Texas Instruments TPS54060ADRCR

Overview

TPS54060ADRCR from Texas Instruments is a 60-V, 0.5-A synchronous step-down DC–DC converter with integrated 200-mΩ high-side MOSFET, Eco-Mode™ pulse-skipping for light-load efficiency, adjustable 100 kHz–2.5 MHz switching frequency via RT/CLK pin, and 0.8-V internal reference. It delivers regulated 3.3-V output at 500 kHz in industrial power supplies with input range 3.5–60 V.

For engineers reviewing the TPS54060ADRCR datasheet, TPS54060ADRCR pinout, TPS54060ADRCR application, or TPS54060ADRCR equivalent, key selection considerations include its 116-μA no-load quiescent current, UVLO adjustability via EN pin resistors, open-drain PWRGD monitoring (94–107% V_REF window), and thermal shutdown protection at 182°C.

Technical Context

The TPS54060ADRCR implements constant-frequency peak-current-mode control with slope compensation to prevent subharmonic oscillation across 0–100% duty cycle. Its error amplifier features 97 μ℧ transconductance and 2.7 MHz bandwidth, comparing VSENSE against either the 0.8-V reference or SS/TR voltage during sequencing.

Bootstrap operation enables 100% duty cycle capability as long as BOOT–PH ≥ 2.1 V; below that threshold, the high-side MOSFET disables to allow low-side diode recharge. The RT/CLK pin supports both resistor-set frequency tuning and external clock synchronization via PLL lock with <100-μs acquisition time.

Key Specifications

Pinout & Package

TPS54060ADRCR uses the 3 mm × 3 mm VSON-10 package with exposed thermal pad (Pin 11) requiring solder connection to PCB ground plane for thermal performance (R_θJA = 40°C/W).

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM5164QDRCRQ1 and TPS54260DRCT, the TPS54060ADRCR offers the lowest quiescent current in its class and smallest VSON-10 footprint, making it optimal for space- and energy-constrained industrial and aftermarket designs where 0.5-A output suffices.

Availability

TPS54060ADRCR is available at Aetrix Electronics and suitable for industrial sensor nodes, automotive aftermarket GPS units, programmable logic controller I/O modules, and 48-V telecom remote terminals requiring stable component supply with full traceability and lifecycle management.

Supply support for TPS54060ADRCR 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 designing analog and embedded processing solutions for industrial, automotive, and personal electronics markets.

The TPS54060A product line delivers high-voltage, low-quiescent-current buck regulators for ruggedized power conversion in 12–48-V systems where efficiency, small size, and reliability are critical.

FAQ

What is the minimum input voltage required for TPS54060ADRCR to start switching?

The TPS54060ADRCR has an internally set undervoltage lockout (UVLO) threshold of 2.5 V, but this can be raised using external resistors on the EN pin. With EN floating, the device begins switching when VIN exceeds approximately 2.5 V. For example, in a 3.3-V output application with 0.1-A load, startup occurs at ~3.8 V per typical characterization data. The TPS54060ADRCR will not regulate until VIN reaches the minimum required for the desired output voltage plus dropout margin.

How does the TPS54060ADRCR achieve 100% duty cycle operation?

The TPS54060ADRCR achieves effective 100% duty cycle by monitoring the BOOT–PH voltage: as long as it remains above 2.1 V, the high-side MOSFET stays on. When BOOT–PH falls below that threshold, the device disables the high-side switch to allow the low-side path to recharge the bootstrap capacitor. This mechanism enables dropout operation down to VIN ≈ V_OUT + 2.1 V, and is fully supported in the TPS54060ADRCR's functional block diagram and electrical characteristics table.

Can the TPS54060ADRCR synchronize to an external clock, and what are the timing requirements?

Yes, the TPS54060ADRCR synchronizes to an external clock via the RT/CLK pin. When pulled above 2.2 V, the internal amplifier disables and the pin becomes a high-impedance clock input to the PLL. Minimum pulse width is 40 ns, and PLL lock time is ≤100 μs at 500 kHz. Clock edges must be clean and monotonic; if clocking stops, the device automatically reverts to resistor-set mode. This behavior is confirmed in Section 7.1 and Table 6.5 of the TPS54060ADRCR datasheet.

What is the purpose of the SS/TR pin on the TPS54060ADRCR, and how is it used in practice?

The SS/TR pin on the TPS54060ADRCR controls output voltage ramp rate during startup (slow start) or tracks another voltage rail (tracking). A capacitor from SS/TR to GND sets the rise time; for example, a 10-nF cap yields ~10-ms ramp to 3.3 V. For tracking, a resistor divider from a master rail feeds SS/TR to force the TPS54060ADRCR output to follow. The pin also discharges during faults to ensure consistent restart behavior-verified in Section 7.3.4 and Figure 25 of the official datasheet.

Does the TPS54060ADRCR require an external boot diode, and why or why not?

No, the TPS54060ADRCR does not require an external boot diode because it integrates the boot recharge diode internally. This eliminates one discrete component, reduces layout complexity, and improves reliability-explicitly stated in the "Features" section and Section 7.3.3 of the TPS54060ADRCR datasheet. The internal diode enables automatic boot capacitor refresh during the low-side conduction phase, supporting high-duty-cycle operation without external parts.