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Texas Instruments TPS5430DDA
- Part No.:
- TPS5430DDA
- Manufacturer:
- Texas Instruments
- Package:
- 8-PowerSOIC (0.154", 3.90mm Width)
- Datasheet:
-
TPS5430DDA.pdf
- Description:
- IC REG BUCK ADJ 3A 8SOPWR
- Quantity:
- Payment:
- Shipping:
Inventory:3,483
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Product details
Overview
TPS5430DDA from Texas Instruments is a 3A, wide-input (5.5V–36V), synchronous step-down DC/DC converter with integrated 100mΩ high-side N-channel MOSFET, fixed 500kHz switching frequency, and internal compensation. It delivers regulated output down to 1.22V with ±1.5% initial accuracy and supports industrial power rails including 12V and 24V distributed systems.
For engineers reviewing the TPS5430DDA datasheet, TPS5430DDA pinout, TPS5430DDA application, or TPS5430DDA equivalent, key selection considerations include input voltage range compatibility (up to 36V), thermal performance in the HSOIC-8 PowerPAD™ package, ENA-controlled shutdown (15μA), and voltage feed-forward for improved line transient response.
Technical Context
The TPS5430DDA implements constant-frequency voltage-mode PWM control with integrated voltage feed-forward to maintain stable modulator gain across input voltage variations-enabling predictable loop response and simplified stability design. Its internal 1.221V bandgap reference and type-3 compensation network eliminate external compensation components.
Protection architecture includes cycle-by-cycle overcurrent limiting (4.0–6.0A peak), thermal shutdown (135–162°C trip), overvoltage protection (112.5% × VREF), and undervoltage lockout (5.3V rising threshold with 350mV hysteresis). The BOOT-to-PH bootstrap circuit supplies gate drive for the integrated high-side MOSFET using a 0.01μF ceramic capacitor.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5.5V to 36V - supports 12V/24V bus systems and wide industrial input rails without external pre-regulation. |
| Output Current | 3A continuous / 4A peak - enables single-chip regulation for mid-power loads like LCD displays or car audio amplifiers. |
| Switching Frequency | Fixed 500kHz - allows compact LC filter design with reduced inductor size and predictable EMI profile. |
| Feedback Reference | 1.221V ±1.5% (initial) - sets minimum output voltage; enables precise adjustable outputs via resistor divider. |
| High-Side RDS(on) | 100mΩ (typ.) at VIN = 12V - contributes to up to 95% efficiency and reduces thermal load in thermally constrained layouts. |
| Shutdown Current | 15μA (typ.) - enables low-power standby modes in battery-backed or energy-sensitive applications. |
| Operating Junction Temp | –40°C to +125°C - qualified for automotive cabin, industrial control, and outdoor embedded environments. |
Pinout & Package
The TPS5430DDA is housed in an 8-pin HSOIC package with exposed thermal pad (PowerPAD™), optimized for PCB heat dissipation (RθJB = 15°C/W). Thermal pad must be soldered to ground plane for rated performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BOOT | Bootstrap supply node | Connects 0.01μF X7R/X5R capacitor to PH; provides gate drive voltage for integrated high-side MOSFET. |
| NC (2,3) | No-connect | Internally unconnected; must remain floating-no routing or grounding required. |
| VSENSE | Feedback input | Monitors output voltage divider midpoint; regulates output by comparing to 1.221V internal reference. |
| ENA | Enable control | Active-high logic input (1.3V rise, 0.5V fall); floating state enables operation via internal 1.5MΩ pullup. |
| GND | Power and signal ground | Reference for all analog circuits; must connect to exposed DAP (thermal pad) for thermal and electrical integrity. |
| VIN | Main input supply | Accepts 5.5–36V; requires local 10μF ceramic bypass within 1mm of pin and GND. |
| PH | Power switch node | Drives external inductor; connects to BOOT capacitor and high-side MOSFET source terminal. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated high-side MOSFET | 100mΩ RDS(on) enables self-contained buck conversion without external switch-reducing BOM count and layout complexity. |
| Internal compensation | Type-3 network eliminates need for external compensation components, accelerating design cycle and improving consistency across production units. |
| Voltage feed-forward | Gain of 25 stabilizes power stage gain vs. input voltage variation-improving line regulation and reducing output overshoot during input transients. |
| Thermal-enhanced PowerPAD™ | Exposed DAP in HSOIC-8 package lowers junction-to-board thermal resistance to 6°C/W-supporting 3A continuous operation without heatsink in standard 2-layer PCBs. |
| Hiccup-mode overcurrent protection | Enters 13–20ms fault recovery cycle under sustained overload-preventing thermal runaway while enabling automatic restart after cooling. |
Applications
| Industrial 12V/24V Distributed Power | Automotive Cabin Audio Supply |
|---|---|
Use Scenario: Regulating 24V vehicle battery or industrial bus to 5V/3.3V for microcontrollers, sensors, and interface ICs in control cabinets or remote I/O modules. IC Role / Device Role / Timing Role: Primary non-isolated buck regulator delivering stable, high-current DC output with fast line transient response to accommodate engine cranking dips. Use Value: Input voltage feed-forward maintains consistent regulation during 18–32V input swings; thermal PAD ensures reliable 3A operation in sealed enclosures without forced airflow. | Use Scenario: Powering Class AB/D amplifier stages and DSP subsystems in aftermarket car audio head units or OEM infotainment modules. IC Role / Device Role / Timing Role: High-efficiency point-of-load converter converting 12V battery rail to clean 5V supply for audio codecs and digital signal processors. Use Value: 95% peak efficiency minimizes heat generation near temperature-sensitive audio components; ENA pin enables mute/sleep sequencing synchronized with system MCU. |
| LCD Display Backlight Driver Support | Set-Top Box Power Management |
