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Texas Instruments TPS65580PWP
- Part No.:
- TPS65580PWP
- Manufacturer:
- Texas Instruments
- Package:
- 20-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPS65580PWP.pdf
- Description:
- IC REG BUCK ADJ TRPL 20HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:265
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Product details
Overview
TPS65580PWP from Texas Instruments is a triple synchronous step-down DC/DC converter with 1.5A/2.5A/1.5A output capability per channel, operating from 4.5V to 18V input and delivering adjustable outputs from 0.76V to 7.0V. It integrates high-side/low-side MOSFETs (250mΩ/230mΩ for CH1 & CH3; 160mΩ/130mΩ for CH2), uses Advanced D-CAP2™ control for fast transient response without external compensation, and targets point-of-load regulation in digital TV, STB, and gaming console power supplies.
For engineers reviewing the TPS65580PWP datasheet, TPS65580PWP pinout, TPS65580PWP application, or TPS65580PWP equivalent, key selection criteria include its 700 kHz fixed switching frequency, non-sinking pre-biased soft-start, cycle-by-cycle over-current protection with thermally compensated RDS(on), and integrated PowerGood monitoring across all three outputs.
Technical Context
The TPS65580PWP implements three independent Advanced D-CAP2™ control loops-each combining fixed-frequency PWM with internal compensation, enabling stable operation with ceramic or low-ESR polymer capacitors. Its architecture eliminates need for external loop compensation components while maintaining robustness against load transients.
Each channel features adaptive gate drivers with integrated boost PMOS switches, loss-less low-side RDS(on) current sensing, and dedicated protection circuitry including OVP (120% VFB), UVP (63–73% VFB), thermal shutdown (155°C), and hiccup-mode overload recovery-all coordinated via shared logic and reference blocks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 18 V - supports wide industrial and consumer DC bus inputs including 5V, 12V, and 15V rails. |
| Output Current Capability | CH1: 1.5 A, CH2: 2.5 A, CH3: 1.5 A - enables asymmetric multi-rail power delivery for SoC core, I/O, and memory domains. |
| Switching Frequency | 700 kHz - balances efficiency, size, and EMI; stable across input voltage and load conditions per typical characteristics. |
| Feedback Reference Accuracy | ±12 mV (752–776 mV) at 25°C - ensures tight output voltage regulation without trimming resistors. |
| Soft-Start Time | Fixed 1.2 ms - prevents inrush current and ensures controlled ramp-up of all three outputs simultaneously. |
| Thermal Shutdown Threshold | 155°C with 30°C hysteresis - protects silicon integrity during sustained overload or poor PCB thermal design. |
| PowerGood Delay | 1.5 ms after soft-start completion - avoids false PG assertion during startup transients; 2 µs response on fault. |
Pinout & Package
The TPS65580PWP is housed in a thermally enhanced 20-pin HTSSOP (PWP) package with exposed PowerPAD thermal pad soldered to GND plane for optimal heat dissipation (θJA = 40.0°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pins 1,2) | Input power rail | Supplies all three channels and powers internal 5.5V LDO (VREG5); requires local 10µF+ ceramic decoupling. |
| VBST1/2/3 (Pins 3,14,20) | Bootstrap supply for high-side FET gates | Each connects to SWx via 0.1µF ceramic capacitor; internally diode-clamped to VREG5. |
| SW1/2/3 (Pins 4,15,19) | Switch node | Connects high-side drain and low-side source; feeds current-sense comparator and external LC filter. |
| PGND1/2/3 (Pins 5,16,18) | Low-side FET return path | Separate ground returns per channel minimize cross-talk; tied to PowerPAD for thermal conduction. |
| VREG5 (Pin 6) | 5.5V linear regulator output | Powers internal logic and VBST circuits; bypassed with ≥1.0µF ceramic capacitor to GND. |
| PG (Pin 7) | Open-drain PowerGood indicator | Asserts high only when all three VFBx voltages are within ±16% of target; pulled down by 50–130Ω internal resistor. |
| EN1/2/3 (Pins 8,13,17) | Independent enable inputs | Active-high logic (2.0V threshold); each controls corresponding channel startup sequence and soft-start initiation. |
| VFB1/2/3 (Pins 9,11,12) | Feedback inputs | Resistor-divider nodes for output voltage setting; input bias current <100nA enables high-value dividers. |
