Texas Instruments TPS54062DGKR

Overview

TPS54062 from Texas Instruments is a 4.7-V to 60-V input, 50-mA synchronous step-down DC/DC converter with integrated high-side and low-side MOSFETs, 89 µA non-switching quiescent current, adjustable 100–400 kHz switching frequency, and 0.8 V ±2% reference voltage - designed for low-power bias supplies in industrial sensors and process control systems.

For engineers reviewing the TPS54062 datasheet, TPS54062 pinout, TPS54062 application, or TPS54062 equivalent, key selection considerations include input voltage range (4.7–60 V), light-load efficiency via diode emulation, EN pin programmable UVLO, RT/CLK synchronization capability, and thermal performance in MSOP-8 or VSON-8 packages.

Technical Context

The TPS54062 implements peak current mode control with internal slope compensation to prevent sub-harmonic oscillation and enable stable operation with ceramic output capacitors. Its transconductance error amplifier (102 µS) drives the COMP pin to regulate output voltage via external resistor divider on VSENSE.

It features an internal PLL on the RT/CLK pin for synchronization to external clocks (300–400 kHz), frequency foldback during overload, thermal shutdown at 146°C, and boot UVLO protection ensuring reliable high-duty-cycle operation down to 0.8 V output.

Key Specifications

Pinout & Package

TPS54062 is available in MSOP-8 (3.00 mm × 3.00 mm) and VSON-8 (3 mm × 3 mm) packages, both requiring thermal pad connection to GND for proper thermal management. The VSON-8 variant includes an exposed thermal pad (Pin 9) that must be soldered to PCB ground plane.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar synchronous step-down converter applications.

Compared with LM5164QPWPRQ1 and TPS54260DGQR, the TPS54062 uniquely combines 50 mA output, 89 µA quiescent current, integrated MOSFETs, and MSOP/VSON-8 packaging - making it optimal for space-constrained, low-power industrial bias rails where simplicity and low standby loss are critical.

Availability

TPS54062 is available at Aetrix Electronics and suitable for industrial process control, 4–20 mA sensor powering, and high-voltage linear regulator replacement applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for TPS54062 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, serving industrial, automotive, and communications markets since 1930.

The TPS54062 belongs to TI's high-voltage DC/DC converter product line, engineered specifically for low-power industrial bias supplies where wide input range, ultra-low quiescent current, and integrated power stages simplify design and improve reliability.

FAQ

What is the minimum input voltage required for the TPS54062 to start switching?

The TPS54062 begins switching when VIN rises above 4.53 V (typical) and the EN pin voltage exceeds 1.24 V. This internal undervoltage lockout (UVLO) threshold ensures stable startup; it can be increased using external resistors on the EN pin. Below 4.53 V, the device remains disabled regardless of EN state. The TPS54062 will not operate below this threshold even with EN pulled high.

Can the TPS54062 synchronize to an external clock, and what frequency range is supported?

Yes, the TPS54062 supports external clock synchronization via its RT/CLK pin. When driven with a square wave exceeding the PLL upper threshold (1.3 V), the internal oscillator locks to the external clock in the 300–400 kHz range. The device automatically switches from resistor-based frequency setting to PLL mode. Clock edges must be clean and meet minimum pulse width (40 ns) and voltage thresholds for reliable lock.

What is the purpose of the BOOT pin on the TPS54062, and how is it used?

The BOOT pin supplies gate drive voltage to the internal high-side MOSFET. It requires an external capacitor (typically 0.1 µF) connected between BOOT and PH to form a bootstrap circuit. During low-side conduction, the capacitor charges through the internal boot diode; during high-side conduction, it provides the elevated gate voltage needed to fully enhance the N-channel MOSFET. If BOOT voltage falls below 2.9 V, the high-side switch disables.

Does the TPS54062 require external compensation components, and where are they connected?

Yes, the TPS54062 requires external frequency compensation components connected to the COMP pin. A series RC network (resistor + capacitor) from COMP to GND sets dominant pole location, while a capacitor from COMP to VSENSE adds zero for phase margin optimization. These components stabilize the current-mode control loop and must be selected based on output capacitance, ESR, and desired bandwidth - typical values are provided in TI's TPS54062 application report SLVA672.

How does the TPS54062 handle overcurrent or short-circuit conditions?

The TPS54062 employs cycle-by-cycle current limiting, thermal shutdown at 146°C, and frequency foldback to manage overloads. During overcurrent, the COMP pin voltage clamps to limit peak switch current (~134 mA). If sustained, frequency foldback reduces switching frequency to lower inductor current ramp rate. If junction temperature reaches 146°C, thermal shutdown disables switching until cooldown. Recovery is automatic upon fault removal.