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 Base Board is the host of multiple hardware combination of Shield (Sensor and/or Actuators and Connectivity ) defined for the IoT application hardware implementation. Physical connectors to the shield include Pmod and Arduino format. The base board is also hosting the USB interface to the host PC for Programming the embedded application onto the ARM Cortex M3 Processor, for simple debugging and powering up the application. Additionally the Base board is equipped with a Jtag debug interface to accommodate any complex software debugging tasks.

Power Supply needed:
Digi-Key
Mouser

The BLDC-GEVK evaluates the LV8907, a high performance, sensor-less three-phase BLDC motor controller with integrated gate drivers for driving external N-MOSFETs. An on-chip two-stage charge pump provides required gate current for a wide range of ultra low RDS(ON) type external N-MOSFETs. The device offers a rich set of system protection and diagnostic functions such as over-current, over-voltage, short-circuit, under-voltage, over-temperature and many more. It supports open-loop as well as closed-loop speed control with user configurable startup, speed setting and proportional/integral (PI) control coefficients, making it suitable for a wide range of motor and load combinations. With an in-built linear regulator for powering an external circuit, a watchdog timer and a Local Interconnect Network (LIN) transceiver, the LV8907 offers the smallest system solution footprint. An SPI interface is provided for parameter setting and monitoring the system health and utilized through the PCA9655E's 16 bits of General Purpose parallel Input and Output (GPIO) expansion.

Power Supply needed:
Digi-Key
Mouser

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 NCL30288LED1GEVB is an AC-DC power factor corrected flyback controller targeting isolated and non-isolated buck-boost/SEPIC constant current evaluation board for LED driver applications. The controller operates in a quasi-resonant mode to provide optimal efficiency. Thanks to a novel control method, this board 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 board is specifically intended for very compact, space efficient designs

This evaluation board features an 8 watt, off-line, dual output, flyback power supply intended for powering white goods or industrial equipment circuitry which does not require output isolation from the AC mains. The flyback converter is designed around ON Semiconductor's 100 kHz NCP1075 monolithic switching controller. A simple voltage sensing and feedback scheme utilizing a current mirror transistor pair (Q1), and zener diode (Z1) is utilized for low cost yet effective output regulation for most typical applications.

This particular design example provides output voltages of 5V and 8.5V but these can be tailored to other voltages to accommodate the specific requirements by appropriate transformer turns ratio changes and alterations to voltage setting zener Z1 and resistor R6.

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 NCP1340UHDGEVB Evaluation Board is designed to effectively evaluate the NCP1340, which is a highly integrated quasi?resonant flyback controller suitable for designing high?performance off?line power converters. With an integrated active X2 capacitor discharge feature, the NCP1340 can enable no?load power consumption below 30 mW. The quasi?resonant current?mode flyback stage features a proprietary valley?lockout circuitry, ensuring stable valley switching. This system works down to the 6th valley and transitions to a frequency foldback mode to reduce switching losses. As the load decreases further, the NCP1340 enters quiet?skip mode to manage the power delivery. To help ensure converter ruggedness, the NCP1340 implements several key protective features such as internal brownout detection, a non?dissipative Over Power Protection (OPP) for constant maximum output power regardless of input voltage, a latched over voltage and NTC?ready over temperature protection through a dedicated pin, and line removal detection to safely discharge the X2 capacitors when the line is removed.

The NCP1399AIOGEVB Evaluation Board is designed to effectively evaluate the NCP1399, which is a high performance current mode controller for half bridge resonant converters. This controller implements 600 V gate drivers, simplifying layout and reducing external component count. The built?in Brown?Out input function eases implementation of the controller in all applications. In applications where a PFC front stage is needed, the NCP1399 features a dedicated output to drive the PFC controller. This feature together with dedicated skip mode technique further improves light load efficiency of the whole application. The NCP1399 provides a suite of protection features allowing safe operation in any application. This includes: overload protection, over?current protection to prevent hard switching cycles, brown?out detection, open optocoupler detection, automatic dead?time adjust, overvoltage (OVP) and overtemperature (OTP) protections.

The NCP3233GEVB is a 20A step down converter (with internal MOSFETs) capable of operating from 3V to 16V without the need for an external bias. This fixed frequency converter offers high efficiency and the output can be adjusted to offer a voltage as low as 0.6V. An adjustable current limit allows the device to be used for multiple current levels. The evaluation board is offered is a thermally enhanced 6mm by 6mm QFN package ent, high efficiency voltage-mode synchronous buck converter which operates from 4.5 V to 18 V input and generates output voltages down to 0.6 V at up to 25 A DC load or 30 A instantaneous load.

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 NCV7684I2CV1GEVB evaluation board demonstrates the Rear Combination Lamp Application with the NCV7684 LED linear current driver. On-board buck converter creates constant voltage of 7.0 V on the top of the LED's to have lower power dissipation on the device itself. The board contains up to three LEDs in a series for each twelve channels. The amber color of the LED's can emulate TAIL/STOP functionality. The Evaluation board has an expansion connector for optional connection of the external MCU board, which can control the driver via I2C interface. NCV7684 has several kinds of the fault detection's, fault detection can be emulated by shorting or opening on-board jumpers. The indication LED's can inform users about diagnostic and the status of the supplies.

The NCV7703CGEVB is a triple half-bridge driver evaluation board for automotive applications targeted for use as a side-view mirror control in an automobile. X-Y mirror control is accomplished by using a common node for the dual motors and communicating to the device through its SPI bus. The two on-board motors display the mirror application in action. Each of the 3 NCV7703C output drivers is designed in a half-bridge configuration for 500 mA with an overcurrent minimum threshold of 1.1 A.

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.

В базовом проекте PMP10116 используется контроллер ККМ в переходном режиме UCC28063A для управления LED’ами с током до 700 мА и входом по переменному току. Данная топология ККМ с обратноходовым преобразователем подразумевает гальваническую развязку и задействует управление в квазирезонансном режиме. В проекте поддерживается аналоговый димминг на выходной стороне. Инструкцию к проекту вы можете найти тут: LED-драйвер на базе однокаскадного обратноходового AC/DC-преобразователя UCC28060.

 

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.

The UIC1WGEVB evaluation board showcases a simple, low cost, low part count chopper topology circuit. It is designed to safely operate with input voltages varying from 80 VAC to 280 VAC. ON Semiconductor CCRs are used to provide constant LED current and to protect LEDs from over-voltage conditions.

This circuit uses active switching to change how the load is being driven. The LED load will either be driven from the capacitor, C1, discharging, or directly from the AC source. The CCR ensures a constant current through the LED throughout all modes of operation. The switching point of the circuit may be changed by varying the resistor, R1. Changing this switching point will change the amount of time the capacitor is charging. If a higher power output is desired a higher current CCR can be used and the switching point will need to be changed. A metal oxide varistor and fuse are designed into the circuit for surge protection purposes.