My Inquiry
My Account
Texas Instruments TPS56C20PWPR
- Part No.:
- TPS56C20PWPR
- Manufacturer:
- Texas Instruments
- Package:
- 24-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPS56C20PWPR.pdf
- Description:
- IC REG BUCK ADJ 12A 24HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,814
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS56C20 from Texas Instruments is a 12A synchronous step-down DC-DC converter IC with D-CAP2™ control, 4.5V–17V input range, 0.6V–1.87V programmable output voltage (±1% accuracy), and integrated high-side/low-side MOSFETs (13mΩ/9mΩ @ VIN=12V). It powers SoC core rails in media processors and high-density power distribution systems.
For engineers reviewing the TPS56C20 datasheet, TPS56C20 pinout, TPS56C20 application, or TPS56C20 equivalent, key selection criteria include I²C-based voltage scaling (VID), Eco-mode™ light-load efficiency, monotonic pre-biased start-up, and thermal performance in HTSSOP-24 PowerPAD™ package.
Technical Context
The TPS56C20 implements adaptive on-time D-CAP2™ control, enabling fast transient response without external compensation while supporting seamless PWM-to-Eco-mode transition. Its dual regulation modes-external resistor divider (VFB) and internal I²C VID programming-allow flexible system-level voltage tuning during operation.
It integrates a 5.5V linear regulator (VREG5), open-drain PGOOD indicator, soft-start timing via SS pin, and robust protection including cycle-by-cycle overcurrent limiting, thermal shutdown (160°C), and UVLO (3.9V nominal with 0.56V hysteresis).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5V to 17V - supports wide industrial and consumer supply rails including 5V, 12V, and 15V bus systems. |
| Output Current | 12A continuous - enables single-chip core power for high-performance SoCs and media processors. |
| Output Voltage Accuracy | ±1% - ensures tight regulation for sensitive VCORE domains requiring stable voltage under dynamic load. |
| Switching Frequency | 500kHz typical - balances EMI, inductor size (optimized for 1.0µH–2.2µH), and efficiency across load range. |
| HS/LS RDS(on) | 13mΩ / 9mΩ - low conduction loss improves full-load efficiency and reduces thermal stress in compact layouts. |
| I²C Interface | Standard-mode (400kHz) with 2-bit address (A0/A1) - enables dynamic voltage scaling and real-time telemetry in multi-rail systems. |
| Thermal Shutdown | 160°C with 23°C hysteresis - protects against sustained overload while allowing recovery without manual reset. |
Pinout & Package
TPS56C20 uses an HTSSOP-24 package (7.80 mm × 4.40 mm) with exposed thermal pad (PowerPAD™) soldered to GND for enhanced thermal dissipation (θJA = 32.8°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN | Enable input | Active-high logic control; threshold at 1.85V (H), 0.6V (L); enables monotonic startup sequencing. |
| SDA / SCL / A0 / A1 | I²C interface and address pins | Supports dynamic VID programming and read-back of PGOOD status; A0/A1 set slave address (01101AA). |
| VIN | 5.5V LDO input | Powers internal 5.5V regulator (VREG5); bypass with ≥3.0µF ceramic capacitor to GND. |
| PVIN (7,8) | Main power input | Connects to high-side MOSFET drains; accepts 4.5V–17V input; requires local bulk capacitance. |
| PGND (9–12) | Power ground return | Low-impedance return path for low-side MOSFETs and current-sense comparator; must be separated from AGND. |
| SW (13–17) | Switch node | Five parallel connections to buck switch node; minimizes trace inductance and improves current sharing. |
| VBST | Bootstrap supply | Drives high-side gate; requires 0.1µF ceramic cap between VBST and SW; internally diode-fed from VREG5. |
| PGOOD | Open-drain power-good | Asserts high when VOUT is within ±15% of target; sinks up to 5.2mA; used for system enable sequencing. |
| VREG5 | 5.5V linear regulator output | Stable 5.5V supply for external circuitry; active only when EN is high; bypass with ≥3.0µF ceramic cap. |
| GND (21) | Signal ground | Reference for sensitive analog inputs (SS, VFB); must tie to PGND at single point near IC. |
| SS | Soft-start timing | Capacitor-to-GND sets ramp time; internal 6µA charge current enables monotonic pre-biased startup. |
| VOUT / VFB | Output sensing | VOUT connects directly to output rail; VFB receives feedback from resistor divider for external regulation mode. |
Key Features
| Feature | Design Value |
|---|---|
| D-CAP2™ Adaptive On-Time Control | Eliminates external compensation components and delivers sub-10µs transient response with ceramic output capacitors. |
| I²C-Based Voltage Scaling (VID) | Programs output from 0.6V to 1.87V in 10mV steps; supports dynamic core voltage adjustment in SoC applications. |
| Eco-mode™ Light-Load Efficiency | Disables PWM switching below threshold load, reducing quiescent current and maintaining >85% efficiency at 10mA. |
| Monotonic Pre-Biased Start-Up | Prevents output voltage undershoot during startup into pre-biased rails - critical for multi-rail SoC power sequencing. |
| Integrated 5.5V Linear Regulator (VREG5) | Provides clean, regulated supply for external logic or level-shifting circuits without requiring separate LDO. |
| Robust Protection Suite | Includes cycle-by-cycle overcurrent, thermal shutdown (160°C), UVLO, and output over/under-voltage detection. |
Applications
| Media Processor Core Supply | SoC Power Management Unit |
|---|---|
|
Use Scenario: Powers VCORE rail of digital TV SoCs requiring dynamic voltage scaling during video decode and UI rendering. IC Role / Device Role / Timing Role: Primary synchronous buck regulator delivering 12A at 0.85V–1.2V with I²C-programmable VID steps. Use Value: Enables energy-efficient operation via Eco-mode™ at idle and fast transient response during burst loads (e.g., frame buffer access). |
Use Scenario: Supplies core voltage to application processors in set-top boxes with strict sequencing and PGOOD coordination. IC Role / Device Role / Timing Role: Single-chip 12A buck converter with monotonic pre-biased start-up and open-drain PGOOD for system-level power sequencing. Use Value: Eliminates need for external soft-start controllers and discrete power-good monitoring circuitry. |
