LM5122

활성

멀티 위상 기능을 지원하는 3~65V의 넓은 Vin, 전류 모드 동기 부스트 컨트롤러

지금 주문

데이터시트

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

LM5122

활성

데이터시트

지금 주문

제품 상세 정보

Vin (min) (V)

3

Vin (max) (V)

65

Iout (max) (A)

20

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

Iq (typ) (A)

0.004

Duty cycle (max) (%)

100

Vin (min) (V)

3

Vin (max) (V)

65

Iout (max) (A)

20

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

Iq (typ) (A)

0.004

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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모두 보기15

	유형	직함		날짜
*	Data sheet	LM5122 Wide-Input Synchronous Boost Controller With Multiple Phase Capability datasheet (Rev. H)	PDF \| HTML	2017/06/09
	Technical article	How to add overvoltage protection to a synchronous boost controller	PDF \| HTML	2018/09/17
	White paper	An overview of radiated EMI specifications for power supplies		2018/06/05
	White paper	An overview of conducted EMI specifications for power supplies		2018/02/01
	Application brief	Improve DC/DC Regulator EMI for Free with Optimized Power Stage Layout		2017/11/13
	Analog Design Journal	Designing the front-end DC/DC conversion stage to withstand automotive transient		2017/01/18
	User guide	PMLK Boost Experiment Book (Rev. A)		2016/08/31
	White paper	Under the Hood of a Multiphase Synchronous Rectified Boost Converter		2015/10/02
	White paper	Under the Hood of a Multiphase Synchronous Rectified Boost Converter (PPT)		2015/10/02
	Technical article	Power Tips: Synchronize your SEPIC	PDF \| HTML	2015/04/29
	White paper	How to design boost, SEPIC or flyback regulators with wide VIN power ICs		2014/07/29
	Application note	Automated Frequency Response Analyzer		2013/10/09
	White paper	Wide VIN power management ICs simplify white paper (Rev. A)		2013/09/19
	EVM User's guide	LM5122EVM-1PH User's Guide		2013/04/22
	EVM User's guide	LM5122EVM-2PH User's Guide		2013/04/22

설계 및 개발

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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 (...)

사용 설명서: PDF

TI.com에서 구매할 수 없습니다

평가 보드

LM5122EVM-2PH — LM5122EVM-2PH 넓은 Vin 동기 부스트 컨트롤러 평가 모듈

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 (...)

사용 설명서: PDF

TI.com에서 구매할 수 없습니다

평가 보드

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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 (...)

사용 설명서: PDF