company blog about Recycle TI Evaluation Board:LED Driver,Battery Charger,Analog Front End

Recycle TI Evaluation Board:LED Driver,Battery Charger,Analog Front End

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I. TI LED Driver Evaluation Boards

TI LED driver evaluation boards are specifically designed for diverse LED drive applications across automotive, consumer electronics, industrial control, and other sectors. Equipped with TI's high-performance LED driver chips, they enable rapid assessment of core parameters such as dimming accuracy, efficiency, and protection features, streamlining the R&D process for LED lighting and display products. Their key advantages lie in standardised hardware design, comprehensive protection mechanisms, and flexible dimming control, catering to LED applications of varying power levels and types.

1.1 Core Representative Models and Features

The TI LED Driver Evaluation Board offers a comprehensive product portfolio encompassing multiple topologies including buck, boost, and matrix drivers. Detailed specifications for two representative models are provided below:

- TPS92643EVM-204: Specifically engineered for high-current automotive LED drive applications, featuring the TPS92643-Q1 3.0A synchronous buck LED driver IC. It supports a wide input voltage range from 5.5V to 40V (rated at 13V), delivers up to 3.0A continuous current with 4% current accuracy, ensuring stable and consistent LED brightness. This evaluation board incorporates both precision analogue dimming and PWM dimming functionality for flexible LED brightness adjustment. It integrates LED short-circuit, open-circuit, and wiring fault detection with indication capabilities, making it suitable for demanding automotive LED lighting applications. This design effectively protects LEDs and the driver chip from damage. An internal 5V regulator is also included, enabling duty cycle control of the on-board 1.4kHz PWM signal to further enhance dimming flexibility and stability.

- TLC6983 Evaluation Module: This 48x16 common-cathode matrix LED display driver evaluation board incorporates the TLC6983 matrix driver chip, serving as an ideal assessment tool for LED display applications. This evaluation board supports highly integrated, high-refresh-rate LED matrix driving and can be used with the TI LaunchPad development kit. It is suitable for indoor/outdoor LED displays, Mini/Micro-LED displays, and similar applications. It enables engineers to rapidly validate the matrix driver chip's drive capability, signal synchronisation, and power consumption performance. The kit also includes detailed setup instructions, schematics, PCB layouts, and a bill of materials, facilitating reference designs for engineers and accelerating LED display product prototyping and performance optimisation.

1.2 Core Functions and Application Scenarios

Core functionalities of TI LED driver evaluation boards typically encompass a wide input voltage range, high-precision current control, flexible dimming, and comprehensive fault protection (overcurrent, overvoltage, overtemperature, LED failure). Certain models additionally support multi-channel driving, accommodating multi-series and multi-parallel LED arrays. Furthermore, most evaluation boards support USB or external power supply operation. When paired with TI's GUI software, they enable real-time monitoring of chip operating parameters (current, voltage, temperature) and convenient adjustment of dimming parameters, significantly reducing evaluation complexity.

Application scenarios primarily span three domains: Automotive (headlights, ambient lighting, instrument panel backlighting) Consumer electronics (mobile phones, tablets, laptop backlighting, smart wearable LED indicators) Industrial and lighting applications (LED street lamps, industrial/mining lights, industrial control panel backlighting, LED displays, landscape lighting) Among these, Mini/Micro-LED displays and automotive LED lighting represent current hot application trends. TI evaluation boards specifically address core challenges in these scenarios, such as brightness stability, fault protection, and power consumption control.

II. TI Battery Charger Evaluation Boards

TI battery charger evaluation boards incorporate TI's high-performance battery charge management ICs, supporting diverse battery types including lithium-ion, nickel-metal hydride, and lead-acid batteries. They accommodate multiple charging topologies such as linear charging and switched-mode charging (buck, boost, buck-boost), enabling rapid evaluation of charging efficiency, precision, charging profiles, and protection features. These boards cater to battery charging requirements across portable devices, automotive electronics, industrial equipment, and energy storage systems. It empowers engineers to optimise charging solutions, enhancing battery endurance and lifespan.

2.1 Core Representative Models and Features

TI's battery charger evaluation board portfolio is extensive, encompassing low-power linear chargers, high-power switching chargers, and bidirectional charging controllers to suit varying battery capacities and power requirements. Below are detailed descriptions of two representative models:

- USB-PD-CHG-EVM-01: An evaluation module integrating USB Type-C Power Delivery (PD) and battery charging functionality, featuring the core chips bq25798 and TPS25751. The bq25798 is an I²C-controlled 1-4 series, 5A buck-boost solar cell charger with dual input selector and MPPT capability; The TPS25751 is a USB Type-C and PD controller capable of internally sourcing and sinking 20V/5A current. Communication between the PD controller and battery charger is achieved via the on-board I²C bus, enabling charger programming without additional hardware. A single flash programming session suffices to meet user-defined configuration requirements. The compact overall solution evaluates charging performance for 2-4 series batteries, suitable for portable energy storage and smart devices requiring USB-PD fast charging. It incorporates the TPS54531 buck converter and TLV755P LDO regulator to enhance power management stability and efficiency.

- bq25176k Evaluation Solution: Incorporates the bq25176k 800mA linear charger IC, specifically designed for single-cell lithium and lithium iron phosphate batteries. Features VIND PM and JEITA compatibility, with exceptionally low power consumption and minimal standby current, making it ideal for low-power portable devices. This evaluation board supports constant current and constant voltage charging modes with adjustable charging current. It integrates overcurrent, overvoltage, and overtemperature protection to safeguard both the battery and charging chip. With a low unit cost (just $0.42 at 1ku volume pricing), offering excellent value for money. It is well-suited for charging evaluation needs in low-power, small-capacity batteries for smart wearables, compact sensors, and portable medical devices, enabling engineers to rapidly validate the performance and stability of low-power charging solutions.

