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TPS61194-Q1

ACTIVE

Low-EMI, high-performance 4-channel LED driver for Automotive lighting

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Data sheet

TPS61194-Q1

ACTIVE
Data sheet Order now

Product details

Number of channels 4 Topology Boost with Current Sink, SEPIC Rating Automotive Operating temperature range (°C) -40 to 125 Vin (min) (V) 4.5 Vin (max) (V) 40 Vout (min) (V) 6 Vout (max) (V) 40 Iout (max) (A) 0.4 Iq (typ) (mA) 5 Switching frequency (max) (kHz) 2200 Features Boost Sync, Global dimming, Spread Spectrum
Number of channels 4 Topology Boost with Current Sink, SEPIC Rating Automotive Operating temperature range (°C) -40 to 125 Vin (min) (V) 4.5 Vin (max) (V) 40 Vout (min) (V) 6 Vout (max) (V) 40 Iout (max) (A) 0.4 Iq (typ) (mA) 5 Switching frequency (max) (kHz) 2200 Features Boost Sync, Global dimming, Spread Spectrum
HTSSOP (PWP) 20 41.6 mm² 6.5 x 6.4
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature Range
  • Input Voltage Operating Range 4.5 V to 40 V
  • Four High-Precision Current Sinks
    • Current Matching 1% (Typical)
    • LED String Current up to 100 mA per Channel
    • Outputs can be Combined Externally for Higher Current per String
  • High Dimming Ratio of 10 000:1 at 100 Hz
  • Integrated Boost/SEPIC Converter for LED String Power
    • Output Voltage up to 45 V
    • Switching Frequency 300 kHz to 2.2 MHz
    • Switching Synchronization Input
    • Spread Spectrum for Lower EMI
  • Extensive Fault Detection Features
    • Fault Output
    • Input Voltage OVP and UVLO
    • Open and Shorted LED Fault Detection
    • Thermal Shutdown
  • Minimum Number of External Components
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to +125°C Ambient Operating Temperature Range
  • Input Voltage Operating Range 4.5 V to 40 V
  • Four High-Precision Current Sinks
    • Current Matching 1% (Typical)
    • LED String Current up to 100 mA per Channel
    • Outputs can be Combined Externally for Higher Current per String
  • High Dimming Ratio of 10 000:1 at 100 Hz
  • Integrated Boost/SEPIC Converter for LED String Power
    • Output Voltage up to 45 V
    • Switching Frequency 300 kHz to 2.2 MHz
    • Switching Synchronization Input
    • Spread Spectrum for Lower EMI
  • Extensive Fault Detection Features
    • Fault Output
    • Input Voltage OVP and UVLO
    • Open and Shorted LED Fault Detection
    • Thermal Shutdown
  • Minimum Number of External Components

The TPS61194-Q1 is an automotive high-efficiency, low-EMI, easy-to-use LED driver with integrated DC-DC converter. The DC-DC converter supports both boost and SEPIC mode operation. The device has four high-precision current sinks that can be combined for higher current capability.

The DC-DC converter has adaptive output voltage control based on the LED current sink headroom voltages. This feature minimizes the power consumption by adjusting the voltage to the lowest sufficient level in all conditions. For EMI reduction DC-DC supports spread spectrum for switching frequency and an external synchronization with dedicated pin. A wide-range adjustable frequency allows the TPS61194-Q1 to avoid disturbance for AM radio band.

The input voltage range for the TPS61194-Q1 is from 4.5 V to 40 V to support automotive stop/start and load dump condition. The TPS61194-Q1 integrates extensive fault detection features.

The TPS61194-Q1 is an automotive high-efficiency, low-EMI, easy-to-use LED driver with integrated DC-DC converter. The DC-DC converter supports both boost and SEPIC mode operation. The device has four high-precision current sinks that can be combined for higher current capability.

The DC-DC converter has adaptive output voltage control based on the LED current sink headroom voltages. This feature minimizes the power consumption by adjusting the voltage to the lowest sufficient level in all conditions. For EMI reduction DC-DC supports spread spectrum for switching frequency and an external synchronization with dedicated pin. A wide-range adjustable frequency allows the TPS61194-Q1 to avoid disturbance for AM radio band.

The input voltage range for the TPS61194-Q1 is from 4.5 V to 40 V to support automotive stop/start and load dump condition. The TPS61194-Q1 integrates extensive fault detection features.
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Technical documentation

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Top documentation Type Title Format options Date
* Data sheet TPS61194-Q1 Low-EMI Automotive LED Driver With Four 100-mA Channels datasheet (Rev. D) PDF | HTML 09 Jun 2017
Application note Some Guidelines and Tips for the LED Driver Application 14 Aug 2019
White paper Powering automotive displays to create interactive driving experiences 21 Dec 2017
Application note PCB Layout Guideline for Automotive LED Drivers 07 Apr 2017

Design & development

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Evaluation board

TPS61194Q1EVM — TPS61194-Q1 4-Channel LED Driver for Automotive Lighting Evaluation Module

The TPS61194Q1EVM evaluation module (EVM) helps designers evaluate the operation and performance of this device.  The  TPS61194Q1EVM uses the TPS61194-Q1 to drive up to 4 LED strings (up to 12 LEDs each, 36 LEDs together) for LCD backlighting with high efficiency.  Information about (...)

User guide: PDF
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Simulation model

TPS61194 Boost and SEPIC Unencrypted PSpice Transient Model Package (Rev. B)

SNVMAZ4B.ZIP (185 KB) - PSpice Model
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Simulation tool

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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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