홈 전원 관리 AC/DC & DC/DC controllers (external FET)
홈
전원 관리
AC/DC & DC/DC controllers (external FET)

TPS40345

활성

비용 최적화된 애플리케이션을 위한 3V~20V, 25A, 동기 벅 컨트롤러

지금 주문
데이터시트

TPS40345

활성
데이터시트 지금 주문

제품 상세 정보

Vin (min) (V) 3 Vin (max) (V) 20 Iout (max) (A) 25 Operating temperature range (°C) -20 to 85 Control mode Voltage mode Rating Catalog Vout (min) (V) 0.6 Vout (max) (V) 18 Iq (typ) (A) 0.0025 Duty cycle (max) (%) 90
Vin (min) (V) 3 Vin (max) (V) 20 Iout (max) (A) 25 Operating temperature range (°C) -20 to 85 Control mode Voltage mode Rating Catalog Vout (min) (V) 0.6 Vout (max) (V) 18 Iq (typ) (A) 0.0025 Duty cycle (max) (%) 90
VSON (DRC) 10 9 mm² 3 x 3
  • Input Voltage Range From 3 V to 20 V
  • 600-kHz Switching Frequency
  • High- and Low-Side FET RDS(on) Current Sensing
  • Programmable Thermally Compensated OCP Levels
  • Programmable Soft-Start
  • 600-mV, 1.3% Reference Voltage
  • Voltage Feed-Forward Compensation
  • Supports Prebiased Output
  • Frequency Spread Spectrum
  • Thermal Shutdown Protection at 145°C
  • 10-Pin 3-mm × 3-mm VSON Package With Ground Connection to Thermal Pad
  • Input Voltage Range From 3 V to 20 V
  • 600-kHz Switching Frequency
  • High- and Low-Side FET RDS(on) Current Sensing
  • Programmable Thermally Compensated OCP Levels
  • Programmable Soft-Start
  • 600-mV, 1.3% Reference Voltage
  • Voltage Feed-Forward Compensation
  • Supports Prebiased Output
  • Frequency Spread Spectrum
  • Thermal Shutdown Protection at 145°C
  • 10-Pin 3-mm × 3-mm VSON Package With Ground Connection to Thermal Pad

The TPS40345 is a synchronous buck controller that operates from 3-V to 20-V input and which can be used in cost-optimized applications. The controller implements a voltage-mode control architecture with input-voltage feed-forward compensation that responds instantly to a change in input voltage. The switching frequency is fixed at 600 kHz.

The frequency spread spectrum (FSS) feature adds to the switching frequency, significantly reducing the peak EMI noise and making it much easier to comply with EMI standards.

The TPS40345 offers design with a variety of user-programmable functions, including soft-start, overcurrent protection (OCP) levels, and loop compensation.

OCP level may be programmed by a single external resistor connected from the LDRV pin to circuit ground. During initial power on, the TPS40345 enters a calibration cycle, measures the voltage at the LDRV pin, and sets an internal OCP voltage level. During operation, the programmed OCP voltage level is compared to the voltage drop across the low-side FET when it is on to determine whether there is an overcurrent condition. The TPS40345 then enters a shutdown and restart cycle until the fault is removed.

The TPS40345 is a synchronous buck controller that operates from 3-V to 20-V input and which can be used in cost-optimized applications. The controller implements a voltage-mode control architecture with input-voltage feed-forward compensation that responds instantly to a change in input voltage. The switching frequency is fixed at 600 kHz.

The frequency spread spectrum (FSS) feature adds to the switching frequency, significantly reducing the peak EMI noise and making it much easier to comply with EMI standards.

The TPS40345 offers design with a variety of user-programmable functions, including soft-start, overcurrent protection (OCP) levels, and loop compensation.

OCP level may be programmed by a single external resistor connected from the LDRV pin to circuit ground. During initial power on, the TPS40345 enters a calibration cycle, measures the voltage at the LDRV pin, and sets an internal OCP voltage level. During operation, the programmed OCP voltage level is compared to the voltage drop across the low-side FET when it is on to determine whether there is an overcurrent condition. The TPS40345 then enters a shutdown and restart cycle until the fault is removed.
open-in-new 기타 AC/DC & DC/DC controllers (external FET) 찾기
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관심 가지실만한 유사 제품

open-in-new 대안 비교
비교 대상 장치와 유사한 기능
신규 TPS54KB20 활성 4-V to 16-V input, 25-A remote sense synchronous step-down converter Higher power density integrated FET converter solution for up to 25A output current

기술 문서

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모두 보기3
유형 직함 날짜
* Data sheet TPS40345 3-V to 20-V Input Synchronous Buck Controller datasheet PDF | HTML 2017/12/07
User guide TPS40345 Buck Controller Evaluation Module User's Guide (Rev. A) PDF | HTML 2022/01/03
Analog Design Journal Maximizing power density and thermal performance in power-module designs 2018/12/12

설계 및 개발

추가 조건 또는 필수 리소스는 사용 가능한 경우 아래 제목을 클릭하여 세부 정보 페이지를 확인하세요.

평가 보드

TPS40345EVM-353 — TPS40345, 8V~14V 입력, 1.2V 출력 동기 벅 컨트롤러 평가 모듈

The TPS40345EVM-353 evaluation module (EVM) is a synchronous buck converter providing a fixed 1.2-V output at up to 20A from a 12-V input bus.
사용 설명서: PDF | HTML
TI.com에서 구매할 수 없습니다
시뮬레이션 모델

TPS40345 PSpice Transient Model

SLUM612.ZIP (85 KB) - PSpice Model
다운로드
시뮬레이션 모델

TPS40345 Unencrypted PSpice Transient Model

SLUM611.ZIP (9 KB) - PSpice Model
다운로드
패키지 핀 다운로드
VSON (DRC) 10 옵션 보기
TI의 평가 항목에 대한 표준 약관이 적용됩니다.

주문 및 품질

포함된 정보:
  • RoHS
  • REACH
  • 디바이스 마킹
  • 납 마감/볼 재질
  • MSL 등급/피크 리플로우
  • MTBF/FIT 예측
  • 물질 성분
  • 인증 요약
  • 지속적인 신뢰성 모니터링
포함된 정보:
  • 팹 위치
  • 조립 위치

지원 및 교육

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포럼 주제 모두 보기(영문)

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