| GND (Pin 10) | Signal ground reference | Star-point connection for all VFBx returns; isolated from PGNDx to reduce noise coupling into feedback path. |
| Thermal Pad (Backside) | Thermal and electrical ground | Must be soldered to large copper pour connected to system GND; primary path for heat removal. |
Key Features
| Feature | Design Value |
|---|---|
| Advanced D-CAP2™ Control | Enables zero-external-compensation design with fast transient response (<10 µs) and stability across ceramic and POSCAP/SP-CAP output capacitors. |
| Non-Sinking Pre-Biased Soft Start | Prevents reverse current flow during startup when outputs are pre-charged; critical for hot-swap and multi-rail sequencing applications. |
| Loss-Less Low-Side RDS(on) Current Sensing | Eliminates sense resistor power loss and layout sensitivity; accuracy maintained via thermal compensation (4000 ppm/°C). |
| Triple Independent Protection | Per-channel OCP, OVP, UVP plus global thermal shutdown and UVLO - ensures safe operation under fault conditions without latch-up. |
| Integrated 5.5V Linear Regulator | Provides clean, regulated supply for internal logic and bootstrap circuits; delivers up to 20 mA with 5% initial accuracy. |
Applications
| Digital Television Power Supply | Networking Home Terminal |
|---|---|
Use Scenario: Powers main SoC (1.2V), DDR memory interface (1.5V), and HDMI PHY (3.3V) from a single 12V DC input in compact TV chassis. IC Role / Device Role / Timing Role: Triple-output buck controller providing tightly regulated, sequenced, and monitored rails for video processing subsystem. Use Value: Reduces BOM count by eliminating three discrete converters; D-CAP2™ control maintains <±1% output deviation during dynamic video frame load changes. | Use Scenario: Supplies CPU core (1.2V), PCIe interface (3.3V), and USB PHY (1.5V) in residential gateway devices with space-constrained PCB layouts. IC Role / Device Role / Timing Role: Centralized multi-rail PMIC enabling simultaneous power-up and coordinated PowerGood signaling to host processor. Use Value: Fixed 700 kHz switching allows predictable EMI filtering; non-sinking soft-start prevents brown-out during cold boot with pre-biased auxiliary rails. |
| Digital Set Top Box (STB) | Gaming Console Mainboard |
Use Scenario: Delivers 1.2V for ARM-based media processor, 3.3V for tuner and demodulator ICs, and 1.5V for DDR2 memory in energy-efficient STB designs. IC Role / Device Role / Timing Role: Primary DC/DC regulator managing power sequencing, efficiency optimization, and fault reporting via PG pin. Use Value: High-efficiency MOSFETs (160mΩ HS / 130mΩ LS on CH2) achieve >90% peak efficiency at 1.2V/2.5A, reducing thermal load in sealed enclosures. | Use Scenario: Generates 1.2V GPU core, 3.3V I/O, and 1.5V memory rails from 12V ATX-derived supply in next-gen game consoles. IC Role / Device Role / Timing Role: Multi-phase-capable triple buck converter supporting dynamic voltage scaling and rapid load-step response during graphics-intensive scenes. Use Value: Cycle-by-cycle OCP with hiccup mode prevents permanent damage during GPU overclocking or transient overloads, extending system lifetime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar triple-output buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS543320RTWR | Single 3A output with external PMBus interface; no integrated triple-channel architecture or D-CAP2™ control. | Requires three separate ICs or complex multiphase configuration to match TPS65580PWP's integrated triple-rail capability. | Choose when digital telemetry, programmability, or higher per-rail current (>2.5A) is required over integration and simplicity. |
| MP2451DT-LF-Z | Single-channel 0.6A buck; lacks multi-output integration, PowerGood coordination, or thermal/hiccup protection. | Not functionally equivalent - would require three discrete units plus external sequencing logic and monitoring circuitry. | Only suitable for cost-sensitive, low-power applications where triple-rail integration and protection are not mandatory. |
Compared with TPS543320RTWR and MP2451DT-LF-Z, the TPS65580PWP delivers true single-package triple-rail power management with synchronized soft-start, unified PG signaling, and hardware-based protection - reducing design complexity, PCB area, and qualification effort for consumer multimedia systems.
