Texas Instruments TPS65950A3ZXN

Overview

TPS65950A3ZXN from Texas Instruments is a highly integrated power management and audio codec IC designed for OMAP™ application processors. It delivers 1.4-A VDD1 buck converter (for 1-GHz operation), 600-mA VDD2, 700-mA VIO, USB 2.0 OTG HS transceiver with ULPI interface, and 15-bit linear audio codec supporting 8/16 kHz sampling - enabling compact smartphone and tablet power/audio subsystems.

For engineers reviewing the TPS65950A3ZXN datasheet, TPS65950A3ZXN pinout, TPS65950A3ZXN application, or TPS65950A3ZXN equivalent, key selection criteria include SmartReflex™ Class-3 dynamic voltage scaling support, dual 32-Ω headset drivers with differential outputs, integrated Li-ion/USB/carkit charging with hardware-controlled linear regulation, and 209-ball nFBGA (7 mm × 7 mm) package compatibility with OMAP3/4 platforms.

Technical Context

The TPS65950A3ZXN integrates three independent buck converters (VDD1/VDD2/VIO), ten external LDOs, and an embedded power controller (EPC) to manage OMAP power sequencing and retention. Its SmartReflex™ Class-3 interface enables real-time adaptive voltage scaling based on processor load and temperature feedback.

The audio subsystem includes stereo 16-bit DACs (96/48/44.1/32 kHz), stereo 16-bit ADCs (48/44.1/32 kHz), five digital microphone inputs, three differential analog mic inputs (main/sub/headset), and dual 8-Ω Class-D drivers - all synchronized via PCM/TDM/I2S interfaces and managed by dedicated audio PLL and digital mixing logic.

Key Specifications

Pinout & Package

TPS65950A3ZXN uses a 209-ball plastic ball grid array (nFBGA) package with 0.4-mm pitch and 7.0 mm × 7.0 mm body size. Ball mapping follows JEDEC MO-245 standard; corner balls (Test, TestV1, Test.RESET, TestV2) are non-functional.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar power management and audio codec applications.

Compared with TPS65950A2ZXN and TPS65912ZCVR, the TPS65950A3ZXN uniquely combines 1.4-A SmartReflex™-enabled core power, full audio codec with Class-D drivers, and CEA-936A-compliant carkit interface - making it the only option for high-performance OMAP3/4 smartphones requiring integrated voice and charging.

Availability

TPS65950A3ZXN is available at Aetrix Electronics and suitable for smartphone, tablet, and industrial handheld applications requiring stable component supply, long-term lifecycle support, and TI-authorized traceability.

Supply support for TPS65950A3ZXN 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, specializing in analog, embedded processing, and power management technologies for industrial, automotive, and consumer markets.

The TPS65950 product line was developed specifically to serve OMAP™ application processor platforms, integrating tightly coupled power sequencing, SmartReflex™ DVFS, and high-fidelity audio I/O in a single chip for mobile computing devices.

FAQ

What distinguishes TPS65950A3ZXN from the TPS65950A2ZXN variant?

The TPS65950A3ZXN provides a 1.4-A VDD1 buck converter optimized for 1-GHz OMAP processor operation, while the TPS65950A2ZXN delivers 1.2 A. Both share identical pinout, register map, and feature set - including USB 2.0 OTG, audio codec, and SmartReflex™ Class-3 support - but the A3 variant enables higher sustained core performance under thermal constraints.

Does TPS65950A3ZXN support USB On-The-Go without an external PHY?

Yes, the TPS65950A3ZXN integrates a full USB 2.0 OTG High-Speed transceiver with 12-bit ULPI interface, enabling direct connection to OMAP UTMI+ macrocells. No external PHY is required - the device handles signal integrity, termination, and protocol handshaking internally, including CEA-2011 and MCPC ME-Universal UART compliance.

Can TPS65950A3ZXN charge batteries from both USB and AC sources simultaneously?

No, the TPS65950A3ZXN automatically detects and selects a single active charging source - AC-regulated adapter, USB host, USB charger, or carkit - based on voltage, current capability, and enumeration status. It does not support concurrent charging from multiple sources to prevent overvoltage or thermal stress on the battery.

What audio sample rates does the TPS65950A3ZXN DAC support?

The TPS65950A3ZXN stereo DAC supports 96 kHz, 48 kHz, 44.1 kHz, and 32 kHz sampling rates - along with integer derivatives - across PCM and TDM interfaces. The DAC resolution is 16-bit linear, with integrated digital filtering, pop-noise suppression, and side-tone generation for hands-free voice communication.

Is the RTC in TPS65950A3ZXN functional when main power is removed?

Yes, the RTC in TPS65950A3ZXN remains fully operational during main power loss by drawing power from a backup battery connected to the VRTC pin. The device includes a dedicated coin-cell charger (VBAT → VRTC) that maintains the backup battery at optimal voltage, ensuring continuous timekeeping and alarm functionality for years.