Texas Instruments TPS65950A2ZXN

Overview

TPS65950A2ZXN from Texas Instruments is a highly integrated power management and audio codec IC designed for OMAP™ application processors. It integrates three buck converters (VDD1: 1.2 A, VDD2: 600 mA, VIO: 700 mA), a USB 2.0 OTG HS transceiver with ULPI interface, a Li-ion/Li-polymer battery charger supporting AC/USB/carkit sources, and a 15-bit linear audio codec with stereo Class-D drivers and differential microphone inputs - enabling compact smartphone and tablet power/audio subsystems.

For engineers reviewing the TPS65950A2ZXN datasheet, TPS65950A2ZXN pinout, TPS65950A2ZXN application, or TPS65950A2ZXN equivalent, key selection considerations include its 209-ball nFBGA package, SmartReflex™ Class-3 dynamic voltage scaling support, dual I²C interfaces (SmartReflex + general-purpose), integrated RTC with coin-cell backup charging, and hardware-automated charger type detection for AC/USB/carkit sources.

Technical Context

The TPS65950A2ZXN implements a multi-domain power architecture with dedicated buck regulators for core (VDD1), memory (VDD2), and I/O (VIO) rails, each with independent feedback and enable control. Its SmartReflex™ Class-3 interface enables real-time voltage scaling coordinated with OMAP processor activity states via dedicated VMODE1/VMODE2 pins and embedded power controller logic.

The audio subsystem features dual ADC paths (16-bit stereo, 48/44.1/32 kHz) and five DAC channels supporting PCM/TDM/I²S interfaces, with analog signal chains including MICBIAS1/2 outputs, VHSMIC bias, differential headset/earpiece/HSOL/HSOR outputs, and predriver outputs for external Class-D amplifiers - all managed through register-controlled digital mixing and automatic level control (ALC).

Key Specifications

Pinout & Package

TPS65950A2ZXN 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-244AC 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 TPS65950A3ZXN, the TPS65950A2ZXN offers lower VDD1 current but identical feature set and pin compatibility; compared with TPS65912ZQWR, it provides full audio/USB integration at the cost of larger package and higher thermal density - making it optimal for space-constrained, feature-complete handhelds.

Availability

TPS65950A2ZXN is available at Aetrix Electronics and suitable for smartphone, tablet, industrial handheld, and connected medical device applications requiring stable component supply, long-term lifecycle support, and traceable sourcing for production programs.

Supply support for TPS65950A2ZXN 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 for industrial, automotive, and consumer markets since 1930.

The TPS65950 product line was developed specifically to serve OMAP™ application processor platforms - integrating power management, audio, USB, and system control functions into a single die to reduce solution size and accelerate time-to-market for mobile and portable electronics.

FAQ

What is the primary function of the TPS65950A2ZXN in an OMAP-based system?

The TPS65950A2ZXN serves as the central power management and audio subsystem controller for OMAP™ application processors. It delivers regulated voltages to the processor core (VDD1), memory (VDD2), and I/O (VIO) domains, manages Li-ion battery charging from multiple sources, provides full-duplex audio processing via integrated 16-bit ADC/DAC, and hosts a USB 2.0 OTG HS transceiver - all within a single 209-ball nFBGA package. The TPS65950A2ZXN enables compact, thermally efficient designs by consolidating functions previously requiring multiple discrete ICs.

How does the TPS65950A2ZXN handle battery charging from different sources?

The TPS65950A2ZXN automatically detects and configures for AC-regulated chargers, USB host devices, USB chargers, and carkits using dedicated sense pins (PCHGAC, PCHGUSB, VAC, VBATS) and internal state machines. It applies hardware-controlled linear charging for AC/USB/carkit sources and supports software-controlled charging profiles for all types. The TPS65950A2ZXN includes precharge circuitry, thermal regulation, and end-of-charge termination - ensuring safe, compliant charging without host processor intervention.

Does the TPS65950A2ZXN support dynamic voltage scaling (DVS) for OMAP processors?

Yes, the TPS65950A2ZXN supports SmartReflex™ Class-3 dynamic voltage scaling via dedicated VMODE1 and VMODE2 pins that interface directly with OMAP's SmartReflex controller. This enables real-time adjustment of VDD1 and VDD2 output voltages based on processor workload, reducing dynamic power consumption. The TPS65950A2ZXN's embedded power controller (EPC) also manages power sequencing and retention modes - ensuring correct startup/shutdown order and RTC backup during sleep states.

What audio interfaces does the TPS65950A2ZXN provide, and at what sample rates?

The TPS65950A2ZXN provides PCM, I²S, and TDM digital audio interfaces plus analog microphone and speaker connections. Its 16-bit stereo ADC supports 48, 44.1, and 32 kHz sampling for voice capture, while its 16-bit stereo DAC supports 96, 48, 44.1, and 32 kHz playback. Analog inputs include differential main/sub/headset microphones with programmable bias; outputs include differential earpiece, headset, and hands-free speaker drivers - all with integrated pop-noise suppression and automatic level control. These capabilities make the TPS65950A2ZXN suitable for high-fidelity voice communication and media playback.

Is the TPS65950A2ZXN pin-compatible with other members of the TPS65950 family?

Yes, the TPS65950A2ZXN is pin-compatible with the TPS65950A3ZXN and shares the same 209-ball nFBGA package, ball map, and register set. The only functional difference is VDD1 current capability: TPS65950A2ZXN delivers 1.2 A for sub-1-GHz OMAP variants, while TPS65950A3ZXN delivers 1.4 A for 1-GHz speed grades. All other features - including USB transceiver, audio codec, SmartReflex interface, RTC, and LDO count - are identical, enabling drop-in replacement in compatible designs.