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Texas Instruments TPS56520PWPR
- Part No.:
- TPS56520PWPR
- Manufacturer:
- Texas Instruments
- Package:
- 20-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPS56520PWPR.pdf
- Description:
- IC REG BUCK ADJ 5A 20HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:452
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Product details
Overview
TPS56520PWPR from Texas Instruments is a 5A synchronous step-down DC-DC converter with D-CAP2™ control, 4.5V–17V input range, 0.6V–1.87V programmable output voltage via I²C or resistor divider, and 500kHz switching frequency. It integrates high-side (44mΩ) and low-side (32mΩ) MOSFETs and delivers ±1% output voltage accuracy for microprocessor core power in space-constrained consumer electronics.
For engineers reviewing the TPS56520PWPR datasheet, TPS56520PWPR pinout, TPS56520PWPR application, or TPS56520PWPR equivalent, key selection considerations include I²C-based voltage scaling capability, monotonic pre-biased soft-start, Eco-mode™ light-load efficiency, and thermal performance in the HTSSOP-20 PowerPAD™ package.
Technical Context
The TPS56520PWPR implements adaptive on-time D-CAP2™ control-eliminating external compensation while enabling fast transient response with ceramic output capacitors. Its dual regulation modes support both external resistor-divider feedback (VFB) and internal VID programming (SDA/SCL/A0/A1), with seamless PWM-to-Eco-mode transition under load variation.
It features integrated 5.5V linear regulator (VREG5), open-drain PGOOD monitoring, valley-current overcurrent protection, thermal shutdown at 160°C with 23°C hysteresis, and undervoltage lockout (UVLO) with 3.9V nominal enable threshold and 0.56V hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 17V - supports wide-input industrial and consumer power rails including 5V, 12V, and 15V intermediate bus systems. |
| Output Current | 5A continuous - rated for sustained core power delivery to media processors and SoCs without derating at 25°C ambient. |
| Output Voltage Range | 0.6V to 1.87V in 10mV steps - enables precise VCORE tuning for ARM Cortex-A, MIPS, or DSP cores via I²C or external resistive divider. |
| Switching Frequency | 500kHz typical - balances efficiency, inductor size (optimized for 1.0µH–2.2µH), and EMI profile for high-density PCB layouts. |
| Output Voltage Accuracy | ±1% over line/load/temperature - ensures stable operation of voltage-sensitive digital logic without margining overhead. |
| High/Low-Side RDS(on) | 44mΩ / 32mΩ - minimizes conduction loss at 5A, supporting >90% peak efficiency with proper layout and thermal management. |
| I²C Interface | Standard-mode (400kHz) compatible - allows dynamic voltage scaling, current limit adjustment, and power-good status readback during system runtime. |
Pinout & Package
TPS56520PWPR uses the HTSSOP-20 (PWP) package with exposed thermal pad (PowerPAD™), measuring 6.50 mm × 4.40 mm, requiring soldered GND connection to the pad for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN | Enable input | Active-high logic control; ≥1.85V enables regulation, ≤0.6V disables converter and reduces quiescent current to 200µA. |
| SDA, SCL, A0, A1 | I²C interface and address pins | Supports up to four devices on same bus; A0/A1 set 2-bit slave address (01101xx); SDA/SCL enable real-time VID updates and telemetry. |
| VIN | 5.5V LDO input | Powers internal 5.5V regulator (VREG5); must be supplied from stable ≥4.5V source independent of PVIN. |
| PVIN (7,8) | Main power input | Connects directly to high-side MOSFET drains; accepts 4.5V–17V input; requires local 10µF ceramic decoupling. |
| PGND (9,10) | Power ground return | Low-side MOSFET source return path; must be routed separately from signal ground to minimize noise coupling into VFB/SS. |
| SW (11–13) | Switch node | Three parallel connections reduce trace inductance and improve current sharing across integrated FETs; connects to 1.5µH inductor. |
| VBST | Bootstrap supply | Drives high-side gate; requires 0.1µF ceramic capacitor between VBST and SW to sustain gate drive during 100% duty cycle. |
| PGOOD | Open-drain power-good | Asserts low when VOUT deviates >15% from target; used for sequencing or fault indication; requires external pull-up. |
| VREG5 | 5.5V LDO output | Supplies internal circuitry and can power external bias rails; bypassed with ≥2.0µF ceramic capacitor to GND. |
| GND | Signal ground reference | Return for sensitive analog nodes (VFB, SS); must tie to PGND at single-point star ground near IC to avoid ground bounce. |
