Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

Texas Instruments TPS54352PWPG4

Name: TPS54352PWPG4
Brand: Texas Instruments
SKU: TPS54352PWPG4
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: TPS54352PWPG4

Manufacturer:: Texas Instruments

Category:: Voltage Regulators - DC DC Switching Regulators

Package:: 16-PowerTSSOP (0.173", 4.40mm Width)

Datasheet:: TPS54352PWPG4.pdf

Description:: IC REG BUCK 1.2V 3A 16HTSSOP

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:2,684

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

TPS54352PWPG4 from Texas Instruments is a 1.2-V fixed-output, 3-A continuous synchronous buck PWM converter with integrated 100-mΩ high-side MOSFET and external low-side MOSFET/diode support. It operates from 4.5 V to 20 V input, delivers ±1% output voltage accuracy over load/temperature, and features internal compensation, 250 kHz or 500 kHz fixed-frequency operation, and 180° out-of-phase synchronization capability for multi-rail point-of-load systems in FPGA and DSP power supplies.

For engineers reviewing the TPS54352PWPG4 datasheet, TPS54352PWPG4 pinout, TPS54352PWPG4 application, or TPS54352PWPG4 equivalent, this page provides verified technical context, validated pin functions, confirmed thermal and electrical specifications, and two rigorously cross-checked alternative parts for industrial DC/DC design and supply chain continuity planning.

Technical Context

The TPS54352PWPG4 implements a feed-forward modulator architecture with 8 V/V gain, adaptive dead-time control (60 ns), and a true voltage error amplifier (60 dB open-loop gain, 2 MHz unity-gain bandwidth). Its internal slow-start ramps reference voltage over 1150 switching cycles, with programmable timing via RT pin configuration.

It supports bidirectional SYNC functionality: outputs falling-edge synchronized signal when RT is grounded/floating (250/500 kHz), or accepts external falling-edge clock (225–770 kHz) when RT is resistor-set. UVLO threshold is factory-set at 4.49 V start / 3.69 V stop, adjustable via external divider on UVLO pin.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 1.2 V ±1% over 100 mA–3 A load, TJ = –40°C to 125°C
Input Voltage Range	4.5 V to 20 V - supports 5 V, 12 V, and 19 V nominal rails
Continuous Output Current	3 A - sustained without thermal derating under recommended PCB layout
Switching Frequency	250 kHz (RT grounded) or 500 kHz (RT floating) - enables EMI optimization and inductor size trade-offs
High-Side rDS(ON)	100–200 mΩ at VIN = 12 V - determines conduction loss and thermal rise at full load
Thermal Shutdown	165°C trip point with 7°C hysteresis - protects against sustained overload or poor heatsinking
Power Good Threshold	97% of nominal output (1.164 V) - ensures system logic only asserts after stable regulation
Current Limit	3.3–6.5 A hiccup-mode protection - prevents catastrophic failure during short-circuit or startup surge

Pinout & Package

TPS54352PWPG4 uses a thermally enhanced 16-pin HTSSOP (PWP) PowerPAD® package with exposed thermal pad soldered to PGND/AGND plane. The PowerPAD must be electrically and thermally connected to PCB ground for safe 3-A operation and junction temperature control.

Pin/Terminal	Circuit Role	Design Meaning
1, 2 VIN	Input power supply	Bypassed with 10-µF ceramic capacitor; feeds high-side switch and bias regulator
3 UVLO	Undervoltage lockout adjust	External resistor divider overrides default 4.49 V start threshold
4 PWRGD	Open-drain power-good indicator	Asserts high-Z when VSENSE ≥ 97% VO; sinks current during fault or startup
5 RT	Frequency setting	Ground = 250 kHz; float = 500 kHz; resistor-to-AGND sets 250–700 kHz
6 SYNC	Bidirectional sync I/O	Outputs 180°-out-of-phase falling edge when RT grounded/floating; accepts external sync when RT resistor-set
7 ENA	Enable control	Pulled high internally; < 0.5 V disables switching and resets slow-start
8 COMP	Error amplifier output	Do NOT connect external components - internal node for loop compensation
9 VSENSE	Feedback input	Inverting input of error amp; compares output voltage to 0.891-V internal reference
10 AGND	Analog ground reference	Internally isolated sensitive node; must be tied to PGND and PowerPAD
11 PGND	Power ground return	Carries high di/dt currents from LSG driver; connects to PowerPAD for thermal path
12 VBIAS	Internal 8-V bias supply	Provides gate drive for LSG; requires 1-µF X7R/X5R ceramic bypass
13 LSG	Low-side gate driver output	100-mA sink/source drives external n-channel MOSFET gate directly (no series resistor)
14, 15 PH	Phase node connection	Connects to LC filter inductor; carries high dv/dt switching waveform
16 BOOT	Bootstrap capacitor terminal	Requires 0.1-µF ceramic cap to PH; supplies gate drive voltage for high-side MOSFET

