Дискретные компоненты, силовые модули - Решения

Описание:
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.

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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
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The BFP640 is a low noise wideband NPN bipolar RF transistor. Please refer to an application note or a technical report when you order the evaluation board.

Возможности:

• Maximum power gain G max = 18 dB @ 3.5 GHz, 3 V, 25 mA
• Very common as GPS low noise amplifier, see respective application notes on Infineon internet page
• Pb-free (RoHS compliant) and halogen-free standard package with visible leads

Описание:

The BFP740 is a low noise wideband NPN bipolar RF transistor. Please refer to an application note or a technical report when you order the evaluation board.

Возможности:

• NFmin = 0.85 dB @ 5.5 GHz, 3 V, 6 mA
• Maximum power gain G max = 19.5 dB @ 5.5 GHz, 3 V, 15 mA
• Pb-free (RoHS compliant) and halogen-free standard package with visible leads

Описание:
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
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The CCRGEVB is an evaluation board used to demonstrate some very simple, elegant, and cost effective solutions using ON Semiconductor's Constant Current Regulator. The board is divided into four general circuits, and contains 7 CCR's. There is also a LowVce BJT with two 4.7kΩ resistors for PWM dimming. Also included is a 1Ω current sense resistor.

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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
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The Dual Stepper Motor Driver Shield Evaluation Board evaluates the AMIS30543, a microstepping stepper motor driver for bipolar stepper motors. It has an on chip voltage regulator, reset output and watchdog reset able to supply peripheral devices. The chip is connected through IO pins and a SPI interface with an external microcontroller that is regulated through the PCA9655E's 16 bits of General Purpose parallel Input and Output (GPIO) expansion.

The AMIS-30543 is a micro-stepping stepper motor driver for bipolar stepper motors. The chip is connected through I/O pins and an SPI interface with an external microcontroller. It has an on chip voltage regulator, reset?output and watchdog reset, able to supply peripheral devices. AMIS-30543 contains a current?translation table and takes the next micro?step depending on the clock signal on the "NXT" input pin and the status of the "DIR" (=direction) register or input pin.

The chip provides a so-called "speed and load angle" output. This allows the creation of stall detection algorithms and control loops based on load-angle to adjust torque and speed. It is using a proprietary PWM algorithm for reliable current control. The chip is fully compatible with the automotive voltage requirements. The AMIS-30543 is ideally suited for general-purpose stepper motor applications in the automotive, industrial, medical, and marine environment. With the on-chip voltage regulator it further reduces the BOM for mechatronic stepper applications.

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The SIGFOX shield evaluation board demonstrates the AX-SFEU, a single chip solution to create an ultra low power consumption node on the Sigfox network for RCZ1 region (Europe), Internet of Things applications.
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Evaluation Board developed for 1ED44176N01F - EiceDRIVER™ 25 V low-side gate driver with integrated over-current protection (OCP) and enable/ fault output indication. The board contains one comparator, which is designed as a pulse generator, and one 1ED44176N01F to drive a SOT235-package MOSFET switch connected with an adjustable resistance load (potentiometer-R3).The MOSFET controls the turn-on or turn-off of the resistance load. Rotating the potentiometer, changes the loop current when the MOSFET is on, then gets the different voltage on the shunt resistor (R7). The two LEDs on the board show the different working status of 1ED44176N01F. If the green LED lights up, the 1ED44176N01F is working in normal operation mode. If the red LED lights up, the 1ED44176N01F is in fault condition mode.

EVAL-1ED44176N01F is available from Infineon in sampling quantities.

Возможности:

  • 0.5 V Over-current threshold with accurate ±5% tolerance
  • Over-current detection with positive voltage input
  • Single pin for fault output and enable
  • Programmable fault clear time
  • Under voltage lockout
  • CMOS Schmitt-triggered inputs
  • 3.3 V, 5 V and 15 V input logic compatible
  • Output in phase with input
  • Separate logic and power ground
  • 2 kV ESD HBM

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Решение представляет собой плату 40-ваттного источника питания, предназначенную для разработки и отладки недорогих зарядных устройств и адаптеров питания. Решение демонстрирует работу с CoolMOS P7 700 В, а так же общую схему контроллера. Отладочная плата предназначена для квазирезонантного обратноходового контроллера Infineon ICE2QS03G, обладающего низкими потерями при переключениях и позволяющего увеличить плотность мощности и уменьшить тепловыделение.

