LM5122

現行

具多相功能的 3-65V 大範圍 Vin、電流模式同步升壓控制器

立即訂購

產品規格表

document-pdfAcrobat LM5122 Wide-Input Synchronous Boost Controller With Multiple Phase Capability datasheet (Rev. H) (英文) PDF | HTML

LM5122

現行

產品規格表

立即訂購

產品詳細資料

Rating

Catalog

Topology

Boost, Flyback, Forward, SEPIC

Vin (max) (V)

65

Vin (min) (V)

3

Vout (max) (V)

100

Vout (min) (V)

3

Control mode

current mode

Features

Enable, Frequency synchronization, Phase interleaving, Synchronous rectification, UVLO adjustable

Operating temperature range (°C)

-40 to 125

Iq (typ) (µA)

4000

Duty cycle (max) (%)

100

Rating

Catalog

Topology

Boost, Flyback, Forward, SEPIC

Vin (max) (V)

65

Vin (min) (V)

3

Vout (max) (V)

100

Vout (min) (V)

3

Control mode

current mode

Features

Enable, Frequency synchronization, Phase interleaving, Synchronous rectification, UVLO adjustable

Operating temperature range (°C)

-40 to 125

Iq (typ) (µA)

4000

Duty cycle (max) (%)

100

HTSSOP (PWP)

24

49.92 mm² 7.8 x 6.4

HTSSOP (PWP)

20

41.6 mm² 6.5 x 6.4

Maximum Input Voltage: 65 V
Minimum Input Voltage: 3 V (4.5 V for Start-Up)
Output Voltage up to 100 V
Bypass (V_OUT = V_IN) Operation
1.2-V Reference with ±1% Accuracy
Free-Run and Synchronizable Switching to 1 MHz
Peak-Current-Mode Control
Robust 3-A Integrated Gate Drivers
Adaptive Dead-Time Control
Optional Diode-Emulation Mode
Programmable Cycle-by-Cycle Current Limit
Hiccup-Mode Overload Protection
Programmable Line UVLO
Programmable Soft Start
Thermal Shutdown Protection
Low Shutdown Quiescent Current: 9 µA
Programmable Slope Compensation
Programmable Skip-Cycle Mode Reduces Standby Power
Allows External VCC Supply
Inductor DCR Current Sensing Capability
Multi-phase Capability
Thermally Enhanced 20 or 24-Pin HTSSOP
Create a Custom Design Using the LM5122 With the WEBENCH^® Power Designer

Maximum Input Voltage: 65 V
Minimum Input Voltage: 3 V (4.5 V for Start-Up)
Output Voltage up to 100 V
Bypass (V_OUT = V_IN) Operation
1.2-V Reference with ±1% Accuracy
Free-Run and Synchronizable Switching to 1 MHz
Peak-Current-Mode Control
Robust 3-A Integrated Gate Drivers
Adaptive Dead-Time Control
Optional Diode-Emulation Mode
Programmable Cycle-by-Cycle Current Limit
Hiccup-Mode Overload Protection
Programmable Line UVLO
Programmable Soft Start
Thermal Shutdown Protection
Low Shutdown Quiescent Current: 9 µA
Programmable Slope Compensation
Programmable Skip-Cycle Mode Reduces Standby Power
Allows External VCC Supply
Inductor DCR Current Sensing Capability
Multi-phase Capability
Thermally Enhanced 20 or 24-Pin HTSSOP
Create a Custom Design Using the LM5122 With the WEBENCH^® Power Designer

The LM5122 is a multi-phase capable synchronous boost controller intended for high-efficiency synchronous boost regulator applications. The control method is based upon peak-current-mode control. Current-mode control provides inherent line feed forward, cycle-by-cycle current limiting, and ease of loop compensation.

The switching frequency is programmable up to 1 MHz. Higher efficiency is achieved by two robust N-channel MOSFET gate drivers with adaptive dead-time control. A user-selectable diode-emulation mode also enables discontinuous-mode operation for improved efficiency at light load conditions.

