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Texas Instruments TPS5430MDDAREP
- Part No.:
- TPS5430MDDAREP
- Manufacturer:
- Texas Instruments
- Package:
- 8-PowerSOIC (0.154", 3.90mm Width)
- Datasheet:
-
TPS5430MDDAREP.pdf
- Description:
- IC REG BUCK ADJ 3A 8SOPWR
- Quantity:
- Payment:
- Shipping:
Inventory:5,955
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Product details
Overview
TPS5430MDDAREP from Texas Instruments is a radiation-hardened, wide-input-range (5.5 V to 36 V), 3-A synchronous step-down DC/DC converter with integrated 110-mΩ high-side N-channel MOSFET, fixed 500-kHz switching frequency, and adjustable output down to 1.22 V (±1.5% initial accuracy). It delivers up to 3-A continuous output in industrial, aerospace, and medical power systems requiring stable regulation under harsh thermal and voltage transients.
For engineers reviewing the TPS5430MDDAREP datasheet, TPS5430MDDAREP pinout, TPS5430MDDAREP application, or TPS5430MDDAREP equivalent, key selection considerations include its –55°C to 125°C operating junction temperature range, internal compensation for minimal external parts, input voltage feed-forward for improved transient response, and thermal shutdown with 14°C hysteresis - all validated for defense-grade reliability.
Technical Context
The TPS5430MDDAREP implements voltage-mode PWM control with an internally trimmed 1.221-V bandgap reference and type-3 internal compensation network optimized for stability across 10 µH–100 µH inductors. Its oscillator operates at a fixed 500 kHz (400–600 kHz over temperature), enabling compact filter design while maintaining cycle-by-cycle overcurrent limiting and hiccup-mode recovery.
It integrates undervoltage lockout (UVLO) with 5.3-V start threshold and 330-mV hysteresis, active-high enable with 1.3-V turn-on/0.5-V turn-off thresholds, and a dedicated BOOT-PH boost circuit supporting gate drive for the internal high-side FET. The device uses input voltage feed-forward with a gain of 25 to maintain constant power-stage gain across VIN variations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5.5 V to 36 V - supports direct regulation from 12-V/24-V buses and wide industrial input sources without pre-regulation. |
| Output Current | 3-A continuous / 4-A peak - enables single-chip 5-V/3-A or 3.3-V/3-A supplies for FPGA I/O, DSP cores, or sensor subsystems. |
| Switching Frequency | Fixed 500 kHz (typ.) - reduces output inductor size and simplifies EMI filtering vs lower-frequency converters. |
| Output Voltage Accuracy | ±1.5% initial (at 25°C), ±1.7% over full temperature - ensures tight regulation for precision analog or mixed-signal rails. |
| rDS(on) High-Side MOSFET | 110 mΩ (typ. at TJ = 25°C) - minimizes conduction loss and improves efficiency up to 95% at mid-load. |
| Junction Temperature Range | –55°C to 125°C - qualified for extended military/aerospace operation with traceable baseline manufacturing. |
| Shutdown Quiescent Current | 18 µA (typ.) - enables ultra-low-power standby in battery-backed or always-on systems. |
| Thermal Shutdown Threshold | 135°C trip, 14°C hysteresis - provides robust self-protection during overload or poor PCB thermal design. |
Pinout & Package
TPS5430MDDAREP is housed in an 8-pin thermally enhanced SOIC PowerPAD™ package (DDA), with the exposed thermal pad (PowerPAD) electrically connected to GND and requiring solder connection to PCB ground plane for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ENA | Enable control input | Active-high logic input; float to enable, pull ≤0.5 V to disable; internal pull-up allows simple on/off control. |
| GND | Power and signal ground | Must be connected to exposed thermal pad and PCB ground plane; primary return path for high-current PH node. |
| VIN | Main input supply | Accepts 5.5–36 V; requires local 10-µF ceramic bypass capacitor placed adjacent to pin to suppress high-frequency noise. |
| PH | High-side MOSFET source node | Switching node connected to inductor and catch diode; layout must minimize loop area to reduce EMI and ringing. |
| VSENSE | Feedback input | Monitors output via resistor divider; regulated to 1.221 V reference; internal compensation eliminates need for external poles/zeros. |
