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TPS92512

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適用 LED 照明的 42-V 2.5-A 降壓電流穩壓器

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TPS92512

現行
產品規格表 立即訂購

產品詳細資料

Input voltage type DC/DC Topology Buck Vin (min) (V) 4.5 Vin (max) (V) 42 Vout (max) (V) 40 Vout (min) (V) 0.2 Iout (max) (A) 2.5 Iq (typ) (mA) 0.337 Features Adjustable Switch Frequency, Enable/Shutdown, Integrated Switch, Synchronization Pin, Thermal shutdown Operating temperature range (°C) -40 to 125 Dimming method Analog, PWM Number of channels 1 Rating Catalog
Input voltage type DC/DC Topology Buck Vin (min) (V) 4.5 Vin (max) (V) 42 Vout (max) (V) 40 Vout (min) (V) 0.2 Iout (max) (A) 2.5 Iq (typ) (mA) 0.337 Features Adjustable Switch Frequency, Enable/Shutdown, Integrated Switch, Synchronization Pin, Thermal shutdown Operating temperature range (°C) -40 to 125 Dimming method Analog, PWM Number of channels 1 Rating Catalog
HVSSOP (DGQ) 10 14.7 mm² 3 x 4.9
  • Integrated 200-mΩ High-Side MOSFET
  • 4.5-V to 42-V Input Voltage Range
    (4.5 V to 60 V for the TPS92512HV)
  • 0 V to 300 mV Adjustable Voltage Reference
  • ±5% LED Current Accuracy
  • 100-kHz to 2-MHz Switching Frequency Range
  • Dedicated PWM Dimming Input
  • Adjustable Undervoltage-Lock-Out
  • Overcurrent Protection
  • Overtemperature Protection
  • MSOP-10 Package with PowerPAD
  • Integrated 200-mΩ High-Side MOSFET
  • 4.5-V to 42-V Input Voltage Range
    (4.5 V to 60 V for the TPS92512HV)
  • 0 V to 300 mV Adjustable Voltage Reference
  • ±5% LED Current Accuracy
  • 100-kHz to 2-MHz Switching Frequency Range
  • Dedicated PWM Dimming Input
  • Adjustable Undervoltage-Lock-Out
  • Overcurrent Protection
  • Overtemperature Protection
  • MSOP-10 Package with PowerPAD

The TPS92512/HV are 2.5A step-down (buck) current regulators with an integrated MOSFET to drive high current LEDs. Available with 42 V and 60 V (HV) input ranges, these LED drivers operate at a user selected fixed-frequency with peak-current mode control and deliver excellent line and load regulation.

The TPS92512/HV LED drivers feature separate inputs for analog and pulse width modulation (PWM) dimming for no compromise brightness control achieving contrast ratios of greater than 10:1 and greater than 100:1, respectively. The PWM input is compatible with low-voltage logic standards for easy interface to a broad range of microcontrollers. The analog LED current setpoint is adjustable from 0 V to 300 mV using the IADJ input with an external 0 V to 1.8 V signal.

For multi-string applications using two or more TPS92512/HV LED drivers, the internal oscillator can be overdriven by an external clock ensuring all of the converters operate at a common frequency thereby reducing the potential for beat frequencies and simplifying system EMI filtering. An adjustable input under-voltage lockout (UVLO) with hysteresis provides flexibility in setting start/stop voltages based upon supply voltage conditions.

The TPS92512 includes cycle-by-cycle overcurrent protection and thermal shutdown protection. It is available in a 10-pin HVSSOP PowerPAD™ package.

The TPS92512/HV are 2.5A step-down (buck) current regulators with an integrated MOSFET to drive high current LEDs. Available with 42 V and 60 V (HV) input ranges, these LED drivers operate at a user selected fixed-frequency with peak-current mode control and deliver excellent line and load regulation.

The TPS92512/HV LED drivers feature separate inputs for analog and pulse width modulation (PWM) dimming for no compromise brightness control achieving contrast ratios of greater than 10:1 and greater than 100:1, respectively. The PWM input is compatible with low-voltage logic standards for easy interface to a broad range of microcontrollers. The analog LED current setpoint is adjustable from 0 V to 300 mV using the IADJ input with an external 0 V to 1.8 V signal.

For multi-string applications using two or more TPS92512/HV LED drivers, the internal oscillator can be overdriven by an external clock ensuring all of the converters operate at a common frequency thereby reducing the potential for beat frequencies and simplifying system EMI filtering. An adjustable input under-voltage lockout (UVLO) with hysteresis provides flexibility in setting start/stop voltages based upon supply voltage conditions.

The TPS92512 includes cycle-by-cycle overcurrent protection and thermal shutdown protection. It is available in a 10-pin HVSSOP PowerPAD™ package.

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類型 標題 日期
* Data sheet TPS92512 2.5A Buck LED Driver with Integrated Analog Current Adjust datasheet (Rev. B) PDF | HTML 2015年 4月 20日
White paper Common LED Functions and LED Driver Design Considerations 2020年 9月 21日
Technical article Designing an IoT modular light – part 2 PDF | HTML 2016年 6月 24日
Technical article Designing an IoT modular light PDF | HTML 2016年 6月 17日
Technical article Driving LEDs with both analog and PWM dimming PDF | HTML 2015年 10月 13日
Technical article Driving LEDs in battery-powered portable projectors PDF | HTML 2015年 8月 25日
EVM User's guide TPS92512EVM-001 High-Current Buck Regulator With Analog and PWM Dimming for Hi (Rev. A) 2015年 7月 14日

設計與開發

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開發板

TPS92512EVM-001 — 具有類比和 PWM 調光的 TPS92512 降壓穩壓器

The TPS92512EVM is designed to accept an input voltage range of 12V to 60V and drive high current LED stacks at up to 1.5A while providing a small form factor. The LED stack can be between 9V and 24V depending on the input voltage range. The circuit can be dimmed using an analog current adjust (...)

使用指南: PDF
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模擬型號

TPS92512 TINA-TI Reference Design

SLVMBA2.TSC (1495 KB) - TINA-TI Reference Design
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模擬型號

TPS92512 TINA-TI Transient Spice Model

SLVMBA3.ZIP (87 KB) - TINA-TI Spice Model
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模擬型號

TPS92512 and TPS92512HV PSpice Transient Model

SLUM449.ZIP (104 KB) - PSpice Model
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模擬工具

PSPICE-FOR-TI — PSpice® for TI 設計與模擬工具

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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參考設計

PMP10222 — 4x 16W LED 驅動器參考設計

The PMP10222 reference design provides a solution for 4 individual, synchronizable and dimmable LED Drivers, which convert an input voltage of 30V-40V to 1A output current with a maximum output voltage of 16V.
Test report: PDF
電路圖: PDF
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