| SS | Soft-start timing | Capacitor from SS to GND sets ramp time; internal 6µA charge current enables monotonic startup into pre-biased outputs. |
| VOUT | Output voltage sense | Direct connection to output rail; used only in internal VID mode; ties to VFB node in external regulation mode. |
| VFB | Feedback input | Resistor divider from VOUT sets output voltage in external mode; internal 0.6V reference enables 0.6V–1.87V range. |
Key Features
| Feature | Design Value |
|---|---|
| D-CAP2™ adaptive on-time control | Eliminates external compensation components while maintaining stability with ultra-low-ESR ceramic capacitors and enabling <10µs load transient response. |
| I²C programmable voltage scaling | Enables dynamic core voltage adjustment (0.6V–1.87V in 10mV steps) for DVFS in media processors without hardware changes. |
| Monotonic pre-biased soft-start | Prevents reverse current flow during startup into powered rails using controlled SS capacitor charging and internal current limiting. |
| Eco-mode™ light-load efficiency | Disables PWM switching below ~100mA load, reducing quiescent current to 920µA and maintaining >85% efficiency at 1mA output. |
| Integrated 5.5V linear regulator (VREG5) | Provides clean, regulated supply for internal logic and optional external circuitry-bypassed with ≥2.0µF ceramic capacitor for PSRR. |
| Hiccup-mode overcurrent protection | Enters auto-retry shutdown on sustained overcurrent, limiting average power dissipation and preventing thermal runaway during short-circuit faults. |
Applications
| Media Processor Core Power | SoC Voltage Scaling |
|---|---|
|
Use Scenario: Powers ARM-based media processors in digital TVs and set-top boxes requiring dynamic voltage/frequency scaling (DVFS) during video decode and UI rendering. IC Role / Device Role / Timing Role: Primary VCORE regulator delivering 5A at 0.9V–1.2V with I²C-controlled VID updates synchronized to processor P-state transitions. Use Value: Enables real-time voltage reduction during idle states, cutting dynamic power by up to 40% versus fixed-output regulators. |
Use Scenario: Supplies configurable core voltage to multi-core SoCs in streaming devices where different clusters operate at distinct performance levels. IC Role / Device Role / Timing Role: Dual-mode regulator supporting both external resistor-set baseline voltage and I²C-triggered per-cluster voltage adjustments. Use Value: Eliminates need for multiple discrete regulators or complex PMICs-reducing BOM count and PCB area by 30% in compact designs. |
| High-Density Power Distribution | Consumer Audio/Video System Rails |
|
Use Scenario: Delivers tightly regulated 1.1V core power in space-constrained STB mainboards where thermal headroom is limited to 25°C above ambient. IC Role / Device Role / Timing Role: High-efficiency buck converter with PowerPAD™ thermal pad dissipating up to 2.1W junction-to-board, enabling 5A operation without heatsink. Use Value: Achieves >92% peak efficiency at 5A/12VIN/1.1VOUT, reducing board-level heat generation and simplifying thermal design. |
Use Scenario: Generates 1.8V I/O rail for HDMI transceivers and DDR memory interfaces in Blu-ray players with strict EMI limits. IC Role / Device Role / Timing Role: Synchronous buck regulator with 500kHz fixed-frequency operation and optimized layout guidelines for low radiated emissions. Use Value: Meets CISPR-22 Class B EMI requirements without shielding, thanks to D-CAP2™'s jitter-free switching and integrated FETs minimizing dv/dt noise. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS56720PWPR | 7A output rating, lower RDS(on) (30mΩ/24mΩ), identical pinout and feature set. | Required when system peak load exceeds 5A or higher efficiency at 6–7A is needed; same PCB layout usable. | Select TPS56720PWPR if future-proofing for higher current or tighter thermal constraints is required without redesign. |
| MP2359DJ-LF-P | Monolithic 5A buck with 4.5V–24V input, no I²C interface, fixed 500kHz frequency, ±2% output accuracy. | Suitable for cost-sensitive, non-scalable applications where VID control and tight accuracy are not required. | Choose MP2359DJ-LF-P only for static-voltage applications with relaxed accuracy and no need for runtime voltage adjustment. |
Compared with TPS56720PWPR, the TPS56520PWPR offers lower cost and thermal footprint for 5A use cases; versus MP2359DJ-LF-P, it provides superior voltage accuracy, I²C configurability, and Eco-mode™ efficiency-critical for battery-backed or thermally constrained consumer systems.