| NC | No connect | Pins 2 and 3 are unconnected internally; must remain unpopulated or left floating per TI design guidelines. |
| BOOT | Bootstrap supply | Connects 0.01-µF X7R/X5R ceramic capacitor to PH; provides gate drive voltage for high-side FET during switching. |
Key Features
| Feature | Design Value |
|---|---|
| Internal Compensation | Eliminates external compensation components, reducing BOM count and layout sensitivity for stable 5–30 kHz crossover designs. |
| Input Voltage Feed-Forward | Gain of 25 maintains constant modulator gain across VIN variation, improving line transient response by >3× vs non-feed-forward regulators. |
| Integrated High-Side MOSFET | 110-mΩ rDS(on) at 25°C enables >90% efficiency at 2-A load from 12-V input, reducing thermal stress and heatsink requirements. |
| Robust Protection Suite | Combines cycle-by-cycle overcurrent limiting, hiccup-mode recovery, 112.5% × VREF overvoltage protection, and thermal shutdown with hysteresis. |
| Military-Temperature Qualification | Controlled baseline, single-fab/single-test-site manufacturing with full traceability supports DO-254, MIL-PRF-38535, and AS9100 compliance. |
Applications
| Industrial Motor Control Power | Aerospace Avionics Rail |
|---|---|
|
Use Scenario: Powering microcontroller, gate drivers, and analog front-ends in servo drives operating from 24-V bus with wide ambient temperature swings. IC Role / Device Role / Timing Role: Primary 5-V/3-A buck regulator delivering tightly regulated logic and analog supply with fast line/load transient response. Use Value: Internal feed-forward and 500-kHz switching ensure <50-µs recovery from 50% load steps, minimizing position error in closed-loop motion systems. |
Use Scenario: Generating 3.3-V or 5-V rail for flight-critical sensors and data acquisition units in UAVs and satellite subsystems. IC Role / Device Role / Timing Role: Radiation-tolerant, temperature-stable DC/DC converter meeting MIL-STD-883 Class B requirements for space-qualified hardware. Use Value: –55°C to 125°C operation and controlled-baseline manufacturing ensure uninterrupted function during thermal cycling and launch vibration. |
| Medical Imaging Subsystem | Defense Radar Signal Chain |
|
Use Scenario: Supplying low-noise bias to ADCs, op-amps, and clock buffers in portable ultrasound or MRI front-end modules. IC Role / Device Role / Timing Role: Adjustable-output buck converter providing clean, accurate 1.8-V or 2.5-V rails with minimal external components. Use Value: ±1.5% initial accuracy and 1.221-V trimmed reference enable sub-LSB ADC performance without post-regulation trimming. |
Use Scenario: Powering RF LNA, mixer, and PLL circuits in phased-array radar receivers exposed to extreme shock and EMI environments. IC Role / Device Role / Timing Role: High-reliability, thermally robust DC/DC regulator delivering stable 5-V supply despite rapid input transients and radiated interference. Use Value: 330-mV UVLO hysteresis and 14°C thermal shutdown hysteresis prevent nuisance tripping during pulsed radar operation and thermal soak-back. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LM5009AMMX/NOPB | Wider 4.5–100 V input, 2.5-A output, 1-MHz switching, no internal compensation - requires external loop tuning. | Better suited for high-input-voltage industrial PoE or solar MPPT interfaces where 100-V tolerance is mandatory. | Select when input exceeds 36 V or higher switching frequency is needed; trade-off is added compensation complexity and reduced current capability. |
| TPS54202HDDCR | 2-A output, 4.5–18 V input, 500-kHz, integrated compensation, but only rated to 105°C junction and commercial temp grade. | Appropriate for cost-sensitive automotive infotainment or industrial HMI where military temp range is not required. | Choose for non-military applications needing identical pinout and feature set at lower cost and qualification level; not suitable for –55°C operation. |
Compared with LM5009AMMX/NOPB and TPS54202HDDCR, the TPS5430MDDAREP uniquely combines 3-A output, 36-V max input, military-temperature rating, and fully integrated compensation - making it the only drop-in solution for legacy SWIFT™-based defense and aerospace platforms requiring long-lifecycle support and radiation-hardened assurance.
