Texas Instruments TPS65022RHAR

Overview

TPS65022RHAR from Texas Instruments is a highly integrated power management IC (PMIC) for single-cell Li-Ion/Li-Polymer systems, delivering three synchronous step-down converters (1.2-A, 1-A, and 900-mA), two 200-mA general-purpose LDOs, and a 30-mA RTC LDO/switch. It supports dynamic voltage scaling for processor cores and provides battery backup, reset control, and I²C programmability. Used in OMAP, XScale, and Intel PXA270-based handhelds.

For engineers reviewing the TPS65022RHAR datasheet, TPS65022RHAR pinout, TPS65022RHAR application, or TPS65022RHAR equivalent, this page delivers verified electrical specs, validated pin functions, confirmed thermal performance (R_θJA = 31.6°C/W), real-world efficiency curves across load ranges, and accurate I²C timing compliance up to 400 kHz - all critical for portable SoC power architecture validation.

Technical Context

The TPS65022RHAR integrates three independent buck regulators with PFM/PWM hybrid operation for wide-load efficiency optimization, plus dual 200-mA LDOs with digitally selectable default outputs via DEFLDO1/DEFLDO2 pins. Its I²C interface enables runtime voltage reconfiguration, interrupt masking, and enable/disable control - essential for adaptive power management in resource-constrained mobile platforms.

It features dedicated analog and power ground domains (AGND1/AGND2, PGND1–PGND3), separate enable inputs per DC-DC channel, thermal shutdown at 160°C, and precision voltage monitoring comparators (PWRFAIL_SNS, LOWBAT_SNS) with 50 mV hysteresis. The VRTC rail includes automatic switchover between VSYSIN and VBACKUP with 12.5 Ω r_DS(on) switches.

Key Specifications

Pinout & Package

TPS65022RHAR is housed in a thermally enhanced 40-pin VQFN (RHA) package measuring 6.00 mm × 6.00 mm with an exposed PowerPAD™ connected to AGND.

Key Features

Applications

Equivalent & Alternatives

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

Compared with TPS65023RHAR and TPS65021RHAR, the TPS65022RHAR uniquely balances core PMIC functionality (three DC-DCs, two LDOs, I²C, reset) with integrated RTC backup - making it optimal for handhelds requiring time persistence without over-spec'ing LDO count or sacrificing battery switchover capability.

Availability

TPS65022RHAR is available at Aetrix Electronics and suitable for smartphone baseband power, PDA system management, Internet audio player power, and DSP-based portable radio designs requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for TPS65022RHAR 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 expertise in battery-powered portable systems.

The TPS6502x product line was designed specifically for Li-Ion/Li-Polymer powered handheld devices - integrating multiple DC-DC converters, LDOs, and system supervision functions into a single compact package to reduce board space and simplify power architecture.

FAQ

What is the maximum supported I²C clock frequency for the TPS65022RHAR?

The TPS65022RHAR supports I²C Fast-mode operation up to 400 kHz, with minimum clock high time of 600 ns and clock low time of 1300 ns. This allows direct interfacing with microcontrollers and application processors that implement standard Fast-mode I²C without requiring clock stretching or custom timing adjustments. The TPS65022RHAR's SCLK and SDAT pins are fully compliant with JEDEC JESD84-A specification.

Does the TPS65022RHAR support dynamic voltage scaling (DVS) for processor cores?

Yes, the TPS65022RHAR supports dynamic voltage scaling for the VDCDC3 core rail via its I²C interface. The device allows real-time adjustment of the core output voltage (e.g., between 1.3 V and 1.55 V) and slew rate control, enabling power-aware software to reduce CPU voltage during low-activity periods. This feature is explicitly documented in the "Dynamic Voltage Management" section of the TPS65022RHAR datasheet and used in OMAP and PXA270 reference designs.

How does the TPS65022RHAR handle battery backup for the real-time clock?

The TPS65022RHAR integrates a dedicated VRTC rail with automatic switchover between VSYSIN and VBACKUP inputs using internal 12.5 Ω switches. When VSYSIN drops below 2.65 V (rising threshold), the device seamlessly transfers load to VBACKUP (2.73–3.75 V range). The VRTC output maintains 3 V ±1% accuracy with 30 mA capability and 10 µs regulation time - ensuring uninterrupted RTC operation during main supply failure.

What thermal performance can be expected from the TPS65022RHAR in a standard PCB layout?

In a standard 4-layer PCB with 1-in² 2-oz copper pour under the PowerPAD™, the TPS65022RHAR achieves a junction-to-ambient thermal resistance (R_θJA) of 31.6°C/W. At maximum continuous power dissipation (~2.5 W), this results in a ~79°C junction rise above ambient - well within the 125°C absolute maximum rating. Thermal shutdown activates at 160°C with 20°C hysteresis, providing robust protection during transient overload conditions.

Can the default output voltages of the DC-DC converters be set without I²C communication?

Yes, the TPS65022RHAR allows hardware-selectable default voltages for all three DC-DC converters using dedicated digital input pins: DEFDCDC1 (pins VDCDC1 to 3.0/3.3 V), DEFDCDC2 (VDCDC2 to 1.8/2.5 V), and DEFDCDC3 (VDCDC3 to 1.3/1.55 V). These pins accept logic-level inputs or resistor dividers, enabling full configuration at power-on without firmware initialization - critical for boot-critical rails in standalone systems.