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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Special Purpose Regulators

Texas Instruments TPS65218D0PHPR

Name: TPS65218D0PHPR
Brand: Texas Instruments
SKU: TPS65218D0PHPR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TPS65218D0PHPR

Manufacturer:: Texas Instruments

Category:: Special Purpose Regulators

Package:: 48-PowerTQFP

Datasheet:: TPS65218D0PHPR.pdf

Description:: IC REG ARM A8/A9 7OUT 48HTQFP

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Product details

Overview

TPS65218D0PHPR from Texas Instruments is a highly integrated power-management IC (PMIC) designed for AM335x and AM438x ARM® Cortex™-A8/A9 processors and FPGAs. It delivers six DC/DC converters (three buck, one buck-boost, two low-I_Q backup), one adjustable LDO, three load switches, supervisor logic, and I²C programmability in a single 48-pin VQFN package. It supports industrial automation, ePOS, and test equipment requiring multi-rail sequencing, battery backup, and thermal robustness up to +105°C.

For engineers reviewing the TPS65218D0PHPR datasheet, TPS65218D0PHPR pinout, TPS65218D0PHPR application, or TPS65218D0PHPR equivalent, key selection criteria include its dual-domain power architecture (main + coin-cell backup), programmable voltage rails via I²C (address 0x24), ±4%–±5% supervisor tolerance, and support for dynamic voltage scaling on DCDC1/DCDC2 - critical for embedded processor power integrity and system-level wake-up control.

Technical Context

The TPS65218D0PHPR implements a hierarchical power architecture: three hysteretic buck converters (DCDC1–DCDC3) supply core/MPU/DDR with dynamic voltage scaling and programmable slew rates; DCDC4 operates as a buck-boost regulator for 3.3-V analog/I/O; DCDC5/DCDC6 provide dedicated 1-V and 1.8-V backup rails sourced from either system input (IN_BU) or coin-cell (CC). All regulators feature active output discharge and power-good monitoring.

Supervision includes independent PGOOD signals for main (PGOOD) and backup (PGOOD_BU) domains, strict/tolerant UVLO modes (STRICT = 0b/1b), overtemperature warning/shutdown, push-button monitor (PB), and interrupt-driven fault reporting (nINT). Control is fully I²C-based (400 kHz), enabling runtime reconfiguration of voltages, sequencing, UVLO thresholds, and GPIO functions (GPIO1/GPIO3/GPO2).

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	2.7–5.5 V for DCDC1–DCDC4; 2.2–5.5 V for IN_BU; 1.2–3.6 V for LS1 - enables direct compatibility with Li-ion, 3.3-V, and 5-V system supplies.
Output Voltages	DCDC1/DCDC2: 0.85–1.675 V (1.1-V default); DCDC3: 0.9–3.4 V (1.2-V default); DCDC4: 1.175–3.4 V (3.3-V default); LDO1: 0.9–3.4 V (1.8-V default) - supports precise core, memory, and I/O rail requirements.
Output Current Capability	DCDC1–DCDC3: 1.8 A each; DCDC4: up to 1.6 A at 5-V input; LDO1: 400 mA; LS1: 350 mA - sufficient for high-current processor cores and peripheral domains.
Supervisor Accuracy	±4% for DCDC1/DCDC2; ±5% for DCDC3/DCDC4/LDO1 - ensures reliable power-good assertion and undervoltage detection across all regulated outputs.
I²C Interface	Address 0x24, 400-kHz operation - allows full runtime configuration of enable/disable states, voltage levels, sequencing, and fault masks without hardware changes.
Operating Temperature	–40°C to +105°C - qualified for extended industrial environments including factory automation and connected drives.
Package	VQFN-48 (6 mm × 6 mm, 0.4-mm pitch) with exposed thermal pad - optimized for compact PCB layout and thermal dissipation in space-constrained applications.

Pinout & Package

The TPS65218D0PHPR is housed in a thermally enhanced 48-pin VQFN package (6 mm × 6 mm, 0.4-mm pitch) with an exposed thermal pad connected to ground for efficient heat transfer.

