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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - DC DC Switching Regulators

Texas Instruments TPS54225TPWPRQ1

Name: TPS54225TPWPRQ1
Brand: Texas Instruments
SKU: TPS54225TPWPRQ1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TPS54225TPWPRQ1

Manufacturer:: Texas Instruments

Category:: Voltage Regulators - DC DC Switching Regulators

Package:: 14-PowerTSSOP (0.173", 4.40mm Width)

Datasheet:: TPS54225TPWPRQ1.pdf

Description:: IC REG BUCK ADJ 2A 14HTSSOP

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Product details

Overview

TPS54225TPWPRQ1 from Texas Instruments is an automotive-grade 2-A synchronous step-down DC/DC converter with integrated high-side (160 mΩ) and low-side (110 mΩ) N-channel MOSFETs, D-CAP2™ adaptive on-time control, 700-kHz switching frequency, and 0.76 V to 5.5 V adjustable output voltage. It delivers stable power in digital TV, Blu-ray player, and STB power rails.

For engineers reviewing the TPS54225TPWPRQ1 datasheet, TPS54225TPWPRQ1 pinout, TPS54225TPWPRQ1 application, or TPS54225TPWPRQ1 equivalent, key selection considerations include its AEC-Q100 qualification, pre-biased soft-start capability, cycle-by-cycle overcurrent protection, power-good signaling, and HTSSOP-14 PowerPAD™ thermal package for automotive ambient operation up to 105°C.

Technical Context

The TPS54225TPWPRQ1 implements D-CAP2™ adaptive on-time control-combining constant on-time operation with internal ripple injection-to achieve fast transient response without external compensation. Its control loop directly senses output voltage via VFB and adjusts on-time based on VIN and VO to maintain pseudo-fixed 700-kHz operation.

It integrates dual N-FETs, a 5.5-V VREG5 LDO, programmable soft-start (via external SS capacitor), and comprehensive protection: cycle-by-cycle OCP, output OVP/UVP (115–125% / 65–75%), thermal shutdown (150°C), and UVLO (3.55–4.05 V on VREG5). The device supports ceramic output capacitors down to 22 µF due to ultra-low ESR tolerance.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	VIN = 2 V to 18 V; enables single-rail compatibility with 12-V automotive systems and wide-input industrial supplies.
Output Current	2 A continuous; sufficient for powering SoCs, FPGAs, and DDR memory subsystems in infotainment and gateway modules.
Switching Frequency	700 kHz nominal; balances EMI performance, inductor size, and efficiency across 1.05–5.5 V outputs.
FET R_DS(on)	160 mΩ (HS), 110 mΩ (LS); minimizes conduction loss at 2-A load, supporting >90% peak efficiency at 3.3 V/2 A.
Feedback Reference	0.765 V ±1.5% (–40°C to 85°C); enables precise output regulation with standard 1% resistor dividers.
Soft-Start Control	Adjustable via external SS capacitor; prevents inrush current and enables controlled ramp-up even with pre-biased outputs.
Power Good Output	Open-drain PG signal activated after 1.7× soft-start time; asserts when VOUT reaches ±10% of target, enabling system sequencing.

Pinout & Package

TPS54225TPWPRQ1 uses a 14-pin HTSSOP (PWP) package with exposed PowerPAD™ thermal pad soldered to PGND for enhanced thermal dissipation (θ_JA = 55.6°C/W). The package is qualified per AEC-Q100 Grade 2 (–40°C to 105°C).

