My Inquiry
My Account
Texas Instruments TPS54680MPWPREP
- Part No.:
- TPS54680MPWPREP
- Manufacturer:
- Texas Instruments
- Category:
- Special Purpose Regulators
- Package:
- 28-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPS54680MPWPREP.pdf
- Description:
- IC REG CONV PWR 1OUT 28HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,157
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS54680MPWPREP from Texas Instruments is a radiation-hardened, high-efficiency synchronous buck PWM converter with integrated 30-mΩ high-side and low-side MOSFETs, delivering up to 6-A continuous output current from a 3-V to 6-V input. It supports power-up/down tracking via the TRACKIN pin for precise sequencing in multi-rail systems and operates across –55°C to 125°C for defense, aerospace, and medical applications.
For engineers reviewing the TPS54680MPWPREP datasheet, TPS54680MPWPREP pinout, TPS54680MPWPREP application, or TPS54680MPWPREP equivalent, this page delivers verified electrical specs, thermal metrics, tracking behavior, enable logic thresholds, and PowerPAD™ layout guidance essential for high-density point-of-load designs powering FPGAs, DSPs, and ASICs.
Technical Context
The TPS54680MPWPREP implements a voltage-mode PWM control architecture with an internal error amplifier (90–110 dB open-loop gain, 3–5 MHz unity-gain bandwidth) and adaptive dead-time control (25 ns). Its TRACKIN pin enables analog-based power sequencing by synchronizing output ramp rates with external regulators or reference sources.
It integrates dual 30-mΩ MOSFETs rated for 12-A peak current, features programmable switching frequency (280–700 kHz via RT resistor), and includes under-voltage lockout (2.95 V start / 2.80 V stop), thermal shutdown (135–165°C trip), and overcurrent protection with 100-ns leading-edge blanking.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.0 V to 6.0 V - supports standard 3.3-V and 5-V intermediate bus rails without external regulation. |
| Continuous Output Current | 6 A - sustained delivery with thermal management via PowerPAD™ and recommended 3″×3″ 1-oz copper plane. |
| Switching Frequency | Fixed 350 kHz or adjustable 280–700 kHz - enables EMI optimization and inductor size reduction. |
| Integrated MOSFET rDS(on) | 30 mΩ (high-side & low-side) - minimizes conduction loss and eliminates external gate drivers. |
| Operating Temperature | –55°C to +125°C junction - qualified for extended-life military/aerospace applications per V62/04641-02XE spec. |
| Power Good Threshold | 90% of Vref (0.891 V nominal) - provides accurate, hysteresis-stabilized reset signaling for processors. |
| Enable Threshold | 0.82 V (disable) to 1.40 V (enable) - TTL-compatible digital control with 0.03-V hysteresis for noise immunity. |
Pinout & Package
The TPS54680MPWPREP is housed in a thermally enhanced 28-pin HTSSOP (PWP) package with exposed PowerPAD™ on the underside for direct thermal coupling to PCB ground planes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AGND (Pin 1) | Analog Ground Reference | Return path for compensation network, slow-start capacitor, VBIAS bypass, and RT resistor - must tie to PowerPAD™ at single point. |
| VSENSE (Pin 2) | Error Amplifier Inverting Input | Connects to output voltage divider - sets regulation point and enables feedback loop stability design. |
| COMP (Pin 3) | Error Amplifier Output | Drives external Type II/III compensation network between COMP and VSENSE for loop control. |
| PWRGD (Pin 4) | Open-Drain Power-Good Flag | Sinks current when VSENSE ≥ 90% Vref - used for processor reset, system sequencing, or fault monitoring. |
| BOOT (Pin 5) | Bootstrap Capacitor Node | Connects 0.022–0.1-μF ceramic capacitor to PH - generates floating gate drive for high-side MOSFET. |
| PH (Pins 6–14) | Phase Node / Switch Node | Junction of internal high-side and low-side FETs - connects directly to output inductor and requires tight layout. |
| RT (Pin 28) | Frequency Setting Input | Resistor from RT to AGND selects switching frequency: 180 kΩ = 280 kHz, 100 kΩ = 500 kHz, 68 kΩ = 700 kHz. |
| ENA (Pin 27) | Enable Control Input | Logic-level input enabling/disabling all internal circuitry - low quiescent current (<1.4 µA) in shutdown mode. |
| TRACKIN (Pin 26) | Tracking Reference Input | Accepts external voltage ramp to synchronize startup/shutdown timing with other rails - ±2.5 mV offset tolerance. |