An internal charge pump allows 100% duty cycle for high-side synchronous switch (bypass operation). A 180° phase shifted clock output enables easy multi-phase interleaved configuration. Additional features include thermal shutdown, frequency synchronization, hiccup-mode current limit, and adjustable line undervoltage lockout.

The LM5122 is a multi-phase capable synchronous boost controller intended for high-efficiency synchronous boost regulator applications. The control method is based upon peak-current-mode control. Current-mode control provides inherent line feed forward, cycle-by-cycle current limiting, and ease of loop compensation.

The switching frequency is programmable up to 1 MHz. Higher efficiency is achieved by two robust N-channel MOSFET gate drivers with adaptive dead-time control. A user-selectable diode-emulation mode also enables discontinuous-mode operation for improved efficiency at light load conditions.

An internal charge pump allows 100% duty cycle for high-side synchronous switch (bypass operation). A 180° phase shifted clock output enables easy multi-phase interleaved configuration. Additional features include thermal shutdown, frequency synchronization, hiccup-mode current limit, and adjustable line undervoltage lockout.

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	類型	標題		日期
*	Data sheet	LM5122 Wide-Input Synchronous Boost Controller With Multiple Phase Capability datasheet (Rev. H)	PDF \| HTML	2017年 6月 9日
	Application note	Analysis and Solution of the LM5122 Bypass Function Loss		2024年 6月 3日
	Technical article	How to add overvoltage protection to a synchronous boost controller	PDF \| HTML	2018年 9月 17日
	White paper	An overview of radiated EMI specifications for power supplies		2018年 6月 5日
	White paper	An overview of conducted EMI specifications for power supplies		2018年 2月 1日
	Application brief	Improve DC/DC Regulator EMI for Free with Optimized Power Stage Layout		2017年 11月 13日
	Analog Design Journal	Designing the front-end DC/DC conversion stage to withstand automotive transient		2017年 1月 18日
	User guide	PMLK Boost Experiment Book (Rev. A)		2016年 8月 31日
	White paper	Under the Hood of a Multiphase Synchronous Rectified Boost Converter		2015年 10月 2日
	White paper	Under the Hood of a Multiphase Synchronous Rectified Boost Converter (PPT)		2015年 10月 2日
	Technical article	Power Tips: Synchronize your SEPIC	PDF \| HTML	2015年 4月 29日
	White paper	How to design boost, SEPIC or flyback regulators with wide VIN power ICs		2014年 7月 29日
	Application note	Automated Frequency Response Analyzer		2013年 10月 9日
	White paper	Wide VIN power management ICs simplify white paper (Rev. A)		2013年 9月 19日

設計與開發

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開發板

LM5122EVM-1PH — LM5122EVM-1PH 寬輸入電壓同步升壓控制器評估模組

The LM5122EVM-1PH evaluation module (EVM) provides the design engineer with a fully functional synchronous boost converter to evaluate the Texas Instruments LM5122 synchronous boost controller IC. The EVM provides 24V output at up to 4.5A current from a 9V to 20V input. The EVM is designed to (...)

使用指南: PDF

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開發板

LM5122EVM-2PH — LM5122EVM-2PH 寬輸入電壓同步升壓控制器評估模組

The LM5122EVM-2PH evaluation module (EVM) provides the design engineer with a fully functional dual phase synchronous boost converter to evaluate the Texas Instruments LM5122 synchronous boost controller IC. The EVM provides 28V output at up to 7A current from a 9V to 20V input. The EVM is (...)

使用指南: PDF

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開發板

PMLKBOOSTEVM — 使用 TPS55340 和 LM5122 的 TI-PMLK 升壓實驗電路板

TI-PMLK 升壓實驗板是 TI 電源管理實驗套件 (TI-PMLK) 系列的一部分。TI-PMLK 系列提供動手實作的學習方式，以加強對電源供應知識的理解。模組化格式允許使用者依自身需求客製化 TI-PMLK 系列的學習體驗，以達到對電源設計理解的最大效益。TI-PMLK 升壓實驗板搭載 TPS55340 與 LM5122。TI-PMLK 升壓實驗手冊涵蓋理論與實驗內容，包括針對穩態、暫態與動態條件的各種測試，模擬實際應用情境。

使用指南: PDF