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

Texas Instruments TPS56300PWPR

Name: TPS56300PWPR
Brand: Texas Instruments
SKU: TPS56300PWPR
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TPS56300PWPR

Manufacturer:: Texas Instruments

Category:: Voltage Regulators - Linear + Switching

Package:: 28-PowerTSSOP (0.173", 4.40mm Width)

Datasheet:: TPS56300PWPR.pdf

Description:: IC REG DL BUCK/LNR SYNC 28HTSSOP

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Product details

Overview

TPS56300PWPR from Texas Instruments is a dual-output synchronous-buck controller IC designed for DSP and microcontroller power delivery, integrating a hysteretic ripple regulator for core voltage (1.3–3.3 V) and an LDO controller for I/O voltage (1.3–3.3 V), with ±1.5% reference tolerance, 90%+ efficiency, and programmable slow-start for simultaneous power-up.

For engineers reviewing the TPS56300PWPR datasheet, TPS56300PWPR pinout, TPS56300PWPR application, or TPS56300PWPR equivalent, this device supports TI C6000-family DSPs, enables lossless current sensing via high-side R_DS(on), provides dual OVP/UVP/PWRGD monitoring, and drives logic-level N-channel MOSFETs across 2.8–5.5 V input range with integrated 2-A peak drivers.

Technical Context

The TPS56300PWPR implements a dual-regulator architecture: a fast-response hysteretic synchronous-buck (ripple regulator) for core supply and a feedback-controlled LDO controller for I/O supply, both sharing a tri-level VID network (VID0/VID1) to set nine preset voltage pairs. It uses adaptive deadtime control and internal synchronous bootstrap rectification for high-side drive.

Its protection system includes independent overvoltage (112–120% V_REF), undervoltage (70–80% V_REF), and overcurrent (118–142 mV trip) detection per output, plus thermal shutdown at 145°C, inhibit control, and coordinated discharge during shutdown. The 28-pin PWP PowerPAD package supports high-current operation with 3.58 W dissipation at T_A < 25°C when mounted.

Key Specifications

Parameter	Value and Actual Design Meaning
Input Voltage Range	2.8 V – 5.5 V - Supports wide-input industrial and DSP supply rails without external regulation.
Reference Tolerance	±1.5% - Ensures tight output voltage accuracy across −40°C to +125°C junction temperature.
Ripple Regulator Type	Hysteretic control with droop compensation - Delivers fast transient response and reduces bulk capacitance requirements.
Peak Driver Current	2 A sink/source (HIGHDR/LOWDR) - Directly drives low-R_DS(on) logic-level N-MOSFETs up to >30 A system current.
OVP/UVP Thresholds	RR/LDO: 112–120% / 70–80% V_REF - Independent, precision thresholds with 10 mV hysteresis per rail for robust fault handling.
Power Good Output	Open-drain, active-high at ≥93% V_REF - Monitors both outputs simultaneously; asserts only when both are in regulation.
Thermal Shutdown	145°C trip with 10°C hysteresis - Protects against sustained overload or poor heatsinking in compact layouts.

Pinout & Package

The TPS56300PWPR is housed in a 28-pin TSSOP (PWP) package with exposed thermal pad (PowerPAD™), optimized for high-power density and thermal performance in space-constrained DSP power designs.

Pin/Terminal	Circuit Role	Design Meaning
VID0, VID1	Voltage identification inputs	Tri-level (GND/floating/VDRV) pins that jointly select one of nine core/I/O voltage pairs (e.g., 1.3 V/1.5 V to 2.5 V/3.3 V).
SLOWST	Slow-start timing node	Capacitor-to-ground sets synchronized ramp time for both outputs, ensuring controlled, matched power-up sequencing.
VSEN−RR, VSEN−LDO	Output voltage sense inputs	Direct feedback nodes for ripple regulator and LDO controller; also used for OVP/UVP/PWRGD monitoring.
HIGHDR, LOWDR	High-side and low-side gate drivers	2-A peak current drivers with adaptive deadtime; HIGHDR uses floating bootstrap (BOOT/BOOTLO), LOWDR referenced to DRVGND.
PWRGD	Power-good status output	Open-drain signal pulled low if either VOUT-RR or VOUT-LDO falls below 93% V_REF; requires external pullup.
IOUT, OCP, DROOP	Current-sense and droop interface	IOUT provides 2×R_DS(on)×I_LOAD signal; OCP/DROOP set trip point and droop slope using resistor dividers to ANAGND.

Key Features

Feature	Design Value
Dual independent regulation	Simultaneous core (hysteretic buck) and I/O (LDO controller) supplies with shared VID programming and slow-start coordination.
Lossless high-side current sensing	Uses R_DS(on) of external high-side FET; IOUT pin delivers precise 2×R_DS(on)×I_LOAD voltage for OCP and droop compensation.
Integrated strong gate drivers	2-A peak source/sink capability per driver (HIGHDR/LOWDR) eliminates need for external driver stages in ≤30 A designs.
Comprehensive protection suite	Per-rail OVP/UVP, cycle-by-cycle OCP, thermal shutdown, inhibit control, and coordinated output discharge on shutdown.
Flexible voltage programming	Tri-level VID network supports nine factory presets; external resistor dividers enable custom core/I/O voltages beyond VID table.

