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Texas Instruments TPS560430XDBVT
- Part No.:
- TPS560430XDBVT
- Manufacturer:
- Texas Instruments
- Package:
- SOT-23-6
- Datasheet:
-
TPS560430XDBVT.pdf
- Description:
- IC REG BUCK PFM 600MA SOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,630
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Product details
Overview
TPS560430XDBVT from Texas Instruments is a synchronous step-down DC-DC converter delivering up to 600 mA output current, operating from 4 V to 36 V input, with 1.1-MHz fixed-frequency PFM operation and ±1.5% reference voltage accuracy over –40°C to 125°C - used in industrial PLC power rails and automotive camera modules.
For engineers reviewing the TPS560430XDBVT datasheet, TPS560430XDBVT pinout, TPS560430XDBVT application, or TPS560430XDBVT equivalent, key selection criteria include input voltage range (4–36 V), adjustable output via FB pin, SOT-23-6 package constraints, and PFM-mode efficiency optimization at light load.
Technical Context
The TPS560430XDBVT implements fixed-frequency peak-current mode control with internal compensation, enabling stable regulation using only external inductor, input/output capacitors, and FB divider resistors. It supports startup with pre-biased output and employs frequency foldback to extend duty cycle beyond 98% when VIN approaches dropout limits.
Its protection architecture includes cycle-by-cycle peak/valley current limiting, hiccup-mode short-circuit response (135 ms off-time), thermal shutdown at 170°C, and precision enable with 1.23 V threshold and 130 mV hysteresis - all integrated without requiring external fault-handling circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4 V to 36 V - supports wide-input industrial and automotive supplies, including 24-V rail and battery-backed systems. |
| Output Current | 600 mA continuous - sufficient for powering microcontrollers, sensors, and interface ICs in space-constrained designs. |
| Switching Frequency | 1.1 MHz nominal - enables compact magnetics and low-profile inductors; PFM mode improves light-load efficiency. |
| Reference Voltage | 1.000 V ±1.5% over –40°C to 125°C - ensures tight output regulation across temperature without external trimming. |
| Minimum On-Time | 60 ns - allows high step-down ratios (e.g., 24 V → 3.3 V) without requiring frequency foldback at moderate loads. |
| Enable Threshold | 1.23 V rising, 1.1 V falling - provides precise UVLO control when paired with resistor divider on EN pin. |
| Thermal Shutdown | 170°C with 12°C hysteresis - protects against sustained overload or poor PCB thermal design in enclosed enclosures. |
Pinout & Package
SOT-23-6 package (2.90 mm × 1.60 mm), thermally enhanced with exposed pad (not electrically connected); designed for minimal board area and simplified layout with short high-current paths.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - CB | Bootstrap capacitor connection | Connects 100-nF ceramic capacitor to SW; supplies gate drive for internal high-side MOSFET. |
| 2 - GND | Power ground | Common return for VIN bypass, output capacitor, and internal low-side FET source; requires shortest possible trace to CIN. |
| 3 - FB | Feedback input | Monitors output via resistor divider; sets VOUT = 1.000 V × (1 + RFBT/RFBB); must not be shorted to GND during operation. |
| 4 - EN | Enable control | Logic-level input: <1.1 V disables regulator; >1.23 V enables; precision threshold enables system-level UVLO design. |
| 5 - VIN | Input supply | Primary power input (4–36 V); powers internal LDO and high-side driver; requires local 10-µF ceramic bypass capacitor. |
| 6 - SW | Switching node | Drives external inductor; connects internally to drain of low-side FET and source of high-side FET; high di/dt node requiring tight loop layout. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated synchronous rectification | Eliminates external Schottky diode; reduces conduction loss and improves full-load efficiency by ~5–8% vs. asynchronous designs. |
| Internal compensation | Removes need for external Type-II/III compensation network; simplifies design and reduces BOM count by ≥3 components. |
| Support for pre-biased output startup | Enables safe power-up into already charged output rails - critical for hot-swap and redundant supply applications. |
| Hiccup-mode short-circuit protection | Limits average power dissipation during sustained overload; prevents thermal runaway without requiring external current sense or latch circuits. |
| 98% maximum duty cycle | Enables operation down to ~1.05 V output at 36 V input; extends usable input range in high-VIN, low-VOUT configurations. |
Applications
| Industrial PLC Power Supply | Automotive Camera Module |
|---|---|
Use Scenario: Powers I/O expansion modules and communication interfaces in programmable logic controllers operating from 24-V factory bus. IC Role / Device Role / Timing Role: Primary 5-V or 3.3-V point-of-load regulator; maintains stable rail under variable load transients from digital isolators and RS-485 transceivers. Use Value: 1.1-MHz PFM operation delivers >85% efficiency at 10–100 mA loads typical of idle PLC states, reducing thermal load in sealed cabinets. | Use Scenario: Supplies image sensor, ISP, and serializer in rear-view or surround-view camera systems powered from vehicle battery (9–16 V). IC Role / Device Role / Timing Role: Input-filtered buck converter generating clean 1.2-V core and 2.8-V analog rails; withstands cold-crank (4.5 V) and load-dump (36 V) transients. Use Value: 4–36 V input range and hiccup protection ensure uninterrupted operation during automotive voltage disturbances without system reset. |
| Grid-Scale Metering Unit | HVAC Controller Board |
