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Texas Instruments TPS56920PWPR
- Part No.:
- TPS56920PWPR
- Manufacturer:
- Texas Instruments
- Package:
- 20-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPS56920PWPR.pdf
- Description:
- IC REG BUCK ADJ 9A 20HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:145
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Product details
Overview
TPS56920 from Texas Instruments is a 9A 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 ±1% output voltage accuracy. It integrates high-side (26mΩ) and low-side (19mΩ) MOSFETs in an HTSSOP-20 PowerPAD™ package and targets core voltage regulation for SoC processors.
For engineers reviewing the TPS56920 datasheet, TPS56920 pinout, TPS56920 application, or TPS56920 equivalent, key selection criteria include I²C-programmable VID scaling, Eco-mode™ light-load efficiency, monotonic pre-biased start-up, and thermal shutdown at 160°C - all critical for media processor power delivery in space-constrained consumer electronics.
Technical Context
The TPS56920 employs adaptive on-time D-CAP2™ control to deliver fast transient response without external compensation components. Its dual-mode operation seamlessly transitions between PWM (full-load) and Eco-mode™ (light-load), maintaining high efficiency across 0–9A output current while supporting ceramic, POSCAP, and SP-CAP output capacitors.
It features integrated 5.5V linear regulator (VREG5), open-drain PGOOD with 85%/110% thresholds, and programmable soft-start via external capacitor on SS pin. The device supports I²C address configuration (A0/A1), VID voltage scaling (0.6V–1.87V in 10mV steps), and hiccup-mode overcurrent protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 17V - supports wide-input industrial and consumer power rails including 12V bus systems. |
| Output Current | 9A continuous - sufficient for mid-tier SoC core voltage domains (e.g., ARM Cortex-A7x, video DSPs). |
| Output Voltage Accuracy | ±1% - ensures tight regulation for sensitive processor VCORE, minimizing margining overhead in system design. |
| Switching Frequency | 500kHz typical - balances EMI performance, inductor size (optimized for 1.0µH–2.2µH), and efficiency. |
| HS/LS RDS(on) | 26mΩ / 19mΩ - enables high-efficiency operation at 9A with low conduction loss and thermal rise. |
| I²C Interface | Standard-mode (400kHz) compatible - allows dynamic voltage scaling (DVS) and real-time telemetry in host-controlled systems. |
| Thermal Shutdown | 160°C with 23°C hysteresis - provides robust overtemperature protection while enabling sustained high-power operation. |
Pinout & Package
TPS56920 is housed in a 20-pin HTSSOP (PWP) package with exposed thermal PowerPAD™ (6.50 mm × 4.40 mm), requiring soldered connection to PCB ground plane for thermal management and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN | Enable input | Active-high logic control; 1.85V threshold ensures noise-immune startup sequencing. |
| SDA / SCL | I²C data/clock interface | Supports bidirectional VID programming and status readback without additional level shifters. |
| A0 / A1 | I²C address select | Configures one of four possible slave addresses (01101xx) for multi-device bus topology. |
| VIN | 5.5V LDO input | Powers internal circuitry; decoupled by ≥2.0µF ceramic capacitor to VREG5 output. |
| PVIN (7,8) | Main power input | Connects directly to high-side MOSFET drains; requires local 10µF+ bulk capacitance. |
| PGND (9,10) | Power ground return | Low-impedance path for low-side FET current; must be routed separately from signal GND. |
| SW (11–13) | Switch node | Three parallel pins reduce parasitic inductance and thermal stress during high di/dt switching. |
| VBST | Bootstrap supply | Charged via internal diode from VREG5; requires 0.1µF ceramic capacitor to SW for gate drive. |
| PGOOD | Open-drain power-good | Signals valid regulation (85%–110% VOUT); pulled up externally to enable system reset or sequencing. |
| VREG5 | 5.5V linear regulator output | Supplies internal logic and bootstrap circuitry; bypassed with ≥2.0µF ceramic to GND. |
| GND | Signal ground reference | Reference point for VFB, SS, and analog circuits; connected to PGND only at single-point star ground. |
