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Category: Sensing Reference Designs

±0.5°C 2-Wire Galvanically Isolated IC Temp Sensor with Pulse Count Interface Reference Design

In order to provide system designers a new cost-effective and easy alternative to assured precision temperature measurement: this reference design discusses the new tiny 2-pin digital output IC temperature sensor with single wire pulse count interface that enhances reliability and greatly simplifies the design of galvanic isolation architecture for sending both power and unidirectional data…
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±100A Bus Bar Current Sensor using Open-Loop Fluxgate Sensors Reference Design

This single-supply open loop current sensing solution to accurately measure dc: ac and pulsed currents. Allows highly accurate current measurements up to 110 A
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±1A Single-Supply Low-Side Current Sensing Solution Reference Design

This single-supply low-side: bi-directional current sensing solution can accurately detect load currents from -1 A to 1 A. The linear range of the output is from 110 mV to 3.19 V. The design utilizes the OPA2313 configured as a difference amplifier and reference voltage buffer.
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±2% Accurate Humidity Sensing Reference Design Supporting Robust 2m Wire Communication

The TIDA-00972 reference design provides a sensor module level solution for +/- 2% of accuracy and reliable Relative Humidity (RH) and +/- 0.2 °C accuracy temperature sensing. The sensor module utilizes TI’s digital humidity and temperature sensor HDC1080 together with integrated communication bus buffer TCA9517 to provide high accuracy sensing result with robust communication over meters of…
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0-1A: Single-Supply: Low-Side: Current Sensing Solution

This TI Verified Design implements a single-supply: low-side current sensing solution that can accurately detect load current from 0-1A.  The corresponding linear output range is from 0V to 4.9V. This design relies on the LM7705 inverting charge pump to bias the negative supply of the OPA320 to -0.23V. This setup extends the linear output range of the amplifier below 0V.  The circuit's linear…
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1-Degree Dial Reference Design Using the LDC1314 Inductance-to-Digital Converter

The LDC1314's unique inductive sensing capability is used to implement a contactless rotational position sensing solution that is accurate to 1 degree. It uses standard PCB technology and easily manufactured components to implement a low cost solution.This reference design uses the LDC1314.  This reference design can also be used with LDC1312: LDC1612 and LDC1614.
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1-kW/36-V Power Stage for Brushless Motor in Battery Powered Garden and Power Tools Reference Design

This reference design is a power stage for brushless motors in battery-powered garden and power tools rated up to 1 kW. The power stage operates from a 10-cell lithium-ion battery with a voltage range from 36 to 42 V. The design uses CSD18540Q5B NexFETs featuring a very low drain-to-source resistance (RDS_ON ) of 1.8 mΩ in a SON5x6 SMD package: which results in a very small form factor of 57 ×…
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10uA-100mA: 0.05% Error: High-Side Current Sensing Solution Reference Design

This TI Precision Verified Design provides the theory: component selection: simulation: complete PCB schematic and layout: bill of materials: and measured performance of a split-supply: high-side four decade current sensing solution that can accurately detect load currents from 10uA-100mA. The corresponding linear output is from 10mV to 4.9V which enables measurement by common 5V ADCs. The design…
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12- to 24-V: 27-A Brushed DC Motor Reference Design

Brushed motors are a relatively popular option for motor designs because of their low price and simple control scheme.  A brushed motor has a wire-wound rotor and permanent magnet stator.  The commutation of the motor is achieved using conductive rings that are connected to the rotor using brushes that scrape against the commutator rings.  This allows the direction of current through the motor…
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144W Single-Phase Synchronous Boost Converter With DCR Current Sensing

PMP9393 is a Single-Phase Synchronous Boost Converter which utilizes the LM5122 controller IC.  The design accepts an input voltage of 18Vin to 20Vin and provides an output of 48Vout capable of supplying a maximum of 3A of current to the load. DCR current sensing has been implemented in order to reduce the BOM cost associated with using a high power current sense resistor.
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16-button Inductive Keypad Reference Design Using the LDC1314 Inductance-to-Digital Converter