Возможности:

  • Топология: обратноходовая;

  • Входное напряжение: ~ 90-265 В;

  • Эффективность: 91,0% при 230 В, 89,5% при 120 В;

  • Недорогая однослойная плата.

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This Evaluation Board shows how to design the Halfbridge LLC stage of a Server SMPS with the target to meet 80+ Titanium Standard efficiency requirements. On this purpose there has been applied latest CoolMOS™ technology IPP60R180C7600V Power MOSFET on the primary side and OptiMOS™ Low Voltage Power MOSFET in SuperSO8 BSC010N04LSin the synchronous rectification secondary stage, in combination with QR CoolSET™ ICE2QR2280Z, Hi-Low Side Driver 2EDL05N06PF,Low Side Gate Driver 2EDN7524Fand a LLC Controller ICE2HS01G for the analog or XMC4200 in the digital version.

Возможности:

  • Output voltage: 12V
  • Output current: 50A
  • Peak efficiency @ 50% load > 97,4%
  • Efficiency @ 10% load > 95%

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The ICL8105 universal evaluation board is designed to offer designers maximum flexibility in terms of design during the initial design phase. It provides a flexible base for evaluating the performance of the ICL8105 digital flyback controller and the CoolMOS™ power switch. The objective of this board is to allow the designer to finalizethe circuitry and component values in a fast mannerbefore designing an own form factor PCB.

.dp Interface Gen2 Board can be ordered here

.dp Vision Software is available here

Возможности:

  • Universal AC input from 90 V~ to 305 V~

  • DC input option

  • Wide output voltage range: 20 V to 100 V

  • Output current: 0.1 A to 2.0 A

  • Tunable output voltage range: Wide/narrow/fixed

  • High efficiency with optional synchronous rectification

  • Selectable input and output capacitors

  • 0 – 10 V dimming with isolation support

  • Power rating option with 20W and 80W transformer included

  • Four daughter cards with ICL8105 included
  • Various footprint options for MOSFET/diode

  • Open load auto discharge

  • ICL8105 incl optimized parameter setting for 20W application, device parameters optionally configurable by graphical user interface (.dp vision)

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60W 16V SMPS Evaluation Board with F3 controller ICE3BS03LJG

Universal input power supply designed in a 16V 60W off line flyback converter that utilizes the F3 controller ICE3BS03LJG. The application board is operated in discontinuous current mode and running at 65 kHz switching frequency. It has one output voltage with secondary side control regulation. The ICE3BS03LJG is a current mode PWM controller. With the 500V startup cell, active burst mode and BiCMOS technologies, the standby power can be <100mW at no load. The frequency jitter mode and the soft gate drive can give a low EMI performance. The built-in 20ms blanking window and the extendable blanking time concept can prevent the IC from entering the auto restart mode due to over load protection unintentionally. The outstanding propagation delay compensation feature can allow a very precise current limit between low line and high line. For this IC, it provides both auto-restart and latch off protection mode. For those serious faults such as Vcc over-voltage, over temperature, short transformer winding, etc, the IC will enter the latched off protection mode. For the less severe case such as the over load, open loop, short opto-coupler, etc, it enter the auto restart protection mode. In case it needs customer defined protection, the external latch off enable feature can fulfill the requirement.

Возможности:

  • 500V Startup Cell
  • Active Burst Mode for lowest Standby Power
  • Fast load jump response in Active Burst Mode
  • 65kHz internally fixed switching frequency
  • Frequency jitter and soft gate driving for low EMI
  • Max Duty Cycle 75%
  • Overall tolerance of Current Limiting < ±5%
  • Internal PWM Leading Edge Blanking
  • BiCMOS technology provide wide VCC range
  • Built-in Soft Start
  • Built-in blanking window with extendable blanking time for short duration high current
  • Built-in latched Off Protection Mode for Over temperature, Over Voltage & Short Winding
  • Auto Restart Protection Mode for Over load, Open Loop & VCC Undervoltage
  • External latch enable function

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The FL7760LED1GEVK is development kit for a buck based LED driver controlled over an SPI bus. The LED driver has both analog and PWM dimming capability. A simple microcontroller can easily control the LED driver. The load board provides easy connection to the LED and has an SPI-USB bridge which allows the user to control the driver through his USB port using a simple terminal application.
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Hybrid-Kit for HybridPACK™1 PinFin

Возможности:

  • Complete inverter solution for applications up to 50kW (Full Hybrid Electrical Vehicles) with IGBT module HybridPACK™1 Pin-Fin (FS400R07A1E3_H5) 650V/400A
  • Employing coreless transformer isolated driver (1ED020I12- FA)

