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Texas Instruments TPS5615PWP
- Part No.:
- TPS5615PWP
- Manufacturer:
- Texas Instruments
- Category:
- Special Purpose Regulators
- Package:
- 28-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPS5615PWP.pdf
- Description:
- IC REG CTRLR DSP 1OUT 28HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,593
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Product details
Overview
TPS5615PWP from Texas Instruments is a synchronous-buck hysteretic regulator controller designed for high-efficiency DC/DC conversion in DSP power supplies. It delivers a fixed 1.5 V output with ±1% accuracy over 0°C to 125°C, supports 11.4–13 V VCC input, integrates 2-A high- and low-side MOSFET drivers, and features active deadtime control and power-good monitoring - enabling stable, transient-resilient core voltage regulation in embedded digital signal processing systems.
For engineers reviewing the TPS5615PWP datasheet, TPS5615PWP pinout, TPS5615PWP application, or TPS5615PWP equivalent, this page provides verified technical context, validated pin functions, confirmed operating parameters, real-world use cases in DSP power sequencing, and two rigorously cross-checked alternative controllers with documented functional and application-level differences.
Technical Context
The TPS5615PWP implements a user-configurable hysteretic control architecture with propagation delay under 250 ns, enabling rapid load-transient response without external compensation. Its dual 2-A gate drivers support both bootstrap and ground-referenced high-side configurations, while active deadtime logic prevents shoot-through by enforcing voltage thresholds (e.g., LOHIB activation only when phase node falls below 2 V).
Internal protection includes overvoltage shutdown at 115% VREF, undervoltage lockout with 10 V startup threshold and 2 V hysteresis, and programmable overcurrent detection via resistor-divider feedback to the OCP pin - all coordinated through deglitched comparators with 3 μs noise immunity.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5 V, ±1% accuracy over full 0°C–125°C junction temperature range - ensures stable DSP core supply without external feedback resistors. |
| VCC Input Range | 11.4 V to 13 V - optimized for 12-V intermediate bus architectures in telecom and industrial systems. |
| Driver Output Current | 2 A peak sink/source per driver - directly drives low-RDS(on) n-channel MOSFETs without external buffers. |
| Hysteresis Control | User-selectable via VHYST pin; max 60 mV window - reduces output overshoot/undershoot during dynamic load steps. |
| Power Good Threshold | 93% of nominal output (1.40 V for TPS5615PWP); open-drain output - enables reliable system power sequencing and fault signaling. |
| Overvoltage Protection | Triggers at 115% VREF (1.73 V), latches until VCC drops below UVLO - safeguards downstream logic from catastrophic rail collapse. |
| Quiescent Supply Current | 3 mA typical - minimizes standby power loss in always-on subsystems. |
Pinout & Package
The TPS5615PWP is housed in a 28-pin TSSOP PowerPad™ package (PWP) with exposed thermal pad for enhanced heat dissipation. Pin numbering follows standard top-view orientation with Pin 1 at bottom-left corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IOUT | Current-sense output | Provides voltage proportional to high-side FET RDS(on) current (2 × RDS(on) × IOUT) - enables lossless current monitoring without sense resistor. |
| VSENSE | Output voltage feedback | Direct connection to converter output bus; RC filter recommended - forms closed-loop regulation point for hysteretic comparator. |
| HIGHDR / LOWDR | High-/low-side gate drivers | 2-A capable outputs driving n-channel MOSFET gates - eliminates need for discrete driver stages in high-current buck designs. |
| BOOT / BOOTLO | Bootstrap bias network | Supports floating high-side drive configuration; BOOTLO connects to phase node - enables efficient bootstrap capacitor charging for high-side FET gate drive. |
| PWRGD | Power-good indicator | Open-drain output pulled low if VOUT < 93% of setpoint - used for system enable/disable sequencing and fault reporting. |
| INHIBIT | Enable/UVLO input | TTL-compatible control pin; also monitors 3.3 V/5 V logic rail - enforces power-up order between 12-V analog and digital supplies. |
Key Features
| Feature | Design Value |
|---|---|
| Synchronous rectifier driver | Integrated 2-A low-side driver eliminates external synchronous rectifier IC - improves efficiency >90% and reduces BOM count. |
| Active deadtime control | Hardware-enforced timing prevents shoot-through by gating driver turn-on based on phase-node voltage - removes reliance on PCB layout or external timing components. |
| Programmable soft-start | Capacitor-controlled ramp via SLOWST pin - prevents inrush current and stabilizes startup in multi-rail systems with tight sequencing requirements. |
| Overvoltage/overcurrent protection | Dedicated OVP latch (115% VREF) and adjustable OCP (via resistor divider to OCP pin) - protects against short-circuit faults and rail collapse without external supervision circuitry. |
| ±1% reference accuracy | Bandgap-derived VREF buffered to VREFB with 2% tolerance - guarantees output voltage stability across temperature and line variations without calibration. |
Applications
| DSP Core Power Supply | Industrial Motor Control Logic |
|---|---|
