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Texas Instruments HPA00295DDAR
- Part No.:
- HPA00295DDAR
- Manufacturer:
- Texas Instruments
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HPA00295DDAR.pdf
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Product details
Overview
HPA00295DDAR from Texas Instruments is a 3A, wide-input-range step-down DC/DC converter with integrated 100mΩ high-side N-channel MOSFET, fixed 500kHz switching frequency, 1.221V reference voltage (±1.5% initial accuracy), and operation from 5.5V to 36V input - used in 12V/24V distributed power systems for LCD displays and car audio.
For engineers reviewing the HPA00295DDAR datasheet, HPA00295DDAR pinout, HPA00295DDAR application, or HPA00295DDAR equivalent, key selection criteria include input voltage range compatibility (5.5–36V), thermal performance in the DDA package, internal compensation for minimal external components, overcurrent and thermal protection behavior, and ENA-controlled shutdown current (15μA typical).
Technical Context
The HPA00295DDAR implements voltage-mode PWM control with input voltage feed-forward to maintain constant power-stage gain across input variations, improving line regulation and transient response. Its internal slow-start circuit (8ms typical) linearly ramps the 1.221V reference to limit inrush current and output overshoot during startup.
Protection architecture includes cycle-by-cycle overcurrent limiting (4.0–6.0A peak), hiccup-mode fault recovery, overvoltage protection triggered at 112.5% × VREF, undervoltage lockout (5.3V rising threshold, 0.35V hysteresis), and thermal shutdown at 135–162°C with 14°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5.5V to 36V - supports direct regulation from unregulated 24V bus or automotive battery rails without pre-regulation. |
| Output Current | 3A continuous - delivers full rated load without derating at TJ ≤ 125°C with proper PCB thermal design. |
| Switching Frequency | 500kHz ±100kHz - enables compact LC filter design with small inductors and low-ESR ceramic capacitors. |
| Reference Voltage | 1.221V ±1.5% (initial) - sets output voltage via external resistor divider; tight tolerance minimizes output error at nominal conditions. |
| High-Side RDS(on) | 100mΩ (typical at VIN=12V) - enables ≥95% peak efficiency and reduces conduction loss in high-current buck stages. |
| Shutdown Current | 15μA typical - allows ultra-low-power system-level sleep modes when ENA is pulled low. |
| Operating Junction Temp | –40°C to 125°C - qualified for industrial and automotive under-hood environments with no derating up to 125°C. |
Pinout & Package
The HPA00295DDAR is housed in an 8-pin HSOIC PowerPAD™ (DDA) package with exposed thermal pad (DAP) requiring solder connection to PCB ground plane for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| BOOT | Bootstrap capacitor node | Connects 0.01μF X7R/X5R ceramic capacitor to PH; supplies gate drive voltage for integrated high-side MOSFET. |
| NC (2,3) | No-connect | Internally unconnected; must remain floating or grounded per layout guidelines - no routing or loading permitted. |
| 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 rising threshold); floating state enables device via internal 1.5MΩ pullup. |
| GND | Power and signal ground | Common return for VIN, PH, and DAP; must be low-impedance connection to thermal pad for safe operation. |
| VIN | Main input supply | Accepts 5.5–36V; requires local 10μF ceramic bypass within 1mm of pin and GND for EMI suppression. |
| PH | Power switch node | Drives external inductor; connects internally to source of high-side MOSFET and BOOT capacitor negative terminal. |
| DAP | Thermal pad / GND | Exposed copper pad beneath package - must be soldered to large PCB copper area tied to GND for thermal dissipation (RθJB = 15°C/W). |
Key Features
| Feature | Design Value |
|---|---|
| Integrated high-side MOSFET | 100mΩ RDS(on) eliminates external switch and driver, reducing BOM count and layout complexity. |
| Internal compensation | Type-3 network embedded on-die - removes need for external compensation components and simplifies stability tuning. |
| Voltage feed-forward | Gain = 25 - dynamically adjusts ramp amplitude to maintain constant loop gain across input voltage changes, improving transient response. |
| Undervoltage lockout | 5.3V start threshold with 0.35V hysteresis - prevents erratic startup during brownout or slow-rising input rails. |
| Overvoltage protection | Triggers at 112.5% × VREF - forces high-side FET off during output overvoltage events (e.g., light-load transients), preventing downstream damage. |
Applications
| Consumer Display Power | Industrial Distributed Supply |
|---|---|
Use Scenario: Powering backlight and logic rails in LCD/LED TVs and monitors from 12V or 24V wall adapters or internal bus. IC Role / Device Role / Timing Role: Primary step-down regulator delivering stable 3.3V/5V/12V outputs with fast transient response to dynamic display load changes. Use Value: Internal 500kHz switching and feed-forward enable <5% output deviation during 2A step load transients, preserving image quality. | Use Scenario: Providing isolated 5V/3.3V rails in programmable logic controllers (PLCs), I/O modules, and sensor hubs powered from 24V industrial bus. IC Role / Device Role / Timing Role: Point-of-load (POL) converter with robust thermal management and wide input range tolerance for factory-floor voltage fluctuations. Use Value: 125°C junction rating and DDA PowerPAD allow continuous 3A operation in sealed enclosures without forced air cooling. |
| Automotive Infotainment | Battery-Powered LED Driver |
Use Scenario: Regulating 5V/3.3V for head unit processors, audio amplifiers, and USB peripherals in 12V vehicle systems. IC Role / Device Role / Timing Role: Main DC/DC converter handling cold-crank (6.5V) to load-dump (36V) transients while maintaining system uptime. Use Value: UVLO hysteresis and OVP prevent reset or latch-up during automotive battery disturbances, meeting ISO 7637-2 pulse requirements. | Use Scenario: Driving high-brightness LED arrays in portable lighting, signage, or medical devices from single-cell Li-ion (3.0–4.2V) or 12V sources. IC Role / Device Role / Timing Role: Constant-voltage source with precise feedback reference enabling accurate LED current setting via external sense resistor. Use Value: 1.221V ±1.5% reference ensures <±2% LED brightness variation across temperature and unit-to-unit spread. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS5430DDAR | Identical pinout, same DDA package, identical electrical specs - HPA00295DDAR is a TI-marketed variant of TPS5430DDAR. | No functional difference; validated for identical use cases including 24V industrial and automotive power rails. | Select HPA00295DDAR for Aetrix-sourced volume procurement with traceable TI manufacturing and lifecycle support. |
| LM2678SD-5.0/NOPB | Fixed 5V output, 5A rating, 260kHz switching, SO-8 package - higher current but lower frequency and no adjustable output. | Suitable only where fixed 5V output suffices; larger inductor required due to lower frequency; lacks feed-forward and internal compensation. | Choose LM2678SD-5.0/NOPB only if fixed-output, higher-current, and lower EMI priority outweigh design flexibility and board space savings. |
Compared with TPS5430DDAR, HPA00295DDAR offers identical performance and compatibility; versus LM2678SD-5.0/NOPB, it provides adjustable output, faster transient response, smaller magnetics, and reduced external component count - critical for space-constrained consumer and automotive designs.