| High-Density Server Point-of-Load | Industrial Embedded Controller Rail |
|
Use Scenario: Delivers 1.0V/12A to FPGA or ASIC cores in space-constrained telecom line cards. IC Role / Device Role / Timing Role: High-current buck regulator with HTSSOP-24 PowerPAD™ package enabling >2A/mm² PCB power density. Use Value: Low RDS(on) (13mΩ/9mΩ) and optimized thermal resistance (θJA = 32.8°C/W) sustain full load in 60°C ambient without forced air. |
Use Scenario: Powers ARM Cortex-A series microprocessors in ruggedized industrial HMIs with wide input voltage variation. IC Role / Device Role / Timing Role: Robust DC-DC converter supporting 4.5V–17V input and operating from –40°C to +125°C junction temperature. Use Value: Integrated UVLO (3.9V), thermal shutdown (160°C), and ±1% output accuracy ensure reliable operation across harsh environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS56920 | 9A output, HTSSOP-20, higher RDS(on) (26mΩ/19mΩ), same I²C interface and D-CAP2™ control. | Lower current capability; suitable for mid-tier SoCs or where board area is constrained. | Select when 9A suffices and footprint reduction is prioritized over peak current headroom. |
| TPS56720 | 7A output, HTSSOP-20, RDS(on) = 30mΩ/24mΩ, identical feature set and pin-compatible package footprint. | Targeted at cost-sensitive consumer electronics with lower power budgets (e.g., Blu-ray players). | Choose for BOM cost optimization where 7A meets system requirements and thermal margin allows. |
Compared with TPS56920 and TPS56720, the TPS56C20 provides highest output current (12A) and lowest MOSFET losses in the TPS56x20 family, making it optimal for thermally demanding, high-performance core rail applications where headroom and efficiency are critical.
Availability
TPS56C20 is available at Aetrix Electronics and suitable for media processors, SoC power management units, and high-density server point-of-load applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TPS56C20 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 TPS56C20 belongs to TI's SWIFT™ family of high-current synchronous buck regulators, designed specifically for powering advanced SoCs and media processors with dynamic voltage scaling and minimal external components.
FAQ
What is the maximum continuous output current supported by the TPS56C20?
The TPS56C20 supports 12A continuous output current under recommended operating conditions (TJ ≤ 125°C, proper PCB layout with thermal pad soldered). Its current limit is programmable from 40% to 160% of rated output, with typical valley current limit at 13.2A–20A depending on inductor value and thermal conditions. The TPS56C20 datasheet specifies 12A as the guaranteed continuous rating.
Does the TPS56C20 require external compensation components?
No, the TPS56C20 uses D-CAP2™ adaptive on-time control architecture, which eliminates the need for external compensation networks. This simplifies design, reduces BOM count, and maintains stability with both low-ESR ceramic and polymer output capacitors - a key advantage over traditional voltage-mode or current-mode controllers.
How does the TPS56C20 handle startup into a pre-biased output rail?
The TPS56C20 implements monotonic pre-biased start-up: its control logic prevents reverse current flow and ensures the output voltage ramps cleanly from the pre-bias level without undershoot or oscillation. This behavior is enabled by internal circuitry that monitors VFB and adjusts gate drive timing - critical for safe powering of SoCs with multiple interdependent rails.
Can the TPS56C20 operate without using the I²C interface?
Yes, the TPS56C20 supports standalone operation using external resistor feedback via the VFB pin. In this mode, SDA/SCL/A0/A1 pins may be grounded or left floating, and output voltage is set by a resistor divider from VOUT to GND. The I²C interface is optional and used only when dynamic voltage scaling or telemetry is required.
What thermal management features does the TPS56C20 include?
The TPS56C20 integrates thermal shutdown at 160°C with 23°C hysteresis, junction temperature monitoring, and a thermally enhanced HTSSOP-24 PowerPAD™ package. Its θJA is 32.8°C/W with standard 2-layer PCB layout, and θJCbot is 0.8°C/W - enabling efficient heat transfer to the PCB ground plane when the exposed pad is properly soldered and connected to a thermal copper pour.
TPS56C20PWPR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- SWIFT™, D-CAP2™, Eco-Mode™
- Package/Case:
- 24-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:
- 12A
- Frequency - Switching:
- 500kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-HTSSOP
TPS56C20PWPR FAQ
1.How can I place an order for TPS56C20PWPR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS56C20PWPR 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 TPS56C20PWPR reliable?
The price and inventory of TPS56C20PWPR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS56C20PWPR is usually 5 days.
3.What payment methods are accepted for TPS56C20PWPR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS56C20PWPR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS56C20PWPR?
TPS56C20PWPR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS56C20PWPR 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 TPS56C20PWPR?
For technical support, including TPS56C20PWPR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS56C20PWPR requirements.
6.How does Aetrix verify that TPS56C20PWPR is sourced from the original manufacturer or authorized distributors?
All TPS56C20PWPR 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 TPS56C20PWPR meets industry standards.
7.What is the process for return or replacement of TPS56C20PWPR?
All TPS56C20PWPR units undergo pre-shipment inspection (PSI). If there is an issue with TPS56C20PWPR, 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 TPS56C20PWPR part is unused and in its original packaging.
Return procedure for TPS56C20PWPR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS56C20PWPR Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