Pin/Terminal	Circuit Role	Design Meaning
VO (Pin 1)	Output voltage sense and on-time adjustment node	Connects directly to output rail; used internally for adaptive on-time calculation and must be Kelvin-connected for accuracy.
VFB (Pin 2)	Feedback input	Monitors divided output voltage; reference threshold is 0.765 V; requires 1% resistors for stable regulation.
VREG5 (Pin 3)	5.5-V internal LDO output	Powers internal circuitry; requires 1-µF ceramic bypass to PGND; supplies VBST bootstrap charge path.
SS (Pin 4)	Soft-start timing control	Charged by 2-µA internal current source; external capacitor sets ramp time (T_SS ≈ C_SS × 0.765 / 2 µA).
GND (Pin 5)	Signal ground reference	Separate from power grounds; connects to SGND net; must tie to PGND at single point near IC.
PG (Pin 6)	Open-drain power-good indicator	Sinks up to 5 mA; requires external pull-up to VREG5 (20–150 kΩ); asserts after soft-start completion and ±10% regulation.
EN (Pin 7)	Enable logic input	Active-high (V_ENH ≥ 2 V); supports sequencing; pulls VO to PGND via 50-Ω discharge FET when disabled.
PGND1, PGND2 (Pins 8,9)	Power ground returns	Low-side FET source connections and current-sense comparator inputs; must be tied together and to PowerPAD™ with low-inductance layout.
SW1, SW2 (Pins 10,11)	Switch node terminals	Connect to inductor; carry high di/dt; require minimal trace area to reduce EMI and ringing.
VBST (Pin 12)	Bootstrap supply for high-side gate driver	Requires 0.1-µF ceramic cap to SW1/SW2; powered via internal diode from VREG5 during low-side conduction.
VIN (Pin 13)	Main power input	Supplies high-side drain and internal logic; accepts 2–18 V; requires local 10-µF ceramic + bulk capacitance.
VCC (Pin 14)	Control circuit supply	4.5–18 V input for bias regulator; can be tied to VIN or isolated for noise-sensitive applications.

Key Features

Feature	Design Value
D-CAP2™ adaptive on-time control	Eliminates external compensation components while maintaining stability with ceramic or polymer output capacitors as low as 22 µF.
Pre-biased soft start	Prevents reverse current flow into pre-charged outputs by gradually enabling low-side FET conduction-critical for hot-swap and multi-rail sequencing.
Integrated 5.5-V VREG5 LDO	Provides regulated bias for internal logic and bootstrap charging; eliminates need for external 5-V supply in most automotive designs.
Cycle-by-cycle overcurrent protection	Detects valley current in low-side FET using SW-to-PGND voltage sensing; non-latching, temperature-compensated, and responsive within one switching cycle.
AEC-Q100 Grade 2 qualification	Validated for automotive use from –40°C to 105°C ambient; includes HTOL, ESD (2 kV HBM), and board-level reliability testing per Q100 requirements.

Applications

Digital TV Power Supply	High Definition Blu-ray Disc™ Player
Use Scenario: Powers main SoC, video decoder, and HDMI interface in 4K-capable digital TVs operating from 12-V automotive or AC-DC adapter rails. IC Role / Device Role / Timing Role: Primary 1.05-V/2-A core supply with tight transient response to handle burst-mode video processing loads. Use Value: D-CAP2™ control reduces output capacitance by >50% vs. traditional PWM, shrinking BOM size and PCB area while meeting <10-mV ripple spec.	Use Scenario: Supplies 3.3-V I/O and 1.8-V memory rails in portable Blu-ray players with battery backup and 12-V wall adapter input. IC Role / Device Role / Timing Role: Dual-output capable (with external divider tuning) for independent voltage domains; PG signal synchronizes firmware boot sequence. Use Value: Pre-biased soft start avoids output collapse during battery-to-adapter switchover, ensuring uninterrupted disc read operations.
Networking Home Terminal	Digital Set Top Box (STB)
Use Scenario: Delivers 2.5-V/2-A power to Ethernet PHY and packet processor in DOCSIS 3.1 cable modems deployed in harsh residential environments. IC Role / Device Role / Timing Role: High-efficiency buck regulator with low shutdown current (<10 µA) enabling always-on wake-on-LAN functionality. Use Value: 160/110-mΩ FETs and 700-kHz switching minimize conduction and switching losses, sustaining >89% efficiency at full load and light-load PFM mode.	Use Scenario: Generates 1.2-V/2-A core voltage for ARM-based media processors and 5-V auxiliary rail for tuners in satellite/cable STBs. IC Role / Device Role / Timing Role: Single-chip solution replacing discrete controller + external MOSFETs; VREG5 powers tuner LNB bias and IR receiver. Use Value: PowerPAD™ thermal design enables 2-A operation in compact, fanless enclosures without derating-validated over –40°C to 85°C case temperature.

