Texas Instruments TPS92622QDGNRQ1

Overview

TPS92622QDGNRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive two-channel high-side linear LED driver with external thermal sharing capability, 4.5–40 V input range, ±5% current accuracy over –40°C to +125°C, and independent 150-mA per-channel regulation via external sense resistors - used in rear lamps, CHMSL, and interior overhead consoles.

For engineers reviewing the TPS92622QDGNRQ1 datasheet, TPS92622QDGNRQ1 pinout, TPS92622QDGNRQ1 application, or TPS92622QDGNRQ1 equivalent, this page delivers verified package mapping (HVSSOP-12), thermal sharing architecture, fault bus configuration (one-fails–all-fail or N-1), diagnostic thresholds (LED open: 180–420 mV, short-to-GND: 0.855–1.26 V), and precise dropout behavior (≤350 mV at 150 mA).

Technical Context

The TPS92622QDGNRQ1 implements dual independent high-side current regulators using a 150-mV internal reference voltage (V_{CS_REG}) across external R_SNSx resistors, enabling ±5% output accuracy across temperature. Each channel provides two parallel output paths - OUTx for direct LED anode connection and RESx for external shunt resistor-based thermal power dissipation.

Its diagnostics include auto-recovering LED open-circuit detection (deglitch time: 125 µs), short-to-GND protection with retry current (0.64–1.53 mA), and configurable fault bus operation (one-fails–all-fail or channel-isolated). Thermal shutdown triggers at 157–187°C with 15°C hysteresis, and junction temperature operates up to 150°C.

Key Specifications

Pinout & Package

HVSSOP-12 (DGN) package with PowerPAD™ thermal pad (3.00 mm × 4.00 mm); exposed thermal pad must be soldered to PCB ground plane for optimal thermal performance and reliability in automotive under-hood environments.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-side LED driver applications.

Compared with TPS92622QDRRQ1 and TPS92612QDGQRQ1, the TPS92622QDGNRQ1 uniquely combines dual-channel operation, EN-controlled ultra-low sleep current, and dynamic thermal sharing - making it the only option qualified for demanding rear lamp and CHMSL applications requiring AEC-Q100 Grade 1 reliability and thermal resilience.

Availability

TPS92622QDGNRQ1 is available at Aetrix Electronics and suitable for automotive exterior rear lights, center high-mounted stop lamps, and interior overhead consoles requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for TPS92622QDGNRQ1 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 leader specializing in analog and embedded processing technologies, with deep expertise in automotive-grade power management and lighting solutions.

The TPS92622-Q1 belongs to TI's automotive LED driver product line, designed specifically for thermally constrained exterior and interior lighting systems requiring AEC-Q100 qualification, diagnostic coverage, and robust thermal management.

FAQ

What is the maximum ambient temperature rating for the TPS92622QDGNRQ1?

The TPS92622QDGNRQ1 is AEC-Q100 Grade 1 qualified with an operating ambient temperature range of –40°C to +125°C. Its junction temperature can reach up to 150°C, and thermal shutdown activates at 157–187°C with 15°C hysteresis - ensuring safe operation in under-hood and trunk-mounted automotive lighting locations where the TPS92622QDGNRQ1 is commonly deployed.

Does the TPS92622QDGNRQ1 support independent PWM dimming per channel?

Yes, the TPS92622QDGNRQ1 supports fully independent PWM dimming via dedicated PWM1 and PWM2 inputs. Each pin controls its respective channel (OUT1/RES1 or OUT2/RES2) with <10 µs propagation delay, enabling precise 200 Hz+ brightness control across both channels without crosstalk - a key capability used in TPS92622QDGNRQ1 implementations for asymmetric rear lamp functions like brake/tail differentiation.

How does thermal sharing work on the TPS92622QDGNRQ1?

Thermal sharing on the TPS92622QDGNRQ1 splits each channel's total current between OUTx (direct LED path) and RESx (external shunt resistor path). The IC dynamically allocates >95% of current to RESx when supply headroom is high, shifting dissipation away from the die. This is implemented using two independent current regulators referenced to the same 150-mV sense voltage - a core architectural feature distinguishing the TPS92622QDGNRQ1 from standard linear drivers.

Can the TPS92622QDGNRQ1 operate without an external EN signal?

Yes, the TPS92622QDGNRQ1 operates without EN control: when EN is left unconnected or tied high, the device remains active as long as SUPPLY exceeds the POR rising threshold (3.6–4.0 V). However, the EN pin is required to achieve ultra-low shutdown current (13.5–18 µA); without it, standby current rises to 1.2–1.6 mA - a critical distinction for always-on lighting systems where the TPS92622QDGNRQ1's EN capability delivers measurable battery savings.

What fault conditions does the TPS92622QDGNRQ1 detect and how does it respond?

The TPS92622QDGNRQ1 detects LED open-circuit (180–420 mV threshold), LED short-to-GND (0.855–1.26 V), and junction overtemperature (157–187°C). Upon detection, it disables the affected channel, asserts FAULT low, and automatically retries operation every 125 µs. Recovery occurs only when the fault condition clears - a self-contained behavior that eliminates software polling requirements in TPS92622QDGNRQ1-based lighting modules.