Texas Instruments TPS65218B101PHPR

Overview

TPS65218B101PHPR from Texas Instruments is a highly integrated power management IC (PMIC) designed for ARM® Cortex™-A8/A9 SoCs and FPGAs, featuring six DC-DC converters (three adjustable buck, one buck-boost, two low-I_Q backup rails), one adjustable LDO, three load switches, supervisor circuitry, and I²C interface (0x24). It delivers 1.1 V/1.8 A (DCDC1), 1.1 V/1.8 A (DCDC2), 1.2 V/1.8 A (DCDC3), 3.3 V/1.6 A (DCDC4), 1.0 V (DCDC5), and 1.8 V (DCDC6) with ±4–5% output voltage tolerance and operates across –40°C to +105°C for industrial HMI and ePOS systems.

For engineers reviewing the TPS65218B101PHPR datasheet, TPS65218B101PHPR pinout, TPS65218B101PHPR application, or TPS65218B101PHPR equivalent, key selection considerations include its 48-pin VQFN (6 mm × 6 mm) package, I²C-configurable sequencing, active output discharge on disable, and dual-supply capability (system rail or coin-cell) for DCDC5/DCDC6 - critical for battery-backed real-time clock and state retention in portable industrial devices.

Technical Context

The TPS65218B101PHPR integrates six independent switching regulators with dedicated feedback paths and internal MOSFETs: DCDC1–DCDC3 are synchronous buck converters supporting 0.85–1.675 V (DCDC1/2) or 0.9–3.4 V (DCDC3) outputs; DCDC4 is a buck-boost converter delivering 1.175–3.4 V; DCDC5 and DCDC6 are fixed 1.0 V and 1.8 V low-quiescent-current buck converters supplied from either main input (IN_BU) or coin-cell (CC).

Supervision includes dedicated PGOOD and PGOOD_BU outputs, ±4% monitoring of DCDC1/DCDC2, ±5% monitoring of DCDC3/DCDC4/LDO1, undervoltage lockout (UVLO), overtemperature warning/shutdown, and push-button wake-up logic. Control is implemented via a 400-kHz I²C interface (address 0x24) with register-mapped configuration of voltage, sequencing, and fault response.

Key Specifications

Pinout & Package

TPS65218B101PHPR uses a 48-pin VQFN package (6.00 mm × 6.00 mm, 0.4-mm pitch) with exposed thermal pad for enhanced thermal performance in space-constrained industrial PCB layouts.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS65218B101PHPR, TPS65217C0RSLR omits the critical buck-boost stage needed for stable 3.3-V generation from variable battery input, while TPS659122ZQWR introduces mechanical and software incompatibility despite greater feature depth - making TPS65218B101PHPR the optimal balance of integration, compatibility, and industrial ruggedness.

Availability

TPS65218B101PHPR is available at Aetrix Electronics and suitable for human-machine interface (HMI), industrial automation, and electronic point-of-sale (ePOS) systems requiring stable component supply, long-term lifecycle support, and guaranteed traceability in production environments.

Supply support for TPS65218B101PHPR 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 industrial-grade power solutions.

The TPS65218 product line was engineered specifically for ARM® Cortex™-A8/A9 SoCs and FPGA-based industrial edge devices, emphasizing robust multi-rail sequencing, battery-backup resilience, and extended temperature operation.

FAQ

What is the package type and thermal specification of the TPS65218B101PHPR?

The TPS65218B101PHPR uses a 48-pin VQFN package measuring 6.00 mm × 6.00 mm with 0.4-mm pitch and an exposed thermal pad. It is characterized across –40°C to +105°C ambient temperature, with thermal resistance θ_JA = 32.5°C/W (typical) and θ_JC = 3.5°C/W (typical) when mounted on a 4-layer PCB with 1-in² copper pour under the thermal pad. This enables reliable operation in sealed industrial enclosures without forced airflow.

Does the TPS65218B101PHPR support I²C communication, and what is its address?

Yes, the TPS65218B101PHPR features a standard-mode I²C interface operating up to 400 kHz, with a fixed 7-bit slave address of 0x24. All voltage settings, sequencing parameters, fault masks, and load-switch configurations are accessible via this interface using TI's standard register map. The SDA and SCL pins require external pull-up resistors to IN_BIAS (typically 2.7–5.5 V), and the interface remains functional across the full operating temperature range.

How does the TPS65218B101PHPR handle power failure and backup supply switchover?

The TPS65218B101PHPR implements autonomous backup switchover using the IN_BU, CC, and SYS_BU pins: when main supply drops below UVLO threshold, it seamlessly transfers DCDC5 and DCDC6 operation to the coin-cell battery (CC) without interrupting output. Simultaneously, the nPFO pin asserts low upon PFI voltage crossing the power-fail threshold, and PGOOD_BU remains asserted only if both DCDC5 and DCDC6 remain in regulation - ensuring deterministic state retention during brownout events.

What are the key differences between DCDC4 and the other buck converters in the TPS65218B101PHPR?

DCDC4 is a buck-boost converter, unlike DCDC1–DCDC3 which are buck-only. It delivers 3.3 V (default) across an input range of 2.7–5.5 V and an output range of 1.175–3.4 V, enabling stable 3.3-V rail generation even as Li-ion battery voltage falls below 3.3 V. Its architecture includes two switch pins (L4A/L4B) and supports active output discharge - distinguishing it from the single-switch buck stages and making it essential for peripherals requiring constant 3.3-V operation regardless of input decay.

Can the TPS65218B101PHPR be used in new designs, and is it recommended for long-term production?

Yes, the TPS65218B101PHPR is actively manufactured and supported by Texas Instruments for new designs. Unlike earlier revisions marked "Not Recommended for New Designs", the B101 variant carries no NRND designation and appears in TI's current production datasheet (SLDS206E, February 2021 revision) with full documentation, reference designs, and lifetime product longevity assurance. Aetrix Electronics guarantees minimum 10-year availability and provides proactive obsolescence notifications for this part.