My Inquiry
My Account
Texas Instruments TPS54386TPWPRQ1
- Part No.:
- TPS54386TPWPRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 14-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPS54386TPWPRQ1.pdf
- Description:
- IC REG BUCK ADJ 3A DL 14HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,975
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS54386TPWPRQ1 from Texas Instruments is an AEC-Q100 Grade 2 automotive-qualified dual non-synchronous buck converter with integrated 85-mΩ high-side MOSFETs, 600-kHz fixed switching frequency, 4.5-V to 28-V input range, and independent 3-A output capability per channel. It delivers regulated DC power for DSP, infotainment, and ADAS subsystems requiring ratiometric or sequential startup.
For engineers reviewing the TPS54386TPWPRQ1 datasheet, TPS54386TPWPRQ1 pinout, TPS54386TPWPRQ1 application, or TPS54386TPWPRQ1 equivalent, key selection criteria include dual-channel current-mode control, 180° out-of-phase PWM operation, three-level ILIM2 programmable overcurrent protection, and HTSSOP-14 PowerPAD™ thermal management for automotive under-hood environments.
Technical Context
The TPS54386TPWPRQ1 implements current-mode control with internal slope compensation and fully integrated loop compensation, eliminating external compensation components. Each channel features a dedicated transconductance error amplifier (30 μS), 0.8-V ±1.5% reference, and pulse-by-pulse overcurrent protection with hiccup recovery.
Startup sequencing is controlled via the SEQ pin, enabling ratiometric, sequential (CH1→CH2 or CH2→CH1), or independent enable modes. Channel 1 uses fixed 4.5-A current limit; Channel 2 supports three selectable thresholds (1.5 A, 3.0 A, or 4.5 A) via ILIM2 pin configuration-GND, floating, or BP connection-allowing asymmetric load optimization.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 28 V - supports wide automotive battery transients including cold-crank (4.5 V) and load-dump (28 V). |
| Output Current (per channel) | Up to 3 A continuous - enables single-chip dual-rail power for processors and sensors without external current boosting. |
| Switching Frequency | 600 kHz (±15%) - balances EMI performance and inductor size; fixed frequency simplifies filter design. |
| Feedback Reference Voltage | 0.8 V ±1.5% - sets output voltage via resistor divider; tight tolerance ensures accurate regulation across temperature. |
| Thermal Shutdown Threshold | 148°C with 20°C hysteresis - protects against sustained overload or poor PCB heatsinking in enclosed automotive modules. |
| Overcurrent Protection (CH1) | 4.5 A typical - hard current limit prevents MOSFET failure during short-circuit events on Output 1. |
| Soft-Start Time | 2.1 ms typical - controls inrush current during power-up; prevents input rail collapse in multi-rail systems. |
Pinout & Package
TPS54386TPWPRQ1 is housed in a 14-pin HTSSOP (PWP) package with exposed thermal pad, optimized for automotive thermal reliability. The PowerPAD™ bottom-side thermal pad must be soldered to a PCB ground plane for effective junction-to-board heat transfer (θJ-PAD = 2.07°C/W at 25°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PVDD1 | Power input for CH1 high-side MOSFET | Supplies gate drive energy for Output 1; requires local 10-μF ceramic bypass to GND. |
| BOOT1 | Bootstrap supply for CH1 high-side driver | Connects to SW1 via 22–82-nF capacitor; enables N-channel MOSFET high-side switching. |
| SW1 | Switching node for CH1 | Drives external inductor; snubber recommended to suppress ringing during fast transitions. |
| GND | Signal and power ground reference | Must connect directly to thermal pad; forms return path for all internal circuits and switching currents. |
| SEQ | Startup sequencing mode selector | Configures ratiometric (floating), CH2→CH1 (BP), or CH1→CH2 (GND) power-up sequence. |
| ILIM2 | Channel 2 overcurrent threshold adjust | Three discrete levels: GND = 1.5 A, floating = 3.0 A, BP = 4.5 A - scales protection to actual load needs. |
| FB1 / FB2 | Voltage feedback inputs | Monitor output voltage via resistor dividers; regulate to internal 0.8-V reference with ±1.5% accuracy. |
| EN1 / EN2 | Active-low enable controls | Enable independent soft-start per channel; internal 6-μA pullup allows direct GND tie for always-on operation. |
Key Features
| Feature | Design Value |
|---|---|
| Dual 180° out-of-phase PWM outputs | Reduces input ripple current by ~70% vs. in-phase operation, easing bulk capacitor sizing and EMI filtering. |
| Internal compensation network | Eliminates need for external compensation components - reduces BOM count and layout sensitivity. |
| Three-level programmable OCP (CH2) | Enables precise current limiting for mismatched loads (e.g., 5-V/3-A + 3.3-V/1.5-A), avoiding oversized magnetics. |
| 2.1-ms internal soft start | Prevents inrush-induced voltage droop on shared input rails; compatible with sequenced system power-up. |
| AEC-Q100 Grade 2 qualification | Validated for –40°C to +105°C ambient operation - meets automotive cabin and engine-bay thermal requirements. |
Applications
| Infotainment Power Supply | ADAS Camera Module |
|---|---|
|
Use Scenario: Dual-rail power for SoC (1.1 V core, 3.3 V I/O) and display interface in automotive head units. IC Role / Device Role / Timing Role: Primary dual-output DC/DC regulator providing synchronized, low-noise 1.1-V and 3.3-V rails with ratiometric startup. Use Value: Eliminates need for two discrete converters; 180° phase shift cuts input capacitance requirement by >50%. |
Use Scenario: Compact power solution for rear-view and surround-view camera ECUs operating in high-temperature zones. IC Role / Device Role / Timing Role: Automotive-grade buck converter delivering 5-V and 3.3-V outputs with sequential startup (5-V first, then 3.3-V). Use Value: SEQ pin configures CH1→CH2 sequencing to meet sensor initialization timing; thermal shutdown protects against enclosure overheating. |
| Telematics Control Unit | Body Control Module |
|
