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Texas Instruments TPS54360DDAR
- Part No.:
- TPS54360DDAR
- Manufacturer:
- Texas Instruments
- Package:
- 8-PowerSOIC (0.154", 3.90mm Width)
- Datasheet:
-
TPS54360DDAR.pdf
- Description:
- IC REG BCK SPLIT RAIL ADJ 8SOPWR
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
TPS54360DDAR from Texas Instruments is a 60-V input, 3.5-A synchronous step-down DC/DC converter with integrated 92-mΩ high-side MOSFET, Eco-mode™ pulse-skipping for light-load efficiency, 146-μA quiescent current, and adjustable 100-kHz to 2.5-MHz switching frequency - used in automotive load-dump-tolerant power supplies, industrial 24-V/48-V systems, and communications equipment.
For engineers reviewing the TPS54360DDAR datasheet, TPS54360DDAR pinout, TPS54360DDAR application, or TPS54360DDAR equivalent, key selection considerations include input voltage range (4.5–60 V), continuous output current capability (3.5 A), thermal performance in HSOIC PowerPAD™, BOOT capacitor recharge behavior at high duty cycles, and EN-controlled UVLO adjustment for system-level brownout protection.
Technical Context
The TPS54360DDAR implements constant-frequency peak current-mode control with internal slope compensation to prevent subharmonic oscillation above 50% duty cycle. Its RT/CLK terminal supports both resistor-programmed frequency (100 kHz–2.5 MHz) and external clock synchronization via PLL lock.
It integrates a bootstrap recharge FET to sustain operation near 100% duty cycle, monitors BOOT–SW voltage for gate-drive integrity, and features cycle-by-cycle overcurrent protection, thermal shutdown (176°C), and overvoltage transient protection that disables the high-side switch until VOUT falls below 106% of regulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 60 V - survives ISO 7637 load dump pulses up to 65 V, enabling direct connection to automotive battery rails without pre-regulation. |
| Output Current | 3.5 A continuous - supports industrial sensors, PLC I/O modules, and telecom line cards requiring stable mid-power conversion. |
| Switching Frequency | 100 kHz to 2.5 MHz - allows trade-off between inductor size (high-freq) and conduction loss (low-freq); RT resistor sets precise value (e.g., 200 kΩ → 500 kHz). |
| Quiescent Current | 146 μA in Eco-mode - extends battery life in always-on vehicle subsystems (e.g., telematics, CAN gateway) during sleep states. |
| Feedback Reference | 0.8 V ±1% - enables accurate output regulation down to 0.8 V; external resistor divider sets VOUT = 0.8 × (1 + R1/R2). |
| Thermal Protection | 176°C junction shutdown with 12°C hysteresis - prevents permanent damage during sustained overload or poor PCB heatsinking. |
| Package | 8-pin HSOIC with PowerPAD™ (4.89 mm × 3.90 mm) - thermally enhanced layout requires exposed pad soldered to GND plane for θJCbot = 3.6°C/W. |
Pinout & Package
TPS54360DDAR uses an 8-terminal HSOIC package with exposed thermal pad (PowerPAD™), requiring PCB-level GND connection for thermal and electrical integrity. Pin 9 (thermal pad) is electrically tied to GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BOOT (Pin 1) | Bootstrap gate-drive supply node | Connects to SW via 0.1-μF ceramic capacitor; internal recharge FET maintains >2.1 V BOOT–SW to sustain high-duty-cycle operation. |
| VIN (Pin 2) | Main input power rail | Accepts 4.5–60 V; internal UVLO defaults to 4.3 V rising threshold; EN pin adjusts start/stop points via resistor divider. |
| EN (Pin 3) | Enable and UVLO control input | Pull low (<1.2 V) to disable; float or pull high to enable; two-resistor network raises UVLO threshold for system-level brown-in/brown-out control. |
| RT/CLK (Pin 4) | Frequency programming/synchronization | Resistor-to-GND sets fSW (100 kHz–2.5 MHz); external clock signal (160–2300 kHz) overrides resistor mode when pulled >2 V. |
| FB (Pin 5) | Inverting error amplifier input | Compares divided output voltage against 0.8-V reference; sets regulated VOUT via external resistor divider (R1/R2). |
| COMP (Pin 6) | Error amplifier output / PWM comparator input | Connects to RC compensation network; voltage controls peak inductor current; clamped at 600 mV to enter Eco-mode. |