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Hybrid-Kit for HybridPACK™1

Возможности:

  • Complete inverter solution for applications up to 30kW (Full Hybrid Electrical Vehicles) with IGBT module HybridPACK™1(FS400R07A1E3) 650V/400A
  • Employing coreless transformer isolated driver (1ED020I12- FA) and overvoltage protection (active clamp)

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25W-500W Scalable Output Power Class D Audio Power Amplifier Reference Design. Using the IRS2092 Protected Digital Audio Driver


Benefits:

  • 250 W x 2 channels, (THD=1%, 1kHz, 4 Ohms)
  • 0.05% THD+N distortion @ 120W, 4 Ohms
  • Residual noise 200 µV, IHF-A weighted, AES-17 filter
  • All through-hole components on single layer PCB
  • OCP, OVP, UVP, DC protection and OTP
  • Half bridge/ full bridge selector
  • Featuring IRS2092 Gate Driver IC and IRFI4019H-117P MOSFETs

Target Applications:

  • Class D Audio
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The IRAUDAMP7S reference design is a two-channel Class D audio power amplifier that features output power scalability. The IRAUDAMP7S offers selectable half-bridge (stereo) and full-bridge (bridged) modes.

This reference design demonstrates how to use the IRS2092 Class D audio driver IC, along with IR’s digital audio dual MOSFETs, such as IRFI4024H-117P, IRFI4019H-117P, IRFI4212H-117P and IRFI4020H-117P, on a single layer PCB.

The design shows how to implement peripheral circuits on an optimum PCB layout using a single sided board. The resulting design requires a small heatsink for normal operation (one-eighth of continuous rated power).

The reference design provides all the required housekeeping power supplies and protections.

NOTE: Unless otherwise noted, this user’s manual is based on the 150 V model, IRAUDAMP7S-150. Other output power versions can be configured by replacing components given in the component selection of Table 5 on page 36.
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Single channel 1700 W (2 &#937 ) Half-bridge Class-D Audio Power Amplifier


Benefits:

  • 1700 W Single channel (2Ohms load THDN=10%, 1kHz)
  • 1% THD+N distortion @ 1200W, 2 Ohms +/-75V
  • Residual noise 290 µV, IHF-A weighted, AES-17 filter
  • 94% efficiency @ 1200W, 2 Ohms, Single Channel Driven, Class-D Stage
  • OCP, OVP, UVP, DC protection, HOPS ( High Output peak Shutdown Protection) and OTP
  • Self-oscillating half-bridge topology with optional clock synchronization
  • Featuring IRS2092S Gate Driver ( with external BJT buffering ) and IRFB4227PBF 200V MOSFETs

Target Applications:

  • Class D Audio
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CFL Ballast for 26W/Spiral Lamp, 220VAC Input


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This adapter kit is intended for use when replacing an analog control card with its digital alternative. The kit offers as a replacement optionInfineon's XMC4200 microcontroller ARM Cortex.

Related boards:

Возможности:

  • Replacement to analog control with the Infineon XMC4200 Microcontroller ARM Cortex
  • Full digital control
  • Accurate driving scheme of both primary and secondary MOSFETs
  • Compatibility withall Infineon EVAL_600W_12V_LLC boards

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The LC709511A05GEVB is a Lithium ion switching charger controller for Power Bank applications. 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.
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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.
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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.
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The NCP1095 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 external transistor and sense resistor. The NCP1095GEVB enables the evaluation of the NCP1095 controller and includes RJ-45 connectors, power transformer, active bridge (Greend Bridge2) and other fixtures to help the end user with testing.
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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.
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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.
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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
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The NCV7748GEVB evaluation board is an octal low-side relay driver for automotive applications targeted for use in a Power Distribution Box (PDB). Communication to the device is through a LIN bus compliant to SAE J2602 and LIN 2.x. All drivers have passive output clamps for limiting output voltage spikes during flyback events during inductive relay turn-off events.
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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.
Описание:
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.
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The STEVAL-IHT003V2 evaluation board represents an innovative solution patented by STMicroelectronics to reduce the power losses caused by positive temperature coefficient (PTC) resistors in compressor starter circuits.

The solution features an ACST6 AC switch device to turn off the PTC current after motor start-up; note that the traditional PTC is still used in the electronic starter circuit as it increases circuit safety for AC switch short-circuits or diode mode failure (ref. EN60335-1).

