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Texas Instruments TPS54295PWP
- Part No.:
- TPS54295PWP
- Manufacturer:
- Texas Instruments
- Package:
- 16-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPS54295PWP.pdf
- Description:
- IC REG BUCK ADJ 2A DL 16HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,544
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Product details
Overview
TPS54295PWP from Texas Instruments is a dual-channel synchronous step-down DC/DC converter with integrated 150 mΩ high-side and 100 mΩ low-side N-channel MOSFETs per channel, supporting 4.5–18 V input and 0.76–7 V output per channel, delivering up to 2 A per channel at 700 kHz switching frequency for point-of-load regulation in digital TV and STB power supplies.
For engineers reviewing the TPS54295PWP datasheet, TPS54295PWP pinout, TPS54295PWP application, or TPS54295PWP equivalent, this page delivers verified electrical parameters, HTSSOP-16 package mapping, D-CAP2 control behavior, Eco-mode light-load efficiency, and two validated alternative parts - all confirmed against TI's SLVSB01D revision D datasheet.
Technical Context
The TPS54295PWP implements adaptive on-time D-CAP2 control with no external compensation required, enabling fast transient response and stable operation with ceramic or low-ESR polymer output capacitors. Its dual independent channels share a common GND and VREG5 LDO but operate with separate EN, SS, VFB, SW, and PGND pins.
Each channel features lossless low-side rDS(ON) current sensing with thermal compensation (4000 ppm/°C), cycle-by-cycle overcurrent protection, and auto-skip Eco-mode that transitions seamlessly from PWM to pulse-skipping below ~300 mA load. The 700 kHz pseudo-fixed frequency is derived from VIN/VOUT ratio, not an internal oscillator.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 18 V - supports wide-range industrial and consumer DC inputs including 5 V, 12 V, and 15 V rails. |
| Output Voltage Range | 0.76 V to 7 V per channel - programmable via resistor divider on VFBx, enabling core logic (1.2 V), I/O (3.3 V), and analog (5 V) rails. |
| Max Output Current | 2 A per channel - sustained continuous output with thermal derating above 85°C ambient in PWP package. |
| Switching Frequency | 700 kHz nominal - fixed-frequency-like operation enables predictable EMI filtering and inductor selection. |
| High-Side rDS(ON) | 150 mΩ - minimizes conduction loss at high duty cycles (e.g., 3.3 V out from 12 V in). |
| Low-Side rDS(ON) | 100 mΩ - enables efficient synchronous rectification and lossless current sensing without sense resistor. |
| Feedback Reference | 765 mV ±7 mV - high-accuracy reference ensures tight output regulation across temperature and line/load conditions. |
| Soft-Start Control | Adjustable via external capacitor on SSx - sets monotonic ramp time; supports non-sinking prebiased startup. |
Pinout & Package
TPS54295PWP is housed in a thermally enhanced 16-pin HTSSOP (PWP) package measuring 5.00 mm × 4.40 mm with exposed thermal pad soldered to PCB ground for optimal thermal performance (RθJA = 47.5°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN1 / PIN 1 | Main power input for Channel 1 | Supplies high-side FET drain and powers internal 5.5-V VREG5 LDO; must be decoupled near pin. |
| VIN2 / PIN 16 | Main power input for Channel 2 | Independent input rail; allows dual-input configurations or shared input with local decoupling. |
| SW1 / PIN 3 | Channel 1 switch node | Connects to external inductor; carries high di/dt; requires short, low-inductance layout to SW1 and PGND1. |
| SW2 / PIN 14 | Channel 2 switch node | Independent high-frequency switching node; layout isolation from SW1 prevents crosstalk. |
| PGND1 / PIN 4 | Channel 1 power ground return | Return path for low-side FET and current sense; must connect directly to thermal pad and local output cap ground. |
| PGND2 / PIN 13 | Channel 2 power ground return | Separate return minimizes shared impedance between channels; avoids load transient coupling. |
| VFB1 / PIN 7 | Channel 1 feedback input | Monitors output voltage via resistor divider; 765-mV reference sets regulated output (e.g., R1/R2 = 3.3 V → 3.3/0.765 − 1 ≈ 3.33). |
| VFB2 / PIN 10 | Channel 2 feedback input | Independent regulation loop; enables different output voltages per channel without interaction. |
| EN1 / PIN 5 | Channel 1 enable input | Active-high logic control (2 V threshold); allows sequencing or independent channel shutdown. |
| EN2 / PIN 12 | Channel 2 enable input | Independent enable permits staggered startup or fault-isolated channel disable. |
| SS1 / PIN 6 | Channel 1 soft-start capacitor | 8 µA constant-current charge source; 100 nF yields ~10 ms ramp (T = 8×10⁻⁶ × C / 0.765). |
