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TPS92638-Q1

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8-kanaliger linearer LED-Treiber mit PWM-Helligkeitsregelung, für die Automobil-Elektronik

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TPS92638-Q1

AKTIV
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Produktdetails

Number of channels 8 Topology Current Source Rating Automotive TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 125 Vin (min) (V) 5 Vin (max) (V) 40 Vout (min) (V) 0 Vout (max) (V) 40 Iout (max) (A) 0.56 Iq (typ) (mA) 0.6 Features Enable/Shutdown, Fault Detection, Fault Diagnostic, LED Open Detection, LED Short to Ground Detection, Thermal Foldback, Thermal shutdown
Number of channels 8 Topology Current Source Rating Automotive TI functional safety category Functional Safety-Capable Operating temperature range (°C) -40 to 125 Vin (min) (V) 5 Vin (max) (V) 40 Vout (min) (V) 0 Vout (max) (V) 40 Iout (max) (A) 0.56 Iq (typ) (mA) 0.6 Features Enable/Shutdown, Fault Detection, Fault Diagnostic, LED Open Detection, LED Short to Ground Detection, Thermal Foldback, Thermal shutdown
HTSSOP (PWP) 20 41.6 mm² 6.5 x 6.4
  • Qualified for Automotive Applications
    • Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature Range
    • Device HBM ESD Classification Level H2
    • Device CDM ESD Classification Level C3B
  • Functional safety capable
    • Documentation available to aid functional safety system design
  • 8-Channel LED Driver With Analog and PWM Dimming
  • Wide Input-Voltage Range: 5 V–40 V
  • Adjustable Constant Output Current Set by Reference Resistor
    • Maximum Current: 70 mA per Channel
    • Maximum Current: 560 mA in Parallel Operation Mode
    • Accuracy: ±3% per Channel
    • Accuracy: ±4% per Device
  • PWM Dimming Input (PWM)
    • Turn ON/OFF Delay Time: 25 µs (typ.), 45 µs (max.)
  • 4-Bank PWM Dimming to Control 8 Channels
  • Open- and Shorted-LED Detection With Deglitch
  • Fault Pin for Open, Short, and Thermal-Shutdown Failure Reporting, Allowing Parallel Bus Connection of up to 15 Devices
  • Temperature-Current Foldback to Prevent Thermal Shutdown, With Programmable Threshold
  • Single Resistor for Stop-Current Set Point
  • Single Resistor for Tail-Current Set Point
  • Operating Junction Temperature Range –40°C to 150°C
  • Package: 20-Pin Thermally Enhanced PWP Package (PDSO)
  • Qualified for Automotive Applications
    • Device Temperature Grade 1: –40°C to 125°C Ambient Operating Temperature Range
    • Device HBM ESD Classification Level H2
    • Device CDM ESD Classification Level C3B
  • Functional safety capable
    • Documentation available to aid functional safety system design
  • 8-Channel LED Driver With Analog and PWM Dimming
  • Wide Input-Voltage Range: 5 V–40 V
  • Adjustable Constant Output Current Set by Reference Resistor
    • Maximum Current: 70 mA per Channel
    • Maximum Current: 560 mA in Parallel Operation Mode
    • Accuracy: ±3% per Channel
    • Accuracy: ±4% per Device
  • PWM Dimming Input (PWM)
    • Turn ON/OFF Delay Time: 25 µs (typ.), 45 µs (max.)
  • 4-Bank PWM Dimming to Control 8 Channels
  • Open- and Shorted-LED Detection With Deglitch
  • Fault Pin for Open, Short, and Thermal-Shutdown Failure Reporting, Allowing Parallel Bus Connection of up to 15 Devices
  • Temperature-Current Foldback to Prevent Thermal Shutdown, With Programmable Threshold
  • Single Resistor for Stop-Current Set Point
  • Single Resistor for Tail-Current Set Point
  • Operating Junction Temperature Range –40°C to 150°C
  • Package: 20-Pin Thermally Enhanced PWP Package (PDSO)

The TPS92638-Q1 is an eight-channel linear LED driver with PWM dimming control. Its design is ideal for driving multiple strings of LEDs up to a medium power range.

This device can drive up to eight strings with one to three LEDs in each string, at a total current up to 70 mA per channel. Outputs can be in parallel to provide higher-current drive up to 560 mA.

In multiple-string applications, the device offers the advantage of having common-cathode connection of the LED stings. So, there is only a single return wire needed instead of one per LED string that a system with low-side current sense would need.

The device has the capability for switching LED current between high current and low current for stop and tail applications. Two reference resistors set the two LED current levels from each output.

The included temperature monitor reduces the LED drive current if the IC junction temperature exceeds a thermal threshold. The temperature threshold is programmable through an external resistor. One can disable the thermal current-monitor feature by connecting the TEMP pin to ground. Output of the junction temperature as an analog voltage is available as a factory program option.

The TPS92638-Q1 is an eight-channel linear LED driver with PWM dimming control. Its design is ideal for driving multiple strings of LEDs up to a medium power range.

This device can drive up to eight strings with one to three LEDs in each string, at a total current up to 70 mA per channel. Outputs can be in parallel to provide higher-current drive up to 560 mA.