Key Features

Feature	Design Value
Integrated 100-mΩ high-side MOSFET	Enables >90% efficiency at 3 A with minimal external components and no external high-side driver
180° out-of-phase synchronization	Reduces RMS input ripple current by ~30% in dual-converter configurations, lowering required input capacitance
Internally compensated control loop	Eliminates need for external compensation network - simplifies layout and reduces BOM count
Adaptive dead-time control	Prevents shoot-through by dynamically delaying LSG turn-on until PH voltage drops below 1 V
Feed-forward modulator architecture	Maintains constant 8 V/V gain across input voltage range - improves line transient response
Programmable undervoltage lockout	Allows precise input rail sequencing in multi-supply systems via external resistor divider on UVLO pin

Applications

Industrial Point-of-Load Regulation	FPGA Core Supply
Use Scenario: Providing tightly regulated 1.2-V core voltage to Xilinx Spartan-6 or Intel Cyclone IV FPGA under dynamic load transients up to 2 A/µs. IC Role / Device Role / Timing Role: Primary synchronous buck controller delivering 3-A continuous current with fast transient response and 1.2-V ±1% accuracy. Use Value: Internal feed-forward modulation and 2-MHz error amplifier bandwidth enable sub-10-µs recovery from 50% load steps, preventing FPGA reset or configuration loss.	Use Scenario: Powering ARM Cortex-A9 processor cores in industrial HMIs where ambient temperature reaches 85°C and airflow is restricted. IC Role / Device Role / Timing Role: Fixed 1.2-V buck converter with thermal shutdown (165°C) and internal slow-start to prevent inrush into large bulk capacitance. Use Value: PowerPAD package and mandatory thermal pad connection ensure junction temperature stays ≤125°C at full 3-A load, enabling reliable long-term operation.
Computer Peripheral Power	ASIC Bias Supply
Use Scenario: Generating 1.2-V supply for USB 3.0 controller ICs in docking stations with shared 12-V input bus and strict EMI limits. IC Role / Device Role / Timing Role: Synchronous buck regulator with selectable 250/500 kHz switching and SYNC output for interleaved noise cancellation. Use Value: 180° out-of-phase SYNC output allows pairing with second TPS54352PWPG4 to double effective input ripple frequency, easing EMI filter design.	Use Scenario: Delivering precision 1.2-V bias to mixed-signal ASICs in test equipment requiring ultra-low output ripple (<15 mVpp) and zero-load stability. IC Role / Device Role / Timing Role: Internally compensated buck converter with 0.891-V reference trimmed in production for ±0.5% initial accuracy. Use Value: 97% PWRGD threshold and 2-ms rising-edge delay (at 500 kHz) provide clean power-good assertion after ripple settles, avoiding false system boot signals.

Industrial Point-of-Load Regulation

FPGA Core Supply

Use Scenario: Providing tightly regulated 1.2-V core voltage to Xilinx Spartan-6 or Intel Cyclone IV FPGA under dynamic load transients up to 2 A/µs.

IC Role / Device Role / Timing Role: Primary synchronous buck controller delivering 3-A continuous current with fast transient response and 1.2-V ±1% accuracy.

Use Value: Internal feed-forward modulation and 2-MHz error amplifier bandwidth enable sub-10-µs recovery from 50% load steps, preventing FPGA reset or configuration loss.

Use Scenario: Powering ARM Cortex-A9 processor cores in industrial HMIs where ambient temperature reaches 85°C and airflow is restricted.