| VBIAS (Pin 25) | Internal Bias Regulator Output | Supplies stable ~2.8 V to internal circuits - requires 0.1–1.0 µF X5R/X7R ceramic bypass to AGND. |
| VIN (Pins 20–24) | Main Input Supply | 3–6 V input for power switches and bias regulator - each pin must be bypassed with 10-µF ceramic near PGND. |
| PGND (Pins 15–19) | Power Ground Return | High-current return for low-side FET and input/output capacitors - connect to large copper area and tie to AGND at PowerPAD™. |
Key Features
| Feature | Design Value |
|---|---|
| Power-Up/Down Tracking | Enables precise sequencing of multiple rails using analog voltage ramp on TRACKIN - critical for FPGA core/I/O supply coordination. |
| Integrated 30-mΩ MOSFETs | Eliminates external power switches and gate drivers - reduces BOM count and board area while maintaining >90% efficiency at 6 A. |
| Adjustable Switching Frequency | 280–700 kHz range via single RT resistor - allows optimization for efficiency (lower fSW) or size (higher fSW) without changing topology. |
| Thermal Protection | Programmable thermal shutdown (135–165°C) with 10°C hysteresis - prevents damage during overload or poor airflow conditions. |
| Robust Enable Logic | 0.82 V disable / 1.40 V enable threshold with deglitch filtering - ensures reliable operation in noisy industrial or avionics environments. |
Applications
| FPGA Core Supply | DSP I/O Rail Sequencing |
|---|---|
|
Use Scenario: Powering 0.9-V to 1.2-V FPGA core logic requiring strict voltage accuracy and fast transient response. IC Role / Device Role / Timing Role: Primary point-of-load regulator with TRACKIN-synchronized startup to avoid core latch-up before I/O rail stabilization. Use Value: Delivers 6-A continuous current with <±0.3% load regulation and 0.03%/A line regulation - meets Xilinx/Intel core rail tolerances. |
Use Scenario: Generating 1.8-V or 2.5-V I/O supply for high-speed SerDes interfaces with controlled ramp rate. IC Role / Device Role / Timing Role: Secondary regulated rail synchronized to core supply via TRACKIN pin for safe power-down sequencing. Use Value: Tracks external reference within ±2.5 mV offset - ensures I/O voltage remains within 100 mV of core rail during transitions. |
| ASIC Power Management | Avionics Distributed Power |
|
Use Scenario: Providing clean, sequenced power to mixed-signal ASICs in radar or comms subsystems. IC Role / Device Role / Timing Role: High-density buck converter with integrated FETs and PowerPAD™ thermal interface for compact module integration. Use Value: Achieves >88% efficiency at 5-V input/1.2-V output/6-A load - reduces heat dissipation in sealed enclosures. |
Use Scenario: Deploying in flight control computers where component reliability and temperature range are mission-critical. IC Role / Device Role / Timing Role: Radiation-tolerant, extended-temperature DC/DC regulator qualified per MIL-PRF-38535 Class V and V62/04641-02XE. Use Value: Rated for –55°C to +125°C operation with controlled baseline and full traceability - satisfies DO-254/DO-160 requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS54680QPWPREP | Same silicon, commercial-grade (-40°C to +125°C) vs. TPS54680MPWPREP's extended temp (-55°C to +125°C) and enhanced product lifecycle controls. | Approved for industrial but not defense/aerospace use; lacks extended product-change notification and traceability. | Select TPS54680QPWPREP only for non-critical commercial systems where cost sensitivity outweighs environmental ruggedness. |
| LMZ31506RVQR | Module-based solution (integrated inductor); fixed 500-kHz fSW; 6-A max; smaller footprint but higher cost and lower efficiency at light loads. | Reduces design time but limits layout flexibility and thermal customization - unsuitable for conduction-cooled chassis. | Choose LMZ31506RVQR when rapid prototyping or space-constrained layouts outweigh thermal performance and sequencing precision needs. |
Compared with TPS54680QPWPREP, the TPS54680MPWPREP offers guaranteed operation down to –55°C and full military-grade traceability, while LMZ31506RVQR trades discrete design control for faster time-to-market at the expense of thermal headroom and tracking fidelity.
Availability
TPS54680MPWPREP is available at Aetrix Electronics and suitable for defense electronics, aerospace avionics, and medical imaging systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TPS54680MPWPREP 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 aerospace and defense qualification experience.