Digital TV Power Supply

High Definition Blu-ray Disc™ Player

Use Scenario: Powers main SoC, video decoder, and HDMI interface in 4K-capable digital TVs operating from 12-V automotive or AC-DC adapter rails.

IC Role / Device Role / Timing Role: Primary 1.05-V/2-A core supply with tight transient response to handle burst-mode video processing loads.

Use Value: D-CAP2™ control reduces output capacitance by >50% vs. traditional PWM, shrinking BOM size and PCB area while meeting <10-mV ripple spec.

Use Scenario: Supplies 3.3-V I/O and 1.8-V memory rails in portable Blu-ray players with battery backup and 12-V wall adapter input.

IC Role / Device Role / Timing Role: Dual-output capable (with external divider tuning) for independent voltage domains; PG signal synchronizes firmware boot sequence.

Use Value: Pre-biased soft start avoids output collapse during battery-to-adapter switchover, ensuring uninterrupted disc read operations.

Networking Home Terminal

Digital Set Top Box (STB)

Use Scenario: Delivers 2.5-V/2-A power to Ethernet PHY and packet processor in DOCSIS 3.1 cable modems deployed in harsh residential environments.

IC Role / Device Role / Timing Role: High-efficiency buck regulator with low shutdown current (<10 µA) enabling always-on wake-on-LAN functionality.

Use Value: 160/110-mΩ FETs and 700-kHz switching minimize conduction and switching losses, sustaining >89% efficiency at full load and light-load PFM mode.

Use Scenario: Generates 1.2-V/2-A core voltage for ARM-based media processors and 5-V auxiliary rail for tuners in satellite/cable STBs.

IC Role / Device Role / Timing Role: Single-chip solution replacing discrete controller + external MOSFETs; VREG5 powers tuner LNB bias and IR receiver.

Use Value: PowerPAD™ thermal design enables 2-A operation in compact, fanless enclosures without derating-validated over –40°C to 85°C case temperature.

Equivalent & Alternatives

The following parts are listed as comparable options for similar synchronous buck converter applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
LM26420QSQX/NOPB	2-A dual-channel buck; fixed 500-kHz frequency; no D-CAP2™; requires external compensation; 4.5–5.5 V VCC only.	Preferred for space-constrained dual-rail systems where fixed-frequency EMI control is prioritized over transient speed.	Select when needing two independent outputs or deterministic frequency; avoid if ceramic-capacitor-only design or ultra-fast load steps are required.
MPQ4312-AEC1	2-A automotive buck; 2.5–36 V input; 750-kHz switching; integrated compensation; no pre-biased soft start; different pinout.	Better suited for 24-V truck/bus systems or higher-input industrial applications where VIN exceeds 18 V.	Choose for wider input range or simplified layout (no VBST cap); verify PG timing and soft-start behavior differ from TPS54225TPWPRQ1.

Compared with LM26420QSQX/NOPB and MPQ4312-AEC1, the TPS54225TPWPRQ1 uniquely combines D-CAP2™ zero-compensation control, pre-biased soft start, and AEC-Q100 qualification in a single 14-pin HTSSOP package-making it optimal for cost-sensitive, high-transient automotive infotainment rails requiring minimal external components.

Availability

TPS54225TPWPRQ1 is available at Aetrix Electronics and suitable for digital TV power supply, Blu-ray player, and STB applications requiring stable component supply, automotive-grade reliability, and long-term production continuity.

Supply support for TPS54225TPWPRQ1 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 ICs, with decades of automotive qualification expertise and broad manufacturing scale.

The TPS54225TPWPRQ1 belongs to TI's SWIFT™ family of high-efficiency DC/DC converters, designed specifically for automotive infotainment, telematics, and ADAS subsystems demanding AEC-Q100 compliance, low EMI, and robust thermal performance.

FAQ

What is the maximum junction temperature specification for the TPS54225TPWPRQ1?

The TPS54225TPWPRQ1 has a thermal shutdown threshold of 150°C with 25°C hysteresis. Its recommended operating junction temperature range is –40°C to 125°C, and absolute maximum TJ is 150°C. The device automatically disables both FETs upon reaching the thermal limit and resumes operation after cooling below 125°C. This behavior is confirmed in the Electrical Characteristics table and Thermal Shutdown section of the SLVSAV9 datasheet.