The LDC1314's unique inductive sensing capability is used to implement a contactless: 16 button: multi-function keypad. It uses standard PCB technology and easily manufactured components to implement a low cost solution.This reference design uses the LDC1314.  This reference design can also be used with LDC1312: LDC1612 and LDC1614.
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180-W: Dual-Channel: Step-Down Converter Reference Design with 97% Efficiency for Server PSU

The TIDA-01444 reference design for server PSU: PC PSU: and other step-down converter applications implements a 180-W buck: dual-channel DC-DC converter with a regulatory 12-V DC input voltage designed to provide the terminal load voltage with greater than 97% efficiency and good thermal performance. The switching frequency synchronization between the dual channels is easily realized. The true…
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18Vdc-60Vdc Input: 3.3V/15A Active Clamp Forward: 1/8 Brick Reference Design

The PMP8973 reference design generates a 3.3V/15A output from an 18V to 60V telecom input. The UCC2897A controls an active clamp forward converter power stage. The low gate charge and low RDSon of the CSD16415Q5 and CSD18502Q5B: implemented as synchronous rectifiers: provides for a highly efficient design. This design is laid out in a standard eighth brick footprint and achieves peak efficiencies…
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220V-400VDC Input: 12V/160W Active Clamp Forward

This reference design generates an isolated 12V/160W output from a high voltage DC input. This design is intended to operate from the output of PFC front end regulator. The UCC2897A is used to control an active clamp forward converter. Texas Instruments CSD18531Q5A synchronous rectifiers allow this design to achieve over 92% efficiency. An accurate current limit is provided by directly sensing the…
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220V-400VDC Input: 5V/100W Active Clamp Forward Reference Design

This reference design generates an isolated 5V/100W output from a high voltage DC input. This design is intended to operate from the output of a PFC front end regulator. The UCC2897A is used to control an active clamp forward converter. Self-driven synchronous rectifiers allow for 91% efficiency. An accurate current limit is provided by directly sensing the output current. A clock pulse output is…
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230-V: 3.5-kW PFC with >98% Efficiency: Optimized for BOM and Size Reference Design

The TIDA-00779 is a 3.5-kw: cost competitive power factor regulator converter designed for room air-conditioner and other major appliances. This reference design is a continuous-conduction-mode (CCM) boost converter implemented using TI’s UCC28180 PFC controller provided with all of the necessary built-in protections. The hardware is designed and tested to pass surge: and EFT testing as per the…
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230V/250W: Hi-η Sensorless Brushless DC Motor Drive with 30% Reduced Bulk Capacitor Reference Design

The TIDA-00472 is a discrete IGBT-based three-phase inverter for driving brushless DC (BLDC) motors rated up to 250 W: for example: used in cooker hoods: using a sensor-less: trapezoidal control method. The design provides software implementation for DC bus voltage ripple compensation resulting in 30% reduction in the DC bus capacitor requirement and reduced overall BOM cost. The cycle-by-cycle…
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24V Stepper Motor Controller with Integrated Current Sense Reference Design

The TIDA-00867 reference design showcases the benefits of integrated current sensing for stepper motors. Integraded current sensing is available on the DRV8885. The DRV8885EVM to demonstrate this feature.
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24V: 100W/30W Dual Sensorless Brushless DC Motor Drive Reference Design

TIDA-00447 is a 24V: dual Brushless DC (BLDC) motor drive reference design to be used in major home appliances to drive low voltage BLDC motors such as pumps and fans: e.g. for circulation pump and drain pump of dishwashers. The power stages of motor drive are designed for 100W and 30W of continuous operation respectively. The 30W drive is based on a single chip: low external component count…
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30A Range Bidirectional Current Shunt Monitor Reference Design

This verified design can accurately measure current across a range of 30 A on a bus that carries up to 36-V common mode voltage over a range of -40 °C to +85 °C.  This design can measure current from 0 A to 30 A with a grounded reference or -30 A to 0 A with a 16-V reference.  The design sums the output of two INA250A2 devices and generates a ground-referenced output voltage.  The INA250 is a…
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