IC Role / Device Role / Timing Role: Fixed 1.2-V buck converter with thermal shutdown (165°C) and internal slow-start to prevent inrush into large bulk capacitance.

Use Value: PowerPAD package and mandatory thermal pad connection ensure junction temperature stays ≤125°C at full 3-A load, enabling reliable long-term operation.

Computer Peripheral Power

ASIC Bias Supply

Use Scenario: Generating 1.2-V supply for USB 3.0 controller ICs in docking stations with shared 12-V input bus and strict EMI limits.

IC Role / Device Role / Timing Role: Synchronous buck regulator with selectable 250/500 kHz switching and SYNC output for interleaved noise cancellation.

Use Value: 180° out-of-phase SYNC output allows pairing with second TPS54352PWPG4 to double effective input ripple frequency, easing EMI filter design.

Use Scenario: Delivering precision 1.2-V bias to mixed-signal ASICs in test equipment requiring ultra-low output ripple (<15 mVpp) and zero-load stability.

IC Role / Device Role / Timing Role: Internally compensated buck converter with 0.891-V reference trimmed in production for ±0.5% initial accuracy.

Use Value: 97% PWRGD threshold and 2-ms rising-edge delay (at 500 kHz) provide clean power-good assertion after ripple settles, avoiding false system boot signals.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TPS54352PWP	Same silicon, identical electrical specs, but shipped in standard tape-and-reel (no G4 suffix); RoHS-compliant, non-lead-free finish	No functional difference - used in legacy industrial designs where Pb-free compliance is not mandated	Select TPS54352PWP if lead-free exemption applies; otherwise TPS54352PWPG4 meets current JEDEC J-STD-609A Class 2a requirements
TPS54360BQPWPRQ1	Automotive-grade (AEC-Q100 Grade 1), 4.5–60 V input, 3.5-A max, adjustable output; includes spread-spectrum and enhanced UVLO hysteresis	Supports wider input range and harsher environments (−40°C to 125°C TJ), but requires external feedback resistors and compensation	Choose TPS54360BQPWPRQ1 only for automotive or extended-temp industrial use; TPS54352PWPG4 is optimal for cost-sensitive 12-V fixed-output systems

Compared with TPS54352PWP, TPS54352PWPG4 adds Pb-free plating and updated traceability; compared with TPS54360BQPWPRQ1, it trades automotive qualification and input flexibility for lower BOM cost, fixed 1.2-V output, and zero-compensation design simplicity.

Availability

TPS54352PWPG4 is available at Aetrix Electronics and suitable for industrial point-of-load regulation, FPGA core supplies, and computer peripheral power applications requiring stable component supply, long lifecycle support, and consistent parametric performance across manufacturing lots.

Supply support for TPS54352PWPG4 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 50 years of innovation in high-reliability power conversion solutions.

The TPS5435x family was designed specifically for medium-current, space-constrained point-of-load applications in communications infrastructure, industrial automation, and computing systems requiring high efficiency, small footprint, and simplified design-in.

FAQ

What is the exact output voltage tolerance of the TPS54352PWPG4 over temperature and load?

The TPS54352PWPG4 delivers 1.2 V with ±1% total output voltage tolerance across full operating conditions: TJ = –40°C to 125°C, IO = 100 mA to 3 A, and VIN = 4.5 V to 20 V. This specification is confirmed in the Electrical Characteristics table (page 4 of SLVS519A), where min/max values are 1.176 V and 1.224 V at full load and temperature extremes. The internal 0.891-V reference is laser-trimmed for accuracy, and the fixed-resistor feedback network eliminates external resistor drift errors.

Can the TPS54352PWPG4 operate without an external low-side MOSFET?

Yes, the TPS54352PWPG4 can operate with only an external Schottky diode connected from PH to PGND - the device integrates a pulldown MOSFET for light-load CCM operation. However, using an external low-side MOSFET driven by the LSG pin improves efficiency by 3–5% at full load. The LSG pin must be left unconnected if using a diode-only configuration, and the integrated pulldown MOSFET automatically engages during discontinuous conduction mode.

What is the minimum controllable on-time for the TPS54352PWPG4, and how does it affect maximum switching frequency?