| GND (Pin 7) | Analog and power ground reference | Return path for internal circuits; must be connected to PCB GND plane; shares thermal pad (Pin 9) for low-impedance heat transfer. |
| SW (Pin 8) | Switching node | Drain of internal high-side MOSFET; connects to external inductor and BOOT capacitor; carries high di/dt; requires tight layout to minimize EMI. |
Key Features
| Feature | Design Value |
|---|---|
| Eco-mode™ pulse skipping | Reduces no-load input current to 146 μA by disabling switching while maintaining regulation via controlled burst-mode recovery. |
| Integrated BOOT recharge FET | Enables >99% duty cycle operation without external diode; eliminates need for discrete bootstrap diode and reduces BOM count. |
| Adjustable UVLO with hysteresis | EN pin supports programmable start-up (4.1–4.48 V) and stop thresholds with 325-mV hysteresis to prevent chatter during input transients. |
| Current-mode control with slope compensation | Ensures stable operation across full duty cycle range (including >50%), simplifies loop compensation, and improves transient response. |
| Overvoltage transient protection (OVP) | Disables high-side switch if VOUT exceeds 106% of setpoint, preventing damage to downstream logic or analog circuitry during fault conditions. |
| Internal soft-start | 2.1-ms ramp time (at 500 kHz) limits inrush current and output overshoot; automatically resets during overcurrent faults for safe recovery. |
Applications
| Automotive Body Control Module (BCM) | Industrial 24-V Sensor Hub |
|---|---|
Use Scenario: Powers microcontroller, CAN transceiver, and analog front-end in vehicle door module exposed to 65-V load dump pulses. IC Role / Device Role / Timing Role: Primary buck regulator delivering 3.3 V/3.5 A from 12-V battery; handles ISO 7637-2 Pulse 5a without external TVS. Use Value: Eliminates need for pre-regulator stage; 92-mΩ MOSFET and Eco-mode maintain >85% efficiency at 10-mA standby load. |
Use Scenario: Supplies 5 V to multiple temperature/pressure sensors and RS-485 transceivers in factory automation cabinet. IC Role / Device Role / Timing Role: Single-chip 24-V-to-5-V converter with adjustable UVLO to tolerate brownouts during motor startup. Use Value: 100-kHz minimum fSW allows use of low-cost, high-saturation-current inductors; thermal shutdown protects during enclosure overheating. |
| Telecom Remote Radio Unit (RRU) | 48-V PoE+ Midspan Power Supply |
Use Scenario: Generates 12 V for RF power amplifiers in outdoor base station equipment operating from -40°C to +85°C ambient. IC Role / Device Role / Timing Role: High-reliability buck controller with 150°C max junction rating; RT/CLK synchronized to system clock to reduce EMI peaks. Use Value: Frequency foldback prevents inductor saturation during cold-start inrush; BOOT recharge FET sustains regulation during 95% duty cycle at low VOUT. |
Use Scenario: Provides isolated 12-V auxiliary rail for PoE+ controller ICs and status LEDs in enterprise switch midspans. IC Role / Device Role / Timing Role: Secondary non-isolated buck stage stepping 57-V PoE+ input down to 12 V; operates in Eco-mode during link idle periods. Use Value: 2-μA shutdown current enables full-system power gating; 0.8-V reference ensures accuracy across wide temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM5164QPWPRQ1 | 4.5–65-V input, 1-A continuous, 1.5-MHz max fSW, no integrated BOOT diode; requires external bootstrap diode. | Lower current rating; suited for space-constrained automotive infotainment displays, not high-current BCMs. | Choose when board area is critical and 1-A output suffices; avoid if >3-A load or BOOT diode integration is required. |
| MPQ4363GJ-AEC1 | 3.8–60-V input, 3.5-A continuous, 2.2-MHz max fSW, integrated BOOT diode, but only AEC-Q100 Grade 2 (−40°C to +105°C). | Limited junction temperature range vs. TPS54360DDAR's 150°C rating; lacks EN-adjustable UVLO hysteresis. | Acceptable for under-hood automotive applications with lower thermal stress; not recommended for high-ambient industrial enclosures. |
Compared with LM5164QPWPRQ1 and MPQ4363GJ-AEC1, the TPS54360DDAR uniquely combines 3.5-A capability, 150°C operation, EN-programmable UVLO, and integrated BOOT recharge - making it optimal for high-reliability, high-temperature, high-current buck conversion where thermal margin and system-level brownout control are critical.