In multiple-string applications, the device offers the advantage of having common-cathode connection of the LED stings. So, there is only a single return wire needed instead of one per LED string that a system with low-side current sense would need.

The device has the capability for switching LED current between high current and low current for stop and tail applications. Two reference resistors set the two LED current levels from each output.

The included temperature monitor reduces the LED drive current if the IC junction temperature exceeds a thermal threshold. The temperature threshold is programmable through an external resistor. One can disable the thermal current-monitor feature by connecting the TEMP pin to ground. Output of the junction temperature as an analog voltage is available as a factory program option.
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Technische Dokumentation

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Typ Titel Datum
* Data sheet TPS92638-Q1 8-Channel Linear LED Driver With PWM Dimming datasheet (Rev. C) PDF | HTML 15 Jan 2020
Application note Typical Design Guidelines for TPS92630/8-Q1 in Automotive Rear Lamp Applications PDF | HTML 01 Sep 2020
Functional safety information Streamlining Functional Safety Certification in Automotive and Industrial 09 Jun 2020
Technical article Always make the right turn: how to design fault circuits in automotive lighting sy PDF | HTML 16 Jan 2020
Functional safety information TPS92638-Q1 Functional Safety FIT Rate and Failure Mode Distribution 06 Jan 2020
White paper Trends and topologies for automotive rear lighting systems (Rev. A) 23 Sep 2019
Technical article How to overcome size, EMI and thermal challenges of automotive LED lighting PDF | HTML 09 Apr 2018
White paper LED Drivers for Automotive Exterior Applications (Rev. B) 27 Mär 2018
Selection guide 汽车外部照明应用的LED驱动器 15 Mär 2018
Design guide EMC Compatible Automotive LED Rear Lamp Sequential-Turn Animation Design Guide 02 Jun 2016
Application note How to Calculate TPS92630-Q1 Maximum Output Current for Automotive Exterior Ligh 22 Dez 2015
EVM User's guide TPS92638EVM User's Guide (Rev. A) 24 Nov 2014

Design und Entwicklung

Weitere Bedingungen oder erforderliche Ressourcen enthält gegebenenfalls die Detailseite, die Sie durch Klicken auf einen der unten stehenden Titel erreichen.

Evaluierungsplatine

TPS92638EVM — TPS92638 EVM für linearen LED-Treiber mit acht Kanälen

Texas Instruments TPS92638 evaluation module contains a TPS92638 integrated circuit (IC), supporting passive components and three OSRAM LEDs in series per channel, the EVM includes 8 channels. The purpose of this EVM is to facilitate evaluation of the TPS92638 in a typical LED application.

Benutzerhandbuch: PDF
Nicht verfügbar auf TI.com
Evaluierungsplatine

TPS92638STAEVM — EMC-kompatible LED-Rückleuchte mit sequenzieller Abbiegeanimation für die Automobilindustrie – Evalu

This design is an analog solution for automotive rear lamps with sequential turn animations. This design is compatible with the TL81000 RI and the BCI test in a third-party EMC lab. This design also illustrates full automotive diagnostic with low quiescent current during fault mode.

Benutzerhandbuch: PDF
Nicht verfügbar auf TI.com
Simulationsmodell

TPS92638-Q1 Unencrypted PSpice Transient Model Package (Rev. C)

SLVMAQ1C.ZIP (111 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

TIDA-01348 — CISPR 25 Klasse 5, 7,5 W-Heckleuchte – Referenzdesign für LED-Beleuchtungssysteme in der Automobilin

This reference design is for automotive tail-light applications. The design features TPS92638-Q1 linear LED driver powered by a synchronous buck converter (LM53601-Q1) that is directly supplied from the automotive-battery voltage. This design helps pass CISPR 25 Class 5 conduct emission (...)
Design guide: PDF
Schaltplan: PDF
Referenzdesigns

TIDA-01007 — EMC-kompatible LED-Rückleuchte für Kraftfahrzeuge mit sequenzieller Abbiegeanimation – Referenzdesig

This design is an analog solution for automotive rear lamps with sequential turn animations. This design is compatible with the TL81000 RI and the BCI test in a third-party EMC lab. This design also illustrates full automotive diagnostic with low quiescent current during fault mode.
Design guide: PDF
Schaltplan: PDF
Referenzdesigns

TIDA-00846 — Highside-Abblendrückleuchten-Referenzdesign für die Automobilindustrie

This reference design is for automotive high-side dimming rear light, which uses BCM to supply the rear light. In the design, the high-side driver TPS1H100-Q1 is used to output PWM supply with different duty cycle. Linear LED drivers TPS92630-Q1 and TPS92638-Q1 are used to drive LEDs in constant (...)
Design guide: PDF
Schaltplan: PDF
Referenzdesigns

TIDA-00356 — Referenzdesign für Türschalter in Fahrzeugen

This automotive door control switch reference design showcases a proof-of-concept solution for an automotive door control switch panel that communicates wirelessly to the door side mirror, window lift and door lock mechanisms. Using TI's automotive qualified Bluetooth® low energy + MCU CC2541-Q1 (...)
Test report: PDF
Schaltplan: PDF
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Bestellen & Qualität

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  • Materialinhalt
  • Qualifikationszusammenfassung
  • Kontinuierliches Zuverlässigkeitsmonitoring
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