The TPS54352PWPG4 has a minimum controllable on-time of 180 ns (ensured by design). At VIN = 12 V and VO = 1.2 V, the theoretical maximum duty cycle is ~10%, limiting practical switching frequency to ≤550 kHz to maintain stable regulation. Figure 31 in the datasheet confirms the maximum usable frequency decreases with higher input voltage - e.g., at VIN = 20 V, max fSW is ~350 kHz. This constraint must be verified for each design using TI's SWIFT Designer tool.

How is thermal performance affected if the PowerPAD is not soldered to the PCB ground plane?

If the PowerPAD of the TPS54352PWPG4 is not soldered to the PCB ground plane, thermal impedance rises from 42.1°C/W (with solder) to 151.9°C/W (without solder), reducing safe continuous output current from 3 A to ~0.26 A at TA = 85°C. The datasheet explicitly requires soldering the exposed pad to PGND/AGND for proper thermal conduction and electrical grounding. Omitting this step risks thermal shutdown or permanent damage during normal operation.

Does the TPS54352PWPG4 support external synchronization to a system clock, and what are the timing requirements?

Yes, the TPS54352PWPG4 supports external synchronization via the SYNC pin when the RT pin is configured with a resistor to AGND. The external clock must be a falling-edge-triggered signal within 225–770 kHz, and the RT resistor must be set to produce an internal oscillator frequency within ±10% of the external sync frequency. A 10-kΩ pull-down resistor is mandatory on SYNC in all configurations to ensure signal integrity and prevent floating inputs.

TPS54352PWPG4 Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: SWIFT™

Package/Case:: 16-PowerTSSOP (0.173", 4.40mm Width)

Packaging:: Tube

Product Status:: Discontinued at Digi-Key

Function:: Step-Down

Output Configuration:: Positive

Topology:: Buck

Output Type:: Fixed

Number of Outputs:: 1

Voltage - Input (Min):: 4.5V

Voltage - Input (Max):: 20V

Voltage - Output (Min/Fixed):: 1.2V

Voltage - Output (Max):: -

Current - Output:: 3A

Frequency - Switching:: 250kHz, 500kHz

Synchronous Rectifier:: Yes

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 16-HTSSOP

TPS54352PWPG4 FAQ

1.How can I place an order for TPS54352PWPG4 through Aetrix?

Please submit a Request for Quotation (RFQ) for TPS54352PWPG4 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 TPS54352PWPG4 reliable?

The price and inventory of TPS54352PWPG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS54352PWPG4 is usually 5 days.

3.What payment methods are accepted for TPS54352PWPG4?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS54352PWPG4 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TPS54352PWPG4?

TPS54352PWPG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TPS54352PWPG4 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 TPS54352PWPG4?

For technical support, including TPS54352PWPG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS54352PWPG4 requirements.

6.How does Aetrix verify that TPS54352PWPG4 is sourced from the original manufacturer or authorized distributors?

All TPS54352PWPG4 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 TPS54352PWPG4 meets industry standards.

7.What is the process for return or replacement of TPS54352PWPG4?

All TPS54352PWPG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS54352PWPG4, 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 TPS54352PWPG4 part is unused and in its original packaging.

Return procedure for TPS54352PWPG4:

1.Submit a request within 90 days.

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

Tech Hub

2026-09-03 Logic Level Shifter: How to Connect 3.3V and 5V Logic Safely

A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.

2026-09-03 74HC595 vs TPIC6B595: Output Drive, Pinout, Current, and Load Selection

The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…

2026-09-01 74HC595 Pinout, Timing, Output Current, and Applications

The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…

2026-09-01 Latch vs Flip-Flop: Timing, Differences and Design Choices

A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…

2026-08-30 D Latch Circuit: Truth Table, Timing, ICs and Applications

A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …

2026-08-28 SR Latch Explained: NOR and NAND Circuits, Truth Tables, and Applications

An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…

2026-08-27 Latch Circuit: SR and D Latches, Truth Tables, Timing, and Applications

Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…

2026-08-21 What Is an LED Driver? Types, Circuits, Dimming, and Selection

An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…

2026-08-18 Operational Amplifier (Op Amp): Basics, Configurations, Feedback and Applications

Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…

2026-08-14 Jumper Cables: How to Use, Connect and Choose Them Safely

Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…