开关稳压器
ADI公司提供各种升压式、降压式和反相式开关稳压器。这些稳压器能够产生固定或可调输出电压，并且能够提供高达2 A的输出电流。此外具有低电池电量检测器、用户可调限流、各种开关频率以及较少的外部器件等特性。这种多功能系列产品高度集成，旨在将外部器件降至最少，以满足空间受限应用的需要。
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最新优势资源
设计笔记
- 新 Precise Photovoltaic I-V Characterization
- 新 42 V, 2 A/3 A Peak Synchronous Step-Down Regulators with 2.5 µA Quiescent Current and Ultralow EMI Emission
- 新 SEPIC, Boost, Inverting, and Flyback Controller Solves the Voltage Drop Problem of High Impedance, Long Length Industrial Power Lines
- 新 High Efficiency, 20 A, Monolithic Silent Switcher 2 Regulator for SoC and Microprocessor Applications
- 新 High Voltage LTC3892 Family of Controllers Reduces DC-to-DC Converter Cost and Size
- 新 42V Monolithic Synchronous Step-Down Regulators with 2.5µA Quiescent Current and Ultralow EMI
- 新 Low EMI, Silent Switcher, 1.2A µModule Regulator in 4mm × 4mm × 1.92mm BGA Package
- 新 Monolithic 65V , 8A Step-Down Regulators with Fast Transient Response and Ultralow EMI Emissions
技术文章
- 新 Two Steps to High Voltages
- 新 1000 V Output, No-Opto, Isolated Flyback Converter
- 新 Minimizing Emissions of a SEPIC Converter
- Meet Green Standards in 24VAC and 12VAC Lighting Systems: Replace Halogen Bulbs with LEDs Driven by High Power Factor, High Efficiency Converter
- 新 Silent Switcher µModule Regulators Quietly Power GSPS Sampling ADCs in Half the Space
- Three Bucks Plus a Boost Controller Meet the Stringent Requirements of Wide-Range VIN Automotive Applications
- 新 Tiny, High Efficiency Monolithic Regulators Power Advanced SoCs and Microprocessors Feature Silent Switcher 2 Technology for Low EMI
- Self-Driving Cars—Are Power Systems up to the Task?
- 面向汽车和工业应用的40 V输入、3.5 A Silent Switcher μModule稳压器
- Monolithic No-Opto Isolated Flyback Converter Provides Versatile Solution
- LT8650S Demo Board | Dual Channel 42V, 4A Synchronous Step-Down Silent Switcher 2
- Powering High Speed Analog-to-Digital Converters with Switching Power Supplies
- LTC3779EFE Demo Board | 16V ≤ VIN ≤ 120V, VOUT = 48V @ 10A at up to 99% Efficiency
- 具可调栅极驱动的 60V、低 IQ、双输出同步降压型控制器
- Low EMI Power Solutions and Electromagnetic Compatibility (EMC) Standards
- LT8310 / LT1431 具 Opto 反馈功能的 92W 隔离型正激式转换器；VIN = 48V, VOUT = 54V/1.7A
- 高电压、高效率正至负转换器
- No-Opto Flyback DC/DC Converters & Snubber Protection Circuits
- 采用 LT8614 和 LT3083 / LT6015 的混合宽调光比线性 LED 电流控制器