Availability
TPS65580PWP is available at Aetrix Electronics and suitable for digital television, set-top box, and gaming console power supply designs requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for TPS65580PWP 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 decades of expertise in high-efficiency DC/DC conversion.
The TPS65580PWP belongs to TI's advanced D-CAP2™ synchronous buck converter product line, designed specifically for cost-sensitive, space-constrained consumer electronics requiring fast transient response and minimal external components.
FAQ
What is the maximum input voltage rating for the TPS65580PWP?
The absolute maximum input voltage (VIN) for the TPS65580PWP is 20 V, but the recommended operating range is strictly 4.5 V to 18 V. Exceeding 18 V may trigger UVLO or cause reliability degradation over time. The device includes internal clamping and protection circuitry to withstand short-duration transients up to 20 V, as specified in the Absolute Maximum Ratings table of the SLVSC29B datasheet.
Does the TPS65580PWP support independent enable and soft-start for each channel?
Yes, the TPS65580PWP provides three independent EN pins (EN1, EN2, EN3) and a dedicated 1.2 ms internal soft-start timer per channel. Each channel ramps its output voltage independently upon assertion of its respective EN signal, and the PowerGood (PG) pin asserts only after all three outputs reach regulation within ±16% tolerance - enabling flexible power sequencing in complex SoC systems.
How does the TPS65580PWP implement current limiting without a sense resistor?
The TPS65580PWP uses loss-less low-side RDS(on) current sensing: it monitors the voltage drop across the integrated low-side MOSFET during conduction. This voltage is proportional to load current and FET resistance. To maintain accuracy across temperature, the sensing circuit applies thermal compensation (4000 ppm/°C), ensuring stable over-current trip points from –40°C to 85°C ambient without external components.
Can the TPS65580PWP operate with ceramic output capacitors?
Yes, the TPS65580PWP is explicitly optimized for ceramic output capacitors - its Advanced D-CAP2™ control architecture remains stable even with ultra-low-ESR ceramics (e.g., X5R/X7R 22–68 µF). The datasheet confirms compatibility with both ceramic and polymer capacitors, eliminating need for tantalum or electrolytic types and reducing board area and failure risk.
What thermal management considerations apply to the TPS65580PWP package?
The TPS65580PWP uses a 20-pin HTSSOP (PWP) package with an exposed thermal pad that must be soldered to a GND-connected copper pour. Per TI's thermal metrics, θJA = 40.0°C/W assumes 2-in² 2-oz copper; insufficient pad area or poor solder voiding increases junction temperature. Thermal shutdown activates at 155°C with 30°C hysteresis, so layout must ensure ≤110°C max junction under full load per recommended operating conditions.
TPS65580PWP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- D-CAP2™
- Package/Case:
- 20-PowerTSSOP (0.173", 4.40mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 3
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 18V
- Voltage - Output (Min/Fixed):
- 0.764V
- Voltage - Output (Max):
- 7V
- Current - Output:
- 1.5A, 2.5A
- Frequency - Switching:
- 700kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-HTSSOP
TPS65580PWP FAQ
1.How can I place an order for TPS65580PWP through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS65580PWP 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 TPS65580PWP reliable?
The price and inventory of TPS65580PWP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS65580PWP is usually 5 days.
3.What payment methods are accepted for TPS65580PWP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS65580PWP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS65580PWP?
TPS65580PWP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS65580PWP 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 TPS65580PWP?
For technical support, including TPS65580PWP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS65580PWP requirements.
6.How does Aetrix verify that TPS65580PWP is sourced from the original manufacturer or authorized distributors?
All TPS65580PWP 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 TPS65580PWP meets industry standards.
7.What is the process for return or replacement of TPS65580PWP?
All TPS65580PWP units undergo pre-shipment inspection (PSI). If there is an issue with TPS65580PWP, 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 TPS65580PWP part is unused and in its original packaging.
Return procedure for TPS65580PWP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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