Texas Instruments TPD5S115YFFR

Overview

TPD5S115 from Texas Instruments is an HDMI companion IC integrating a step-up DC-DC converter (2.3 V–5.5 V input → 5 V/55 mA regulated output), bidirectional level-shifting buffers for HPD, CEC, SCL, and SDA lines, and IEC 61000-4-2 Level 4 ESD protection (±14 kV contact, ±16 kV air-gap). It matches HDMI connector pin mapping and supports HDMI 2.0/1.4/1.3 compliance without external components in portable HDMI source devices.

For engineers reviewing the TPD5S115 datasheet, TPD5S115 pinout, TPD5S115 application, or TPD5S115 equivalent, this device delivers verified HDMI power management, dual-stage enable control (EN + LS_OE), rise-time acceleration for 750-pF DDC loads, and system-level ESD robustness - critical for set-top boxes, smart phones, and portable game consoles requiring compact, low-power HDMI interface solutions.

Technical Context

The TPD5S115 implements a synchronous boost converter with 3.5 MHz switching frequency, 187 µs start-up time, and ±100 mV load/line regulation over 5–65 mA output. Its level-shifting architecture features independent A-side (VCCA = 1.2–3.6 V) and B-side (5 VOUT or internal 3.3 V) rails, with auto-direction sensing and transient-boosted pullups (15 mA peak on SCL_B/SDA_B).

ESD protection is implemented per-pin: HDMI-side pins (A1, A3, B1, B2, C1) meet IEC 61000-4-2 Level 4; all I/Os exceed HBM 500 V (2000 V on select pins) and CDM 1000 V. Thermal design uses a 1.72 mm × 1.72 mm DSBGA package with RθJA = 78.2°C/W and RθJB = 13.2°C/W.

Key Specifications

Pinout & Package

TPD5S115 is housed in a 16-pin DSBGA (YFF) package measuring 1.72 mm × 1.72 mm with 0.4 mm pitch, designed for ultra-compact HDMI port integration.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar HDMI companion applications.

Compared with TPD4S012RTER and SN65DP159RSBT, the TPD5S115 uniquely integrates power conversion, bidirectional level shifting, and system-level ESD in one die - reducing solution size by >40% and eliminating four external ICs required by alternative approaches.

Availability

TPD5S115 is available at Aetrix Electronics and suitable for set-top boxes, smartphones, and portable game consoles requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing for HDMI interface subsystems.

Supply support for TPD5S115 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 connectivity technologies, with decades of HDMI interface IP development and automotive-grade reliability validation.

The TPD5S115 belongs to TI's HDMI companion IC product line, engineered specifically to consolidate power, signal translation, and ESD protection for portable and consumer HDMI source devices operating across –40°C to 85°C.

FAQ

What is the minimum input voltage required for the TPD5S115 DC-DC converter to regulate 5 V?

The TPD5S115 DC-DC converter operates down to 2.3 V on VBAT while maintaining 5 V ±130 mV regulation at up to 55 mA output. Below 2.3 V, undervoltage lockout activates (VBATUV falling threshold = 2.0 V), disabling 5VOUT to prevent unstable operation. This enables compatibility with deeply discharged single-cell Li-ion batteries.

Does the TPD5S115 support HDMI 2.0 bandwidth requirements for level shifting?

Yes - the TPD5S115 supports HDMI 2.0 through its 400 kHz maximum DDC switching frequency and sub-10 ns HPD propagation delay. Its rise-time acceleration ensures SCL_B/SDA_B meet HDMI 2.0 timing margins even with 750-pF cable loads, and its ESD rating exceeds HDMI 2.0 system-level test requirements.

How does the dual enable scheme (EN and LS_OE) reduce power consumption in portable devices?

The TPD5S115's EN pin activates only the DC-DC converter and HPD circuitry (30 µA typical), allowing early hot-plug detection before full link initialization. LS_OE enables level shifters and LDO only when needed, reducing active current from 300 µA to 2 µA in standby - extending battery life in always-on HDMI detection modes.

Can the TPD5S115 be used with a 1.2 V system supply (VCCA)?

Yes - VCCA operates from 1.2 V to 3.6 V. At 1.2 V, the TPD5S115 maintains valid logic thresholds (VIH = 0.7×VCCA = 0.84 V; VIL = 0.082×VCCA = 0.098 V) and delivers 394 ns A→B propagation delay on DDC lines, ensuring interoperability with low-voltage mobile SoCs without level-shifter degradation.

What is the purpose of the internal 3.3 V supply for CEC_B, and how is it generated?

The internal 3.3 V supply for CEC_B is generated by an LDO fed from 5VOUT when both EN and LS_OE are HIGH. This rail powers the CEC_B buffer and its 22–30 kΩ pullup, ensuring HDMI CEC compliance (3.3 V logic levels) without requiring a separate system 3.3 V rail - simplifying power architecture in space-constrained designs.