| SS2 / PIN 11 | Channel 2 soft-start capacitor | Independent timing control enables asymmetric startup sequences for system-level power sequencing. |
| VBST1 / PIN 2 | Channel 1 bootstrap supply | Drives high-side gate; requires 0.1 µF ceramic capacitor between VBST1 and SW1 for proper bootstrapping. |
| VBST2 / PIN 15 | Channel 2 bootstrap supply | Independent bootstrap circuit eliminates cross-channel gate drive interference during startup or transients. |
| VREG5 / PIN 9 | Integrated 5.5-V LDO output | Powered from VIN1; supplies internal circuitry and can power external bias rails; requires ≥1 µF ceramic bypass to GND. |
| GND / PIN 8 | Signal ground reference | Low-noise analog reference for SSx and VFBx; must tie to thermal pad at single-point star ground. |
Key Features
| Feature | Design Value |
|---|---|
| D-CAP2™ Control Mode | Eliminates external compensation components while maintaining stability with ceramic or POSCAP output capacitors - reduces BOM count and layout sensitivity. |
| Auto-Skip Eco-mode™ | Boosts light-load efficiency by >15% at 10 mA vs forced-PWM; extends battery life in standby or low-power states without sacrificing transient response. |
| Lossless Low-Side Current Sensing | Uses rDS(ON) of integrated low-side FET instead of shunt resistor - saves board space, eliminates power loss, and avoids sense resistor tolerance errors. |
| Non-Sinking Prebiased Soft Start | Prevents reverse current flow into precharged outputs during startup - critical for hot-swap or multi-rail systems where one rail powers up before others. |
| Comprehensive Protection Suite | Includes cycle-by-cycle OCP, OVP/UVP (120%/68% thresholds), UVLO on VREG5, and thermal shutdown (155°C) - enables robust operation without external supervision circuits. |
| Adaptive Gate Drivers | Integrates boost PMOS switch and optimized drive strength - ensures full enhancement of high-side FET across input range and temperature. |
Applications
| Digital TV Power Supply | Networking Home Terminal |
|---|---|
Use Scenario: Dual-rail power for SoC (1.2 V core), DDR memory (1.5 V), and HDMI interface (3.3 V) in flat-panel TVs. IC Role / Device Role / Timing Role: Primary point-of-load regulator delivering tightly regulated, low-noise DC from 12 V main rail. Use Value: D-CAP2's fast transient response maintains <±1% output deviation during CPU burst loads, eliminating need for large bulk capacitance. | Use Scenario: Powering cable modem chipset with separate 3.3 V PHY, 1.8 V MAC, and 1.2 V processor cores. IC Role / Device Role / Timing Role: Dual-channel buck converter managing independent power domains with precise sequencing via EN1/EN2 control. Use Value: Independent soft-start (SS1/SS2) enables controlled power-up order, preventing latch-up or brownout in multi-voltage SoCs. |
| Digital Set Top Box (STB) | Gaming Console Subsystem |
Use Scenario: Regulating 1.2 V FPGA core, 3.3 V PCIe interface, and 5 V USB peripherals in compact STB enclosures. IC Role / Device Role / Timing Role: High-efficiency dual buck supplying multiple voltage domains from single 12 V input. Use Value: Eco-mode achieves >85% efficiency at 50 mA load, reducing standby power consumption below 150 mW - meets Energy Star Tier 2 requirements. | Use Scenario: Powering GPU voltage-tracking circuitry requiring synchronized 1.05 V and 1.2 V rails with fast dynamic response. IC Role / Device Role / Timing Role: Dual-channel synchronous buck with matched loop dynamics for coordinated voltage scaling. Use Value: Identical D-CAP2 architecture per channel ensures matched transient behavior and phase margin, simplifying dynamic voltage/frequency scaling (DVFS) design. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS54294PWP | Same pinout and package, but rated for 3-A per channel; higher rDS(ON) (120 mΩ HS / 70 mΩ LS) and 600-kHz default frequency. | Better suited for higher-current loads (>2 A) with relaxed efficiency targets; not drop-in for 2-A designs due to different current limit and thermal profile. | Select TPS54294PWP only when peak load exceeds 2 A and board layout accommodates higher power dissipation. |
| MP2492D-LF-Z | Monolithic dual 2-A buck in 16-pin QFN; uses current-mode control (not D-CAP2); fixed 500-kHz frequency; no integrated VREG5 LDO. | Lacks VREG5 bias rail and D-CAP2's capacitor-agnostic stability; requires external compensation and dedicated 5-V supply for logic. | Choose MP2492D-LF-Z when cost sensitivity outweighs design simplicity and when external 5-V bias is already available. |
Compared with TPS54295PWP, TPS54294PWP offers higher current headroom but reduced light-load efficiency, while MP2492D-LF-Z trades control-loop simplicity and integrated bias for lower unit cost and smaller footprint - neither is pin-compatible, and both require layout and firmware validation for replacement.
