LM21215

활성

2.95~5.5V, 15A, 전압 모드 동기 벅 레귤레이터(주파수 조정 가능)

지금 주문

데이터 시트

document-pdfAcrobat LM21215 2.95-V to 5.5-V, 12-A, Voltage-Mode Synchronous Buck Regulator datasheet (Rev. G) (영어) PDF | HTML

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대안 비교

비교 대상 장치와 유사한 기능

TPS62873

활성

6V, 15A, 적층형, 동기식 벅 컨버터 TPS62873 is a smaller, scalable solution with differential sense I2C option

신규 TPS6287B15

활성

I²C 및 주파수 동기화 옵션을 지원하는 6V 입력, 15A 병렬 처리 가능 동기 벅 컨버터 Scalable solution with smaller total BOM size and improved accuracy

LM21215

활성

데이터 시트

지금 주문

제품 상세 정보

Rating

Catalog

Operating temperature range (°C)

-40 to 125

Topology

Buck

Type

Converter

Iout (max) (A)

15

Vin (min) (V)

2.95

Vin (max) (V)

5.5

Switching frequency (min) (kHz)

500

Switching frequency (max) (kHz)

500

Features

Adjustable current limit, Enable, Power good, Pre-Bias Start-Up, Synchronous Rectification, Tracking

Control mode

Voltage mode

Vout (min) (V)

0.6

Vout (max) (V)

5.5

Iq (typ) (µA)

1500

Duty cycle (max) (%)

100

Rating

Catalog

Operating temperature range (°C)

-40 to 125

Topology

Buck

Type

Converter

Iout (max) (A)

15

Vin (min) (V)

2.95

Vin (max) (V)

5.5

Switching frequency (min) (kHz)

500

Switching frequency (max) (kHz)

500

Features

Adjustable current limit, Enable, Power good, Pre-Bias Start-Up, Synchronous Rectification, Tracking

Control mode

Voltage mode

Vout (min) (V)

0.6

Vout (max) (V)

5.5

Iq (typ) (µA)

1500

Duty cycle (max) (%)

100

HTSSOP (PWP)

20

41.6 mm² 6.5 x 6.4

Integrated 7-mΩ high-side and 4.3-mΩ low-side FET switches
Adjustable current limit
Adjustable output voltage from 0.6 V to V_IN (100% duty cycle capable), ±1% reference
2.95-V to 5.5-V input voltage range
500-kHz fixed switching frequency
Start-up into prebiased loads
Output voltage tracking capability
Wide bandwidth voltage loop error amplifier
Adjustable soft start with external capacitor
Precision enable pin with hysteresis
Integrated OVP, OTP, UVLO, and power good
Thermally enhanced 20-pin HTSSOP exposed pad package
Create a custom design using the LM21215 with the WEBENCH Power Designer

Integrated 7-mΩ high-side and 4.3-mΩ low-side FET switches
Adjustable current limit
Adjustable output voltage from 0.6 V to V_IN (100% duty cycle capable), ±1% reference
2.95-V to 5.5-V input voltage range
500-kHz fixed switching frequency
Start-up into prebiased loads
Output voltage tracking capability
Wide bandwidth voltage loop error amplifier
Adjustable soft start with external capacitor
Precision enable pin with hysteresis
Integrated OVP, OTP, UVLO, and power good
Thermally enhanced 20-pin HTSSOP exposed pad package
Create a custom design using the LM21215 with the WEBENCH Power Designer

The LM21215 is a monolithic synchronous point-of-load buck regulator that is capable of delivering up to 15 A of continuous output current while producing an output voltage down to 0.6 V with outstanding efficiency. The device is optimized to work over an input voltage range of 2.95 V to 5.5 V, making it suitable for a wide variety of low voltage systems. The voltage mode control loop provides high noise immunity, narrow duty cycle capability and can be compensated to be stable with any type of output capacitance, providing maximum flexibility and ease of use.

The LM21215 features internal overvoltage protection (OVP) and resistor-programmable overcurrent protection (OCP) for increased system reliability. A precision enable pin and integrated UVLO allow turn-on of the device to be tightly controlled and sequenced. Start-up inrush currents are limited by both an internally fixed and externally adjustable soft-start circuit. Fault detection and supply sequencing are possible with the integrated power good circuit.

The LM21215 is designed to work well in multi-rail power supply architectures. The output voltage of the device can be configured to track an external voltage rail using the SS/TRK pin. If the output is prebiased at start-up, it will not sink current, allowing the output to smoothly rise past the prebiased voltage. The regulator is offered in a 20-pin HTSSOP package with an exposed pad that can be soldered to the PCB, eliminating the need for bulky heat sinks.

The LM21215 is a monolithic synchronous point-of-load buck regulator that is capable of delivering up to 15 A of continuous output current while producing an output voltage down to 0.6 V with outstanding efficiency. The device is optimized to work over an input voltage range of 2.95 V to 5.5 V, making it suitable for a wide variety of low voltage systems. The voltage mode control loop provides high noise immunity, narrow duty cycle capability and can be compensated to be stable with any type of output capacitance, providing maximum flexibility and ease of use.

The LM21215 features internal overvoltage protection (OVP) and resistor-programmable overcurrent protection (OCP) for increased system reliability. A precision enable pin and integrated UVLO allow turn-on of the device to be tightly controlled and sequenced. Start-up inrush currents are limited by both an internally fixed and externally adjustable soft-start circuit. Fault detection and supply sequencing are possible with the integrated power good circuit.

The LM21215 is designed to work well in multi-rail power supply architectures. The output voltage of the device can be configured to track an external voltage rail using the SS/TRK pin. If the output is prebiased at start-up, it will not sink current, allowing the output to smoothly rise past the prebiased voltage. The regulator is offered in a 20-pin HTSSOP package with an exposed pad that can be soldered to the PCB, eliminating the need for bulky heat sinks.

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4개 모두 보기

	유형	직함		날짜
*	Data sheet	LM21215 2.95-V to 5.5-V, 12-A, Voltage-Mode Synchronous Buck Regulator datasheet (Rev. G)	PDF \| HTML	2022/03/30
	Selection guide	Buck Converter Quick Reference Guide (Rev. B)		2021/04/08
	Selection guide	Power Management Guide 2018 (Rev. R)		2018/06/25
	User guide	AN-2130 LM21215 Evaluation Board (Rev. A)		2013/05/05

설계 및 개발

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평가 보드

LM21215EVM — LM21215용 평가 보드

This evaluation board provides a solution to examine the high efficiency LM21215 buck switching regulator. The LM21215 is capable of driving up to 15A of continuous load current with excellent output voltage accuracy due to its ±1% internal reference. The LM21215 is capable of down converting from (...)

사용 설명서: PDF