| SS | Soft-start timing | Capacitor-to-GND sets monotonic ramp time; prevents inrush current during pre-biased start-up. |
| VOUT | Output voltage sense | Direct connection to output rail for internal regulation mode; used with VFB in external mode. |
| VFB | Feedback input | Accepts resistor-divider output (0.6V reference); enables precise external voltage setting independent of I²C. |
Key Features
| Feature | Design Value |
|---|---|
| D-CAP2™ adaptive on-time control | Eliminates need for external compensation network while supporting ultra-low-ESR ceramic capacitors and delivering <10µs load transient response. |
| I²C programmable VID scaling | Enables dynamic voltage/frequency scaling (DVFS) with 10mV resolution across 0.6V–1.87V, reducing SoC power consumption during idle states. |
| Eco-mode™ light-load efficiency | Disables pulse skipping below ~100mA, maintaining >85% efficiency at 10mA load - critical for always-on subsystems. |
| Monotonic pre-biased start-up | Guarantees controlled voltage ramp even when output is pre-charged, preventing reverse current flow into powered-down downstream circuits. |
| Integrated 5.5V LDO (VREG5) | Reduces BOM count by powering internal logic and bootstrap circuitry - eliminates need for external bias rail. |
| Hiccup-mode overcurrent protection | Shuts down and auto-retries on sustained overload, protecting MOSFETs and PCB traces without latch-up or manual reset. |
Applications
| Digital TV SoC Core Supply | Set-Top Box Media Processor |
|---|---|
Use Scenario: Powers ARM-based application processor (e.g., Amlogic S905X) requiring dynamically scaled VCORE from 0.8V to 1.2V during video decode and UI rendering. IC Role / Device Role / Timing Role: Primary synchronous buck regulator with I²C-controlled VID scaling and PGOOD sequencing for SoC boot and runtime voltage adjustment. Use Value: Enables 20% reduction in active power vs fixed-voltage solution through precise DVFS, while D-CAP2™ maintains <50mV undershoot under 6A step load. |
Use Scenario: Supplies core voltage to HEVC video decoder ASIC in cable/satellite STB with strict thermal limits in compact metal enclosure. IC Role / Device Role / Timing Role: High-current, thermally optimized DC-DC converter with PowerPAD™ thermal pad and 160°C thermal shutdown. Use Value: Delivers 9A at 1.0V with <40°C junction rise (θJA = 36.8°C/W), eliminating need for forced air cooling in fanless designs. |
| High-Density Industrial Compute Module | Automotive Infotainment Application Processor |
Use Scenario: Powers quad-core Cortex-A53 in ruggedized edge AI gateway where board space is constrained and input voltage varies from 9V–16V (12V nominal). IC Role / Device Role / Timing Role: Input-flexible, compact buck regulator with UVLO (3.9V) and wide VIN range ensuring reliable operation across automotive battery transients. Use Value: Maintains regulation during cold-crank (6.5V min) and load-dump (18V max) events due to 17V absolute max rating and robust internal FETs. |
Use Scenario: Supplies VCORE to Qualcomm SA8155P in automotive infotainment head unit requiring AEC-Q200 alignment and functional safety awareness. IC Role / Device Role / Timing Role: Safety-aware power stage with open-drain PGOOD, thermal warning (130°C), and hiccup-mode fault recovery. Use Value: Provides deterministic fault signaling and automatic recovery without system-level watchdog intervention, easing ASIL-B compliance efforts. |
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, higher RDS(on) (30mΩ/24mΩ), identical pinout and feature set. | Suitable for lower-current SoCs (e.g., single-core Cortex-A53) with reduced thermal budget. | Select when 7A peak load suffices and cost optimization is prioritized over headroom. |
| TPS56520PWPR | 5A output rating, highest RDS(on) (44mΩ/32mΩ), same package and control architecture. | Targeted at entry-level media processors or auxiliary rails where footprint and integration outweigh current demand. | Choose for space-constrained designs needing full feature compatibility but ≤5A load capability. |
Compared with TPS56920, TPS56720 offers 22% lower current capacity with identical I²C/D-CAP2™ functionality, while TPS56520 further reduces output capability by 44% - both retain pin-for-pin compatibility and thermal design reuse, enabling scalable power architecture across product tiers.