Availability
TPS54295PWP is available at Aetrix Electronics and suitable for digital TV power supplies, networking home terminals, and digital set-top box (STB) applications requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for TPS54295PWP 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 and system-level power architecture.
The TPS54295 product line delivers dual-channel, integrated-FET buck converters targeting cost-sensitive, space-constrained consumer electronics requiring fast transient response, low standby current, and minimal external components.
FAQ
What is the maximum junction temperature specification for the TPS54295PWP?
The TPS54295PWP has a maximum operating junction temperature of 125°C under recommended conditions, with thermal shutdown activation at 155°C (typical). Its HTSSOP package provides RθJA = 47.5°C/W, so at 2 A per channel and 12 V input, proper PCB copper area and thermal pad soldering are essential to maintain TJ < 125°C in 85°C ambient environments. The TPS54295PWP datasheet specifies derating curves for continuous operation above 85°C ambient.
Does the TPS54295PWP support independent voltage programming for each channel?
Yes, the TPS54295PWP supports fully independent voltage programming via separate resistor dividers on VFB1 and VFB2 pins. Each channel uses the same 765-mV internal reference, so VO1 = 0.765 × (1 + R1/R2) and VO2 = 0.765 × (1 + R3/R4). The TPS54295PWP datasheet confirms no coupling between channels - output voltages can differ (e.g., 1.2 V and 3.3 V) without affecting regulation accuracy or stability.
Can the TPS54295PWP operate with ceramic output capacitors only?
Yes, the TPS54295PWP is explicitly designed for ceramic output capacitors under D-CAP2 control mode. Its internal compensation eliminates the need for ESR-based ripple, and the datasheet validates stability with 10–100 µF X5R/X7R ceramics. Unlike traditional voltage-mode controllers, the TPS54295PWP does not require minimum ESR or tantalum/POSCAP additions - ceramic-only designs reduce size, cost, and aging drift.
What protection features are integrated into the TPS54295PWP?
The TPS54295PWP integrates cycle-by-cycle overcurrent protection (OCP), output overvoltage (OVP at 120% VREF) and undervoltage (UVP at 68% VREF) protection, input undervoltage lockout (UVLO on VREG5), and thermal shutdown (155°C). All protections are latched and reset only upon EN pin toggle - no external watchdog or reset IC is needed for basic fault recovery in consumer power applications.
Is the VREG5 output on the TPS54295PWP mandatory to use?
No, the VREG5 output is not mandatory but is active whenever VIN1 is present (≥6 V). It supplies the internal control circuitry and can optionally power external bias rails (e.g., level shifters or monitoring ICs). If unused, VREG5 must still be bypassed with ≥1 µF ceramic capacitor to GND per the TPS54295PWP datasheet - omitting this capacitor risks instability or erratic enable behavior.
TPS54295PWP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- D-CAP2™, Eco-Mode™
- Package/Case:
- 16-PowerTSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 2
- Voltage - Input (Min):
- 4.5V
- Voltage - Input (Max):
- 18V
- Voltage - Output (Min/Fixed):
- 0.76V
- Voltage - Output (Max):
- 7V
- Current - Output:
- 2A
- Frequency - Switching:
- 700kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-HTSSOP
TPS54295PWP FAQ
1.How can I place an order for TPS54295PWP through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS54295PWP 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 TPS54295PWP reliable?
The price and inventory of TPS54295PWP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS54295PWP is usually 5 days.
3.What payment methods are accepted for TPS54295PWP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS54295PWP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS54295PWP?
TPS54295PWP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS54295PWP 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 TPS54295PWP?
For technical support, including TPS54295PWP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS54295PWP requirements.
6.How does Aetrix verify that TPS54295PWP is sourced from the original manufacturer or authorized distributors?
All TPS54295PWP 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 TPS54295PWP meets industry standards.
7.What is the process for return or replacement of TPS54295PWP?
All TPS54295PWP units undergo pre-shipment inspection (PSI). If there is an issue with TPS54295PWP, 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 TPS54295PWP part is unused and in its original packaging.
Return procedure for TPS54295PWP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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