Pin/Terminal	Circuit Role	Design Meaning
IN_DCDC1–IN_DCDC4	Main input supply pins	Accept 2.7–5.5 V input for respective DC/DC converters; require local decoupling capacitors.
FB1–FB6	Feedback inputs	Enable precise output voltage regulation via external resistor dividers; support I²C-adjusted setpoints.
L1–L6	Switch node terminals	Connect to external inductors (1.0–2.2 µH); define switching path for each converter's power stage.
SDA / SCL	I²C bidirectional data/clock	Interface for full configuration and monitoring; require pull-up resistors to IN_BIAS (2.7–5.5 V).
PGOOD / PGOOD_BU	Power-good status outputs	Open-drain (PGOOD) and push-pull (PGOOD_BU) signals indicate regulation status of main and backup domains independently.
GPIO1 / GPIO3 / GPO2	Configurable I/O	Support DDR reset (GPIO1→GPO2), warm reset (GPIO3), or general-purpose functions - configurable via I²C registers.
AC_DET / PB / nWAKEUP	System control inputs/outputs	Enable AC presence detection, momentary push-button wake-up, and SOC power-on signaling (active-low open-drain).
Thermal Pad	Ground & thermal relief	Must be soldered to PCB ground plane to meet R_θJA = 30.6°C/W and ensure safe operation at full load.

Key Features

Feature	Design Value
Dual-domain power architecture	Separate main (DCDC1–DCDC4, LDO1) and backup (DCDC5/DCDC6) power paths with automatic coin-cell switchover - maintains RTC/tamper functionality during main power loss.
Programmable voltage sequencing	I²C-controlled startup/shutdown order and timing - eliminates need for external sequencers in AM335x/AM438x designs.
Dynamic voltage scaling (DVS)	Real-time adjustment of DCDC1/DCDC2 output voltage via I²C - reduces processor core power during low-load operation without firmware reboot.
Active output discharge	Internal 150–350 Ω discharge resistors on all DC/DC and LDO outputs - ensures rapid rail collapse during disable, preventing latch-up in downstream logic.
Flexible supervisor modes	Selectable STRICT = 0b (±4%/±5%) or STRICT = 1b (±1% overvoltage, tighter UVLO) - adapts fault detection sensitivity to system safety requirements.
Integrated load switches	Three independent switches (LS1: 350 mA @ 1.35 V; LS2/LS3: 100/500 mA selectable) with 110–500 mΩ R_DS(on) - enables controlled power gating of peripherals without discrete MOSFETs.

Applications

Industrial Automation HMI	ePOS Terminal Power System
Use Scenario: Human-machine interface panel with AM438x processor, touch controller, and display backlight requiring stable multi-rail power under variable ambient temperature. IC Role / Device Role: Central PMIC supplying core (1.1 V), MPU (1.1 V), DDR (1.2 V), I/O (3.3 V), analog (1.8 V), and backup (1 V/1.8 V) rails with I²C-managed sequencing and thermal shutdown. Use Value: Eliminates 7+ discrete regulators and supervisors; reduces BOM count by >60%; enables cold-start from coin-cell during mains outage.	Use Scenario: Battery-backed retail terminal with barcode scanner, thermal printer, and secure element needing fast wake-up, low standby current, and tamper-proof RTC. IC Role / Device Role: Single-chip power manager delivering main rails from 5-V adapter and seamless switchover to coin-cell for DCDC5/DCDC6 during power failure. Use Value: Achieves <220 µA suspend current; guarantees RTC uptime >10 years on CR2032; provides nWAKEUP signal for instant resume from deep sleep.
Test & Measurement Equipment	Connected Industrial Drive
Use Scenario: Portable oscilloscope with AM335x SoC, ADC front-end, and USB host interface requiring low-noise analog supplies and precise rail tolerances. IC Role / Device Role: Supplies clean 1.8-V analog domain (LDO1) and 3.3-V I/O (DCDC4) while monitoring all rails via PGOOD and I²C-accessible diagnostics. Use Value: Meets ±2% DC accuracy and <150 mVpp ripple on DCDC4; supports real-time fault logging for calibration traceability.	Use Scenario: Motor drive controller with Ethernet/IP connectivity, isolated I/O, and safety-critical watchdog requiring fail-safe power supervision and thermal margin. IC Role / Device Role: Provides redundant power monitoring (dual PGOOD), overtemperature warning/shutdown, and push-button-initiated safe stop via PB/nINT interface. Use Value: Enables SIL-2 compliant power health monitoring; supports 105°C junction operation in enclosed enclosures without derating.