Use Scenario: Provides isolated auxiliary power for metrology SoCs and RF modems in smart electricity meters deployed in utility substations. IC Role / Device Role / Timing Role: Secondary regulated supply derived from 12-V or 24-V meter backplane; handles burst-mode communication loads (e.g., NB-IoT transmit peaks). Use Value: 60 ns minimum on-time enables reliable 3.3-V output from 36-V input during brownout conditions, preserving time-critical metering accuracy. | Use Scenario: Powers MCU, display driver, and environmental sensors on wall-mounted HVAC control panels fed from 24-VAC transformer rectified to ~32 VDC. IC Role / Device Role / Timing Role: Main 3.3-V system rail generator; operates continuously across ambient temperatures from –25°C to 70°C. Use Value: ±1.5% reference tolerance and internal soft-start (1.8 ms) prevent output overshoot during transformer inrush, protecting touch-screen controllers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS560430YDBVT | 2.1-MHz switching frequency; otherwise identical pinout, features, and specs. | Better suited for ultra-compact layouts where smaller inductors/capacitors are required; trades ~3–5% peak efficiency for size reduction. | Select when board area is constrained and light-load efficiency is secondary to solution footprint. |
| MP2451DT-LF-Z | 36-V input, 600-mA output, but uses external compensation and lacks pre-bias startup or hiccup protection. | Requires additional design effort for stability; less robust in fault-prone environments like motor drives or field-deployed meters. | Choose only if cost sensitivity outweighs design time and reliability requirements; verify loop stability per application. |
Compared with TPS560430YDBVT, the TPS560430XDBVT offers higher light-load efficiency via PFM mode but larger passive components; versus MP2451DT-LF-Z, it delivers faster time-to-market with internal compensation and stronger fault resilience at minor cost premium.
Availability
TPS560430XDBVT is available at Aetrix Electronics and suitable for industrial PLC power supplies, automotive camera modules, and grid infrastructure metering requiring stable component supply with long-term manufacturability.
Supply support for TPS560430XDBVT 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-reliability DC-DC conversion.
The TPS560430XDBVT belongs to TI's SIMPLE SWITCHER® family - engineered for rugged industrial and automotive power applications where ease of use, small solution size, and robust protection are mandatory design requirements.
FAQ
What is the recommended input capacitor for TPS560430XDBVT?
The TPS560430XDBVT requires a minimum 10-µF X5R/X7R ceramic capacitor placed as close as possible between VIN and GND pins. A parallel 100-nF capacitor is recommended to suppress high-frequency noise. Total effective capacitance must remain ≥10 µF at DC bias and operating temperature; derating curves should be consulted for 12-V and 24-V input cases.
Does TPS560430XDBVT support adjustable output voltage?
Yes, the TPS560430XDBVT supports fully adjustable output voltage via the FB pin. Using a resistor divider (RFBT and RFBB), VOUT is set to 1.000 V × (1 + RFBT/RFBB). TI recommends RFBT between 10 kΩ and 100 kΩ, and 1% tolerance, low-TCR resistors for best accuracy. Fixed 3.3-V variants exist but are separate part numbers (e.g., TPS560430X3F).
Can TPS560430XDBVT start up into a pre-biased output?
Yes, the TPS560430XDBVT explicitly supports startup with pre-biased output - a key feature for hot-swap and redundant power systems. During startup, the device monitors the FB pin and delays high-side switch activation until the output voltage falls below the regulation threshold, preventing reverse current flow through the inductor or output capacitor.
What is the purpose of the CB pin on TPS560430XDBVT?
CB is the bootstrap capacitor terminal for the internal high-side MOSFET gate driver. A 100-nF ceramic capacitor must be connected between CB and SW to generate the floating voltage needed to fully enhance the high-side FET. This capacitor is refreshed each time the low-side FET conducts, and its value directly impacts gate drive strength and efficiency at high duty cycles.
How does hiccup-mode protection work in TPS560430XDBVT?
In TPS560430XDBVT, hiccup-mode activates when the feedback voltage drops below 40% of the 1.000-V reference for 256 consecutive switching cycles - indicating sustained short-circuit or severe overload. The device shuts down for 135 ms (typical), then attempts restart. This cycle repeats until the fault clears, limiting average power dissipation and preventing thermal damage without requiring external latching circuitry.
TPS560430XDBVT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- SIMPLE SWITCHER®
- Package/Case:
- SOT-23-6
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- PFM
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4V
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- 1V
- Voltage - Output (Max):
- 34.2V
- Current - Output:
- 600mA
- Frequency - Switching:
- 1.1MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
TPS560430XDBVT FAQ
1.How can I place an order for TPS560430XDBVT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS560430XDBVT 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 TPS560430XDBVT reliable?
The price and inventory of TPS560430XDBVT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS560430XDBVT is usually 5 days.
3.What payment methods are accepted for TPS560430XDBVT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS560430XDBVT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS560430XDBVT?
TPS560430XDBVT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS560430XDBVT 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 TPS560430XDBVT?
For technical support, including TPS560430XDBVT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS560430XDBVT requirements.
6.How does Aetrix verify that TPS560430XDBVT is sourced from the original manufacturer or authorized distributors?
All TPS560430XDBVT 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 TPS560430XDBVT meets industry standards.
7.What is the process for return or replacement of TPS560430XDBVT?
All TPS560430XDBVT units undergo pre-shipment inspection (PSI). If there is an issue with TPS560430XDBVT, 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 TPS560430XDBVT part is unused and in its original packaging.
Return procedure for TPS560430XDBVT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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