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Texas Instruments TPS56520PWP
- Part No.:
- TPS56520PWP
- Manufacturer:
- Texas Instruments
- Package:
- 20-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPS56520PWP.pdf
- Description:
- IC REG BUCK ADJ 5A 20HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:313
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Product details
Overview
TPS56520 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 integrated 44mΩ/32mΩ high-side/low-side MOSFETs. It powers SoC core rails in media processors and high-density power distribution systems.
For engineers reviewing the TPS56520 datasheet, TPS56520 pinout, TPS56520 application, or TPS56520 equivalent, this page delivers verified specifications, validated pin functions, confirmed thermal performance (θJA = 36.8°C/W), real-world I²C voltage scaling capability (10mV steps), and accurate alternative part comparisons for embedded power design.
Technical Context
The TPS56520 employs adaptive on-time D-CAP2™ control to achieve fast transient response without external compensation components. Its dual-mode operation seamlessly transitions between PWM (full-load) and Eco-mode™ (light-load), maintaining >90% efficiency at 100mA while supporting monotonic pre-biased start-up.
It integrates a 5.5V linear regulator (VREG5) with ≥3.0µF bypass, I²C-compatible interface (400kHz, 2-bit address A0/A1), and cycle-by-cycle overcurrent protection with 5.6A–9A current limit. Thermal shutdown activates at 160°C with 23°C hysteresis, and undervoltage lockout triggers at 3.45V–4.2V on PVIN.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 17V - supports wide industrial and consumer DC bus inputs including 5V, 12V, and 15V rails. |
| Output Current | 5A continuous - sufficient for mid-tier SoC core supplies (e.g., ARM Cortex-A series, media processor VCORE). |
| Output Voltage Range | 0.6V to 1.87V in 10mV steps - enables precise VID-based voltage scaling for dynamic power management. |
| Switching Frequency | 500kHz typical - balances EMI, inductor size (optimized for 1.0µH–2.2µH), and efficiency across load range. |
| Feedback Accuracy | ±1% over temperature - ensures stable core voltage regulation critical for SoC timing margin and reliability. |
| RDS(on) (HS/LS) | 44mΩ / 32mΩ - low conduction loss enables >92% peak efficiency at 12VIN/1.1VOUT/5A. |
| Thermal Resistance | θJA = 36.8°C/W (PWP-20) - requires minimal PCB copper area for thermal relief in compact layouts. |
Pinout & Package
TPS56520 uses HTSSOP-20 (PWP) package with exposed PowerPAD™ thermal pad (7.8mm × 4.4mm body). The PowerPAD must be soldered to a GND plane for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN (1) | Enable input | Active-high logic control; threshold 1.85V H-level, 0.6V L-level - enables sequencing with upstream regulators or microcontrollers. |
| SDA (2), SCL (3) | I²C data/clock | 400kHz bidirectional interface for real-time VID programming, PGOOD monitoring, and Eco-mode control. |
| A0, A1 (4,5) | I²C address bits | Set device address (01101AA1A0) - allows up to four TPS56520s on same bus without conflict. |
| VIN (6) | 5.5V LDO input | Supplies internal 5.5V regulator (VREG5); bypass with ≥2.0µF ceramic capacitor to GND. |
| PVIN (7,8) | Main power input | Connects directly to high-side MOSFET drains; accepts 4.5V–17V input - separate from VIN for optimal noise isolation. |
| PGND (9,10) | Power ground return | Low-side MOSFET source return and current-sense reference - must be routed separately from AGND/SGND. |
| SW (11–13) | Switch node | Three parallel connections to internal HS/LS FETs - reduces trace inductance and improves EMI performance. |
| VBST (14) | Bootstrap supply | Drives high-side gate; requires 0.1µF ceramic cap between VBST and SW - internal diode charges from VREG5. |
| PGOOD (15) | Open-drain status | Asserts low when VOUT deviates >±10% from target - used for system power sequencing and fault reporting. |
| VREG5 (16) | 5.5V LDO output | Stable 5.5V supply for external circuitry; active only when EN = high - bypass with ≥2.0µF ceramic cap. |
| GND (17) | Signal ground | Reference for SS, VFB, and analog circuits - connect to PGND at single point near IC to minimize noise coupling. |
| SS (18) | Soft-start timing | Capacitor-to-GND sets ramp time (ISS = –6µA); enables monotonic start-up into pre-biased outputs. |
| VOUT (19) | Output voltage sense | Direct connection to output rail - used in internal VID mode; tied to VFB divider in external regulation mode. |
| VFB (20) | Feedback input | 0.6V reference input - connect to resistor divider from VOUT for external regulation; disabled in I²C mode. |
Key Features
| Feature | Design Value |
|---|---|
| D-CAP2™ Adaptive On-Time Control | Eliminates external compensation, enables <1µs transient response, and supports ultra-low-ESR ceramic capacitors. |
| I²C Programmable Voltage Scaling | 7-bit VID register adjusts VOUT from 0.6V to 1.87V in 10mV increments - enables dynamic voltage/frequency scaling (DVFS). |
| Eco-mode™ Light-Load Efficiency | Disables PWM at light loads and enters pulse-skipping mode - maintains >85% efficiency at 100mA output current. |
| Monotonic Pre-Biased Start-up | Soft-start capacitor (SS pin) ensures output ramps from 0V even when output is pre-charged - prevents reverse current flow. |
| Integrated Power Good & Thermal Protection | PGOOD open-drain output and 160°C thermal shutdown with 23°C hysteresis - provides fail-safe system-level power integrity. |
Applications
| Media Processor Core Supply | SoC Voltage Scaling Platform |
|---|---|
|
Use Scenario: Powers ARM-based media processors in digital TVs and set-top boxes requiring dynamic core voltage adjustment during video decode and UI rendering. IC Role / Device Role / Timing Role: Primary VCORE regulator delivering 5A at 0.8V–1.2V with sub-10µs load transient response. Use Value: I²C VID control enables real-time DVFS, reducing average SoC power by up to 30% versus fixed-voltage solutions. |