- LT3759 可在低至 1.6V 电压条件下工作的宽输入电压、48V (在 >100mA) 输出升压型转换器
- How NOT to Damage Your Switching Regulator Demo Board
- No-Opto Isolated Flyback Converters
- Differences Between the Ćuk Converter and the Inverting Charge Pump Converter
- 给 Altera Arria 10 FPGA 和 Arria 10 SoC 供电：经过测试和验证的电源管理解决方案
- 具相位扩展器的 VID 控制器可为最新一代的 FPGA、ASIC 和处理器提供 120A 电源
- Spread Spectrum Frequency Modulation Reduces EMI
- A New Era in Space Products - Radiation Tolerant
- 面向工业、电信和汽车环境的坚固型 140V VIN、400mA 降压型稳压器
- 具可变输出的正至负转换器
- Data Backup Solution for 1mm, Low Profile Industrial Applications
- LTC3890 和 LTC4000 具有电池后备功能的 60V 输入电源
- LT3753 9V-15V 输入至 54V/3A 隔离型正激式转换器
- LT3798 符合能源之星标准的 5V、2A 隔离型转换器
- LT3752 / LT8311 具有高轻负载效率的 48Vin、24Vout 有源箝位正激式转换器
- LT8310 和 LT1431 具 Opto 反馈功能的 81W 隔离型非同步正激式转换器
- LT3790 98% 高效 240W (24V/10A) 并联稳压器
- 具有 4V 至 150V 宽输入电压范围的高效率 100mA 同步降压型转换器
- 采用 LT8301 和耦合电感器的微型隔离式解决方案
- LTspice: 变压器仿真的简单步骤
- Wide Input Voltage Range Boost/Inverting/SEPIC Controller Works Down to an Input Voltage of 1.6V
- 65V, 500mA Step-Down Converter Fits Easily into Automotive and Industrial Applications
- Micropower Isolated Flyback Converter with Input Voltage Range from 6V to 100V
- Inverting DC/DC Controller Converts a Positive Input to a Negative Output with a Single Inductor
- LTC7800EUDC Demo Board With GaNFETS/500kHz | 30V ≤ VIN ≤ 55V; VOUT = 12V @ 20A
- AN168 - Implementing Fast Telemetry with Power System Management Controllers
- AN170 - Honing the Adjustable Compensation Feature of Power System Management Controllers
- 可在 2MHz 提供 95% 效率的 42V 同步降压
- 选择合适的无源和分立元件以实现最高系统性能
- 设计开关电源中使用的 二级输出滤波器
- 在功耗敏感型应用中利用高效率 超低功耗开关稳压器为精密SAR ADC供电
- ADIsimPower Provides Robust, Customizable DC-DC Converter Designs
- MS-2437: 降压调节器变身为智能LED驱动器 PDF
- Optimizing Power Systems for Portable Electronic Devices
- 利用开关电源为高速模数转换器供电 PDF
LT Journal
模拟对话
- 新 突破约束：基于简单降压控制器的精密双极性电源设计
- 新 FPGA电源的“护理和喂养”：成功的道与因
- 带有次级LC滤波器的电流模式降压转换器的建模与控制
- 汽车USB Type-C电源解决方案： 1平方英寸的45 W、2 MHz降压-升压控制器
- 60 V和100 V、低IQ升压/SEPIC/反相转换器，适用于紧凑、高效率、低EMI电源
- 在汽车启停系统中为信息娱乐设备供电
在线研讨会
应用笔记
- AN170 - Honing the Adjustable Compensation Feature of Power System Management Controllers PDF
- AN168 - Implementing Fast Telemetry with Power System Management Controllers PDF
- AN166 - In Flight Update with Linduino PDF
- AN155 - Fault Log Decoding with Linduino PSM PDF
