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Texas Instruments TPS54360BQDDAQ1
- Part No.:
- TPS54360BQDDAQ1
- Manufacturer:
- Texas Instruments
- Package:
- 8-PowerSOIC (0.154", 3.90mm Width)
- Datasheet:
-
TPS54360BQDDAQ1.pdf
- Description:
- IC REG BCK SPLIT RAIL ADJ 8SOPWR
- Quantity:
- Payment:
- Shipping:
Inventory:5,690
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Product details
Overview
TPS54360BQDDAQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive-qualified 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, and adjustable 100 kHz–2.5 MHz switching frequency. It operates from –40°C to 150°C junction temperature and supports load dump survival up to 65 V per ISO 7637 - used in ADAS power rails, USB charging ports, and industrial 12–48 V systems.
For engineers reviewing the TPS54360BQDDAQ1 datasheet, TPS54360BQDDAQ1 pinout, TPS54360BQDDAQ1 application, or TPS54360BQDDAQ1 equivalent, key selection considerations include its 0.8 V ±1% internal reference, BOOT-recharge FET enabling >99% duty cycle operation, RT/CLK synchronization capability, and thermal shutdown at 176°C with 12°C hysteresis.
Technical Context
The TPS54360BQDDAQ1 implements constant-frequency current-mode control with slope compensation to prevent subharmonic oscillation above 50% duty cycle. Its transconductance error amplifier (350 µS normal / 77 µS soft-start) drives the PWM comparator via the COMP pin, while the RT/CLK pin supports both resistor-programmed frequency and external clock synchronization via PLL lock.
It integrates BOOT UVLO monitoring (2.1 V threshold), overvoltage transient protection (OVP trips at 106% VOUT), and frequency foldback during start-up and overload. The device uses a digital soft-start timer (0.42–2.1 ms depending on fSW) and features adjustable UVLO hysteresis via EN-pin resistor divider.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input voltage range | 4.5 V to 60 V - supports automotive battery transients including ISO 7637 load dump up to 65 V. |
| Output current | 3.5 A continuous - determined by thermal limits and 92 mΩ RDS(on) MOSFET under 150°C TJ. |
| Switching frequency | 100 kHz to 2.5 MHz - adjustable via RT resistor or external clock; enables optimization of size vs. efficiency. |
| Quiescent current | 146 µA (no-load operating) / 2 µA (shutdown) - enables always-on automotive subsystems with low standby power. |
| Feedback reference | 0.8 V ±1% - sets output voltage accuracy; enables precise regulation down to 0.8 V with external resistor divider. |
| Thermal shutdown | 176°C with 12°C hysteresis - protects IC and external components during sustained overload or poor heatsinking. |
| UVLO threshold | 4.3 V (rising), 3.975 V (falling) - internally set; adjustable via EN pin resistor network for custom start/stop behavior. |
Pinout & Package
TPS54360BQDDAQ1 is housed in an 8-pin HSOP (DDA) package with exposed thermal pad (4.89 mm × 3.90 mm), requiring PCB connection of the PowerPAD™ to GND for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BOOT | Bootstrap supply node | Connects to SW via 0.1 µF ceramic capacitor; supplies gate drive for high-side MOSFET; monitored for UVLO. |
| VIN | Main input supply | Accepts 4.5–60 V; includes internal 4.3 V UVLO and withstands 65 V transients per ISO 7637. |
| EN | Enable control input | Pull below 1.2 V to disable; float or pull above to enable; supports adjustable UVLO with resistor divider. |
| RT/CLK | Frequency programming/sync input | Resistor-to-GND sets fSW (100 kHz–2.5 MHz); pulled above 1.55 V to enter external clock sync mode. |
| FB | Feedback input | Inverting input of error amplifier; compares output voltage (via resistor divider) to 0.8 V reference. |
| COMP | Error amplifier output | Drives PWM comparator; connects to external compensation network (R-C-C) for loop stability. |
| GND | Power and signal ground | Reference for all internal circuits; must be connected to thermal pad for proper thermal performance. |