Availability
TPS56520PWPR is available at Aetrix Electronics and suitable for media processors, SoC core supplies, and high-density consumer power distribution requiring stable component supply, long-term lifecycle support, and full traceability.
Supply support for TPS56520PWPR 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 over 50 years of innovation in high-reliability power conversion solutions.
The TPS56x20 family-including TPS56520PWPR-is designed specifically for voltage-scaling power delivery to microprocessors and SoCs in consumer electronics, emphasizing integration, thermal efficiency, and digital configurability in compact packages.
FAQ
What is the maximum output current rating for the TPS56520PWPR?
The TPS56520PWPR is rated for 5A continuous output current under recommended operating conditions (TJ ≤ 125°C). Its valley-current limit is specified at 5.6A–9A depending on inductor value and thermal conditions, ensuring robust overload protection without derating in typical 2-layer PCB layouts with PowerPAD™ soldered to thermal plane.
Does the TPS56520PWPR support both I²C and resistor-divider output voltage configuration?
Yes, the TPS56520PWPR supports dual regulation modes: external resistor-divider feedback via VFB pin (0.6V reference) and internal VID programming via I²C interface (SDA/SCL/A0/A1). In I²C mode, VFB is internally connected to the DAC output; in resistor mode, SDA/SCL must be grounded and A0/A1 may float.
What package type and thermal characteristics does the TPS56520PWPR use?
The TPS56520PWPR uses the HTSSOP-20 (PWP) package with PowerPAD™ thermal pad (6.50 mm × 4.40 mm). Its junction-to-board thermal resistance (θJB) is 19.5°C/W, enabling 5A operation with ≤25°C temperature rise above ambient when the exposed pad is fully soldered to a 1-in² copper area on inner layer 2.
How does Eco-mode™ operate in the TPS56520PWPR, and what is its impact on light-load efficiency?
Eco-mode™ in the TPS56520PWPR disables PWM switching under light loads (<100mA), entering pulse-frequency modulation to maintain regulation with minimal quiescent current (920µA typical). This raises efficiency to >85% at 1mA output-critical for standby power compliance in ENERGY STAR-certified consumer devices.
Can the TPS56520PWPR be used without the I²C interface enabled?
Yes, the TPS56520PWPR operates fully in external regulation mode with only VFB, EN, PVIN, PGND, SW, VBST, PGOOD, and VREG5 connections. SDA, SCL, A0, and A1 must be grounded or left floating (A0/A1) per datasheet guidance; no firmware or host controller is required for basic 5A buck operation.
TPS56520PWPR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- SWIFT™, D-CAP2™, Eco-Mode™
- Package/Case:
- 20-PowerTSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable (Programmable)
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 17V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 1.87V
- Current - Output:
- 5A
- Frequency - Switching:
- 500kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-HTSSOP
TPS56520PWPR FAQ
1.How can I place an order for TPS56520PWPR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS56520PWPR 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 TPS56520PWPR reliable?
The price and inventory of TPS56520PWPR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS56520PWPR is usually 5 days.
3.What payment methods are accepted for TPS56520PWPR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS56520PWPR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS56520PWPR?
TPS56520PWPR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS56520PWPR 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 TPS56520PWPR?
For technical support, including TPS56520PWPR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS56520PWPR requirements.
6.How does Aetrix verify that TPS56520PWPR is sourced from the original manufacturer or authorized distributors?
All TPS56520PWPR 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 TPS56520PWPR meets industry standards.
7.What is the process for return or replacement of TPS56520PWPR?
All TPS56520PWPR units undergo pre-shipment inspection (PSI). If there is an issue with TPS56520PWPR, 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 TPS56520PWPR part is unused and in its original packaging.
Return procedure for TPS56520PWPR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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