The design reduces starter standby losses from (typ.) 2.5 W to 380 mW for 230 V applications, or 2.5 W to 40 mW for 100 V applications.

Before using the board with a compressor, the PTC behavior must be checked (especially VPTC1 and VPTC2 levels) and different R4 resistor values may be required.

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The STEVAL- ISA032V1 forward converter demonstration board is a power supply based on the primary controller L5991 and the STP10NK60Z N-channel 600 V power MOSFET. It is designed to be suitable to supply power to the electronic fiscal cash register (EFCR) demonstration board STEVAL-IPC001V1.

The STEVAL- ISA032V1 demonstration board accepts a wide range of input voltage (88 to 265 Vac) and delivers a single 9 V output with a power capability of up to 50 W continuous, and 60 W peak, making it also capable of providing power to a thermal printer.
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The STEVAL-TDR004V1 demonstration board is an RF broadband power amplifier intended for linear or nonlinear operation over the 1.6 to 54 MHz band, using two SD2933 gold metallized Nchannel MOS field-effect transistors. The temperature compensating biasing circuit supports class B and class AB operation.

STEVAL-TDR004V1 is designed in cooperation with Specific RF Devices (Germany).

Возможности:

  • IMD at 300 WPEP < -26 dBc
  • Efficiency: 57 % - 76 %
  • Excellent thermal stability
  • Supply voltage: 48 V
  • Frequency: 1.6 - 54 MHz
  • Input power 10 W max.
  • Load mismatch: 3:1 (all phases)
  • Output power: 400 W (typ.)

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The STEVAL-TDR014V1 is a demonstration board using the PD55008-E common source N-channel enhancement-mode lateral field effect RF power amplifier. It is designed as a driver for UHF mobile radio applications.

Возможности:

  • Excellent thermal stability
  • Frequency: 400 - 500 MHz
  • Supply voltage: 12.5 V
  • Output power: 8 W
  • Efficiency: 48 % - 54 %
  • Load mismatch: 20:1
  • BeO-free amplifier

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  • Топология платы
Описание:
В данном проекте представлена гибкая система управления шаговыми двигателями, предназначенная для управления одним или двумя шаговыми двигателями или 8 периферийными устройствами и требующая использования меньшего количества портов ввода-вывода общего назначения (General Purpose Input / Output, GPIO) на головном контроллере, что позволяет снизить общую стоимость системы. Данное решение подходит для применения в системах, в которых требуется использование шаговых двигателей или катушек, предназначенных для работы с напряжениями до 50 В и токами до 2,5 А (при всех задействованных каналах). Данный проект имеет несколько конфигураций выходов, что обеспечивает возможность управления несколькими периферийными устройствами (например, 1 двигателем, 1 зуммером, 1 реле и 2 светодиодами). Данное решение возможно адаптировать для работы в составе системы автоматического управления воздушной заслонкой системы отопления, вентиляции и кондиционирования (ОВК), а также для управления реле, зуммерами и светодиодами. Кроме того, данный концепт может быть расширен ещё больше для управления любым количеством каналов в составе других систем автоматизации зданий, включая системы управления воздушными заслонками в составе интеллектуальных вентиляционных систем, системы автоматического управления наклоном створок жалюзи, а также системы управления панорамированием и углом наклона IP-камер.

Базовый проект имеет характер аппаратно-программного решения.
Возможности:

  • Адаптируемая под широкий ряд систем автоматизации зданий подсистема
  • Для управления любым количеством (до 8) каналов требуются всего лишь 3 GPIO-вывода
  • Возможность расширения до требуемого количества управляемых каналов
  • Возможность адаптации под широкий ряд управляемых устройств: шаговые двигатели, реле, светодиоды
  • Высоковольтные (до 50 В) и высокоточные (до 500 мА на канал) управляемые выходы

Документация:
  • Даташит
  • Схемотехника
  • BOM
  • Топология платы
Описание:

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.

Возможности:

  • Преобразование сопротивления терморезистора в напряжение
  • Диапазон выходного напряжения от 0 В до 5 В во всём температурном диапазоне
  • Отсутствие ошибок, связанных с сопротивлением проводников
  • Возможность изменения набора дискретных резисторов

Документация:
  • Даташит
  • Схемотехника
  • BOM
Описание:
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.

Документация:
  • Даташит
  • Схемотехника
  • BOM
  • Топология платы
  • Тестирование
*Информация о ценах и сроках поставки носит информационный характер. Офертой является только выставленный счет.

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