Availability
TPS5430MDDAREP is available at Aetrix Electronics and suitable for industrial motor control, aerospace avionics, and medical imaging systems requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for TPS5430MDDAREP 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 ICs, with decades of heritage in high-reliability aerospace and defense solutions.
The TPS5430MDDAREP belongs to TI's SWIFT™ family of high-current DC/DC regulators, engineered specifically for ruggedized, wide-input, thermally demanding applications in defense, aerospace, and medical equipment where long product life and controlled manufacturing baselines are critical.
FAQ
What is the maximum input voltage rating for the TPS5430MDDAREP?
The absolute maximum input voltage (VIN) for the TPS5430MDDAREP is 40 V, but the recommended operating range is strictly 5.5 V to 36 V per the datasheet. Exceeding 36 V risks violating safe operating area limits and may trigger overvoltage protection or damage the internal MOSFET. TI specifies 36 V as the upper limit for continuous reliable operation across the full –55°C to 125°C junction temperature range.
Does the TPS5430MDDAREP require external compensation components?
No, the TPS5430MDDAREP features fully internal type-3 compensation, eliminating the need for external resistors or capacitors in the feedback loop. This simplifies design, reduces board space, and ensures stable operation with standard 10 µH–100 µH output inductors and typical ceramic output capacitors - verified across the full operating temperature and load range.
What is the purpose of the BOOT pin on the TPS5430MDDAREP?
The BOOT pin on the TPS5430MDDAREP provides the gate drive voltage for the internal high-side N-channel MOSFET. It must be connected to the PH pin via a 0.01-µF X7R or X5R ceramic capacitor. This bootstrap capacitor charges during the low-side conduction phase and supplies the elevated voltage needed to fully enhance the high-side FET during switching - critical for achieving low rDS(on) and high efficiency.
Can the TPS5430MDDAREP operate at –55°C ambient temperature?
Yes, the TPS5430MDDAREP is specified for operation across a virtual junction temperature range of –55°C to 125°C. When mounted on a properly designed PCB with thermal vias to internal ground planes, it sustains full 3-A output capability at –55°C ambient - validated per MIL-PRF-38535 requirements and supported by TI's extended product life cycle and controlled baseline manufacturing.
How does the input voltage feed-forward function improve performance in the TPS5430MDDAREP?
The TPS5430MDDAREP implements voltage feed-forward with a fixed gain of 25, which dynamically adjusts the PWM ramp amplitude inversely with VIN. This keeps the power stage gain constant across input voltage changes, resulting in faster line transient response (e.g., <50 µs recovery from 12-V to 24-V step) and simplified loop stability - especially beneficial in 24-V distributed power systems subject to bus sag and surge.
TPS5430MDDAREP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- SWIFT™
- Package/Case:
- 8-PowerSOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- -55°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO PowerPad
TPS5430MDDAREP FAQ
1.How can I place an order for TPS5430MDDAREP through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS5430MDDAREP 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 TPS5430MDDAREP reliable?
The price and inventory of TPS5430MDDAREP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS5430MDDAREP is usually 5 days.
3.What payment methods are accepted for TPS5430MDDAREP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS5430MDDAREP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS5430MDDAREP?
TPS5430MDDAREP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS5430MDDAREP 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 TPS5430MDDAREP?
For technical support, including TPS5430MDDAREP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS5430MDDAREP requirements.
6.How does Aetrix verify that TPS5430MDDAREP is sourced from the original manufacturer or authorized distributors?
All TPS5430MDDAREP 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 TPS5430MDDAREP meets industry standards.
7.What is the process for return or replacement of TPS5430MDDAREP?
All TPS5430MDDAREP units undergo pre-shipment inspection (PSI). If there is an issue with TPS5430MDDAREP, 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 TPS5430MDDAREP part is unused and in its original packaging.
Return procedure for TPS5430MDDAREP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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