Datasheet > LM5041A_15

LM5041A_15

更新时间： 2024-01-22 13:46:01

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德州仪器 - TI		/
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LM5041A Cascaded PWM Controller

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LM5041A_15 数据手册

LM5041A

www.ti.com

SNVS350B –MARCH 2005–REVISED MARCH 2013

LM5041A Cascaded PWM Controller

Check for Samples: LM5041A

FEATURES

DESCRIPTION

The LM5041A PWM controller contains all of the

features necessary to implement either current-fed or

voltage-fed push-pull or bridge power converters.

These “Cascaded” topologies are well suited for

multiple output and higher power applications. The

LM5041A’s four control outputs include: the buck

stage controls (HD and LD) and the push-pull control

outputs (PUSH and PULL). Push-pull outputs are

driven at 50% nominal duty cycle at one half of the

switching frequency of the buck stage and can be

configured for either an overlap time (for current-fed

applications) or a both-off time (for voltage-fed

applications). Push-pull stage MOSFETs can be

driven directly from the internal gate drivers while the

buck stage requires an external driver such as the

LM5102. The LM5041A includes a high-voltage start-

up regulator that operates over a wide input range of

15V to 100V. The PWM controller is designed for

high-speed capability including an oscillator

frequency range up to 1 MHz and total propagation

delays of less than 100ns. Additional features include:

line Under-Voltage Lockout (UVLO), soft-start, an

error amplifier, precision voltage reference, and

thermal shutdown.

•

Internal Start-up Bias Regulator

Programmable Line Under-Voltage Lockout

(UVLO) with Adjustable Hysteresis

•

Current Mode Control

Internal Error Amplifier with Reference

Cycle-by-cycle Over-Current Protection

Leading Edge Blanking

Programmable Push-Pull Overlap or Dead

Time

•

Internal 1.5A Push-Pull Gate Drivers

Programmable Soft-Start

Programmable Oscillator with Sync Capability

Precision Reference

Thermal Shutdown

APPLICATIONS

•

Telecommunication Power Converters

Industrial Power Converters

Multi-Output Power Converters

+42V Automotive Systems

The two differences between the LM5041 and the

LM5041A are: No second level current limit in the 'A'

version No softstart (SS) shutdown comparator in the

'A' version.

PACKAGES

•

TSSOP-16

WSON-16 (5 mm × 5 mm) Thermally Enhanced

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...22

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与LM5041A_15相关器件

型号	品牌	获取价格	描述	数据表
LM5041AMTC	TI	获取价格	LM5041A Cascaded PWM Controller
LM5041AMTC	NSC	获取价格	Cascaded PWM Controller
LM5041AMTC/NOPB	NSC	获取价格	IC SWITCHING CONTROLLER, 685 kHz SWITCHING FREQ-MAX, PDSO16, TSSOP-16, Switching Regulator
LM5041AMTC/NOPB	TI	获取价格	LM5041A Cascaded PWM Controller
LM5041AMTC-NOPB	TI	获取价格	LM5041A Cascaded PWM Controller
LM5041AMTCX	TI	获取价格	LM5041A Cascaded PWM Controller
LM5041AMTCX	NSC	获取价格	Cascaded PWM Controller
LM5041AMTCX/NOPB	TI	获取价格	Cascaded PWM controller with buck Stage disable options 16-TSSOP -40 to 125
LM5041AMTCX/NOPB	NSC	获取价格	IC SWITCHING CONTROLLER, 685 kHz SWITCHING FREQ-MAX, PDSO16, TSSOP-16, Switching Regulator
LM5041AMTCX-NOPB	TI	获取价格	LM5041A Cascaded PWM Controller

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