Texas Instruments TPS92602BQPWPRQ1

Overview

TPS92602BQPWPRQ1 from Texas Instruments is a dual-channel automotive-grade LED driver IC designed for high-brightness headlight systems. It implements two independent peak-current-mode boost controllers with 180° phase shift, supports 4 V–40 V input and up to 75 V output, delivers ±6 mV high-side current-sense offset (enabling ~4% LED current accuracy), and integrates diagnostic outputs for open-LED, short-to-GND, and LED current monitoring.

For engineers reviewing the TPS92602BQPWPRQ1 datasheet, TPS92602BQPWPRQ1 pinout, TPS92602BQPWPRQ1 application, or TPS92602BQPWPRQ1 equivalent, key selection criteria include its AEC-Q100 Grade 1 qualification (–40°C to 125°C), dual-channel 150-mV sense-voltage option, integrated NMOS gate driver (0.7 A peak), and dual-loop regulation supporting both constant-current and constant-voltage operation in boost, SEPIC, and flyback topologies.

Technical Context

The TPS92602BQPWPRQ1 employs two synchronized, out-of-phase peak-current-mode boost controllers-each with independent voltage- and current-feedback loops. The current loop uses high-side sensing (ISP/ISN) with 150-mV full-scale range and ±6-mV offset; the voltage loop references an internal 2.2 V ±5% bandgap via OVFB pins.

It integrates a fixed-frequency oscillator (100–600 kHz, adjustable via RT pin), slope compensation to prevent subharmonic oscillation, and dual diagnostic paths: analog DIAGx output tracking LED current (0.2–2.85 V), plus digital fault signaling (open/short detection thresholds at 10 mV and 225 mV).

Key Specifications

Pinout & Package

TPS92602BQPWPRQ1 is housed in a 28-pin HTSSOP (PWP) package with exposed thermal pad, optimized for automotive thermal and EMI requirements. Pin count and function mapping match the TPS92602-Q1 family specification.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-channel automotive LED driver applications.

Compared with TPS92602QPWPRQ1, the TPS92602BQPWPRQ1 offers identical performance without EEPROM overhead-reducing configuration complexity and startup time. Versus MAX20051ATP/V+T, it delivers true dual-channel operation, integrated PMOS dimming, and real-time analog current monitoring-critical for ADB and matrix headlight architectures.

Availability

TPS92602BQPWPRQ1 is available at Aetrix Electronics and suitable for automotive headlight systems, adaptive driving beam (ADB) modules, and commercial vehicle DRL applications requiring stable component supply, long-term lifecycle assurance, and AEC-Q100-compliant sourcing.

Supply support for TPS92602BQPWPRQ1 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, embedded processing, and automotive ICs, with decades of experience in safety-critical power management solutions.

The TPS9260x-Q1 product line was engineered specifically for automotive front lighting-delivering dual-channel, high-voltage LED regulation with integrated diagnostics, AEC-Q100 qualification, and topology flexibility (boost, SEPIC, flyback).

FAQ

What is the primary function of the TPS92602BQPWPRQ1 in automotive lighting systems?

The TPS92602BQPWPRQ1 serves as a dual-channel, high-side current-controlled LED driver IC optimized for automotive headlight applications. It regulates LED current using peak-current-mode boost control with 180° interleaving, supports both constant-current and constant-voltage modes, and delivers integrated diagnostics including open-LED and short-to-GND detection. Its design enables precise, reliable illumination control in ADB and matrix headlight systems.

Does the TPS92602BQPWPRQ1 support synchronization between its two channels?

Yes, the TPS92602BQPWPRQ1 inherently operates its two boost controllers 180° out-of-phase to reduce input/output ripple and EMI. While it does not offer user-configurable phase offset, this fixed interleaving is hardwired and active by default-no external configuration is required. The RT pin supports external clock synchronization across both channels simultaneously, but relative phase remains fixed at 180°.

What is the significance of the 150-mV high-side current sense range in the TPS92602BQPWPRQ1?

The 150-mV full-scale high-side current sense range in the TPS92602BQPWPRQ1 enables accurate LED current regulation with minimal power loss across the sense resistor. Combined with ±6-mV input offset, it achieves approximately 4% LED current accuracy over temperature and line-sufficient for automotive lighting without calibration. This range is factory-trimmed and fixed, distinguishing it from EEPROM-programmable variants like TPS92602QPWPRQ1.

How does the DIAGx pin on the TPS92602BQPWPRQ1 provide diagnostic functionality?

The DIAGx pin on the TPS92602BQPWPRQ1 serves dual diagnostic roles: analog and digital. In analog mode, it outputs a voltage (0.2–2.85 V) proportional to LED current (V(DIAG)/V(ISPx–ISNx) = 12.5), enabling real-time monitoring. In digital mode, it asserts low (<0.15 V) for open-LED faults (≤10 mV sensed) or high (>3 V) for short-to-GND faults (≥225 mV sensed)-providing immediate fault signaling without external comparators.

Can the TPS92602BQPWPRQ1 be used in non-automotive high-brightness LED applications?

While the TPS92602BQPWPRQ1 is AEC-Q100 qualified and optimized for automotive use, its electrical specifications-including 4–40 V input, 4–75 V output, dual-loop regulation, and integrated diagnostics-make it technically viable for industrial or commercial high-brightness LED applications. However, its qualification, thermal design, and fault thresholds are tuned for automotive environments; non-automotive users must validate reliability, EMI, and thermal performance in their specific system context.