| SW | Switching node | Source of internal high-side MOSFET; connects to external inductor and bootstrap capacitor. |
Key Features
| Feature | Design Value |
|---|---|
| Eco-mode™ pulse skipping | Reduces no-load quiescent current to 146 µA by disabling switching when load current falls below threshold. |
| Integrated BOOT recharge FET | Enables >99% duty cycle operation without external diode; eliminates need for discrete BOOT diode. |
| Adjustable UVLO with hysteresis | EN pin supports custom start/stop thresholds using two resistors; hysteresis current (3.4 µA) ensures clean transition. |
| Overvoltage transient protection (OVP) | Shuts off high-side MOSFET if VOUT exceeds 106% of regulated value; prevents damage during line transients. |
| Digital soft-start | Programmable 0.42–2.1 ms ramp time (inverse to fSW); reduces inrush current and output overshoot at startup. |
Applications
| Automotive ADAS Power Supply | USB Dedicated Charging Port (DCP) |
|---|---|
Use Scenario: Powers camera modules, radar sensors, and display controllers in vehicles requiring robust 5 V or 3.3 V rails. IC Role / Device Role / Timing Role: Primary buck regulator delivering stable 3.5 A output with load dump immunity and AEC-Q100 Grade 1 qualification. Use Value: Survives 65 V ISO 7637 pulses; maintains regulation during cold-crank (4.5 V VIN); enables compact layout with integrated MOSFET and BOOT FET. |
Use Scenario: Implements BC1.2-compliant USB charging port in infotainment head units or rear-seat entertainment systems. IC Role / Device Role / Timing Role: Adjustable-output buck converter generating 5 V at up to 3.5 A with tight voltage tolerance and low ripple. Use Value: 0.8 V ±1% reference ensures accurate 5 V output; Eco-mode extends standby battery life; RT/CLK sync avoids EMI interference with USB signaling. |
| Industrial Motor Control Auxiliary Rail | 48 V Telecom/Industrial System Bias Supply |
Use Scenario: Generates isolated or non-isolated 12 V or 15 V bias for gate drivers, op-amps, and microcontrollers in motor drives. IC Role / Device Role / Timing Role: High-input-voltage buck converter supporting wide VIN range (12–48 V) with high efficiency across load conditions. Use Value: 60 V max input accommodates 48 V nominal systems with surge margin; 92 mΩ RDS(on) minimizes conduction loss at full load. |
Use Scenario: Provides 3.3 V or 5 V auxiliary power in 48 V telecom rectifiers, PLC backplanes, or PoE-powered equipment. IC Role / Device Role / Timing Role: Primary step-down regulator converting 48 V bus to logic-level voltages with high PSRR and low noise. Use Value: 100 kHz–2.5 MHz fSW allows EMI filtering optimization; thermal shutdown (176°C) ensures reliability in enclosed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM5164QDDAQ1 | 42 V max input, 0.6 A output, 400 kHz–2.2 MHz fSW, no integrated BOOT FET | Better suited for lower-power, space-constrained automotive modules where 60 V rating is unnecessary | Select when input voltage stays ≤42 V and output current ≤0.6 A; requires external BOOT diode |
| TPS54560BQDDAQ1 | Same package and pinout; 5 A output, higher RDS(on) (65 mΩ), identical Eco-mode and UVLO architecture | Direct upgrade path for designs needing >3.5 A output with minimal layout change | Choose for higher current demand; shares same footprint, compensation, and feature set - only differs in MOSFET sizing |
Compared with LM5164QDDAQ1, TPS54360BQDDAQ1 delivers 3.5× more output current and supports 60 V inputs critical for load dump resilience; versus TPS54560BQDDAQ1, it trades 1.5 A current capacity for lower conduction loss and thermal margin in 3.5 A applications.
Availability
TPS54360BQDDAQ1 is available at Aetrix Electronics and suitable for automotive ADAS, USB charging ports, and industrial motor control applications requiring stable component supply, AEC-Q100 compliance, and long-term lifecycle support.
Supply support for TPS54360BQDDAQ1 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, designing analog and embedded processing solutions for automotive, industrial, and communications markets.
