전원 관리 LED 드라이버 백라이트 LED 드라이버

TPS61195

활성

SMBus 인터페이스를 지원하는 LCD 백라이트용 96개 LED 8채널 흰색 LED 드라이버

제품 상세 정보

Number of channels 8 Vin (min) (V) 4.5 Vin (max) (V) 21 Vout (min) (V) 15 Vout (max) (V) 45 Type Inductive Switching frequency (max) (kHz) 1000 Duty cycle (max) (%) 94 LED current per channel (mA) 30 Peak efficiency (%) 94 Topology Boost Features Load Disconnect During Shutdown Operating temperature range (°C) -40 to 85 Rating Catalog
Number of channels 8 Vin (min) (V) 4.5 Vin (max) (V) 21 Vout (min) (V) 15 Vout (max) (V) 45 Type Inductive Switching frequency (max) (kHz) 1000 Duty cycle (max) (%) 94 LED current per channel (mA) 30 Peak efficiency (%) 94 Topology Boost Features Load Disconnect During Shutdown Operating temperature range (°C) -40 to 85 Rating Catalog
WQFN (RUY) 28 16 mm² 4 x 4
  • 4.5V to 21V Input Voltage
  • Integrated 2.5A 50V MOSFET
  • 600kHz to 1MHz Programmable Switching Frequency
  • Adaptive Boost Output for Best Efficiency
  • Designed to Use Small L-C Components
  • Internal Loop Compensation
  • Eight Current Sinks of 30mA
  • Support up to Total 96 LEDs
  • 1% Current Matching
  • PWM and SMBus Brightness Interface
  • 8-bits (256 steps) Brightness Level
  • Programmable Over Voltage Threshold
  • Built-in WLED Open/Short Protection
  • Over Thermal Protection
  • 28L 4×4 WQFN
  • APPLICATIONS
    • Notebook/Netbook LCD Display Backlighting

  • 4.5V to 21V Input Voltage
  • Integrated 2.5A 50V MOSFET
  • 600kHz to 1MHz Programmable Switching Frequency
  • Adaptive Boost Output for Best Efficiency
  • Designed to Use Small L-C Components
  • Internal Loop Compensation
  • Eight Current Sinks of 30mA
  • Support up to Total 96 LEDs
  • 1% Current Matching
  • PWM and SMBus Brightness Interface
  • 8-bits (256 steps) Brightness Level
  • Programmable Over Voltage Threshold
  • Built-in WLED Open/Short Protection
  • Over Thermal Protection
  • 28L 4×4 WQFN
  • APPLICATIONS
    • Notebook/Netbook LCD Display Backlighting

The TPS61195 IC provides highly integrated solutions for large-size LCD backlighting. This device has a built-in high efficiency boost regulator with integrated 2.5A/50V power MOSFET. The eight current sink regulators provide high precision current regulation and matching. In total, the device can support up to 96 LEDs. Unused sinks are disabled by tying them to ground. The boost output automatically adjusts its voltage to the WLED forward voltage to improve efficiency.

The TPS61195 supports multiple brightness dimming methods. During PWM dimming, each IFB pin’s current is turned on/off at the duty cycle and frequency determined by an integrated pulse width modulation (PWM). The frequency of this signal is resistor programmable, while the duty cycle is controlled directly either from an external PWM signal input to the DPWM pin or through the SMBUS interface. Additionally, the SMBUS interface provides some operational reporting data such as if one or more strings have failed or if the IC is over-heating. In direct PWM dimming mode, each IFB current is turned on/off at same duty cycle and frequency as the PWM signal input on the DPWM pin. In analog dimming mode, the input PWM duty cycle information is translated to analog signal to control the WLED current signal linearly over 1% to 100% brightness area.

The TPS61195 integrates over-current and short-circuit protection, soft start and over temperature protection circuit. The device also provides programmable output over-voltage protection, and the threshold is adjusted by external resistor divider combination.

The TPS61195 IC has built-in linear regulator for the IC supply. The device is in a 4×4 mm QFN package.

The TPS61195 IC provides highly integrated solutions for large-size LCD backlighting. This device has a built-in high efficiency boost regulator with integrated 2.5A/50V power MOSFET. The eight current sink regulators provide high precision current regulation and matching. In total, the device can support up to 96 LEDs. Unused sinks are disabled by tying them to ground. The boost output automatically adjusts its voltage to the WLED forward voltage to improve efficiency.

