LM5122

AKTIV

Mehrphasenfähiger synchroner Strommodus-Aufwärtscontroller mit breitem VIN-Bereich, 3-65 V

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Datenblatt

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

LM5122

AKTIV

Datenblatt

Jetzt bestellen

Produktdetails

Vin (min) (V)

3

Vin (max) (V)

65

Operating temperature range (°C)

-40 to 125

Control mode

current mode

Topology

Boost, Flyback, Forward, SEPIC

Rating

Catalog

Vout (min) (V)

3

Vout (max) (V)

100

Features

Enable, Frequency synchronization, Phase Interleaving, Synchronous Rectification, UVLO adjustable

Iq (typ) (µA)

4000

Duty cycle (max) (%)

100

Vin (min) (V)

3

Vin (max) (V)

65

Operating temperature range (°C)

-40 to 125

Control mode

current mode

Topology

Boost, Flyback, Forward, SEPIC

Rating

Catalog

Vout (min) (V)

3

Vout (max) (V)

100

Features

Enable, Frequency synchronization, Phase Interleaving, Synchronous Rectification, UVLO adjustable

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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Technische Dokumentation

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	Typ	Titel		Datum
*	Data sheet	LM5122 Wide-Input Synchronous Boost Controller With Multiple Phase Capability datasheet (Rev. H)	PDF \| HTML	09 Jun 2017
	Application note	Analysis and Solution of the LM5122 Bypass Function Loss		03 Jun 2024
	Technical article	How to add overvoltage protection to a synchronous boost controller	PDF \| HTML	17 Sep 2018
	White paper	An overview of radiated EMI specifications for power supplies		05 Jun 2018
	White paper	An overview of conducted EMI specifications for power supplies		01 Feb 2018
	Application brief	Improve DC/DC Regulator EMI for Free with Optimized Power Stage Layout		13 Nov 2017
	Analog Design Journal	Designing the front-end DC/DC conversion stage to withstand automotive transient		18 Jan 2017
	White paper	Under the Hood of a Multiphase Synchronous Rectified Boost Converter		02 Okt 2015
	White paper	Under the Hood of a Multiphase Synchronous Rectified Boost Converter (PPT)		02 Okt 2015
	Technical article	Power Tips: Synchronize your SEPIC	PDF \| HTML	29 Apr 2015
	White paper	How to design boost, SEPIC or flyback regulators with wide VIN power ICs		29 Jul 2014
	Application note	Automated Frequency Response Analyzer		09 Okt 2013
	White paper	Wide VIN power management ICs simplify white paper (Rev. A)		19 Sep 2013
	EVM User's guide	LM5122EVM-1PH User's Guide		22 Apr 2013
	EVM User's guide	LM5122EVM-2PH User's Guide		22 Apr 2013

Design und Entwicklung

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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 (...)

Benutzerhandbuch: PDF

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Evaluierungsplatine

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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 (...)

Benutzerhandbuch: PDF

Nicht verfügbar auf TI.com

Evaluierungsplatine

PMLKBOOSTEVM — TI-PMLK-Aufwärts-Experimentierplatine mit TPS55340 und LM5122

The TI-PMLK Boost Experiment Board is part of the TI Power Management Lab Kit (TI-PMLK) series. TI-PMLK series provides hands on learning to reinforce power supply knowledge. The modular format allows users to customize the TI-PMLK series experience in a way that makes the most impact on (...)

Benutzerhandbuch: PDF