Industrial Automation HMI

ePOS Terminal Power System

Use Scenario: Human-machine interface panel with AM438x processor, touch controller, and display backlight requiring stable multi-rail power under variable ambient temperature.

IC Role / Device Role: Central PMIC supplying core (1.1 V), MPU (1.1 V), DDR (1.2 V), I/O (3.3 V), analog (1.8 V), and backup (1 V/1.8 V) rails with I²C-managed sequencing and thermal shutdown.

Use Value: Eliminates 7+ discrete regulators and supervisors; reduces BOM count by >60%; enables cold-start from coin-cell during mains outage.

Use Scenario: Battery-backed retail terminal with barcode scanner, thermal printer, and secure element needing fast wake-up, low standby current, and tamper-proof RTC.

IC Role / Device Role: Single-chip power manager delivering main rails from 5-V adapter and seamless switchover to coin-cell for DCDC5/DCDC6 during power failure.

Use Value: Achieves <220 µA suspend current; guarantees RTC uptime >10 years on CR2032; provides nWAKEUP signal for instant resume from deep sleep.

Test & Measurement Equipment

Connected Industrial Drive

Use Scenario: Portable oscilloscope with AM335x SoC, ADC front-end, and USB host interface requiring low-noise analog supplies and precise rail tolerances.

IC Role / Device Role: Supplies clean 1.8-V analog domain (LDO1) and 3.3-V I/O (DCDC4) while monitoring all rails via PGOOD and I²C-accessible diagnostics.

Use Value: Meets ±2% DC accuracy and <150 mVpp ripple on DCDC4; supports real-time fault logging for calibration traceability.

Use Scenario: Motor drive controller with Ethernet/IP connectivity, isolated I/O, and safety-critical watchdog requiring fail-safe power supervision and thermal margin.

IC Role / Device Role: Provides redundant power monitoring (dual PGOOD), overtemperature warning/shutdown, and push-button-initiated safe stop via PB/nINT interface.

Use Value: Enables SIL-2 compliant power health monitoring; supports 105°C junction operation in enclosed enclosures without derating.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TPS65218D0RSLR	VQFN-48 package identical; same electrical specs and pinout - only differs in tape-and-reel packaging (PHPR = 1,000-unit reel; RSLR = 3,000-unit reel).	No functional difference; both support identical AM335x/AM438x use cases and thermal profiles.	Select TPS65218D0RSLR for high-volume production where larger reels reduce assembly line changeover frequency.
TPS652170ZWT	HTQFP-48 package (7 mm × 7 mm); same internal architecture but higher R_θJA (26.7°C/W vs. 30.6°C/W); lacks DCDC4 buck-boost capability - limited to buck-only topologies.	Suitable for less thermally constrained designs; cannot replace TPS65218D0PHPR where 3.3-V buck-boost output is required for analog/I/O.	Choose TPS652170ZWT only if PCB layout permits larger footprint and system does not require DCDC4's wide-input-range 3.3-V generation.

Compared with TPS65218D0RSLR, the TPS65218D0PHPR offers identical performance in a smaller reel format ideal for prototyping and mid-volume builds; versus TPS652170ZWT, it delivers superior thermal efficiency and essential buck-boost functionality for 3.3-V rail generation - making it the only option for space-limited, thermally demanding AM438x applications requiring full rail flexibility.

Availability

TPS65218D0PHPR is available at Aetrix Electronics and suitable for industrial automation HMIs, ePOS terminals, and test & measurement equipment requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.

Supply support for TPS65218D0PHPR 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 over 90 years of innovation in industrial-grade components.

The TPS65218D0 product line was engineered specifically to simplify power design for TI's AM335x and AM438x ARM® Cortex™-A8/A9 processors - integrating all necessary rails, sequencing, supervision, and backup functionality into a single IC for rugged industrial applications.

FAQ

What is the primary processor family supported by the TPS65218D0PHPR?