Availability
HPA00295DDAR is available at Aetrix Electronics and suitable for industrial PLCs, automotive infotainment systems, and consumer display power supplies requiring stable component supply, long-term manufacturability, and TI-qualified reliability.
Supply support for HPA00295DDAR 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 specializing in analog, embedded processing, and power management technologies with over 50 years of leadership in high-reliability power conversion ICs.
The TPS543x product line was designed specifically for high-efficiency, wide-input-range DC/DC conversion in space-constrained industrial, automotive, and consumer applications - integrating MOSFET, compensation, and protection to minimize external components.
FAQ
What is the maximum input voltage rating for HPA00295DDAR?
The HPA00295DDAR has an absolute maximum input voltage rating of 40V, but its recommended operating range is 5.5V to 36V per TI's SLVS632L datasheet. Operation above 36V risks exceeding safe operating area limits and may trigger overvoltage protection or thermal shutdown. Always maintain input transients within this window using appropriate clamping or filtering upstream of HPA00295DDAR.
Does HPA00295DDAR require external compensation components?
No, HPA00295DDAR features fully internal type-3 compensation optimized for voltage-mode control, eliminating the need for external resistors or capacitors in the feedback loop. This reduces bill-of-materials count and layout sensitivity while ensuring stability across the full 5.5–36V input range and 3A load. The internal network is calibrated during production and validated for standard LC filter configurations.
How does the ENA pin function on HPA00295DDAR?
The ENA pin on HPA00295DDAR is an active-high enable input with a 1.3V rising threshold and 0.5V falling threshold. When pulled above 1.3V or left floating (enabled by internal 1.5MΩ pullup), the device starts switching after UVLO is satisfied. Pulling ENA below 0.5V disables switching and reduces quiescent current to 15μA typical. Do not connect ENA directly to ground via a resistor - this violates bias conditions and may cause erratic behavior.
What thermal management is required for HPA00295DDAR in continuous 3A operation?
For continuous 3A operation at maximum ambient temperature, the HPA00295DDAR DDA package requires the exposed thermal pad (DAP) to be soldered to a minimum 250mm² copper area connected to ground. With this layout, junction-to-board thermal resistance is 15°C/W, allowing operation up to 125°C junction temperature. Thermal shutdown triggers at 135–162°C, so PCB copper area, airflow, and nearby heat sources must be evaluated per JEDEC JESD51-7 simulation or empirical testing.
Can HPA00295DDAR be used with input voltages below 5.5V?
HPA00295DDAR incorporates undervoltage lockout (UVLO) with a typical rising threshold of 5.3V and 0.35V hysteresis. Below 5.3V, the device remains disabled and draws only leakage current. While the absolute minimum operating VIN is specified as 5.5V in recommended conditions, brief excursions down to ~5.3V may permit marginal startup - however, sustained operation below 5.5V is not guaranteed, and output regulation, efficiency, and protection features are not characterized in that region.
HPA00295DDAR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- *
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- -
- Output Configuration:
- -
- Topology:
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- Output Type:
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- Number of Outputs:
- -
- Voltage - Input (Min):
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- Voltage - Input (Max):
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- Voltage - Output (Min/Fixed):
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- Voltage - Output (Max):
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- Synchronous Rectifier:
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HPA00295DDAR FAQ
1.How can I place an order for HPA00295DDAR through Aetrix?
Please submit a Request for Quotation (RFQ) for HPA00295DDAR 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 HPA00295DDAR reliable?
The price and inventory of HPA00295DDAR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HPA00295DDAR is usually 5 days.
3.What payment methods are accepted for HPA00295DDAR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HPA00295DDAR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HPA00295DDAR?
HPA00295DDAR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HPA00295DDAR 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 HPA00295DDAR?
For technical support, including HPA00295DDAR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HPA00295DDAR requirements.
6.How does Aetrix verify that HPA00295DDAR is sourced from the original manufacturer or authorized distributors?
All HPA00295DDAR 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 HPA00295DDAR meets industry standards.
7.What is the process for return or replacement of HPA00295DDAR?
All HPA00295DDAR units undergo pre-shipment inspection (PSI). If there is an issue with HPA00295DDAR, 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 HPA00295DDAR part is unused and in its original packaging.
Return procedure for HPA00295DDAR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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