Texas Instruments TPS568230RJET

Overview

TPS568230 from Texas Instruments is an 8-A synchronous step-down voltage regulator with integrated 19.5-mΩ high-side and 9.5-mΩ low-side MOSFETs, operating from 4.5 V to 18 V input and delivering 0.6 V to 7 V output. It employs D-CAP3™ control for fast transient response without external compensation and supports FCCM, OOA, and Advanced Eco-Mode™ for optimized light-load efficiency in server point-of-load and industrial PC power rails.

For engineers reviewing the TPS568230 datasheet, TPS568230 pinout, TPS568230 application, or TPS568230 equivalent, key selection criteria include its 600/800/1-MHz selectable switching frequency, 0.6-V ±1% reference accuracy at 25°C, ULQ™ ultra-low quiescent current (105 µA), 1.3-ms internal soft-start, and HotRod™ QFN package thermal performance (R_θJA = 44.9°C/W).

Technical Context

The TPS568230 implements D-CAP3™ adaptive on-time control with internal ripple injection, enabling stable operation with ultra-low-ESR ceramic or polymer output capacitors and eliminating need for external compensation. Its MODE pin selects between FCCM (fixed-frequency, tight ripple), OOA (>25 kHz audible avoidance), and Advanced Eco-Mode™ (high efficiency at light load).

It integrates cycle-by-cycle valley-current overcurrent protection, non-latched thermal shutdown (150°C trip), UVLO (4.4 V wake-up), output discharge (420 Ω internal FET), and open-drain PGOOD with 1-ms startup delay and 85–115% threshold hysteresis - all within a 3.0-mm × 3.0-mm 20-pin VQFN HotRod™ package rated for –40°C to 125°C junction temperature.

Key Specifications

Pinout & Package

TPS568230 is housed in a 20-pin 3.0-mm × 3.0-mm VQFN HotRod™ package with exposed thermal pad (RJE suffix). Pin 1 is BST; pins 7, 8, 18, and the exposed pad are GND; pins 6, 19, 20 are SW; pins 2–5 are VIN; pin 9 is open-drain PGOOD; pin 11 is SS; pin 12 is EN; pin 14 is FB; pin 15 is MODE; pin 17 is VCC; pin 13 is AGND.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar synchronous buck regulator applications.

Compared with MP2384CGG-Z and RTQ2134BGQW, the TPS568230 uniquely combines D-CAP3™ fast transient response, ULQ™ standby current, and three selectable light-load modes in a thermally optimized 3-mm QFN - making it optimal for space-, noise-, and efficiency-constrained embedded power rails.

Availability

TPS568230 is available at Aetrix Electronics and suitable for server point-of-load, industrial PC power rails, and digital TV SoC core supplies requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.

Supply support for TPS568230 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 ICs, with decades of expertise in high-efficiency DC-DC conversion and automotive/industrial reliability standards.

The TPS568230 belongs to TI's D-CAP3™ synchronous buck regulator product line, designed specifically for high-density, low-noise, and battery-sensitive applications in networking, computing, and industrial automation where fast transient response and flexible light-load operation are critical.

FAQ

What is the recommended input capacitor configuration for TPS568230?

The TPS568230 requires low-ESR input capacitance placed close to VIN and GND pins. TI recommends a combination of one 10-µF X7R ceramic capacitor and one 1-µF X7R ceramic capacitor per VIN pin group (pins 2–5), with total effective capacitance ≥22 µF and RMS current rating ≥2 A. This minimizes input ripple and supports peak current demands during load transients without violating absolute maximum ratings.

How does the MODE pin configure light-load operation on TPS568230?

The MODE pin on TPS568230 selects between FCCM, OOA, and Advanced Eco-Mode™ using a resistor divider from VCC to AGND. Specific voltage thresholds (e.g., 0.8 V for Eco-Mode™, 1.6 V for OOA, 2.4 V for FCCM) determine behavior - enabling designers to optimize for efficiency, acoustic noise, or output ripple without changing firmware or external components.

Does TPS568230 support output voltages below 1 V, and what is the minimum achievable?

Yes, TPS568230 supports output voltages down to 0.6 V with ±1% reference accuracy at 25°C. The 0.6-V internal reference allows stable regulation of sub-1-V rails such as modern CPU cores and GPU domains. Accuracy degrades to ±1.85 mV (±0.31%) over –40°C to 125°C, verified in electrical characteristics tables.

What thermal derating applies to TPS568230 at 8-A continuous load?

At 8-A continuous output with 12-V input and 5-V output, TPS568230 dissipates ~1.6 W. With R_θJA = 44.9°C/W and 25°C ambient, junction temperature rises ~72°C - well within the 125°C max rating. For sustained 8-A operation, a 2-in² 2-oz copper thermal pad under the exposed GND pad is recommended to maintain T_J ≤ 110°C at 70°C ambient.

Can TPS568230 operate with ceramic output capacitors only, and what is the minimum recommended value?

Yes, TPS568230 is fully compatible with ultra-low-ESR ceramic output capacitors due to D-CAP3™ internal ripple injection. TI specifies a minimum 22-µF total ceramic capacitance (e.g., four 5.6-µF X5R 0805 caps) with 3-mΩ or lower ESR. This ensures stability, fast transient recovery, and <10-mV_pp ripple at full load without requiring bulk electrolytic or polymer capacitors.