Startseite Energiemanagement LED-Treiber LED-Beleuchtungstreiber
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LED-Beleuchtungstreiber

TPS92512

AKTIV

42-V-, 2,5-A-Abwärtsregler für LED-Beleuchtung

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TPS92512

AKTIV
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Produktdetails

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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Technische Dokumentation

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Typ Titel Datum
* Data sheet TPS92512 2.5A Buck LED Driver with Integrated Analog Current Adjust datasheet (Rev. B) PDF | HTML 20 Apr 2015
White paper Common LED Functions and LED Driver Design Considerations 21 Sep 2020
Technical article Designing an IoT modular light – part 2 PDF | HTML 24 Jun 2016
Technical article Designing an IoT modular light PDF | HTML 17 Jun 2016
Technical article Driving LEDs with both analog and PWM dimming PDF | HTML 13 Okt 2015
Technical article Driving LEDs in battery-powered portable projectors PDF | HTML 25 Aug 2015
EVM User's guide TPS92512EVM-001 High-Current Buck Regulator With Analog and PWM Dimming for Hi (Rev. A) 14 Jul 2015

Design und Entwicklung

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Evaluierungsplatine

TPS92512EVM-001 — TPS92512-Abwärtsregler mit Analog- und PWM-Dimmung

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 (...)

Benutzerhandbuch: PDF
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Simulationsmodell

TPS92512 TINA-TI Reference Design

SLVMBA2.TSC (1495 KB) - TINA-TI Reference Design
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Simulationsmodell

TPS92512 TINA-TI Transient Spice Model

SLVMBA3.ZIP (87 KB) - TINA-TI Spice Model
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Simulationsmodell

TPS92512 and TPS92512HV PSpice Transient Model

SLUM449.ZIP (104 KB) - PSpice Model
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Simulationstool

PSPICE-FOR-TI — PSpice® für TI Design-und Simulationstool

PSpice® für TI ist eine Design- und Simulationsumgebung, welche Sie dabei unterstützt, die Funktionalität analoger Schaltungen zu evaluieren. Diese voll ausgestattete Design- und Simulationssuite verwendet eine analoge Analyse-Engine von Cadence®. PSpice für TI ist kostenlos erhältlich und (...)
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Referenzdesigns

PMP10222 — 4x 16-W-LED-Treiber-Referenzdesign

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
Schaltplan: PDF
Gehäuse Pins CAD-Symbole, Footprints und 3D-Modelle
HVSSOP (DGQ) 10 Ultra Librarian
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