The TPS54680MPWPREP belongs to TI's SWIFT™ family of high-current synchronous buck converters, engineered specifically for high-reliability, multi-rail sequencing applications in harsh-environment electronics.
FAQ
What is the maximum continuous output current supported by the TPS54680MPWPREP?
The TPS54680MPWPREP delivers up to 6 A of continuous output current under recommended thermal conditions - including proper PowerPAD™ soldering, ≥3″×3″ 1-oz copper plane, and ambient temperatures ≤85°C. Peak current capability reaches 12 A, but sustained operation above 6 A requires derating based on junction temperature limits and airflow.
How does the TRACKIN pin function in the TPS54680MPWPREP?
The TRACKIN pin on the TPS54680MPWPREP accepts an external voltage ramp to synchronize startup and shutdown timing with other power rails. When TRACKIN rises slower than the internal 25 V/ms slope, the output follows it closely; when faster or present at enable, the internal slope dominates. This enables precise sequencing for FPGA core/I/O or ASIC analog/digital supplies.
What is the purpose of the PowerPAD™ in the TPS54680MPWPREP package?
The PowerPAD™ on the TPS54680MPWPREP is an exposed thermal pad on the underside of the PWP package that must be soldered to a large PCB copper area. It provides the primary thermal path from die to board, achieving θJCbot = 1.3°C/W and enabling 6-A operation without external heatsinks - critical for high-density, conduction-cooled systems.
Can the TPS54680MPWPREP operate with a 3.3-V input and 1.2-V output?
Yes, the TPS54680MPWPREP supports 3.3-V input and 1.2-V output configurations. With its 3-V to 6-V input range and adjustable output (0.9 V to 3.3 V via feedback divider), it achieves >89% efficiency at 6-A load under these conditions. Layout must observe strict PGND/AGND separation and BOOT capacitor placement to maintain stability.
What are the key differences between TPS54680MPWPREP and TPS54680QPWPREP?
The TPS54680MPWPREP is the enhanced-product (EP) version with extended temperature range (–55°C to +125°C), controlled baseline, full traceability, and extended product lifecycle support - qualified for defense and aerospace. The TPS54680QPWPREP is the commercial version rated only from –40°C to +125°C, lacking EP-specific quality and documentation rigor.
TPS54680MPWPREP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- SWIFT™
- Package/Case:
- 28-PowerTSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Converter, Distributed Power Systems
- Voltage - Input:
- 3V ~ 6V
- Number of Outputs:
- 1
- Voltage - Output:
- 0.9V ~ 3.3V
- Operating Temperature:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-HTSSOP
TPS54680MPWPREP FAQ
1.How can I place an order for TPS54680MPWPREP through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS54680MPWPREP 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 TPS54680MPWPREP reliable?
The price and inventory of TPS54680MPWPREP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS54680MPWPREP is usually 5 days.
3.What payment methods are accepted for TPS54680MPWPREP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS54680MPWPREP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS54680MPWPREP?
TPS54680MPWPREP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS54680MPWPREP 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 TPS54680MPWPREP?
For technical support, including TPS54680MPWPREP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS54680MPWPREP requirements.
6.How does Aetrix verify that TPS54680MPWPREP is sourced from the original manufacturer or authorized distributors?
All TPS54680MPWPREP 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 TPS54680MPWPREP meets industry standards.
7.What is the process for return or replacement of TPS54680MPWPREP?
All TPS54680MPWPREP units undergo pre-shipment inspection (PSI). If there is an issue with TPS54680MPWPREP, 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 TPS54680MPWPREP part is unused and in its original packaging.
Return procedure for TPS54680MPWPREP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS54680MPWPREP Tags
-
TPS51206DSQR
Texas Instruments
-
TPS51200DRCR
Texas Instruments
-
TPS51200DRCT
Texas Instruments
-
TPS62740DSSR
Texas Instruments
-
TPS51100DGQR
Texas Instruments
-
NCP51200MNTXG
onsemi
-
NCP51400MNTXG
onsemi
-
RT9026GSP
Richtek USA Inc.
-
LP2998MRX/NOPB
Texas Instruments
-
TPS51200QDRCRQ1
Texas Instruments
-
DPA423GN-TL
Power Integrations
-
LM10011SD/NOPB
Texas Instruments
Tech Hub
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.
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…
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…
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…
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 …
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…
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…
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…
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…
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…
