CATEGORIES

LEDドライバ

STはエネルギー効率に優れたDC-DC電源LEDドライバICの幅広い製品ポートフォリオを用意し、一般照明、ディスプレイのLEDバックライト、自動車の外装および内装の照明に向けて提供しています。また、標識や交通信号機向けに、RGBおよび単色LEDドライバを提供しています。

STのLEDドライバの製品ポートフォリオは、並列構成と直列構成のいずれにも適しており、高い効率、高い電流精度、および低雑音の小型ソリューションを実現します。トポロジにはバック・レギュレータ、ブースト・レギュレータ、オフラインLEDドライバ、リニアLED電源、高度な明るさ調整機能を備えたプログラム可能なマルチチャネルなどが含まれます。

STのLEDドライバの製品ポートフォリオには、以下が含まれています。

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Programmable 12-channel RGB-LED Driver with high current accuracy

With patented features to prevent distracting artefacts in “color-chasing” or “deep breathing” LED animation effects, LED1202 enables smoother and more natural interactions with smart-home devices, wearable electronics, and small appliances.

The output current can be adjusted separately for each channel by 8-bit analog dimming control up to 20 mA per channel and 12-bit internal PWM dimming control. With 12 output channels, a single LED1202 can drive four RGB LEDs running up to eight programmable patterns and stored sequences. An innovative synchronization feature allows connecting up to eight LED1202 drivers to control larger LED arrays.

The STEVAL-LLL007V1 evaluation kit is available to support evaluation of the LED1202 and aids development of new products and lighting sequences.

All-in-one high-voltage LED-lighting control chip for efficient dimming, enhanced accuracy and fast start-up

The HVLED001B contains high-voltage startup and sensing circuitry that simplifies connection to the AC line. Its advanced features support multi-platform reuse and compliance with the latest lighting regulations, and include:

  • Very accurate line and load regulation over wide range to ensure constant output voltage or output current
  • Constant output voltage regulation, with no need of optocoupler, ensures voltage remains below recognized 60V safe limit, improving the application robustness
  • Frequency foldback for improved efficiency and regulation at light load with good efficiency at medium load
  • Accurate and smooth dimming
  • Power-conversion efficiency greater than 90%
  • No-load power consumption less than 100mW
  • Power factor greater than 0.9, Total Harmonic Distortion (THD) below 10%
  • Low EMI at light load and medium load
  • Built-in over-current, input over-voltage, brownout, and optocoupler failure protection
  • ST’s smart Auto-Reload Timer (ART) ensures latch-free protection for enhanced safety

New LED driver with direct switch control

The ALED8102S is a low-voltage, 8 low-side channel LED driver. It guarantees up to 20 V output-driving capability and allows users to connect several LEDs in series. In the output stage, the 8 regulated current sources provide 5 to 100 mA constant current to drive the LEDs.

Housed in the power-efficient HTSSOP package, the device also features a thermal protection that forces the device in shutdown in case of over-current.

eDesignSuite

eDesignSuite is a comprehensive set of easy-to-use design-aid utilities ready to help you streamline the system development process with a wide range of ST products.

Power Management Design Center

Thermal-electrical Simulators for Components

Signal Conditioning Design Tool

NFC/RFID Calculators

Choose design tool:

Power Supply Design Tool

SMPS design, by topology, by type and by product
PFC design with analog and digitial control
Supports various PCB configurations
Choose type:
DC/DC
AC/DC
太陽光発電システム

LED Lighting Design Tool

Handles AC-DC and DC-DC design in common topologies
Displays interactive and annotated schematic
Provides current/voltage graphs, Bode plots, efficiency curves and power-loss data
Choose type:
DC/DC
AC/DC

Digital Power Workbench

Provides a step-by-step optimized design of power section and control loop
Generates the STM32Cube embedded software package for custom applications and allows firmware project generation, compatible with multiple STM32 IDEs

Power Tree Designer

Specify input/output power for each node in the tree
Check for consistency
Design each individual node
Choose design tool:

AC Switches Simulator

Select ratings and application waveforms
Get junction temperature and blocking voltage graphs
Search and sort suitable devices

Rectifier Diodes Simulator

Select ratings and application waveforms
Estimate power losses
Search and sort suitable devices

STPOWER Studio

Supports long mission profiles
Provides power loss and temperature graphs
Helps define heatsink thermal properties

Twister Sim

Help select the right ViPOWER Automotive power device
Supports load-compatibility, wiring harness optimization, fault condition impact and diagnostic analysis
Supports various PCB configurations

TVS Simulator

Specify system ratings and surge waveform
Search and sort suitable devices

Estimate

Build simple schematics and firmware inputs in minutes
Quickly generate reliable estimates of battery life, system power consumption and bill of materials costs
Choose design tool:

Active Filters

Handles multi-stage-designs and common topologies
Returns circuit component values
Provides gain, phase and group delay graphs
Low Pass, High Pass and Band Pass

Comparators

Handles most common configurations
Returns circuit components values
Provides I/O signal waveforms
Inverting, Non Inverting, Window

Low side Current Sensing

Returns circuit component values
Provides current error graphs

High side Current Sensing

Provides current error graphs.
Help to select the right High side current sensing and shunt devices.
Choose design tool:

NFC Inductance

Input geometry and substrate properties
Get antenna impedance

UHF Link Budget

Enter forward and reverse link characteristics
The tool returns link budget estimate

NFC Tuning Circuit

Enter antenna parameter and matching target
Select the topology of the matching network
The tool returns component values for the desired design targets