Use Scenario: Supplies configurable voltage to FPGA or ASIC development platforms where multiple VDD domains require independent tuning. IC Role / Device Role / Timing Role: Programmable buck converter with soft-start and PGOOD signaling for lab validation and prototype bring-up. Use Value: ±1% output accuracy and monotonic start-up eliminate boot failures on pre-biased rails during iterative design testing. |
| High-Density Server PMBus Node | Industrial Edge AI Module |
|
Use Scenario: Delivers 5A core power in space-constrained server mezzanine cards where multiple rails share I²C bus for centralized PMBus control. IC Role / Device Role / Timing Role: PMBus-compliant (I²C-compatible) voltage regulator with addressable A0/A1 pins and PGOOD status reporting. Use Value: Four-device I²C addressing and 400kHz clock support enable coordinated multi-rail sequencing without additional GPIO overhead. |
Use Scenario: Powers vision-processing SoCs in ruggedized edge AI cameras operating in extended temperature environments (–40°C to +85°C). IC Role / Device Role / Timing Role: Robust 5A buck converter with 150°C max junction temperature rating and UVLO hysteresis for brown-out resilience. Use Value: θJA = 36.8°C/W and integrated thermal shutdown ensure reliable operation under full load in sealed enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS56720 | 7A output, 30mΩ/24mΩ RDS(on), same PWP-20 package | Higher current capability for larger SoCs; identical pinout and feature set | Select when >5A peak load or lower conduction loss is required; no PCB change needed. |
| TPS56920 | 9A output, 26mΩ/19mΩ RDS(on), same PWP-20 package | Targeted at higher-power media processors and multi-core SoCs | Choose for future-proofing or designs with margin headroom; shares layout and firmware interface. |
Compared with TPS56520, the TPS56720 and TPS56920 offer higher output current and lower MOSFET losses while retaining identical I²C address scheme, thermal pad layout, and soft-start behavior - enabling scalable power design with minimal redesign effort.
Availability
TPS56520 is available at Aetrix Electronics and suitable for media processors, SoC core supplies, and high-density power distribution systems requiring stable component supply, long-term lifecycle support, and consistent parametric performance.
Supply support for TPS56520 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 and embedded processing technologies, with decades of expertise in power management ICs for industrial, automotive, and consumer markets.
The TPS56x20 family was designed specifically for voltage-scaling applications in advanced SoCs and media processors, integrating D-CAP2™ control, I²C programmability, and robust thermal management in compact HTSSOP packages.
FAQ
What is the maximum input voltage rating for the TPS56520?
The TPS56520 has an absolute maximum input voltage rating of 20V on PVIN and VIN pins. However, its recommended operating input voltage range is 4.5V to 17V. Exceeding 17V may trigger undervoltage lockout recovery or reduce reliability; sustained operation above 20V risks permanent damage per Absolute Maximum Ratings.
Does the TPS56520 support both I²C and resistor-divider feedback modes simultaneously?
No, the TPS56520 operates in either I²C (internal regulation) mode or resistor-divider (external regulation) mode - not both. In I²C mode, VFB is internally connected to the DAC output and must not be externally biased; in external mode, SDA/SCL/A0/A1 are grounded or floated, and VFB is used with a resistor divider from VOUT.
What is the purpose of the VREG5 pin on the TPS56520?
The VREG5 pin delivers a regulated 5.5V output (5.2V–5.7V) sourced from the VIN supply. It powers internal circuitry and can supply external bias for level shifters or monitoring ICs. It requires ≥2.0µF ceramic bypass capacitance to GND and is only active when EN is high.
How does the TPS56520 handle pre-biased output conditions during startup?
The TPS56520 implements monotonic pre-biased start-up via its SS pin. When a capacitor is connected from SS to GND, the internal –6µA current source charges it linearly, forcing the output to ramp from 0V regardless of initial VOUT voltage - preventing reverse current flow into the output capacitor or downstream circuitry.
Can the TPS56520 be used without connecting the PowerPAD™ thermal pad?
No. The exposed thermal pad on the TPS56520 PWP package is electrically connected to PGND and is mandatory for both thermal dissipation and electrical functionality. Omitting solder connection degrades θJA by >20°C/W and risks thermal shutdown or erratic operation under 5A load.
TPS56520PWP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- SWIFT™, D-CAP2™, Eco-Mode™
- Package/Case:
- 20-PowerTSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- 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
TPS56520PWP FAQ
1.How can I place an order for TPS56520PWP through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS56520PWP 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 TPS56520PWP reliable?
The price and inventory of TPS56520PWP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS56520PWP is usually 5 days.
3.What payment methods are accepted for TPS56520PWP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS56520PWP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS56520PWP?
TPS56520PWP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS56520PWP 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 TPS56520PWP?
For technical support, including TPS56520PWP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS56520PWP requirements.
6.How does Aetrix verify that TPS56520PWP is sourced from the original manufacturer or authorized distributors?
All TPS56520PWP 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 TPS56520PWP meets industry standards.
7.What is the process for return or replacement of TPS56520PWP?
All TPS56520PWP units undergo pre-shipment inspection (PSI). If there is an issue with TPS56520PWP, 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 TPS56520PWP part is unused and in its original packaging.
Return procedure for TPS56520PWP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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