Does the TPS54225TPWPRQ1 support ceramic output capacitors, and what is the minimum recommended value?

Yes, the TPS54225TPWPRQ1 is explicitly optimized for ceramic output capacitors, with recommended values from 22 µF to 68 µF per the Design Guide (Table 1). Its D-CAP2™ control architecture eliminates reliance on ESR-induced ripple, enabling stable operation with ultra-low-ESR ceramics (e.g., TDK C3216X5R0J226M). The device's proprietary circuit adapts to both ceramic and POSCAP/SP-CAP types without external compensation.

How does the pre-biased soft start function work in the TPS54225TPWPRQ1?

The TPS54225TPWPRQ1 implements pre-biased soft start by detecting when the feedback voltage (VFB) exceeds the internal soft-start command level. It then incrementally increases low-side FET on-time cycle-by-cycle until reaching normal duty-cycle operation-preventing reverse current flow into a pre-charged output. This ensures smooth ramp-up without sinking current from downstream circuits, critical for hot-swap and multi-rail sequencing scenarios.

What is the purpose of the VREG5 pin on the TPS54225TPWPRQ1, and how should it be decoupled?

The VREG5 pin on the TPS54225TPWPRQ1 provides a regulated 5.5-V output that powers internal control logic and serves as the charge source for the VBST bootstrap capacitor. It must be decoupled with a 1.0-µF ceramic capacitor placed as close as possible to the pin and connected directly to PGND. This capacitor stabilizes the LDO output and ensures reliable high-side gate drive under dynamic load conditions.

Can the TPS54225TPWPRQ1 operate with an input voltage lower than 4.5 V, and what are the limits?

Yes-the TPS54225TPWPRQ1 supports a wide VIN range of 2 V to 18 V, distinct from its VCC supply (4.5 V to 18 V). While VCC must remain ≥4.5 V for control circuitry operation, VIN may drop as low as 2 V (e.g., during cold-crank automotive events), provided VCC is independently supplied or maintained above 4.5 V via external bias. This dual-input architecture enables robust operation in challenging automotive environments.

TPS54225TPWPRQ1 Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: SWIFT™, D-CAP2™

Package/Case:: 14-PowerTSSOP (0.173", 4.40mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Active

Function:: Step-Down

Output Configuration:: Positive

Topology:: Buck

Output Type:: Adjustable

Number of Outputs:: 1

Voltage - Input (Min):: 2V

Voltage - Input (Max):: 18V

Voltage - Output (Min/Fixed):: 0.76V

Voltage - Output (Max):: 5.5V

Current - Output:: 2A

Frequency - Switching:: 700kHz

Synchronous Rectifier:: Yes

Operating Temperature:: -40°C ~ 105°C (TA)

Grade:: Automotive

Qualification:: AEC-Q100

Mounting Type:: Surface Mount

Supplier Device Package:: 14-HTSSOP

TPS54225TPWPRQ1 FAQ

1.How can I place an order for TPS54225TPWPRQ1 through Aetrix?

Please submit a Request for Quotation (RFQ) for TPS54225TPWPRQ1 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 TPS54225TPWPRQ1 reliable?

The price and inventory of TPS54225TPWPRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS54225TPWPRQ1 is usually 5 days.

3.What payment methods are accepted for TPS54225TPWPRQ1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS54225TPWPRQ1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TPS54225TPWPRQ1?

TPS54225TPWPRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TPS54225TPWPRQ1 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 TPS54225TPWPRQ1?

For technical support, including TPS54225TPWPRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS54225TPWPRQ1 requirements.

6.How does Aetrix verify that TPS54225TPWPRQ1 is sourced from the original manufacturer or authorized distributors?

All TPS54225TPWPRQ1 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 TPS54225TPWPRQ1 meets industry standards.

7.What is the process for return or replacement of TPS54225TPWPRQ1?

All TPS54225TPWPRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS54225TPWPRQ1, 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 TPS54225TPWPRQ1 part is unused and in its original packaging.

Return procedure for TPS54225TPWPRQ1:

1.Submit a request within 90 days.

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

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