- AN-1329：面向可调低压差稳压器的降噪网络 (Rev. 0) PDF
- AN152 - Power System Management Addressing PDF
- AN153 - 用于电源系统管理的 Linduino PDF
- AN145 - Overview of the EEPROM in LTC PSM Devices PDF
- AN118 - High Voltage, Low Noise, DC/DC Converters PDF
- AN149 - 开关模式电源的建模和环路补偿设计 PDF
- AN119A - Powering Complex FPGA-Based Systems Using Highly Integrated DC/DC uModule Regulator Systems PDF
- AN-1269: 采用ADP2441/ADP2442同步降压DC-DC稳压器设计反相电源 (Rev. 0) PDF
- AN144 - Reduce EMI and Improve Efficiency with Silent Switcher Designs PDF
- AN140 - 线性稳压器和开关模式电源的基本概念 PDF
- AN-1144: 测量开关稳压器中的输出纹波和开关瞬变 (Rev. 0) PDF
- AN126 - 2-Wire Virtual Remote Sensing for Voltage Regulators - Clairvoyance Marries Remote Sensing PDF
- AN-1168: 采用ADP2384/ADP2386同步降压DC-DC稳压器设计反相电源 (Rev. 0) PDF
- AN137 - Accurate Temperature Sensing with an External P-N Junction PDF
- AN136 - PCB Layout Considerations for Non-Isolated Switching Power Supplies PDF
- AN-1126：在减少应力的同时获得更大升压：SEPIC乘法升压转换器 (Rev. 0) PDF
- AN-1149: How to Apply DC-to-DC Step-Down/Step-Up (Buck/Boost) Regulators (Rev. 0) PDF
- AN135 - Implementing Robust PMBus System Software for the LTC3880 PDF
- AN-1141: 用开关调节器为双电源精密ADC供电 (Rev. 0) PDF
- AN-1132: 如何运用DC-DC升压调节器 (Rev. 0) PDF
- AN133 - A Closed-Loop, Wideband, 100A Active Load PDF
- AN-1125: 如何运用DC-DC降压调节器 (Rev. 0) PDF
- AN119B - Powering Complex FPGA-Based Systems Using Highly Integrated DC/DC uModule Regulator Systems PDF
- AN-1099: ADI公司LDO电容选型指南 (Rev. 0) PDF
- AN117 - DC/DC uModule Regulator Printed Circuit Board Design Guidelines PDF
- AN-1083: 利用开关调节器ADP2300和ADP2301设计反相降压/升压转换器 (Rev. A) PDF
- AN125 - Using the LTM2881 as an Isolated 5V Power Supply PDF
- AN122 - Diode Turn-On Time Induced Failures in Switching Regulators PDF
- AN101 - Minimizing Switching Regulator Residue in Linear Regulator Outputs PDF
- AN25 - Switching Regulators for Poets: A Gentle Guide for the Trepidatious PDF
解决方案通报和手册
设计工具
视频
- LTC7821：混合式同步降压型控制器
- LTM8002: High Efficiency, Ultra Low EMI Step-Down Power µModule
- LTC7821：混合式同步降压型控制器
- 为高端FPGA和μProcessor供电时面临的三大设计挑战
- ADI在工业4.0应用方面的领先技术
- 具电源系统管理功能的超薄型 µModule 稳压器
- 简化您的高电压 DC/DC 转换器以延长电池寿命
- 105V、2.3A、低 EMI 同步降压型稳压器
- 新 用于状态监控的新一代传感器
- 带电源系统管理的超薄型μModule稳压器
- ADI公司第4代μModule稳压器简介
- 工业4.0不仅仅是一个愿景，它是一个已经出发的旅程
- 新 Silent Switcher µModule 稳压器为 GSPS 采样 ADC 供电
- 介绍 Analog Devices 的第 4 代µModule 稳压器
