Диоды - Решения

The 60WLEDBULBGEVB Evaulation Board showcases an enhanced parallel-to-series LED lighting circuit. It uses updated control circuitry that allows the ability to accommodate multiple LED voltages by simply adjusting a single resistor (R3) as well as compensating for drift in LED voltage with temperature. It also has superb PF and THD performance, dimmability, low cost, and efficiency.

This circuit uses a parallel-to-series topology that dynamically adjusts LED load voltage as the instantaneous bridge output voltage varies. While a switch-mode power supply such as a buck converter reconfigures the input voltage to match the load, this circuit reconfigures the load to match the input voltage. When the instantaneous input voltage is relatively low, the LEDs are configured in parallel. When the instantaneously input voltage is relatively high, the LEDs are configured in series.

The circuit is designed for input voltages between 100 VAC and 140 VAC . ON Semiconductor CCRs are used to provide constant LED current and to protect LEDs from over-voltage conditions. The circuit employs an additional CCR (shown as CCR2) to increase LED current at high voltages for improved efficiency, PF, and THD performance.

The Dual LED Ballast Shield Evaluation Board utilizes the NCV78763, a single chip, highly efficient smart power ballast and dual LED driver designed for high current LEDs that provides the complete solution to drive two strings up to 60 V, by means of two internal independent buck switch channel outputs with the PCA9655E to provide 16 bits of General Purpose parallel Input and Output (GPIO) expansion through the I2C-bus and SMBus. Due to the SPI programmability, one single hardware setup can support multiple system configurations for a flexible platform solution approach.

Power Supply needed:
Digi-Key
Mouser

The LC709511A02GEVB is a Lithium ion switching charger controller for Power Bank. This device has all functions to control Power Bank application. It includes Type-C port control and Quick Charge 3.0 HVDCP. In addition this device applies 2.0 V or 2.7 V on USB data lines automatically for devices require the voltage. The built-in switching controller can output from 5 V up to 12 V for Quick Charge. The high power output for USB Type-C and Quick Charge is possible with appropriate external MOSFETs.

The NCL30186SMRTGEVB Evaluation Board is an AC-DC power factor corrected flyback controller targeting isolated and non?isolated “Smart?dimmable” constant current LED drivers. The controller operates in a quasi?resonant mode to provide optimal efficiency. The current control algorithm supports flyback, buck?boost, and SEPIC topologies. Thanks to a novel control method, the device is able to tightly regulate a constant LED current from the primary side. This removes the need for secondary side feedback circuitry, biasing and an optocoupler. The device is highly integrated with a minimum number of external components. A robust suite of safety protection is built in to simplify the design. This device is specifically intended for very compact space efficient designs and supports analog and PWM dimming with a dedicated dimming input intended to control the average LED current. To ensure reliable operation at elevated temperatures, a user configurable current foldback circuit is also provided.

The NCP1096 is a member of ON Semiconductor's Power over Ethernet-Powered Device (PoE-PD) product family and integrates an IEEE 802.3bt compliant PoE-PD interface controller. It incorporates the required functions of a PoE system such as detection, classification, and current limiting and also supports high-power applications (up to 100W) through an integrated transistor and sense resistor. The NCP1096GEVB enables the evaluation of the NCP1096 controller and includes RJ-45 connectors, power transformer, active bridge (Greend Bridge2) and other fixtures to help the end user with testing.

The NCP12510B65GEVB demonstration board is a flyback topology switched-mode power supply for demonstration of high efficiency and low no-load input power consumption of the power supply controlled by the NCP12510 controller. Demonstration board works in input voltage range from 90 Vac to 265 Vac and provides the output voltage 19 V up to 3.5 A output current. The controller NCP12510B is highly integrated current mode PWM controller with auto-recovery OCP protection. The switching frequency of the controller is 65 kHz for nominal output power. When the output power is decreasing, the controller automatically fold backs its switching frequency to the minimum 26 kHz and initiated the operation in skip mode for low no-load input power consumption. Controller is equipped by a lot of protections (OCP, OVP, OTP, OPP) for ensure the safety operation of the power supply. Moreover, the high robustness and high ESD capability of the NCP12510 controller contributes to the safety operation of the power supply.

The demoboard supports the very high?voltage tolerant linear regulator NCP781 in DFN6 3.3 x 3.3 package with fixed output voltage 5.0 V. The ENABLE function allows turn the device to low consumption mode with quiescent current about 1 uA. The device is able to withstand continuous DC or transient input voltages up to 150 V. The small output capacitor 0.1 uF is sufficient for stable behavior and allows smaller PCB design at space constraining applications.

Size: 50mm x 50mm x 19mm

The NCP81239GEVB evaluation board is designed to quickly test the NCP81239, which is a synchronous buck boost controller that is optimized for USB Power Delivery (PD) applications. It converts battery voltage or adapter voltage into power supply rails required in consumer devices such as notebook, tablet, and desktop systems that using USB PD standard and C?Type cables. NCP81239 is designed for applications requiring dynamically controlled slew rate limited output voltage that require either voltage higher or lower than the input voltage. The NCP81239 drives 4 NMOSFET switches, allowing it to buck or boost. The NCP81239 is fully compliant to the USB Power Delivery Specification when used in conjunction with a USB PD or C?Type Interface Controller.

The NV78763RCA11GEVK Evaluation Board has its BOM sized to allow the outputs to drive LED strings for a total power of above 20W and up to 60V voltage. LED channel 01 is dedicated DRL and PL, controlled via logarithmic dimming slopes ramp, while channel 02 performs the turn indicator (TURN/blinker) function. This kit includes the motherboard found here as well as cabling.

The page for the Kit(NV78763RLA11GEVK) can be found by clicking here.

The Power over Ethernet (PoE) Shield Evaluation Board demonstrates the NCP1083, a member of the ON Semiconductor high power HIPO™ Power over Ethernet Powered Device (PoE-PD) product family which represents a robust, flexible and highly integrated solution targeting demanding medium and high power Ethernet applications. It combines in a single unit an enhanced PoE-PD interface supporting the IEEE 802.3af and the upcoming draft IEEE 802.3at (D3.0) standard and a flexible and configurable DC-DC converter controller. The NCP1083's exceptional capabilities enable applications to smoothly transition from non-PoE to PoE enabled networks by also supporting power from auxiliary sources such as AC power adapters and battery supplies, eliminating the need for a second switching power supply.

The RSL10 Solar Cell Multi-Sensor platform is a complete, low-cost solution for developing self-powered sensor nodes using harvested solar energy. Based on the RSL10 SIP- the industry's lowest power Bluetooth ® 5 radio, the RSL10 Solar Cell Multi-Sensor platform supports continuous Bluetooth Low Energy transmission of sensor information without requiring any batteries. The fully-integrated platform features multiple smart sensors, an ultra-low quiescent current LDO regulator (NCP170), and a 2-port connector for the provided solar cell (FlexRB-25-7030 from Ribes Tech). Also included is a low-profile 47 uF storage capacitor and a programming and debug interface.

В базовом проекте производится преобразование сопротивления терморезисторов (RTD) в напряжение с уровнем, удобным для использования в качестве входа АЦП. Прецизионный источник опорного тока производит возбуждение, а инструментальный усилитель масштабирует сигнал. В данном проекте также используется конфигурация с трёхпроводным RTD для минимизации ошибок, связанных с сопротивлением проводников.

Данный базовый проект имеет характер аппаратного решения.