The TPS61195 supports multiple brightness dimming methods. During PWM dimming, each IFB pin’s current is turned on/off at the duty cycle and frequency determined by an integrated pulse width modulation (PWM). The frequency of this signal is resistor programmable, while the duty cycle is controlled directly either from an external PWM signal input to the DPWM pin or through the SMBUS interface. Additionally, the SMBUS interface provides some operational reporting data such as if one or more strings have failed or if the IC is over-heating. In direct PWM dimming mode, each IFB current is turned on/off at same duty cycle and frequency as the PWM signal input on the DPWM pin. In analog dimming mode, the input PWM duty cycle information is translated to analog signal to control the WLED current signal linearly over 1% to 100% brightness area.

The TPS61195 integrates over-current and short-circuit protection, soft start and over temperature protection circuit. The device also provides programmable output over-voltage protection, and the threshold is adjusted by external resistor divider combination.

The TPS61195 IC has built-in linear regulator for the IC supply. The device is in a 4×4 mm QFN package.

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기술 자료

star =TI에서 선정한 이 제품의 인기 문서
검색된 결과가 없습니다. 검색어를 지우고 다시 시도하십시오.
6개 모두 보기
유형 직함 날짜
* Data sheet WLED Driver for LCD Backlighting With PWM and SMBus Control Interface datasheet (Rev. A) 2010/08/20
White paper Common LED Functions and LED Driver Design Considerations 2020/09/21
Application note Some Guidelines and Tips for the LED Driver Application 2019/08/14
Application note Performing Accurate PFM Mode Efficiency Measurements (Rev. A) 2018/12/11
Selection guide Power Management Guide 2018 (Rev. R) 2018/06/25
User guide TPS61195EVM-460 Useer's Guide 2010/05/14

설계 및 개발

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

평가 보드

TPS61195EVM-460 — TPS61195 96 LED, 8채널 백색 LED 드라이버용 평가 모듈(LCD 백라이트용)

The TPS61195EVM-460 is a fully assembled and tested circuit for evaluating the TPS61195 Adjustable, 8-Channel White LED Driver IC. If LEDs are not available for connection to the evaluation module, the WLEDEVM-260 board can be ordered.
사용 설명서: PDF
TI.com에서 구매 불가
평가 모듈(EVM)용 GUI

TPS61195EVM-SW TPS61195EVM-SW Software Download

The TPS61195EVM software allows you to control the TPS61195EVM via the SMBus interface. This interface allows the user to:

  • Enable/disable the IC and switch between dimming modes,
  • Control the LED current through the ICs current sink, thereby dimming the attached LEDs and
  • Monitor fault conditions.

(...)

지원되는 제품 및 하드웨어

지원되는 제품 및 하드웨어

제품
백라이트 LED 드라이버
TPS61195 SMBus 인터페이스를 지원하는 LCD 백라이트용 96개 LED 8채널 흰색 LED 드라이버
하드웨어 개발
평가 보드
TPS61195EVM-460 TPS61195 96 LED, 8채널 백색 LED 드라이버용 평가 모듈(LCD 백라이트용)
소프트웨어
지원 소프트웨어
TPS61195EVM-SW TPS61195 평가 모듈 소프트웨어
시뮬레이션 툴

PSPICE-FOR-TI — TI 설계 및 시뮬레이션 툴용 PSpice®

TI용 PSpice®는 아날로그 회로의 기능을 평가하는 데 사용되는 설계 및 시뮬레이션 환경입니다. 완전한 기능을 갖춘 이 설계 및 시뮬레이션 제품군은 Cadence®의 아날로그 분석 엔진을 사용합니다. 무료로 제공되는 TI용 PSpice에는 아날로그 및 전력 포트폴리오뿐 아니라 아날로그 행동 모델에 이르기까지 업계에서 가장 방대한 모델 라이브러리 중 하나가 포함되어 있습니다.

TI 설계 및 시뮬레이션 환경용 PSpice는 기본 제공 라이브러리를 이용해 복잡한 혼합 신호 설계를 시뮬레이션할 수 있습니다. 레이아웃 및 제작에 (...)
패키지 CAD 기호, 풋프린트 및 3D 모델
WQFN (RUY) 28 Ultra Librarian

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

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