- LTM8002：高效率、超低 EMI 降压型电源 µModule
- Silent Switcher 2代演示
- 开关稳压器的功率损耗
- 100V、双向多相同步降压或升压型控制器
- 采用低 Iq No-Opto 反激式 IC 的简单、紧凑和高效隔离式电源
- LTM8050 均流和负载瞬态性能
- LTM8050 负输出
- 30Kw DC/DC充电器
新闻
用户手册
- UG-407: ADP2441 Evaluation Board PDF
- UG-439: Evaluation Board for the ADP5034 TSSOP Micro Power Management Unit (PMU) (Rev. A) PDF
- UG-466: Evaluation Board for the ADP2384/ADP2386, 20 V, 4 A/6 A Synchronous Step-Down DC-to-DC Regulators PDF
- UG-706: ADIsimPE Quick Start Guide (Rev. A) PDF
- UG-654：用于ADP5133微型PMU的评估板 PDF
- UG-492：评估集成反馈的iCoupler ADuM4470、ADuM4471、ADuM4472、ADuM4473和ADuM4474隔离式开关调节器 PDF
- UG-525: Inverting Buck-Boost Evaluation Board for the ADP2386, 20 V, 6 A Synchronous Step-Down DC-to-DC Regulator PDF
- UG-311: Reliability Handbook PDF
- UG-504：集成低端驱动器的20 V、4 A/6 A同步降压稳压器ADP2380和ADP2381评估板 PDF
- UG-488: Evaluating the ADP1606/ADP1607 2 MHz, Synchronous Boost, DC-to-DC Converters PDF
- UG-456: Evaluation Board for the ADP2442 36 V, 1 A, Synchronous, Step-Down DC-to-DC Regulator with External Clock Synchronization PDF
- UG-400: ezLINX™ iCoupler® 隔离接口开发环境 PDF
- UG-437: Evaluating the ADP1614 650 kHz/1.3 MHz, 4 A, Step-Up, PWM, DC-to-DC Switching Converter PDF
- UG-402: iCoupler ADuM3070 Isolated Switch Regulator With Integrated Feedback Evaluation Board PDF
- UG-220: RedyKit™ for the ADP2370 Buck Regulator PDF
- UG-219: Evaluating the ADP2370/ADP2371 Buck Regulators PDF
- UG-374: Evaluation Board for the ADP2325, Dual 5 A, 20 V, Synchronous Step-Down Regulator with Integrated High-Side MOSFET PDF
- UG-329: Evaluation Board for the ADP2164 Step-Down Regulator PDF
- UG-310: Evaluation Board for the ADP2323, Dual 3 A, 20 V, Synchronous Step-Down Regulator with Integrated High-Side MOSFET PDF
- • UG-270：800 mA、3 MHz降压调节器评估板 PDF
- • UG-249：800 mA、3 MHz降压调节器评估板 PDF
- UG-122：评估降压和LDO组合调节器ADP2140 PDF
- UG-198: Evaluating the ADP2125 Low Profile, 6 MHz, Step-Down Converter PDF
- UG-199: 评估ADP2121 6 MHz、降压转换器 PDF
- • UG-188：降压调节器ADP2119/ADP2120评估板用户指南 PDF
- • UG-179：ADP2300/ADP2301评估板用户指南 PDF
- • UG-189：ADP2302/ADP2303评估板用户指南 PDF
- UG-089: RedyKit for the ADP2140 PDF
- • UG-039：用于降压转换器ADP2108的RedyKit用户指南 PDF
- UG-038：用于ADP2504的RedyKit用户指南 PDF
- UG-060: Evaluation Board for the ADP2503/ADP2504, 600 mA/1000 mA, 2.5 MHz Buck-Boost DC-to-DC Converters PDF
参考电路
非常见问题解答
开关稳压器
