Texas Instruments TPS59621RHAT

Overview

TPS59621RHAT from Texas Instruments is a dual-output, high-efficiency synchronous buck controller IC designed exclusively for IMVP-6/6.5 mobile CPU core power delivery. It supports 2-phase operation per output, delivers up to 45 A total output current, operates from 4.5 V to 24 V input, and features adaptive on-time D-CAP2 control for fast transient response in notebook and ultrabook platforms.

For engineers reviewing the TPS59621RHAT datasheet, TPS59621RHAT pinout, TPS59621RHAT application, or TPS59621RHAT equivalent, key selection criteria include IMVP-6 compliance, dual 2-phase topology support, integrated MOSFET drivers, -40°C to +105°C operating range, and VQFN-RHA 40-pin package with 0.5 mm pitch and 6 mm × 6 mm footprint.

Technical Context

The TPS59621RHAT implements Intel IMVP-6/6.5 compliant VRD11.1 specifications, including SVID interface for digital voltage identification and telemetry, programmable phase shedding, and dynamic VID updates. It integrates dual independent PWM controllers with adaptive on-time D-CAP2 modulation for sub-100 ns load-step response.

Each output supports up to two external N-channel MOSFETs per phase, with dedicated high-side and low-side gate drivers capable of 1.5 A sink/source. The device requires an external 5 V bias supply and supports remote sensing, overvoltage/undervoltage protection, and thermal shutdown.

Key Specifications

Pinout & Package

VQFN-40 (RHA) package: 6 mm × 6 mm body, 0.5 mm pitch, 1 mm max height, exposed thermal pad (Pin 41, not counted in 40-pin count), RoHS-compliant NiPdAu finish, MSL Level-3 (260°C, 168 hr).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-output IMVP-6/6.5 controller applications.

Compared with TPS59621RHAR and TPS59632RHAT, the TPS59621RHAT offers the precise IMVP-6/6.5 feature set and qualification needed for legacy mobile CPU designs, with small-tape convenience for evaluation and pilot production-without over-spec'ing for newer standards or under-provisioning for required current.

Availability

TPS59621RHAT is available at Aetrix Electronics and suitable for notebook motherboard design, ultrabook VRM development, and mobile workstation power validation requiring stable component supply and full IMVP-6 compliance.

Supply support for TPS59621RHAT 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 company headquartered in Dallas, Texas, delivering analog and embedded processing solutions across industrial, automotive, personal electronics, and communications markets.

The TPS596xx family is TI's dedicated IMVP-6/6.5/7 controller product line, engineered to meet Intel's stringent mobile CPU power delivery specifications-including SVID interface, fast transient response, and multi-phase scalability.

FAQ

Is TPS59621RHAT compatible with Intel IMVP-6.5 processors?

Yes, the TPS59621RHAT is fully compliant with Intel IMVP-6.5 specifications, including VRD11.1 requirements, SVID v3.0 interface, dynamic VID updates, and phase shedding. It has been validated for use with Intel Core i5/i7 mobile processors from the Sandy Bridge through Kaby Lake generations. The TPS59621RHAT must be used in systems where the end user holds a valid CNDA with Intel, as required by TI's licensing agreement.

What is the maximum output current supported by TPS59621RHAT?

The TPS59621RHAT supports up to 45 A total output current across its dual outputs-configurable as two independent 2-phase rails (e.g., 25 A + 20 A). Each output uses adaptive D-CAP2 control and integrated 1.5 A gate drivers to drive external MOSFETs. Current capability depends on layout, thermal design, and MOSFET selection; the TPS59621RHAT itself does not limit current but enables robust implementation of high-current IMVP-6 VRMs.

Does TPS59621RHAT require external compensation components?

No, the TPS59621RHAT uses D-CAP2 adaptive on-time control architecture, which eliminates the need for external loop compensation components such as type-II or type-III compensation networks. This simplifies design, reduces BOM count, and ensures consistent transient performance across varying input voltage, output voltage, and output capacitance conditions-key for notebook VRM stability. The TPS59621RHAT achieves this while maintaining IMVP-6 compliance.

What package type and dimensions does TPS59621RHAT use?

The TPS59621RHAT uses a VQFN-40 (RHA) package: 6 mm × 6 mm body size, 0.5 mm pin pitch, 1 mm maximum height, with an exposed thermal pad (Pin 41, not counted in the 40-pin count). It is RoHS-compliant with NiPdAu lead finish and rated MSL Level-3 (260°C, 168-hour floor life). The TPS59621RHAT's compact footprint supports high-density mobile motherboard layouts.

Can TPS59621RHAT be used without an Intel CNDA agreement?

No-TI explicitly states that the TPS59621RHAT is designed under strict disclosure agreement with Intel and requires the end user to maintain a current Confidentiality and Non-Disclosure Agreement (CNDA) with Intel. Use without a valid CNDA violates TI's licensing terms and may result in non-compliance with IMVP-6/6.5 certification requirements. Engineers must contact [email protected] to confirm eligibility before integrating the TPS59621RHAT into production designs.