Texas Instruments TPS650830ZAJT

Overview

TPS650830ZAJT from Texas Instruments is a highly integrated power management IC (PMIC) designed for Intel Skylake/KabyLake-based mobile computers. It integrates five reconfigurable step-down regulators (VR1–VR5), three fixed LDOs (LDO1/LDO3/LDO5), a 3.3-V load switch, seven powergood comparators, and I²C programmable control. Key confirmed parameters: VR1 = 1.0 V (±1% DC accuracy), VR2 = 1.8 V (2 A internal FET), VR3 = 3.3 V, VR4 = 1.2/1.35/1.1 V DDRx VDDQ, VR5 = 5 V; input range up to 24 V; 7×7 mm NFBGA-168 package.

For engineers reviewing the TPS650830ZAJT datasheet, TPS650830ZAJT pinout, TPS650830ZAJT application, or TPS650830ZAJT equivalent, this page delivers verified regulator configurations, exact pin-to-function mapping for the ZAJ package, Intel platform-specific sequencing logic, thermal and quiescent current specs, and validated alternative PMICs for ultrabook and tablet power architecture migration.

Technical Context

The TPS650830ZAJT implements a hybrid power architecture combining four external-FET synchronous buck controllers (VR1, VR3, VR4, VR5) with one internal-FET synchronous buck converter (VR2), plus dedicated LDOs for DDRx VTT (LDO1), EC_VCC (3.3-V load switch), and auxiliary rails (LDO3, LDO5). Its I²C interface supports Fast-Mode Plus (1 MHz) for dynamic voltage scaling (DVS) and real-time rail monitoring.

Sequencing is managed via seven independent powergood comparators and programmable logic that coordinates startup/shutdown of external load switches and VRs - critical for NVDC/non-NVDC Intel platforms. Board temperature sensing, RTC backup selection, and 1-Hz EC-wake clock generation are integrated, with all functions validated for Type 4 PCB implementation using the 7×7 mm NFBGA package.

Key Specifications

Pinout & Package

TPS650830ZAJT uses a 7×7 mm, 168-ball NFBGA package (ZAJ suffix), qualified for high-density mobile computing PCBs. Pin assignment follows TI's standard layout for Intel reference designs, with dedicated analog ground planes (AGND1–AGND4), isolated power domains (VDDIO, VDDPG), and VR-specific gate drivers.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar multi-rail PMIC applications.

Compared with TPS650830ZAJT, TPS650861ZQK extends platform longevity with USB-C PD but sacrifices DDRx flexibility, while MAX77818EWJ+ reduces footprint at the cost of integrated DDR support - both require schematic and layout revision for migration.

Availability

TPS650830ZAJT is available at Aetrix Electronics and suitable for ultrabook, tablet, and 2-in-1 mobile computer designs requiring stable component supply, long-lifecycle support, and Intel platform qualification.

Supply support for TPS650830ZAJT 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 technologies, with decades of experience in mobile computing power solutions.

The TPS650830 product line was engineered specifically for Intel's Skylake and KabyLake processor platforms, delivering merged-rail power architectures, NVDC compliance, and full DDR3/DDR4 memory subsystem support in minimal PCB area.

FAQ

What is the maximum input voltage supported by TPS650830ZAJT for its buck controllers?

The TPS650830ZAJT supports up to 24 V input on its four external-FET buck controllers (VR1, VR3, VR4, VR5), enabling direct connection to wide-range adapters and multi-cell battery packs. The VR2 converter has a separate 3 V–3.6 V input domain optimized for low-voltage auxiliary rails. This dual-input architecture allows TPS650830ZAJT to serve as the sole PMIC across diverse mobile computing power topologies without external regulators.

Does TPS650830ZAJT support DDR4 memory VDDQ voltage selection?

Yes, TPS650830ZAJT supports DDR4 VDDQ via its VR4 regulator, which is programmable to 1.2 V, 1.35 V, or 1.1 V using the DDRID pin - matching JEDEC DDR4-2400/2666 specifications. The 1.35 V setting aligns with DDR4 standard operation, while 1.1 V supports LPDDR4 low-power modes. This configurability is explicitly documented in the device's power map for Skylake/KabyLake platforms and validated in TI's reference schematics.

How does TPS650830ZAJT implement DDRx VTT regulation?

TPS650830ZAJT integrates LDO1 as a dedicated sink/source VTT regulator with output options of 0.6 V, 0.675 V, or 0.55 V - covering DDR3, DDR3L, and DDR4 termination requirements. It delivers up to 1 A continuous and 2 A peak current with ±5% DC+AC accuracy, and its enable/control is linked to DDR_VTT_CTRL to coordinate with VR4 VDDQ sequencing. This eliminates the need for external VTT ICs in Intel reference designs.

Is TPS650830ZAJT pin-compatible with other members of the TPS6508x family?

No, TPS650830ZAJT is not pin-compatible with other TPS6508x variants such as TPS650861ZQK. Although both use 168-ball NFBGA packages, their pinouts differ significantly - particularly in gate driver assignments (e.g., DRVHVR4 location), power-good outputs, and I/O configuration. Migration requires PCB redesign and firmware adaptation, as confirmed by TI's mechanical packaging documentation and pin function tables.

What thermal performance can be expected from TPS650830ZAJT in a 7×7 mm NFBGA package?

TPS650830ZAJT is rated for θ_JA = 32.5°C/W (JEDEC High-K board) and operates up to 85°C ambient with proper PCB copper pour and thermal vias under full load. Its thermal shutdown activates at 125°C junction temperature, and the integrated temperature sensor provides real-time monitoring via I²C. Layout guidelines in the datasheet mandate minimum 4×4 array of thermal vias under the exposed die pad to maintain reliability in sustained 2-A VR2 operation.