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TPS92692-Q1 Dataheets PDF



Part Number TPS92692-Q1
Manufacturers Texas Instruments
Logo Texas Instruments
Description High Accuracy LED Controller
Datasheet TPS92692-Q1 DatasheetTPS92692-Q1 Datasheet (PDF)

Product Folder Order Now Technical Documents Tools & Software Support & Community TPS92692, TPS92692-Q1 SLVSDD9 – MARCH 2017 TPS92692, TPS92692-Q1 High Accuracy LED Controller With Spread Spectrum Frequency Modulation 1 Features •1 Wide Input Voltage: 4.5 V to 65 V • Better than ± 4% LED Current Accuracy over –40°C to 150°C Junction Temperature Range • Spread Spectrum Frequency Modulation for Improved EMI • Comprehensive Fault Protection Circuitry with Current Monitor output and Open Drain.

  TPS92692-Q1   TPS92692-Q1


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Product Folder Order Now Technical Documents Tools & Software Support & Community TPS92692, TPS92692-Q1 SLVSDD9 – MARCH 2017 TPS92692, TPS92692-Q1 High Accuracy LED Controller With Spread Spectrum Frequency Modulation 1 Features •1 Wide Input Voltage: 4.5 V to 65 V • Better than ± 4% LED Current Accuracy over –40°C to 150°C Junction Temperature Range • Spread Spectrum Frequency Modulation for Improved EMI • Comprehensive Fault Protection Circuitry with Current Monitor output and Open Drain Fault Flag Indicator • Internal Analog Voltage to PWM Duty Cycle Generator for stand-alone Dimming Operation • Compatible with Direct PWM Input with over 1000:1 Dimming Range • Analog LED Current Adjust Input (IADJ) with over 15:1 Contrast Ratio • Integrated P-Channel Driver to enable Series FET Dimming and LED Protection • TPS92692-Q1: Automotive Q100 Grade 1 Qualified 2 Applications • TPS92692-Q1: Automotive Exterior Lighting Applications • Driver Monitoring Systems (DMS) • LED General Lighting Applications • Exit Signs and Emergency Lighting 3 Description The TPS92692 and TPS92692-Q1 are high accuracy peak current mode based controllers designed to support step-up/down LED driver topologies. The device incorporates a rail-to-rail current amplifier to measure LED current and spread spectrum frequency modulation technique for improved EMI performance. This high performance LED controller can independently modulate LED current using either analog or PWM dimming techniques. Linear analog dimming response with over 15:1 range is obtained by varying the voltage across the high impedance analog adjust (IADJ) input. PWM dimming of LED current is achieved by directly modulating the DIM/PWM input pin with the desired duty cycle or by enabling the internal PWM generator circuit. The PWM generator translates the DC voltage at DIM/PWM pin to corresponding duty cycle by comparing it to the internal triangle wave generator. The optional PDRV gate driver output can be used to drive an external P-Channel series MOSFET. The TPS92692 and TPS92692-Q1 devices support continuous LED status check through the current monitor (IMON) output. The devices also include an open drain fault indicator output to indicate LED overcurrent, output overvoltage and output undervoltage conditions. Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) TPS92692-Q1 TPS92692 HTSSOP (20) 5.10 mm × 6.60 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. 4 Typical Boost LED Driver LD RCS VIN CIN TPS92692-Q1 CVREF CSS CDM RT CCOMP 1 VIN 2 VREF 3 FLT 4 SS 5 DM 6 RT 7 COMP 8 IMON RADJ2 CIMON RDIM2 RADJ1 9 IADJ VCTRL DDIM RDIM1 10 DIM/PWM 20 VCC 19 GATE 18 IS 17 GND 16 SLOPE 15 OV 14 CSP 13 CSN 12 PDRV 11 RAMP PAD CVCC QM RIS RSLP CRAMP ROV2 ROV1 COUT 1 QDIM LED + LED í An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. TPS92692, TPS92692-Q1 SLVSDD9 – MARCH 2017 www.ti.com Table of Contents 1 Features .................................................................. 1 2 Applications ........................................................... 1 3 Description ............................................................. 1 4 Typical Boost LED Driver...................................... 1 5 Revision History..................................................... 2 6 Pin Configuration and Functions ......................... 3 7 Specifications......................................................... 4 7.1 Absolute Maximum Ratings ...................................... 4 7.2 ESD Ratings.............................................................. 5 7.3 Recommended Operating Conditions....................... 5 7.4 Thermal Information .................................................. 5 7.5 Electrical Characteristics........................................... 6 7.6 Typical Characteristics .............................................. 9 8 Detailed Description ............................................ 13 8.1 Overview ................................................................. 13 8.2 Functional Block Diagram ....................................... 14 8.3 Feature Description................................................. 15 8.4 Device Functional Modes........................................ 22 9 Application and Implementation ........................ 25 9.1 Application Information............................................ 25 9.2 Typical Applications ................................................ 34 10 Power Supply Recommendations ..................... 46 11 Layout................................................................... 47 11.1 Layout Guidelines ................................................. 47 11.2 Layout Example .................................................... 48 12.


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