Texas Instruments TPS552892RYQR

Overview

TPS552892 from Texas Instruments is a fully integrated 36-V, 8-A synchronous buck-boost DC/DC converter with four internal MOSFETs, programmable 0.8–22 V output, ±1% reference accuracy, and average current-mode control. It delivers up to 60 W from 12-V input in boost mode and supports seamless mode transition across buck/buck-boost/boost based on VIN–VOUT relationship-used in high-density power rails for portable computing and USB PD-compatible adapters.

For engineers reviewing the TPS552892 datasheet, TPS552892 pinout, TPS552892 application, or TPS552892 equivalent, this page provides verified functional identity, validated 21-pin VQFN-HR package mapping, confirmed 8-A average inductor current limit, real-world efficiency curves (96% @ 12 V→20 V/3 A), and two technically documented alternative parts with explicit differences in current rating and frequency range.

Technical Context

The TPS552892 employs average current-mode control with an internal error amplifier (190 µA/V transconductance) and programmable switching frequency (200 kHz–2.2 MHz via external resistor or external clock sync). Its dual-mode operation-FPWM at medium/heavy load and auto-PFM or forced PWM at light load-enables high efficiency across full load range while minimizing EMI through optional ±7% spread spectrum.

It integrates protection including output overvoltage (22.5–24.5 V trip), hiccup-mode short-circuit response (76-ms off time), thermal shutdown (175 °C), and dual-level current limiting: 8-A average inductor limit plus cycle-by-cycle peak limits (12–13 A). Cable droop compensation is implemented via CDC pin with 50-mV current-sense threshold and proportional voltage output.

Key Specifications

Pinout & Package

VQFN-HR (RYQ) package: 3.0 mm × 5.0 mm, 21-pin, wettable flank, exposed thermal pad. Pin 1 marked by top-side dot; pin numbering follows standard counter-clockwise sequence from top-left corner.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar buck-boost converter applications.

Compared with TPS552892, TPS63802YFFR offers smaller solution size but sacrifices 50% current capacity and all cable compensation features, while MP2918GQ-Z provides broader vendor support but omits key protections like hiccup-mode SC response and ±1% reference accuracy.

Availability

TPS552892 is available at Aetrix Electronics and suitable for docking stations, industrial PCs, and wireless charging transmitters requiring stable component supply, long-term lifecycle assurance, and traceable sourcing for production programs.

Supply support for TPS552892 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 TPS552892 belongs to TI's high-density buck-boost converter product line, engineered for USB PD, portable computing, and industrial power systems demanding wide VIN/VOUT range, integrated protection, and minimal external components.

FAQ

What is the maximum output power capability of the TPS552892?

The TPS552892 delivers up to 60 W from a 12-V input in boost mode and 45 W from a 9-V input, constrained by its 8-A average inductor current limit and thermal design. Actual power depends on layout, ambient temperature, and heatsinking - the 3.0 × 5.0 mm VQFN-HR package supports up to 27.5°C/W junction-to-ambient thermal resistance on optimized PCBs. The TPS552892 maintains regulation across full 0.8–22 V output range.

Does the TPS552892 support synchronization to an external clock?

Yes, the TPS552892 supports external clock synchronization via the DITH/SYNC pin, which accepts TTL/CMOS-compatible clock signals with minimum pulse width of 50 ns. When an external clock is applied, the internal oscillator locks to it - enabling noise-sensitive systems to avoid frequency interference. The TPS552892 also allows disabling dithering by pulling DITH/SYNC above 1.2 V or grounding it.

How does cable droop compensation work on the TPS552892?

Cable droop compensation on the TPS552892 uses the CDC pin to output a voltage proportional to the ISP–ISN current-sense voltage (50 mV nominal). An external resistor from CDC to AGND generates a correction current injected into the FB node, raising VOUT to offset IR drop across output cables. This maintains load-end voltage accuracy without requiring remote sensing traces - a key advantage in compact docking and power bank designs.

What protection features are integrated into the TPS552892?

The TPS552892 integrates output overvoltage protection (22.5–24.5 V trip), hiccup-mode short-circuit response (76-ms off time), thermal shutdown (175 °C), and dual-level current limiting: 8-A average inductor limit plus cycle-by-cycle peak limits (12–13 A). It also includes EN/UVLO hysteresis (10 mV) and soft-start (3.6 ms) to prevent inrush - all implemented without external components.

Can the TPS552892 operate with input voltage below 3 V?

No, the TPS552892 has a minimum input voltage rating of 3.0 V per absolute maximum and recommended operating conditions. Below 2.7 V (VIN falling), the device disables due to internal UVLO. The EN/UVLO pin supports programmable UVLO down to ~2.6 V, but operation below 3.0 V is outside specification and not guaranteed - the TPS552892 requires ≥3.0 V at VIN to enable switching and maintain regulation.