The TPS54360B-Q1 belongs to TI's automotive-grade DC-DC buck converter product line, engineered specifically for harsh-environment vehicle subsystems requiring high input voltage tolerance, functional safety readiness, and extended temperature operation.
FAQ
What is the maximum input voltage rating for TPS54360BQDDAQ1, and does it survive automotive load dump?
TPS54360BQDDAQ1 has an absolute maximum input voltage rating of 65 V and is explicitly designed to survive ISO 7637-2 load dump pulses up to that level. Its recommended operating input range is 4.5 V to 60 V, with internal circuitry protecting against transient overvoltage events. This makes TPS54360BQDDAQ1 suitable for direct connection to automotive battery rails without additional front-end clamping in most cases.
How does the Eco-mode™ function in TPS54360BQDDAQ1, and what is its impact on light-load efficiency?
TPS54360BQDDAQ1 enters Eco-mode™ when output current drops below a threshold corresponding to ~600 mV COMP voltage, causing it to skip switching cycles while maintaining regulation. This reduces switching and gate drive losses, lowering no-load quiescent current to 146 µA. As a result, TPS54360BQDDAQ1 achieves >85% efficiency at 10 mA load with 12 V input and 5 V output - critical for always-on automotive modules.
Can TPS54360BQDDAQ1 operate in 100% duty cycle, and how is low-dropout behavior achieved?
Yes, TPS54360BQDDAQ1 supports near-100% duty cycle operation via its integrated BOOT recharge FET, which actively pulls SW low to refresh the BOOT capacitor when BOOT-SW voltage falls below 2.1 V. This eliminates the need for an external BOOT diode and enables regulation with VOUT approaching VIN − (IOUT × RDS(on)). For example, with 12 V input and 9 V output, TPS54360BQDDAQ1 sustains regulation even as input drops to ~9.4 V.
What are the key differences between TPS54360BQDDAQ1 and TPS54560BQDDAQ1?
TPS54360BQDDAQ1 and TPS54560BQDDAQ1 share identical pinout, package (HSOP-8 DDA), control architecture, and feature set (Eco-mode, RT/CLK sync, BOOT FET), but differ in output current rating and MOSFET RDS(on): TPS54360BQDDAQ1 delivers 3.5 A with 92 mΩ, while TPS54560BQDDAQ1 delivers 5 A with 65 mΩ. Thermal design and inductor selection must scale accordingly - TPS54360BQDDAQ1 offers better thermal margin at 3.5 A.
Is external compensation required for TPS54360BQDDAQ1, and where is it connected?
Yes, external frequency compensation is required for stable operation and is connected between the COMP and GND pins. A standard Type II network - typically a series RC (e.g., 10 kΩ + 1 nF) in parallel with a capacitor (e.g., 10 nF) - is used to set crossover frequency and phase margin. The TPS54360BQDDAQ1's transconductance error amplifier (350 µS) and current-mode control simplify compensation versus voltage-mode controllers, but component values must be selected per specific output voltage, inductance, and load conditions.
TPS54360BQDDAQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- Eco-Mode™
- Package/Case:
- 8-PowerSOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- 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:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO PowerPad
TPS54360BQDDAQ1 FAQ
1.How can I place an order for TPS54360BQDDAQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS54360BQDDAQ1 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 TPS54360BQDDAQ1 reliable?
The price and inventory of TPS54360BQDDAQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS54360BQDDAQ1 is usually 5 days.
3.What payment methods are accepted for TPS54360BQDDAQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS54360BQDDAQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS54360BQDDAQ1?
TPS54360BQDDAQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS54360BQDDAQ1 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 TPS54360BQDDAQ1?
For technical support, including TPS54360BQDDAQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS54360BQDDAQ1 requirements.
6.How does Aetrix verify that TPS54360BQDDAQ1 is sourced from the original manufacturer or authorized distributors?
All TPS54360BQDDAQ1 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 TPS54360BQDDAQ1 meets industry standards.
7.What is the process for return or replacement of TPS54360BQDDAQ1?
All TPS54360BQDDAQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS54360BQDDAQ1, 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 TPS54360BQDDAQ1 part is unused and in its original packaging.
Return procedure for TPS54360BQDDAQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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