Bit 1-MSPS Data Acquisition Reference Design, Isolated for High-Voltage Common-Mode Rejection
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 (...)
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Shunt-Based 200A Peak Current Measurement Reference Design Using Isolation Amplifier
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 (...)
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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 (...)
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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 (...)
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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.
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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.
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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 (...)
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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.
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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 (...)
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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 (...)
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Design files
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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.
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Videos

Anti-tamper Techniques to Thwart Attacks on Smart Meters— Hardening a meter against magnetic tamper attacks: Transformer Based High-Side Power Supplies

This module covers the advantages and disadvantages of using a transformer-based power supply to power the high-side of the AMC1304

Posted: 12-Jan-2017
Duration: 03:12

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