Use Scenario: Providing bias voltage for LED backlight drivers in commercial signage or medical display panels requiring stable 12V or 15V rails. IC Role / Device Role / Timing Role: Pre-regulator stepping down 24V input to intermediate voltage feeding constant-current LED driver ICs. Use Value: Fixed 500kHz switching enables small, low-profile inductors; internal OVP prevents damaging voltage spikes during LED string open-circuit faults. | Use Scenario: Generating 3.3V and 5V rails for SoC, memory, and HDMI PHY in consumer set-top boxes operating from 12V wall adapters. IC Role / Device Role / Timing Role: Main DC/DC converter supplying core logic voltage with tight output tolerance and low noise for video processing pipelines. Use Value: ±1.5% initial VREF accuracy and internal slow-start (8ms typ.) prevent output overshoot during cold boot-protecting downstream FPGAs and flash memory. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS54302DDAR | Same 5.5–36V input, but adds adjustable soft-start (0.1–10ms) and enhanced light-load efficiency via Eco-mode™. | Better suited for battery-powered or ultra-low-quiescent systems where <25μA shutdown current is critical. | Select TPS54302DDAR if programmable start-up timing or sub-20μA IQ is required; otherwise TPS5430DDA offers proven cost/performance balance. |
| LM2678SD-5.0/NOPB | Fixed 5V output, 5A rating, 260mΩ MOSFET, 260kHz switching-lower efficiency, larger magnetics, no voltage feed-forward. | Applicable only where fixed 5V output suffices and board space allows larger inductor; lacks line transient optimization. | Choose LM2678SD-5.0/NOPB only for legacy 5V-only designs with relaxed efficiency and size constraints; not drop-in compatible. |
Compared with TPS5430DDA, TPS54302DDAR improves light-load behavior and start-up flexibility but shares identical pinout and thermal footprint, while LM2678SD-5.0/NOPB trades integration and performance for simplicity in fixed-output, lower-frequency applications.
Availability
TPS5430DDA is available at Aetrix Electronics and suitable for industrial 24V distributed power, automotive cabin audio supplies, and LCD display backlight support requiring stable component supply and long-term manufacturability.
Supply support for TPS5430DDA 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 power conversion ICs.
The TPS543x product line was engineered for high-current, wide-input DC/DC conversion in space-constrained industrial and automotive applications-emphasizing integration, thermal robustness, and transient resilience without external compensation.
FAQ
What is the maximum input voltage rating for the TPS5430DDA?
The TPS5430DDA has an absolute maximum input voltage rating of 40V, but its recommended operating input voltage range is 5.5V to 36V. Operation above 36V risks exceeding safe operating area limits and may trigger overvoltage protection or degrade reliability. Always observe the 36V upper limit in continuous operation per TI's SLVS632L datasheet.
Does the TPS5430DDA require external compensation components?
No, the TPS5430DDA features fully internal type-3 compensation, eliminating the need for external resistors or capacitors in the feedback loop. This simplifies layout, reduces BOM count, and ensures consistent stability across production units without tuning-verified across –40°C to +125°C junction temperature.
How does the ENA pin function on the TPS5430DDA?
The ENA pin on the TPS5430DDA is an active-high enable input with 1.3V rising threshold and 0.5V falling threshold. When pulled above 1.3V or left floating (due to internal 1.5MΩ pullup), the device operates normally; below 0.5V, it enters shutdown with 15μA typical supply current. Do not tie ENA directly to ground via a resistor-this violates datasheet guidance and may cause erratic behavior.
What thermal pad connection is required for the TPS5430DDA in the DDA package?
The exposed thermal pad (DAP) on the TPS5430DDA's HSOIC-8 PowerPAD™ package must be soldered to a solid copper ground plane on the PCB. This connection is mandatory-not optional-for achieving specified thermal performance (RθJB = 15°C/W) and preventing thermal shutdown under 3A continuous load. Thermal vias beneath the pad improve heat transfer to inner layers.
Can the TPS5430DDA be used in a 5V-only output application?
Yes, the TPS5430DDA supports 5V output via an external resistor divider on the VSENSE pin, leveraging its 1.221V internal reference. A common configuration uses R1 = 10kΩ and R2 = 3.24kΩ to set VOUT = 5.0V. The device maintains ±1.5% initial accuracy and tight line/load regulation-validated in TI's Figure 7-1 reference design for 12V-to-5V conversion.
TPS5430DDA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-PowerSOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 5.5V
- Voltage - Input (Max):
- 36V
- Voltage - Output (Min/Fixed):
- 1.221V
- Voltage - Output (Max):
- 32.04V
- Current - Output:
- 3A
- Frequency - Switching:
- 500kHz
- Synchronous Rectifier:
- No
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO PowerPad
TPS5430DDA FAQ
1.How can I place an order for TPS5430DDA through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS5430DDA 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 TPS5430DDA reliable?
The price and inventory of TPS5430DDA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS5430DDA is usually 5 days.
3.What payment methods are accepted for TPS5430DDA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS5430DDA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS5430DDA?
TPS5430DDA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS5430DDA 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 TPS5430DDA?
For technical support, including TPS5430DDA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS5430DDA requirements.
6.How does Aetrix verify that TPS5430DDA is sourced from the original manufacturer or authorized distributors?
All TPS5430DDA 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 TPS5430DDA meets industry standards.
7.What is the process for return or replacement of TPS5430DDA?
All TPS5430DDA units undergo pre-shipment inspection (PSI). If there is an issue with TPS5430DDA, 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 TPS5430DDA part is unused and in its original packaging.
Return procedure for TPS5430DDA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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