产品概述
主要优势
描述
L6983I是一款专为隔离式降压拓扑设计的器件。能够精确调节初级输出电压，而隔离的次级输出电压则通过给定的变压比生成。无需光耦合器。初级侧的受电能力可达-4.5 A（即使在软启动期间），支持向次级侧进行适当的能量传递，并实现次级输出的可跟踪软启动。控制回路基于峰值电流模式架构，器件在强制PWM模式下工作。390 ns的消隐时间能够有效滤除由变压器漏感引起的振荡，使解决方案更加稳定可靠。
L6983I采用紧凑型QFN16 3x3 mm封装，并集成内部补偿功能，从而将设计复杂性和尺寸降至最低。
开关频率可在200kHz至1MHz范围内编程，同时能够以可选扩展频谱来改善EMC。EN引脚提供使能/禁止功能。
禁止时典型关断电流为2 µA。当EN引脚拉高时，器件启用并启动内部1.3ms软启动。L6983I采用“电源正常”的开路集电极，以监测FB电压。两个功率元件上的逐脉冲电流检测实现了有效的恒定电流保护和热关断，防止热耗散。
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所有功能
- 专为iso-buck拓扑而设计
- 3.5 V至38 V工作输入电压
- 初级输出电压调节/无需光耦合器
- 4.5 A初级侧峰值拉/灌电流
- 峰值电流模式架构，器件在强制PWM模式下工作
- 390 ns消隐时间
- 可编程开关频率为200 kHz至1 MHz。通过低ESR电容器保持稳定：最低2 µF
- 内部补偿网络
- 2 μA关断电流
- 内部软启动
- 使能
- 过电压保护
- 输出电压排序
- 热保护功能
- 以可选扩展频谱改善EMC
- 供电正常
- 与外部时钟同步
- 采用QFN16 (3x3 mm) 封装
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 Management Design Center
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
Power Management Design Center
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 Management Design Center
Power Tree Designer
• Specify input/output power for each node in the tree
• Check for consistency
• Design each individual node
Choose design tool: 
Thermal-electrical Simulators for Components
AC Switches Simulator
• Select ratings and application waveforms
• Get junction temperature and blocking voltage graphs
• Search and sort suitable devices
Thermal-electrical Simulators for Components
Rectifier Diodes Simulator
• Select ratings and application waveforms
• Estimate power losses
• Search and sort suitable devices
Thermal-electrical Simulators for Components
STPOWER Studio
• Supports long mission profiles
• Provides power loss and temperature graphs
• Helps define heatsink thermal properties
Thermal-electrical Simulators for Components
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
Thermal-electrical Simulators for Components
TVS Simulator
• Specify system ratings and surge waveform
• Search and sort suitable devices
Thermal-electrical Simulators for Components
Estimate
• Build simple schematics and firmware inputs in minutes
• Quickly generate reliable estimates of battery life, system power consumption and bill of materials costs
Thermal-electrical Simulators for Components
PCB Thermal Simulator
• Thermal analysis of a PCB from Gerber files.
• Possibility to add heat sources, heat sinks, copper areas and thermal paths.
• Powerful server-side engine for rendering and simulation.
• Thermal results shown graphically via 2D table.
Choose design tool: 
Signal Conditioning 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
Signal Conditioning Design Tool
Comparators
• Handles most common configurations
• Returns circuit components values
• Provides I/O signal waveforms
• Inverting, Non Inverting, Window
Signal Conditioning Design Tool
Low side Current Sensing
• Returns circuit component values
• Provides current error graphs
Signal Conditioning Design Tool
High side Current Sensing
• Provides current error graphs.
• Help to select the right High side current sensing and shunt devices.
Choose design tool: 
NFC/RFID Calculators
NFC Inductance
• Input geometry and substrate properties
• Get antenna impedance
NFC/RFID Calculators
UHF Link Budget
• Enter forward and reverse link characteristics
• The tool returns link budget estimate
NFC/RFID Calculators
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
Power Management Design Center
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
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EDA符号、封装和3D模型
意法半导体 - L6983I
Speed up your design by downloading all the EDA symbols, footprints and 3D models for your application. You have access to a large number of CAD formats to fit with your design toolchain.
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符号
封装
3D模型
所有资源
| 资源标题 | 版本 | 更新时间 |
|---|
SIMPLIS models (1)
| 资源标题 | 版本 | 更新时间 | ||
|---|---|---|---|---|
| ZIP | 2024.01 | 16 Apr 2024 | 16 Apr 2024 |
样片和购买
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| 产品型号 | 供货状态 | Budgetary Price (US$)*/Qty | 从ST订购 | Order from distributors | 包 | 包装类型 | RoHS | Country of Origin | ECCN (US) | ECCN (EU) | Operating Temperature (°C) (min) | Operating Temperature (°C) (max) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| L6983IQTR | 批量生产 | 1.03 / 10k | 6 distributors | QFPN 3X3X0.80 16L PITCH 0.50 | Tape and Reel | CHINA | EAR99 | NEC |
L6983IQTR 批量生产
Budgetary Price (US$)*/Qty:
1.03 / 10k
包:
QFPN 3X3X0.80 16L PITCH 0.50
包装类型:
Tape and Reel
Country of Origin:
CHINA
ECCN (US):
EAR99
ECCN (EU):
NEC
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