2.2 Core Functions and Application Scenarios

Core functionalities include diverse charging modes (constant current, constant voltage, pulse charging), high-precision voltage/current control (±1% accuracy), and low-power design (standby current as low as 2μA in select models) to maximise battery standby time. Comprehensive protection features (overcurrent, overvoltage, overtemperature, reverse battery connection, charging timeout) ensure safe and reliable operation. Select premium models support bidirectional charging (charging + discharging), multi-battery series/parallel charging, solar charging (with MPPT functionality), and I²C or SMBus communication. Charging parameters can be flexibly configured via software to accommodate complex application scenarios.

Application scenarios are extensive, primarily including: portable consumer electronics (mobile phones, tablets, headphones, smartwatches, power banks), automotive electronics (in-vehicle devices, auxiliary battery charging), industrial equipment (industrial sensors, portable test instruments, garden tools), medical devices (portable medical monitors, infusion pumps), and energy storage equipment (small-scale energy storage stations, portable energy storage power supplies). Among these, USB-PD fast charging, bidirectional charging, and low-power charging represent current core demand areas, for which TI evaluation boards provide targeted solutions.

III. TI Analogue Front-End (AFE) Evaluation Boards

The analogue front-end (AFE) serves as the critical interface between sensors and digital processors, handling functions such as sensor signal acquisition, amplification, filtering, and analogue-to-digital conversion (ADC). It directly impacts the measurement accuracy and stability of the entire system. TI's AFE evaluation boards incorporate high-performance AFE chips, covering diverse fields including biosensing, RF sampling, and industrial measurement. They enable rapid assessment of AFE chip performance in signal acquisition accuracy, noise suppression capability, power consumption, and interface compatibility, thereby streamlining the development process for various sensing and measurement systems.

3.1 Core Representative Models and Features

TI offers a diverse range of AFE evaluation boards compatible with various sensor types (optical sensors, Hall sensors, RF sensors, pressure sensors, etc.). Detailed specifications for two representative models are provided below:

- AFE49I30EVM: Specifically engineered for wearable optical biosensing applications, featuring the ultra-low-power AFE49I30 integrated AFE chip. Suitable for biosensing scenarios such as heart rate monitoring (HRM) and peripheral capillary blood oxygen saturation (SpO₂). This evaluation board supports six switchable light-emitting diodes (LEDs) and four photodiodes. The current generated by the photodiodes is converted into voltage via transimpedance amplifiers (TIAs), then digitised by an analogue-to-digital converter (ADC). The ADC code can be stored in a 128-sample FIFO, whose depth is programmable and partitionable to accommodate varying storage requirements. Data retrieval is supported via an SPI interface. Additionally, the AFE chip incorporates a fully integrated LED driver with 8-bit current control, operable via an external clock or internal oscillator. It supports USB power supply and PC connectivity, with USB firmware upgrade capability. When paired with HRM sensor cables, it enables rapid evaluation of signal acquisition accuracy and low-power performance in biosensing systems, aiding wearable device development.

- AFE8000EVM: A high-performance RF sampling AFE evaluation module featuring the AFE8000 chip with 8 transmit (TX) and 10 receive (RX) channels. Operating across 100MHz to 7.1GHz with instantaneous bandwidth (IBW) up to 800MHz. This evaluation board incorporates a 14-bit 12GSPS digital-to-analogue converter (DAC) and a 14-bit 4GSPS analogue-to-digital converter (ADC), with an on-chip PLL/VCO for generating high-frequency clocks. Each channel features dual-band digital upconverters and downconverters, enabling simultaneous synthesis and digitisation of multiple high-dynamic-range broadband signals. The evaluation board supports JESD204B/C interfaces with serialiser/deserialiser transceiver rates up to 32.5Gbps. Inputs and outputs are provided via the on-board FMC connector. It also integrates the LMK04828 clock generator, which generates the SYSREF signal to provide an external clock solution with ultra-low phase noise. This makes it suitable for high-end applications such as RF communications, radar, and test and measurement. It can be connected to TI's pattern/acquisition card solutions and various FPGA development kits, facilitating engineers' evaluation of the performance of RF sampling AFEs.

3.2 Core Functions and Application Scenarios

Core functionalities across TI AFE evaluation boards include:

- High-precision signal acquisition (ADC resolution up to 12-16 bits, with select high-end models exceeding 14 bits)

- Low-noise amplification and filtering

- High sampling rates (certain RF sampling models reaching GSPS levels)

- Flexible interface configurations (SPI, I²C, JESD204B/C, etc.), and low-power design. These adapt to diverse sensor signal acquisition requirements. When paired with TI's GUI software, they enable real-time monitoring of acquired waveforms, adjustment of gain and filter parameters, and convenient verification of AFE chip performance. Some evaluation boards also integrate sensor interfaces for direct connection to external sensors, further streamlining the evaluation process.

Primary application scenarios span four key domains: - Biosensing and medical (wearable heart rate/oxygen saturation monitors, patient monitors, blood glucose meters) - RF and communications (5G communications, radar, satellite communications, test and measurement instruments) - Industrial measurement (pressure, temperature, flow sensor signal acquisition, industrial control systems) - Consumer electronics (smart wearables, smart home sensor modules) Notably, wearable biosensing and high-end RF communications represent current hotspots for AFE evaluation board applications. Industrial measurement (pressure, temperature, flow sensor signal acquisition, industrial control systems), and Consumer electronics (smart wearables, smart home sensor modules). Among these, wearable biosensing and high-end RF communications represent the most popular application directions for current AFE evaluation boards. TI evaluation boards effectively address core technical challenges in such scenarios, including low noise, high precision, and high sampling rates.