Use Scenario: Powering LTE modem (3.8 V), MCU (1.2 V), and CAN transceiver (5 V) in telematics gateway. IC Role / Device Role / Timing Role: Dual-channel regulator with independent EN1/EN2 enables selective power-up of subsystems during wake-up events. Use Value: Independent enable pins allow low-power sleep mode (only one rail active); shutdown current <150 μA extends battery life. |
Use Scenario: Centralized power for door module microcontrollers, LIN transceivers, and LED drivers in harsh under-dash environment. IC Role / Device Role / Timing Role: Robust dual buck converter handling 4.5–28-V input transients while maintaining stable 5-V and 3.3-V outputs. Use Value: 85-mΩ MOSFETs and thermal pad ensure >1.6 W power dissipation at 105°C ambient - sustains operation without derating. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM5143AQDPRRQ1 | 42-V input, synchronous dual buck with 2.2-MHz switching; no ILIM2 programmability; higher quiescent current (15 μA vs. 3 mA). | Targets higher-voltage industrial or commercial systems; lacks automotive Grade 2 temp rating. | Choose for >28-V input or where synchronous efficiency >90% is critical; not drop-in due to different pinout and control architecture. |
| TPS54560QDDARQ1 | Single-channel, 60-V input, 5-A output; no dual-rail or sequencing capability; includes spread-spectrum EMI reduction. | Suitable only when dual outputs are unnecessary; requires two ICs to replicate TPS54386TPWPRQ1 functionality. | Choose for ultra-wide input (6–60 V) or EMI-sensitive designs; adds complexity and cost for dual-rail use cases. |
Compared with LM5143AQDPRRQ1 and TPS54560QDDARQ1, the TPS54386TPWPRQ1 uniquely combines AEC-Q100 Grade 2 qualification, dual-channel 3-A capability, 180° phase shift, and pin-selectable OCP in a single HTSSOP-14 package - making it optimal for space-constrained automotive dual-rail systems requiring thermal robustness and startup flexibility.
Availability
TPS54386TPWPRQ1 is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, and telematics control units requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TPS54386TPWPRQ1 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 automotive-grade power management ICs, with decades of automotive qualification expertise and broad manufacturing scale.
The TPS54386-Q1 product line delivers highly integrated dual-output DC/DC converters designed specifically for automotive subsystems requiring AEC-Q100 compliance, thermal resilience, and flexible power sequencing in compact form factors.
FAQ
What is the maximum input voltage rating for the TPS54386TPWPRQ1?
The TPS54386TPWPRQ1 has an absolute maximum PVDD1/PVDD2 rating of 30 V, but its recommended operating input voltage range is 4.5 V to 28 V. This 28-V upper limit accommodates automotive load-dump transients while ensuring reliable operation within the device's validated electrical characteristics and thermal limits.
How does the SEQ pin configure startup sequencing in the TPS54386TPWPRQ1?
The SEQ pin on the TPS54386TPWPRQ1 selects between three startup modes: tied to GND for CH1→CH2 sequential, tied to BP for CH2→CH1 sequential, or left floating for ratiometric (simultaneous) startup. Each mode is detected at power-on and determines the relative timing of soft-start initiation between the two outputs.
Can the TPS54386TPWPRQ1 operate with different input voltages on PVDD1 and PVDD2?
Yes, the TPS54386TPWPRQ1 supports dual-supply operation: PVDD1 powers only the CH1 high-side MOSFET, while PVDD2 supplies the control circuitry, EN1/EN2 pullups, and CH2 high-side MOSFET. PVDD1 may be higher or lower than PVDD2, enabling flexible power domain partitioning in multi-rail systems.
What is the purpose of the ILIM2 pin on the TPS54386TPWPRQ1?
The ILIM2 pin on the TPS54386TPWPRQ1 sets the overcurrent protection threshold for Channel 2: grounded = 1.5 A, floating = 3.0 A, connected to BP = 4.5 A. This allows designers to scale protection to actual load requirements-reducing stress on external components when full 3-A capability is not needed on both channels.
Does the TPS54386TPWPRQ1 require external compensation components?
No, the TPS54386TPWPRQ1 includes fully internal compensation for both control loops. Its current-mode architecture with built-in slope compensation and transconductance error amplifiers eliminates the need for external RC networks-simplifying design, reducing BOM count, and improving layout robustness.
TPS54386TPWPRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- 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:
- 2
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 28V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 25.2V
- Current - Output:
- 3A
- Frequency - Switching:
- 630kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-HTSSOP
TPS54386TPWPRQ1 FAQ
1.How can I place an order for TPS54386TPWPRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS54386TPWPRQ1 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 TPS54386TPWPRQ1 reliable?
The price and inventory of TPS54386TPWPRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS54386TPWPRQ1 is usually 5 days.
3.What payment methods are accepted for TPS54386TPWPRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS54386TPWPRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS54386TPWPRQ1?
TPS54386TPWPRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS54386TPWPRQ1 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 TPS54386TPWPRQ1?
For technical support, including TPS54386TPWPRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS54386TPWPRQ1 requirements.
6.How does Aetrix verify that TPS54386TPWPRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS54386TPWPRQ1 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 TPS54386TPWPRQ1 meets industry standards.
7.What is the process for return or replacement of TPS54386TPWPRQ1?
All TPS54386TPWPRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS54386TPWPRQ1, 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 TPS54386TPWPRQ1 part is unused and in its original packaging.
Return procedure for TPS54386TPWPRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS54386TPWPRQ1 Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
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…