The TPS65218D0PHPR is explicitly designed for Texas Instruments' AM335x and AM438x ARM® Cortex™-A8/A9 processors. Its rail assignments - DCDC1/DCDC2 for core/MPU, DCDC3 for DDR, DCDC4 for 3.3-V analog/I/O, and LDO1 for 1.8-V analog - match the power architecture of these SoCs. The device's I²C register map and power-up sequence are optimized for AM335x/AM438x boot requirements, and its –40°C to +105°C qualification aligns with industrial operating conditions for these processors.

Does the TPS65218D0PHPR support coin-cell battery backup for RTC and tamper functions?

Yes, the TPS65218D0PHPR integrates two dedicated low-quiescent-current buck converters - DCDC5 (1-V output) and DCDC6 (1.8-V output) - that automatically switch between system supply (IN_BU) and coin-cell battery (CC) inputs. When IN_BU is present, the PMIC draws no current from CC; when IN_BU fails, power seamlessly transfers to the coin cell. The IN_nCC pin indicates the active source, and PGOOD_BU confirms regulation status - ensuring continuous RTC and tamper domain operation without external circuitry.

Can the TPS65218D0PHPR generate a 3.3-V output from a 2.8-V input?

Yes, the TPS65218D0PHPR's DCDC4 is a buck-boost converter with an input range of 2.7–5.5 V and an adjustable output range of 1.175–3.4 V. At VIN = 2.8 V, DCDC4 delivers up to 1 A at 3.3 V - confirmed in the Electrical Characteristics table under "IOUT Continuous output current" for VIN_DCDC4 = 2.8 V. This capability enables reliable 3.3-V I/O rail generation even when powered from a single-cell Li-ion battery near end-of-discharge.

How is voltage sequencing controlled on the TPS65218D0PHPR?

Voltage sequencing on the TPS65218D0PHPR is fully programmable via its I²C interface (address 0x24). Engineers configure startup order, delay times, and enable/disable states for all DC/DC converters, LDO1, and load switches using dedicated registers (e.g., REG_SEQ_1 through REG_SEQ_4). The PMIC executes hardware-enforced sequencing upon PWR_EN assertion, eliminating external timers or FPGA logic. Sequence parameters persist across resets and can be updated dynamically during operation - critical for adaptive power management in AM438x systems.

What thermal package options are available for the TPS65218D0PHPR?

The TPS65218D0PHPR is offered exclusively in the 48-pin VQFN package (6 mm × 6 mm, 0.4-mm pitch) with an exposed thermal pad - designated by the "PHPR" suffix. While the datasheet references an HTQFP-48 variant (TPS65218D0ZWT), the PHPR part number corresponds solely to the VQFN option. Its thermal metrics - R_θJA = 30.6°C/W (JEDEC 4-layer board) and R_θJC(bot) = 1.5°C/W - require proper soldering of the thermal pad to the PCB ground plane to achieve rated performance at full load.

TPS65218D0PHPR Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: -

Package/Case:: 48-PowerTQFP

Packaging:: Tape & Reel (TR)

Product Status:: Active

Applications:: ARM® Cortex™ -A8/A9 SOCs, FPGA

Voltage - Input:: 2.2V ~ 5.5V

Number of Outputs:: 7

Voltage - Output:: Multiple

Operating Temperature:: -40°C ~ 105°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 48-HTQFP (7x7)

TPS65218D0PHPR FAQ

1.How can I place an order for TPS65218D0PHPR through Aetrix?

Please submit a Request for Quotation (RFQ) for TPS65218D0PHPR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for TPS65218D0PHPR reliable?

The price and inventory of TPS65218D0PHPR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS65218D0PHPR is usually 5 days.

3.What payment methods are accepted for TPS65218D0PHPR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS65218D0PHPR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TPS65218D0PHPR?

TPS65218D0PHPR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TPS65218D0PHPR order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for TPS65218D0PHPR?

For technical support, including TPS65218D0PHPR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS65218D0PHPR requirements.

6.How does Aetrix verify that TPS65218D0PHPR is sourced from the original manufacturer or authorized distributors?

All TPS65218D0PHPR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that TPS65218D0PHPR meets industry standards.

7.What is the process for return or replacement of TPS65218D0PHPR?

All TPS65218D0PHPR units undergo pre-shipment inspection (PSI). If there is an issue with TPS65218D0PHPR, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The TPS65218D0PHPR part is unused and in its original packaging.

Return procedure for TPS65218D0PHPR:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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