Applications

Telecom Baseband Processing	DSP-Based Industrial Control
Use Scenario: Powering TI C6000-series DSPs in wireless infrastructure baseband units requiring tightly sequenced core (1.2 V) and I/O (3.3 V) rails. IC Role / Device Role / Timing Role: Dual-output controller managing core voltage regulation via hysteretic ripple mode and I/O voltage via external LDO pass FET, with synchronized slow-start. Use Value: Eliminates discrete sequencing ICs; ±1.5% reference tolerance ensures compliance with C6000 V_DD/V_IO specs under thermal stress.	Use Scenario: Supplying real-time motor control DSPs in PLCs where core voltage must track I/O during brownout recovery. IC Role / Device Role / Timing Role: Provides coordinated power-up/down with inhibit-driven standby and fast transient response to load steps from PWM peripherals. Use Value: 250 ns comparator propagation delay and droop compensation maintain <50 mV output deviation during 10 A/µs load transients.
Automotive ADAS Vision Processors	Test & Measurement Signal Generators
Use Scenario: Delivering clean, sequenced power to vision DSPs in camera ECU modules operating across −40°C to +125°C ambient. IC Role / Device Role / Timing Role: Dual-regulator with independent OVP/UVP per rail and thermal shutdown protects against fault propagation in safety-critical systems. Use Value: 145°C thermal trip with 10°C hysteresis prevents latch-up during extended high-load operation in enclosed enclosures.	Use Scenario: Powering high-precision FPGA+DSP signal processing chains in benchtop analyzers requiring ultra-low noise I/O supply. IC Role / Device Role / Timing Role: LDO controller drives low-noise N-channel pass FET while ripple regulator powers FPGA core; BIAS pin supplies quiet analog reference. Use Value: 60 dB PSRR at 1 kHz on LDO path suppresses switching noise coupling into ADC reference domains.

Telecom Baseband Processing

DSP-Based Industrial Control

Use Scenario: Powering TI C6000-series DSPs in wireless infrastructure baseband units requiring tightly sequenced core (1.2 V) and I/O (3.3 V) rails.

IC Role / Device Role / Timing Role: Dual-output controller managing core voltage regulation via hysteretic ripple mode and I/O voltage via external LDO pass FET, with synchronized slow-start.

Use Value: Eliminates discrete sequencing ICs; ±1.5% reference tolerance ensures compliance with C6000 V_DD/V_IO specs under thermal stress.

Use Scenario: Supplying real-time motor control DSPs in PLCs where core voltage must track I/O during brownout recovery.

IC Role / Device Role / Timing Role: Provides coordinated power-up/down with inhibit-driven standby and fast transient response to load steps from PWM peripherals.

Use Value: 250 ns comparator propagation delay and droop compensation maintain <50 mV output deviation during 10 A/µs load transients.

Automotive ADAS Vision Processors

Test & Measurement Signal Generators

Use Scenario: Delivering clean, sequenced power to vision DSPs in camera ECU modules operating across −40°C to +125°C ambient.

IC Role / Device Role / Timing Role: Dual-regulator with independent OVP/UVP per rail and thermal shutdown protects against fault propagation in safety-critical systems.

Use Value: 145°C thermal trip with 10°C hysteresis prevents latch-up during extended high-load operation in enclosed enclosures.

Use Scenario: Powering high-precision FPGA+DSP signal processing chains in benchtop analyzers requiring ultra-low noise I/O supply.

IC Role / Device Role / Timing Role: LDO controller drives low-noise N-channel pass FET while ripple regulator powers FPGA core; BIAS pin supplies quiet analog reference.

Use Value: 60 dB PSRR at 1 kHz on LDO path suppresses switching noise coupling into ADC reference domains.

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-output controller applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TPS56200PWPR	Single-output version (ripple regulator only); no LDO controller, VID0/VID1, or VSEN−LDO pins.	Only suitable for core-only supply; cannot replace TPS56300PWPR in dual-rail DSP systems.	Select only when I/O rail is provided externally or by separate LDO; verify PCB layout excludes unused LDO-related traces.
TPS51200DRCR	DDR termination regulator with VTT/VTTREF outputs; lacks VID programming, dual independent regulation, and LDO controller.	Designed specifically for DDR memory termination, not general-purpose DSP core/I/O power.	Not a functional alternative; use only in DDR subsystems; incompatible pinout and control architecture.

Compared with TPS56300PWPR, TPS56200PWPR omits the LDO controller and VID interface-making it unsuitable for dual-rail DSPs-while TPS51200DRCR serves a narrow DDR-specific function with no overlap in voltage programming, protection, or topology.

