CATEGORIES

直流-直流开关式转换器

意法半导体的单片式DC-DC开关稳压器支持最高61 V的输入电压,降压转换器能够提供最高6 A的输出电流,开关频率最高2.3 MHz。

DC-DC开关稳压器

 广泛的IC产品组合由高度专业化的产品组成,来满足各种市场以及电源管理需求:高压技术,以及工业汽车所需的高可靠性和稳健性,消费应用所需的紧凑性和高效率

这些开关模式电源器件嵌入了一套完整的保护功能(过流、过压、过温),可提升MTBF,并减少电源转换所需的外部元器件数量。提供了多种封装选项,全都可以实现小型化和高散热性能以满足不同应用的要求。

意法半导体还具有独特且完全隔离、共振的单级直接转换产品,可从48 V直接转换到负载点 (PoL);完全符合Intel VR13和VR12.5规范的CPU/DDR;以及完全可扩展的解决方案,能够管理多达6个交错电池单元,并具有动态电池脱落和脉冲跳频功能。

  

 

Switching converters (DC-DC)
Quick reference guide
技术公告
L3751:6 V至75 V的宽输入电压同步降压控制器
L7983 - 紧凑型设计,60 V@300 mA
DC/DC转换器

用于USB功率传输的新型可编程降压转换器

STPD01可编程同步降压转换器,适合USB功率传输应用。该设备根据USB PD 3.0规范提供USB功率传输系统所需的电压,最高输出功率可达60 W(20V,3A),包括必要的电缆压降补偿电路。

采用QFN24L 3 x 4 mm2封装的STPD01内嵌可编程看门狗以提高整个系统的稳定性和安全性,并提供过电压、过电流和超温保护

可通过I2C接口动态设置不同的输出电压和电流限制值。

可使用评估板,以支持开发人员的设计工作。
STEVAL-2STPD01

38 V 1.5 A / 2 A step-down converters with low quiescent current

The new L6981 and L6982 are  easy -to -use regulators delivering high efficiency capability atacross all loads. The wide input voltage range (3.5 V –- 38V) , makes them also the ideal solution for 24 V industrial bus-powered systems, HVAC power supplies, battery-powered equipment, decentralized intelligent nodes and always-on devices like smart sensors.

Housed in an SO8 package , the L6981 (1.5 A)  and L6982 (2 A) are also based on a peak current mode architecture with internal compensation, to help reduce the overall size and complexity of the end-product designs.

Evaluation boards are available, to support developers in their designs.

STEVAL-L6981CDR ; STEVAL-L6981NDR

STEVAL-L6982CDR ; STEVAL-L6982NDR

New synchronous buck controller to handle extreme step-down ratios

意法半导体的L3751同步降压控制器具有紧凑的尺寸和6V - 75V输入电压范围,适合从工业设备到电池驱动的轻型电动汽车(LEV)的不同应用。

凭借表面可湿的QFN20封装,它还可用于电信和网络设备(通常采用24V和48V总线)。

此外,它还提供STEVAL-L3751V12(100W评估板),帮助设计人员在电源开发过程中加快元件选择。

60 V 300 mA降压转换器,具有10 uA静态电流

意法半导体新推出的L7983是一款紧凑型同步降压转换器,具有低噪声特性和低功耗模式,能够满足噪声敏感型应用要求,并在轻负载下实现最高效率。

L7983具有很宽的输入电压范围,可以在电压范围为12 - 24 V的工业总线上运行,具有很高的安全余量。它也适用于电池供电型应用、工业自动防故障系统、分布式智能节点、家电、机器人和(利用易于使用的低噪声模式的)精确传感应用。

基于L7983的电源和转换器解决方案评估板也可以供货

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
太阳能电池充电器

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