전력 관리 LED 드라이버 차량용 LED 드라이버

TPS92643-Q1

활성

오토모티브 3A 동기식 벅 적외선 LED 드라이버

제품 상세 정보

Number of channels 1 Topology Buck Rating Automotive Operating temperature range (°C) -40 to 125 Vin (min) (V) 5.5 Vin (max) (V) 36 Vout (min) (V) 4.5 Vout (max) (V) 33 Iout (max) (A) 3 Iq (typ) (mA) 1000 Switching frequency (max) (kHz) 2200 Features Fault Detection
Number of channels 1 Topology Buck Rating Automotive Operating temperature range (°C) -40 to 125 Vin (min) (V) 5.5 Vin (max) (V) 36 Vout (min) (V) 4.5 Vout (max) (V) 33 Iout (max) (A) 3 Iq (typ) (mA) 1000 Switching frequency (max) (kHz) 2200 Features Fault Detection
HTSSOP (PWP) 16 32 mm² (5 mm × 6.4 mm)
  • AEC-Q100 qualified for automotive applications
    • Grade 1: –40°C to 125°C ambient operating temperature
    • Device HBM classification level H1C
    • Device CDM classification level C5
  • Functional Safety-Capable
    • Documentation available to aid functional safety system design
  • Input voltage range: 5.5 V to 36 V
    • Operation down to 5.15 V after start-up
  • Up to 3-A continuous with 4% accuracy
  • Adaptive on-time current control
    • Low offset high-side current sense amplifier
    • Stable with any combination of ceramic, and aluminum capacitors
  • Programmable switching frequency from 100 kHz to 2.2 MHz
  • Advanced dimming operation
    • 1000:1 precision PWM dimming
    • 15:1 precision analog dimming
    • 1.4-kHz internal analog input to PWM duty cycle translation
  • Cycle-by-cycle switch overcurrent protection
  • Open-drain fault indicator output
    • LED short circuit, open circuit and cable harness fault indication
  • Thermal shutdown protection
  • AEC-Q100 qualified for automotive applications
    • Grade 1: –40°C to 125°C ambient operating temperature
    • Device HBM classification level H1C
    • Device CDM classification level C5
  • Functional Safety-Capable
    • Documentation available to aid functional safety system design
  • Input voltage range: 5.5 V to 36 V
    • Operation down to 5.15 V after start-up
  • Up to 3-A continuous with 4% accuracy
  • Adaptive on-time current control
    • Low offset high-side current sense amplifier
    • Stable with any combination of ceramic, and aluminum capacitors
  • Programmable switching frequency from 100 kHz to 2.2 MHz
  • Advanced dimming operation
    • 1000:1 precision PWM dimming
    • 15:1 precision analog dimming
    • 1.4-kHz internal analog input to PWM duty cycle translation
  • Cycle-by-cycle switch overcurrent protection
  • Open-drain fault indicator output
    • LED short circuit, open circuit and cable harness fault indication
  • Thermal shutdown protection

The TPS92643-Q1 is a monolithic, synchronous Buck LED driver with a wide 5.5-V to 36-V operating input voltage range and 40-V tolerance that supports load dump for duration of 400 ms. The TPS92643-Q1 implements an adaptive on-time average current mode control based on inductor valley current detection. The adaptive on-time control provides near constant switching frequency that can be set between 100 kHz and 2.2 MHz. Inductor current sensing and closed-loop feedback enables better than ±4% accuracy over wide input, output and ambient temperature.

The high-performance LED driver can independently modulate LED current using both analog or PWM dimming techniques. Linear analog dimming range with over 15:1 range is obtained by setting the IADJ voltage. PWM dimming of LED current is achieved by directly modulating the UDIM input pin with desired duty cycle or setting the analog voltage at APWM to enable internal analog-to-PWM conversion. The internal PWM generator translates the external analog voltage by comparing it to an internal 1.4-kHz ramp signal.

The TPS92643-Q1 incorporates advanced diagnostic and fault protection featuring: cycle-by-cycle switch current limit, bootstrap undervoltage, LED open, LED short and thermal shutdown.

The TPS92643-Q1 is available in a 6.6-mm × 5.1-mm thermally-enhanced 16-pin HTSSOP package with 0.65-mm lead pitch.

The TPS92643-Q1 is a monolithic, synchronous Buck LED driver with a wide 5.5-V to 36-V operating input voltage range and 40-V tolerance that supports load dump for duration of 400 ms. The TPS92643-Q1 implements an adaptive on-time average current mode control based on inductor valley current detection. The adaptive on-time control provides near constant switching frequency that can be set between 100 kHz and 2.2 MHz. Inductor current sensing and closed-loop feedback enables better than ±4% accuracy over wide input, output and ambient temperature.

The high-performance LED driver can independently modulate LED current using both analog or PWM dimming techniques. Linear analog dimming range with over 15:1 range is obtained by setting the IADJ voltage. PWM dimming of LED current is achieved by directly modulating the UDIM input pin with desired duty cycle or setting the analog voltage at APWM to enable internal analog-to-PWM conversion. The internal PWM generator translates the external analog voltage by comparing it to an internal 1.4-kHz ramp signal.

The TPS92643-Q1 incorporates advanced diagnostic and fault protection featuring: cycle-by-cycle switch current limit, bootstrap undervoltage, LED open, LED short and thermal shutdown.

The TPS92643-Q1 is available in a 6.6-mm × 5.1-mm thermally-enhanced 16-pin HTSSOP package with 0.65-mm lead pitch.

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관심 가지실만한 유사 제품

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기술 자료

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* 데이터 시트 TPS92643-Q1 Automotive 3-A Synchronous Buck LED Driver datasheet PDF | HTML 2022. 5. 12

설계 및 개발

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평가 보드

TPS92643EVM-204 — 오토모티브 3A 동기 벅 LED 드라이버를 위한 TPS92643-Q1 평가 모듈

TPS92643EVM-204 EVM(평가 모듈)을 이용해 설계자는 고전류 LED 드라이브 용도로 설계된 TPS92643-Q1 3.0A 벅 스위칭 레귤레이터의 작동 및 성능을 평가할 수 있습니다. TPS92643-Q1은 고휘도 LED(발광 다이오드) 제어용으로 설계된 제품으로, 넓은 입력 전압 범위(5.5V~40V), PWM 조광 기능, 아날로그 조광 기능, 입력 저전압 보호, 결함 감지, 내부 5V 레귤레이터 및 온보드 1.4kHz PMW 신호에 대한 듀티 사이클 제어 수행 기능을 갖추고 있습니다.

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