Availability

TPS56300PWPR is available at Aetrix Electronics and suitable for telecom baseband processing, automotive ADAS vision processors, and industrial DSP control systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.

Supply support for TPS56300PWPR 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 high-performance power solutions for DSPs and microcontrollers.

The TPS56300PWPR belongs to TI's DSP power controller product line, engineered specifically to meet the stringent voltage accuracy, sequencing, and transient response demands of TI C6000-family digital signal processors.

FAQ

What is the primary function of the TPS56300PWPR in a DSP power system?

The TPS56300PWPR serves as a dual-output power controller IC that independently regulates core voltage using a hysteretic synchronous-buck (ripple regulator) and I/O voltage using an external N-channel LDO pass FET. It ensures synchronized power-up via programmable slow-start, supports TI C6000-family DSPs through tri-level VID voltage selection, and integrates comprehensive protection including per-rail OVP/UVP and lossless current sensing. Its design directly addresses the strict sequencing and accuracy requirements of high-speed DSP applications.

How does the TPS56300PWPR implement voltage sequencing between core and I/O rails?

The TPS56300PWPR enforces simultaneous power-up of both outputs using a shared slow-start circuit: a capacitor connected to the SLOWST pin generates a ramp voltage that controls the enable timing of both the ripple regulator and LDO controller. This ensures the core and I/O voltages track each other during startup, preventing latch-up or undefined states in DSPs like the C6000 family. During shutdown, both outputs are actively discharged toward ground via internal FETs, maintaining safe sequencing integrity.

Can the TPS56300PWPR support custom output voltages outside the nine VID presets?

Yes, the TPS56300PWPR supports custom core and I/O voltages beyond the nine VID-coded pairs (1.3–3.3 V) by using external resistor dividers from VOUT to VSEN−RR or VSEN−LDO and then to ANAGND. The VID network remains disabled in this configuration, and regulation relies on the buffered reference (VREFB) and hysteresis settings. Designers must recalculate hysteresis resistors and verify stability, but the architecture explicitly permits this flexibility per TI SLVS261B documentation.

What protection features does the TPS56300PWPR provide for each output rail?

The TPS56300PWPR provides independent overvoltage protection (OVP: 112–120% V_REF), undervoltage protection (UVP: 70–80% V_REF), and overcurrent protection (OCP: 118–142 mV trip) for both the ripple regulator (core) and LDO (I/O) outputs. Each protection block includes dedicated comparators with deglitching (2.25–11 µs), propagation delay <1 µs, and hysteresis. Additionally, thermal shutdown at 145°C and inhibit-driven low-I_Q mode further enhance system reliability.

Is the TPS56300PWPR compatible with logic-level N-channel MOSFETs across its full input voltage range?

Yes, the TPS56300PWPR is explicitly designed to drive logic-level N-channel MOSFETs across its entire 2.8–5.5 V input range. Its integrated HIGHDR and LOWDR gate drivers deliver 2-A peak sink/source current, and the high-side driver employs a floating bootstrap architecture (via BOOT/BOOTLO) with internal synchronous rectification to maintain sufficient gate drive voltage regardless of input rail. TI confirms compatibility with devices such as the IRFZ24N in application examples.

TPS56300PWPR Specifications

Product attributes: Attribute value

Manufacturer:: Texas Instruments

Series:: -

Package/Case:: 28-PowerTSSOP (0.173", 4.40mm Width)

Packaging:: Tape & Reel (TR)

Product Status:: Not For New Designs

Topology:: Step-Down (Buck) Synchronous (1), Linear (LDO) (1)

Number of Outputs:: 2

Frequency - Switching:: 300kHz

Voltage/Current - Output 1:: Controller

Voltage/Current - Output 2:: Programmable, 2A

Voltage/Current - Output 3:: -

w/LED Driver:: No

w/Supervisor:: No

w/Sequencer:: Yes

Voltage - Supply:: 2.8V ~ 5.5V

Operating Temperature:: -40°C ~ 125°C

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 28-HTSSOP

TPS56300PWPR FAQ

1.How can I place an order for TPS56300PWPR through Aetrix?

Please submit a Request for Quotation (RFQ) for TPS56300PWPR 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 TPS56300PWPR reliable?

The price and inventory of TPS56300PWPR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS56300PWPR is usually 5 days.

3.What payment methods are accepted for TPS56300PWPR?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS56300PWPR transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TPS56300PWPR?

TPS56300PWPR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TPS56300PWPR 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 TPS56300PWPR?

For technical support, including TPS56300PWPR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS56300PWPR requirements.

6.How does Aetrix verify that TPS56300PWPR is sourced from the original manufacturer or authorized distributors?

All TPS56300PWPR 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 TPS56300PWPR meets industry standards.

7.What is the process for return or replacement of TPS56300PWPR?

All TPS56300PWPR units undergo pre-shipment inspection (PSI). If there is an issue with TPS56300PWPR, 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 TPS56300PWPR part is unused and in its original packaging.

Return procedure for TPS56300PWPR:

1.Submit a request within 90 days.

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

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