Availability
TPS56920PWPR is available at Aetrix Electronics and suitable for digital TV power supplies, set-top box media processors, and high-density compute modules requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TPS56920PWPR 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 expertise in high-efficiency DC-DC conversion.
The TPS56x20 family was designed specifically for dynamic core voltage regulation in media processors and SoCs, emphasizing I²C programmability, fast transient response, and thermal robustness in consumer and industrial applications.
FAQ
What is the maximum output current supported by the TPS56920PWPR?
The TPS56920PWPR supports up to 9A continuous output current under recommended operating conditions (TJ ≤ 125°C). Its current limit is programmable from 40% to 160% of nominal rating, with typical overcurrent trip at 10A–15A depending on inductor value and thermal conditions. Derating is required above 85°C ambient.
Does the TPS56920PWPR support both I²C and resistor-divider feedback modes?
Yes, the TPS56920PWPR supports dual feedback configurations: external regulation mode using VFB and resistor divider (0.6V reference), and internal regulation mode using I²C VID commands (0.6V–1.87V in 10mV steps). VOUT and VFB pins serve distinct roles depending on selected mode per TI SLVSCB6E datasheet Section 8.1.
What package type and thermal characteristics does the TPS56920PWPR use?
The TPS56920PWPR uses the HTSSOP-20 (PWP) package with exposed PowerPAD™ thermal pad (6.50 mm × 4.40 mm). Its junction-to-ambient thermal resistance (θJA) is 36.8°C/W with standard 2-layer JEDEC board layout, and junction-to-board (θJB) is 19.5°C/W - requiring solid thermal vias and copper pour under the PowerPAD™ for optimal performance.
Can the TPS56920PWPR operate with a 1.0µH inductor?
Yes, the TPS56920PWPR is explicitly optimized for 1.0µH to 2.2µH inductors per datasheet Section 1. Features. A 1.0µH shielded power inductor (e.g., 20% tolerance, ≥12A saturation current) delivers optimal trade-off between transient response, ripple, and board area - validated in TI's TPS56920EVM-692 reference design.
How does the Eco-mode™ function affect light-load efficiency in the TPS56920PWPR?
Eco-mode™ in the TPS56920PWPR disables pulse skipping below ~100mA load, enabling discontinuous conduction mode (DCM) operation that reduces switching losses. This achieves >85% efficiency at 10mA output - significantly higher than forced-PWM mode - while maintaining output voltage regulation within ±1% tolerance.
TPS56920PWPR 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:
- 9A
- Frequency - Switching:
- 500kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-HTSSOP
TPS56920PWPR FAQ
1.How can I place an order for TPS56920PWPR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS56920PWPR 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 TPS56920PWPR reliable?
The price and inventory of TPS56920PWPR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS56920PWPR is usually 5 days.
3.What payment methods are accepted for TPS56920PWPR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS56920PWPR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS56920PWPR?
TPS56920PWPR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS56920PWPR 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 TPS56920PWPR?
For technical support, including TPS56920PWPR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS56920PWPR requirements.
6.How does Aetrix verify that TPS56920PWPR is sourced from the original manufacturer or authorized distributors?
All TPS56920PWPR 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 TPS56920PWPR meets industry standards.
7.What is the process for return or replacement of TPS56920PWPR?
All TPS56920PWPR units undergo pre-shipment inspection (PSI). If there is an issue with TPS56920PWPR, 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 TPS56920PWPR part is unused and in its original packaging.
Return procedure for TPS56920PWPR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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