Texas Instruments TPS92513HVDGQT

Overview

TPS92513HVDGQT from Texas Instruments is a 1.5 A buck LED driver IC with integrated 220-mΩ high-side MOSFET, 4.5–60 V input range, ±5% LED current accuracy, and 100 kHz–2 MHz programmable switching frequency. It delivers stable constant-current drive for multi-LED strings in street lighting and industrial illumination systems.

For engineers reviewing the TPS92513HVDGQT datasheet, TPS92513HVDGQT pinout, TPS92513HVDGQT application, or TPS92513HVDGQT equivalent, key selection criteria include its HV input capability (60 V), analog+PWM dual dimming support, RT/CLK synchronization mode, thermal shutdown at 165°C, and HVSSOP-10 PowerPAD™ package with exposed thermal pad.

Technical Context

The TPS92513HVDGQT implements peak-current mode control with fixed-frequency operation, enabling precise line/load regulation and simplified compensation. Its internal oscillator supports resistor-programmed (RT) or external clock-synchronized (CLK) modes, with PLL lock-in time under 100 µs and minimum pulse width of 140 ns.

It features separate analog current adjustment (IADJ → ISENSE scaling at 1/6 ratio) and dedicated PWM dimming (PDIM), achieving >100:1 contrast ratio. Overcurrent protection limits MOSFET current to 6 A, while thermal shutdown activates at 165°C with 20°C hysteresis.

Key Specifications

Pinout & Package

HVSSOP-10 (DGQ) package with exposed thermal pad (PowerPAD™); requires direct solder connection of pad to PCB ground plane for thermal management and electrical stability.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM3409HVMM/NOPB and MPQ4425AGU-AEC1-P, the TPS92513HVDGQT uniquely integrates both analog and PWM dimming in a single 60 V, 1.5 A buck driver-enabling flexible brightness control without external circuitry while maintaining ±5% current accuracy across temperature.

Availability

TPS92513HVDGQT is available at Aetrix Electronics and suitable for street lighting, emergency signage, and retail illumination requiring stable component supply, long-term manufacturability, and consistent parametric performance across production lots.

Supply support for TPS92513HVDGQT 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 power management technologies, with decades of expertise in LED driver innovation and automotive-grade reliability.

The TPS92513HVDGQT belongs to TI's high-voltage buck LED driver product line, designed specifically for robust, high-efficiency constant-current driving of medium-power LED arrays in outdoor, industrial, and transportation lighting systems.

FAQ

What is the maximum input voltage rating for the TPS92513HVDGQT?

The TPS92513HVDGQT has an absolute maximum input voltage rating of 65 V and a recommended operating range of 4.5 V to 60 V. This 60 V upper limit distinguishes it from the standard TPS92513 (42 V max), making it suitable for 48 V DC systems with transient overvoltage margins. Operation beyond 60 V risks permanent damage even if within the 65 V absolute max limit.

How does the IADJ pin function in the TPS92513HVDGQT?

The IADJ pin on the TPS92513HVDGQT sets the LED current reference voltage at the ISENSE pin via a precise 1/6 scaling ratio (V_ISENSE = V_IADJ/6). Applying 0.18–1.8 V to IADJ yields 30–300 mV at ISENSE, enabling 10:1 analog dimming. The pin is internally clamped at 1.8 V and requires a 10 nF decoupling capacitor to ground for noise immunity.

Can the TPS92513HVDGQT synchronize its switching frequency to an external clock?

Yes, the TPS92513HVDGQT supports external clock synchronization via the RT/CLK pin. When driven with a square wave transitioning below 0.63 V and above 1.81 V (≥51 ns pulse width), the device enters PLL mode and locks to frequencies from 300 kHz to 2 MHz. The internal oscillator resumes if the clock stops, defaulting to resistor-programmed frequency.

What thermal considerations apply to the TPS92513HVDGQT in continuous 1.5 A operation?

For continuous 1.5 A operation, the TPS92513HVDGQT requires proper thermal management via its exposed PowerPAD™. The junction-to-board thermal resistance is 37.5°C/W; with typical PCB copper area, this allows ~1.5 A at ambient ≤65°C. Thermal shutdown triggers at 165°C with 20°C hysteresis, and the device must be soldered directly to a solid GND plane for effective heat dissipation.

Does the TPS92513HVDGQT support both analog and PWM dimming simultaneously?

Yes, the TPS92513HVDGQT supports independent analog dimming via the IADJ pin and PWM dimming via the PDIM pin. These functions operate concurrently without interference: IADJ sets the baseline current level, while PDIM modulates output duty cycle. This dual-path architecture enables >100:1 total dimming contrast ratio-exceeding capabilities of drivers offering only one method.