| SortOrder | Part# | Number of Outputs | Vin (min) (V) | Vin (max) (V) | Output Current (typ) (A) | Switch Current (typ) (A) | Monolithic | Isupply (typ) (A) | Topology | Price (1000+) ($ US) |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | LTC7151S | 1 | 3.1 | 20 | 15 | 18 | Yes | 2 | Buck | $3.75 (LTC7151SEV#PBF) |
| 2 | LTC3889 | 2 | 5 | 60 | 20 | 20 | No | 26m | Buck | $7.63 (LTC3889EUKG#PBF) |
| 3 | LTC7840 | 2 | 5.5 | 60 | - | 60 | No | 3m | Boost, Flyback, Sepic | - |
| 4 | LTC3372 | 5 | 4.5 | 60 | 20 | 20 | No | 33µ | Buck | $5.75 (LTC3372EUK#PBF) |
| 5 | LT8708-1 | 1 | 2.8 | 80 | 15 | - | No | 4.7m | Buck-Boost | $6.60 (LT8708EUHG-1#PBF) |
| 6 | LT8708 | 1 | 2.8 | 80 | 15 | - | No | 3.9m | Buck-Boost | $6.60 (LT8708EUHG#PBF) |
| 7 | ADP1071-2 | 1 | 4.5 | 60 | - | 1 | Yes | 3.8m | Flyback | $3.50 (ADP1071-2ARWZ) |
| 8 | ADP1071-1 | 1 | 450m | 6 | - | 1 | Yes | 3.8m | Flyback | $3.50 (ADP1071-1ARWZ) |
| 9 | LTM8074 | 1 | 3.2 | 40 | 1.2 | - | Yes | 8µ | Buck | - |
| 10 | LTM8071 | 1 | 3.6 | 60 | 5 | - | Yes | 3µ | Buck | - |
| 11 | LTM8002 | 1 | 3.4 | 40 | 2.5 | - | Yes | 25µ | Buck | $9.12 (LTM8002IY#PBF) |
| 12 | LTM4700 (single output) | 1 | 4.5 | 16 | 100 | - | Yes | 50m | Buck | $133.39 (LTM4700IY) |
| 13 | LTM4700 (dual output) | 2 | 4.5 | 16 | 50 | - | Yes | 50m | Buck | $133.39 (LTM4700IY) |
| 14 | LTC3894 | 1 | 4.5 | 150 | 10 | - | No | 21µ | Buck | $2.55 (LTC3894EFE#PBF) |
| 15 | LTC3310S | 1 | 2.25 | 5.5 | 10 | 16 | Yes | 1.3m | Buck | - |
| 16 | LT8361 | 1 | 2.8 | 60 | - | 2 | Yes | 22µ | Boost, Inverting, Sepic | $3.36 (LT8361EMSE#PBF) |
| 17 | LTM8005 | 1 | 5 | 38 | - | 10 | Yes | 3.5m | Boost, LED Driver | $9.95 (LTM8005EY#PBF) |
| 18 | LTM4686-1 (single output) | 1 | 2.375 | 17 | 20 | 18 | Yes | 20m | Buck | $23.23 (LTM4686EV-1#PBF) |
| 19 | LTM4686-1 (dual output) | 2 | 2.375 | 17 | 10 | 18 | Yes | 20m | Buck | $23.23 (LTM4686EV-1#PBF) |
| 20 | LTM4686 (single output) | 1 | 4.5 | 17 | 20 | 18 | Yes | 20m | Buck | $23.23 (LTM4686EV#PBF) |
| 21 | LTM4686 (dual output) | 2 | 4.5 | 17 | 10 | 18 | Yes | 20m | Buck | $23.23 (LTM4686EV#PBF) |
| 22 | LTM4678 (single output) | 1 | 4.5 | 16 | 50 | 40 | Yes | 20m | Buck | $47.48 (LTM4678EY#PBF) |
| 23 | LTM4678 (dual output) | 2 | 4.5 | 16 | 25 | 40 | Yes | 20m | Buck | $47.48 (LTM4678EY#PBF) |
| 24 | LTM4662 | 2 | 4.5 | 20 | 15 | 22 | Yes | 20m | Buck | $28.75 (LTM4662EY#PBF) |