Availability
TPS54360DDAR is available at Aetrix Electronics and suitable for automotive body control modules, industrial 24-V sensor hubs, and telecom remote radio units requiring stable component supply across extended temperature and voltage ranges.
Supply support for TPS54360DDAR 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 company headquartered in Dallas, Texas, specializing in analog, embedded processing, and power management ICs for industrial, automotive, and communications markets.
The TPS54360DDAR belongs to TI's high-voltage buck converter product line, designed specifically for robust, wide-input industrial and automotive power systems where reliability under load dump, thermal stress, and input transients is mandatory.
FAQ
What is the maximum input voltage the TPS54360DDAR can withstand without damage?
The TPS54360DDAR has an absolute maximum input voltage rating of 65 V, allowing it to survive ISO 7637-2 Load Dump Pulse 5a events common in automotive 12-V systems. Its recommended operating input range is 4.5 V to 60 V. Operation beyond 60 V is not advised for long-term reliability, even though the 65-V rating provides transient margin. The device's internal protection circuits remain active up to this limit.
Does the TPS54360DDAR require an external bootstrap diode?
No, the TPS54360DDAR does not require an external bootstrap diode. It integrates a dedicated BOOT recharge FET that automatically refreshes the BOOT capacitor during low-side conduction phases. This eliminates the need for an external diode, reduces component count, and improves reliability in high-duty-cycle applications such as low-VOUT, high-VIN configurations.
How does Eco-mode™ operate in the TPS54360DDAR, and what is its impact on output ripple?
Eco-mode™ in the TPS54360DDAR activates when load current drops below ~24 mA (dependent on inductor value), causing the device to skip switching cycles while maintaining regulation. COMP is clamped at 600 mV, and bursts resume only when VOUT decays enough to lift COMP above threshold. This increases low-frequency output ripple (typically <10 kHz), but keeps no-load input current at 146 μA - a critical advantage for battery-backed systems.
Can the TPS54360DDAR synchronize to an external clock, and what are the valid frequency and voltage levels?
Yes, the TPS54360DDAR can synchronize to an external clock applied to the RT/CLK pin. When the pin voltage exceeds 2 V (high threshold), the internal oscillator disables and the PLL locks to incoming edges. Valid synchronization frequencies range from 160 kHz to 2.3 MHz. Clock signals must meet TTL-compatible voltage levels (0.5–2 V low, >2 V high) and have ≤15 ns minimum pulse width.
What thermal design guidance applies to the TPS54360DDAR's PowerPAD™ package?
The TPS54360DDAR's exposed thermal pad (Pin 9) must be soldered to a large, multi-layer PCB GND plane to achieve θJCbot = 3.6°C/W. TI recommends ≥4 thermal vias (0.3-mm diameter, filled or plated) connecting the pad directly to inner GND layers. Without proper thermal pad connection, junction temperature rise exceeds specifications - especially at >2 A loads or ambient temperatures above 70°C.
TPS54360DDAR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- Eco-Mode™
- Package/Case:
- 8-PowerSOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Not For New Designs
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck, Split Rail
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 60V
- Voltage - Output (Min/Fixed):
- 0.8V
- Voltage - Output (Max):
- 58.8V
- Current - Output:
- 3.5A
- Frequency - Switching:
- 100kHz ~ 2.5MHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO PowerPad
TPS54360DDAR FAQ
1.How can I place an order for TPS54360DDAR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS54360DDAR 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 TPS54360DDAR reliable?
The price and inventory of TPS54360DDAR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS54360DDAR is usually 5 days.
3.What payment methods are accepted for TPS54360DDAR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS54360DDAR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS54360DDAR?
TPS54360DDAR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS54360DDAR 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 TPS54360DDAR?
For technical support, including TPS54360DDAR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS54360DDAR requirements.
6.How does Aetrix verify that TPS54360DDAR is sourced from the original manufacturer or authorized distributors?
All TPS54360DDAR 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 TPS54360DDAR meets industry standards.
7.What is the process for return or replacement of TPS54360DDAR?
All TPS54360DDAR units undergo pre-shipment inspection (PSI). If there is an issue with TPS54360DDAR, 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 TPS54360DDAR part is unused and in its original packaging.
Return procedure for TPS54360DDAR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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