Texas Instruments TPS54160ADGQR

Overview

TPS54160ADGQR from Texas Instruments is a 60-V input, 1.5-A synchronous step-down DC/DC converter with integrated 200-mΩ high-side MOSFET, Eco-mode™ pulse-skipping for 116-μA quiescent current at light load, and adjustable 100 kHz–2.5 MHz switching frequency via RT/CLK pin. It delivers regulated 3.3-V output in industrial power supplies requiring wide VIN range and low standby power.

For engineers reviewing the TPS54160ADGQR datasheet, TPS54160ADGQR pinout, TPS54160ADGQR application, or TPS54160ADGQR equivalent, key selection criteria include its 2.5-V UVLO threshold with tighter enable hysteresis (1.11–1.36 V), PWRGD open-drain output with 94–107% voltage window, and MSOP-10 package with exposed thermal pad for thermal management in space-constrained 12–48-V systems.

Technical Context

The TPS54160ADGQR implements constant-frequency peak-current-mode control with internal slope compensation to prevent subharmonic oscillation across 0–100% duty cycle. Its error amplifier features 26-μMhos transconductance during slow start and 97-μMhos typical under normal operation, driving COMP pin for PWM latch modulation.

It integrates boot UVLO monitoring (2.1-V BOOT-PH threshold), frequency foldback during overload, and an active overload recovery circuit that discharges SS/TR during thermal shutdown or UVLO fault-ensuring repeatable restart. The PWRGD comparator uses dual thresholds (92%/109% for assertion, 94%/107% for deassertion) with 50-Ω on-resistance and 10-nA leakage.

Key Specifications

Pinout & Package

TPS54160ADGQR is housed in a thermally enhanced MSOP-10 package (3 mm × 3 mm) with exposed thermal pad (Pin 11) electrically connected to GND for PCB heat dissipation. Thermal resistance θJA = 62.5°C/W (standard board).

Key Features

Applications

Equivalent & Alternatives

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

Compared with LM5164QDDARQ1 and MP2451DT-LF-Z, the TPS54160ADGQR uniquely balances wide-input capability (60 V), medium output current (1.5 A), ultra-low IQ (116 μA), and comprehensive protection (PWRGD, OV, thermal shutdown) in a single MSOP-10 package-making it optimal for industrial and aftermarket power rails where reliability and flexibility outweigh automotive qualification or minimal footprint.

Availability

TPS54160ADGQR is available at Aetrix Electronics and suitable for industrial power supplies, automotive aftermarket electronics, smart sensor nodes, and PLC I/O modules requiring stable component supply across extended temperature ranges and long product lifecycles.

Supply support for TPS54160ADGQR 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 decades of expertise in power management IC design and manufacturing.

The TPS54160A family targets high-voltage, medium-current DC/DC conversion in industrial, automotive, and communications equipment-designed to replace discrete buck controllers and MOSFETs with integrated, thermally robust solutions.

FAQ

What is the minimum input voltage required for TPS54160ADGQR to start switching?

The TPS54160ADGQR has an internal undervoltage lockout (UVLO) threshold of 2.5 V, but startup requires VIN to exceed the enable threshold. With EN pin floating (default enabled), the device begins switching when VIN rises above approximately 2.5 V. If EN is externally biased, startup occurs when VIN exceeds the programmed UVLO point-e.g., 7.7 V rising threshold with standard resistor divider per datasheet Figure 31.

Can TPS54160ADGQR synchronize to an external clock, and what are the valid frequency and voltage levels?

Yes, TPS54160ADGQR supports external clock synchronization via the RT/CLK pin. It accepts TTL/CMOS-compatible clock signals from 300 kHz to 2.2 MHz. The pin switches from resistor-set mode to clock-input mode when pulled above 1.9 V (typical high threshold); clock pulses must exceed 40 ns minimum width, and the internal PLL achieves lock within 100 μs. This enables noise-sensitive systems to avoid beat frequencies.

How does the PWRGD output of TPS54160ADGQR behave during overvoltage conditions?

During overvoltage, the TPS54160ADGQR's PWRGD pin asserts low when VSENSE exceeds 109% of nominal output voltage. Simultaneously, the high-side MOSFET is disabled until VSENSE falls below 107%. Once regulation is restored and VSENSE remains between 94% and 107%, PWRGD deasserts (open-drain high) when pulled up externally-providing precise fault signaling without latching.

What is the recommended boot capacitor value and dielectric type for TPS54160ADGQR?

Texas Instruments specifies a 0.1-μF ceramic capacitor between BOOT and PH pins for TPS54160ADGQR. An X7R or X5R dielectric is mandatory due to stable capacitance over temperature and DC bias-Y5V or Z5U types exhibit excessive drift and risk boot voltage collapse. Mount the capacitor as close as possible to the pins to minimize loop inductance and ensure reliable high-side gate drive.

Does TPS54160ADGQR support adjustable soft-start, and how is it implemented?

Yes, TPS54160ADGQR implements adjustable soft-start via the SS/TR pin. Connect a capacitor from SS/TR to GND to set ramp time; 10 nF yields ~10-ms rise (per datasheet Equation 23). For power sequencing, apply a voltage ramp from another rail to SS/TR-its internal 2-μA charge current and 112-μA discharge current ensure controlled, repeatable startup even after thermal or UVLO faults.