| 25 | LTM4653 | 1 | 3.1 | 58 | 4 | - | Yes | 450µ | Buck | $12.55 (LTM4653EY#PBF) |
| 26 | LTM4638 | 1 | 3.1 | 20 | 15 | - | Yes | 18m | Buck | - |
| 27 | LTM4626 | 1 | 3.1 | 20 | 12 | - | Yes | 18m | Buck | - |
| 28 | LTC7810 | 2 | 4.5 | 140 | 15 | 15 | No | 78µ | Buck | $5.20 (LTC7810ELXE#PBF) |
| 29 | LTC3777 | 1 | 4.5 | 150 | 10 | - | No | 3.6m | Buck-Boost | $8.40 (LTC3777ELXE#PBF) |
| 30 | LT8642S | 1 | 2.8 | 18 | 10 | 18 | Yes | 230µ | Buck | $4.15 (LT8642SEV#PBF) |
| 31 | ADP2450 | 2 | 4.5 | 36 | - | - | Yes | 1.35m | Boost, Buck | $1.50 (ADP2450ACPZ-1-R7) |
| 32 | LT8650S-1 | 2 | 3 | 42 | 4 | 8.5 | Yes | 3.7µ | Buck | $6.58 (LT8650SHV-1#PBF) |
| 33 | ADP5138 | 5 | 3 | 5.5 | 1 | 1.6 | Yes | 6m | Buck | $2.03 (ADP5138ACPZ-2-R7) |
| 34 | LT8643S-2 | 1 | 3.4 | 42 | 6 | 10 | Yes | 1.7µ | Buck | $4.65 (LT8643SEV-2#PBF) |
| 35 | LT8640S-2 | 1 | 3.4 | 42 | 6 | 10 | Yes | 1.7µ | Buck | $4.65 (LT8640SEV-2#PBF) |
| 36 | LTM4680 | 2 | 4.5 | 16 | 30 | - | Yes | 37m | Buck | - |
| 37 | LTM4646 | 2 | 4.5 | 20 | 10 | - | Yes | 17m | Buck | $18.85 (LTM4646EY#PBF) |
| 38 | LTC7815 | 3 | 2.5 | 38 | 25 | 25 | No | 38µ | Boost, Buck | $4.35 (LTC7815EUHF#PBF) |
| 39 | LT8646S | 1 | 3.4 | 65 | 8 | 14 | Yes | 17µ | Buck | $5.95 (LT8646SEV#PBF) |
| 40 | LT8619 | 1 | 3 | 60 | 1.2 | 1.75 | Yes | 6µ | Buck | $2.65 (LT8619EDD#PBF) |
| 41 | LTM8065 | 1 | 3.4 | 40 | 2.5 | - | Yes | 8µ | Buck | $7.75 (LTM8065EY#PBF) |
| 42 | LTM8063 | 1 | 3.2 | 40 | 2 | - | Yes | 8µ | Buck | $6.95 (LTM8063EY#PBF) |
| 43 | LTM4651 | 1 | 3.6 | 58 | - | 20 | Yes | 450µ | Inverting | $14.75 (LTM4651EY#PBF) |
| 44 | LTM4645 | 1 | 4.7 | 15 | 25 | 30 | Yes | 11m | Buck | $26.23 (LTM4645EY#PBF) |
| 45 | LTC3874-1 | 1 | 4.5 | 38 | 25 | 25 | No | 4.6m | Buck | $2.47 (LTC3874EUF-1#PBF) |
| 46 | LTC3779 | 1 | 4.5 | 150 | 10 | - | No | 3.6m | Buck-Boost | $5.95 (LTC3779EFE#PBF) |
| 47 | LT8711 | 1 | 4.5 | 42 | - | 20 | No | 15µ | Boost, Buck, Buck-Boost, Sepic, Zeta | $2.30 (LT8711EUDC#PBF) |
| 48 | LT8650S | 2 | 3 | 42 | 4 | 8.5 | Yes | 3.7µ | Buck | $5.75 (LT8650SEV#PBF) |
| 49 | ADP1074 | 1 | 1 | 60 | - | - | No | - | Flyback, Forward | $3.96 (ADP1074ARWZ) |
| 50 | LTM4622A | 2 | 3.6 | 20 | 2 | 4 | Yes | 500µ | Buck | $7.15 (LTM4622AEV#PBF) |
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