Texas Instruments TPS92663AQPWPRQ1

Overview

TPS92663AQPWPRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive LED matrix manager IC for adaptive headlight systems, featuring six integrated bypass switches (two sub-strings of three series switches), 4.5 V to 60 V input voltage range, programmable 10-bit PWM dimming with device-to-device synchronization, and multi-drop UART interface compatible with CAN physical layer.

For engineers reviewing the TPS92663AQPWPRQ1 datasheet, TPS92663AQPWPRQ1 pinout, TPS92663AQPWPRQ1 application, or TPS92663AQPWPRQ1 equivalent, key selection criteria include LED open/short fault reporting, 8-bit ADC with dual MUX inputs for temperature compensation and LED binning, crystal oscillator driver, and slew-rate-controlled switch transitions for EMI mitigation in high-brightness automotive lighting.

Technical Context

The TPS92663AQPWPRQ1 implements a dedicated LED pixel-level control architecture using two independent sub-strings of three series-connected high-side bypass switches per string, each rated for ≤20 V across switch and ≤62 V switch-to-GND. Its internal charge pump supplies gate drive voltage to achieve low R_DS(on), minimizing conduction loss during dynamic dimming.

Control is executed via multi-drop UART with up to 16 addressable devices on one bus, supporting coexistence with TPS92662A-Q1; physical layer robustness is enhanced by CAN transceiver compatibility. The 8-bit ADC measures system temperature and LED binning values, while programmable phase shift and pulse width per LED enable precise glare-free beam shaping.

Key Specifications

Pinout & Package

TPS92663AQPWPRQ1 is housed in a thermally enhanced HTSSOP-24 (PWP) package measuring 7.70 mm × 4.40 mm with PowerPAD™ thermal pad, optimized for high-power LED driver thermal management in compact automotive headlamp modules.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar LED matrix management applications.

Compared with TPS92663AQPWPRQ1, TPS92662AQPWPRQ1 offers reduced channel count and no crystal driver but shares pinout and firmware compatibility, while MAX20052ATP/V+T provides simpler SPI control at the expense of adaptive beam features, ADC, and synchronization capability.

Availability

TPS92663AQPWPRQ1 is available at Aetrix Electronics and suitable for adaptive driving beam (ADB), glare-free high beam, and animated daytime running light (DRL) systems requiring stable component supply, automotive-grade reliability, and long-term production continuity.

Supply support for TPS92663AQPWPRQ1 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Texas Instruments is a global semiconductor company headquartered in Dallas, Texas, delivering analog and embedded processing solutions for automotive, industrial, personal electronics, and communications markets.

The TPS9266x-Q1 product line was developed specifically for AEC-Q100-compliant LED matrix control in automotive headlamps, emphasizing pixel-level programmability, functional safety diagnostics, and EMI-optimized switching for next-generation adaptive lighting.

FAQ

What is the maximum number of TPS92663AQPWPRQ1 devices supported on a single UART bus?

The TPS92663AQPWPRQ1 supports up to 16 addressable devices on one multi-drop UART bus. Each device is assigned a unique 4-bit address via hardware pins (ADDR0–ADDR3), enabling scalable matrix expansion without additional controllers or protocol translation. This architecture allows centralized microcontroller management of large LED arrays across multiple headlamp modules using a single serial interface.

Does the TPS92663AQPWPRQ1 require an external crystal oscillator?

Yes, the TPS92663AQPWPRQ1 requires an external crystal connected between OSC_IN and OSC_OUT pins to operate its internal timing circuits. The device integrates a crystal oscillator driver capable of supporting standard fundamental-mode crystals from 1 MHz to 4 MHz, ensuring stable PWM frequency generation and ADC sampling timing critical for synchronized multi-device operation in adaptive lighting systems.

How does the TPS92663AQPWPRQ1 implement LED open-circuit protection?

The TPS92663AQPWPRQ1 implements programmable LED open-circuit detection by monitoring voltage at each SWx pin during PWM off-time. When an open condition exceeds the user-configured threshold, the device reports the fault via UART register and asserts the open-drain FAULT pin. This detection operates independently per bypass switch and does not require external sense resistors or comparators, reducing system component count and board space.

Can the TPS92663AQPWPRQ1 drive high-current LEDs directly?

No, the TPS92663AQPWPRQ1 does not drive LEDs directly as a constant-current source. It functions as a high-side bypass switch manager: upstream constant-current sources (e.g., TPS92633-Q1 or external drivers) supply current to LED strings, and the TPS92663AQPWPRQ1 shunts selected LEDs via its six integrated switches to shape the light pattern. Its 20-V max switch-to-switch rating supports bypassing LEDs in strings up to ~60 V total.

What thermal management features does the TPS92663AQPWPRQ1 package provide?

The TPS92663AQPWPRQ1 uses an HTSSOP-24 (PWP) package with exposed PowerPAD™ thermal pad, designed for direct solder attachment to PCB copper planes. Thermal resistance θ_JA is 32°C/W typical with 2-in² 2-oz copper; the internal charge pump minimizes R_DS(on) to reduce self-heating during PWM operation. Layout guidelines recommend ≥6 thermal vias under the pad connected to inner-layer ground planes to sustain continuous operation at full load in +125°C ambient.