Use Scenario: Providing tightly regulated 1.5 V supply to TI C6000-series DSPs in baseband processing units. IC Role / Device Role / Timing Role: Primary buck controller managing core voltage with fast transient response and precise sequencing relative to I/O rails. Use Value: ±1% output accuracy and <250 ns propagation delay minimize voltage droop during instruction bursts - preserving DSP timing margins and computational integrity. | Use Scenario: Generating clean 1.5 V logic supply for FPGA-based motor control IP cores in servo drives. IC Role / Device Role / Timing Role: Regulator controller coordinating power-up with gate-driver ICs and analog sensor interfaces via INHIBIT and PWRGD signals. Use Value: Programmable soft-start and power-good output ensure deterministic initialization sequence - preventing metastability in real-time motion control loops. |
| Telecom Line Card Biasing | Test Equipment Signal Processing |
Use Scenario: Delivering stable 1.5 V to high-speed ADC/DAC interface circuitry in 4G/LTE remote radio heads. IC Role / Device Role / Timing Role: Hysteretic controller suppressing EMI-sensitive ripple while maintaining fast load-step recovery for burst-mode data acquisition. Use Value: User-selectable hysteresis and low 3 mA quiescent current reduce thermal load and spectral noise - improving SNR in RF front-end subsystems. | Use Scenario: Powering 1.5 V analog front-end ASICs in automated test equipment requiring low-noise, repeatable calibration. IC Role / Device Role / Timing Role: Precision regulator with buffered reference (VREFB) and filtered VSENSE input - minimizing drift-induced measurement error. Use Value: ±1% reference accuracy over temperature ensures consistent gain calibration across environmental chambers - reducing test repeatability variance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous-buck controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS5618PWP | Fixed 1.8 V output; identical pinout, package, and feature set - differs only in internal voltage divider ratio. | Targets 1.8 V I/O or memory rails instead of 1.5 V DSP cores - requires no schematic or layout change beyond output capacitor selection. | Select when system requires 1.8 V instead of 1.5 V; drop-in replacement with same thermal and timing behavior. |
| TPS5625PWP | Fixed 2.5 V output; shares same TSSOP-28 PowerPad package, driver specs, and protection features - no electrical or mechanical compatibility issues. | Used in mixed-signal SoC power domains where 2.5 V analog sections coexist with 1.5 V digital cores - necessitates separate regulator channel. | Choose for 2.5 V applications; maintains identical board footprint and thermal management strategy as TPS5615PWP. |
Compared with TPS5618PWP and TPS5625PWP, the TPS5615PWP is uniquely specified for 1.5 V DSP core regulation - its ±1% accuracy, 11.4–13 V VCC range, and integrated 2-A drivers make it optimal for high-transient, thermally constrained embedded signal processing, whereas alternatives serve distinct voltage-domain requirements without altering system architecture.
Availability
TPS5615PWP is available at Aetrix Electronics and suitable for DSP power supplies, industrial motor control logic, telecom line card biasing, and test equipment signal processing requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for TPS5615PWP 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-reliability power conversion ICs.
The TPS56xx family was engineered specifically for high-efficiency, transient-resilient DC/DC regulation in digital signal processor and FPGA power systems - emphasizing precision voltage accuracy, integrated gate drive, and robust fault protection.
FAQ
What is the output voltage specification of the TPS5615PWP?
The TPS5615PWP provides a fixed 1.5 V output voltage with ±1% accuracy over the full operating junction temperature range of 0°C to 125°C and VCC supply of 11.4 V to 12.6 V. This precision is achieved via an internal resistive divider tied to a temperature-compensated bandgap reference, and the buffered VREFB pin delivers voltage within 2% of VREF for external hysteresis and soft-start configuration. The TPS5615PWP does not support adjustable output voltages.
How does the TPS5615PWP implement overcurrent protection?
The TPS5615PWP implements overcurrent protection using the OCP pin, which monitors voltage derived from the high-side FET's RDS(on) via the IOUT pin. An external resistor divider sets the trip threshold, triggering a fault latch when the OCP voltage exceeds 100 mV (90–110 mV range). The latch remains active until VCC drops below the UVLO stop threshold (~7.5 V), and a 3-μs deglitch timer ensures noise immunity. This mechanism protects against short-to-ground faults at the phase node without requiring external current-sense amplifiers.
Can the TPS5615PWP be used with a ground-referenced high-side driver configuration?
Yes, the TPS5615PWP supports both bootstrap and ground-referenced high-side driver configurations. To configure ground-referenced operation, connect BOOTLO to DRVGND and BOOT to either DRV or VCC. This eliminates the need for a bootstrap capacitor and simplifies layout in lower-frequency or space-constrained applications. The internal 8-V gate-voltage regulator and 2-A driver capability remain fully functional in this mode, preserving drive strength and reliability for n-channel high-side FETs.
What is the purpose of the INHIBIT pin on the TPS5615PWP?
The INHIBIT pin on the TPS5615PWP serves dual functions: it acts as a TTL-compatible enable/disable control and as an undervoltage lockout (UVLO) monitor for the system logic supply (3.3 V or 5 V). When pulled low, it disables output drivers and discharges the soft-start capacitor. Its 2.1 V startup threshold and 100 mV hysteresis ensure coordinated power sequencing - the TPS5615PWP will not initiate regulation until both the 12-V VCC rail and the logic supply exceed their respective UVLO thresholds, preventing erratic behavior during asymmetric power-up.
Does the TPS5615PWP include integrated power-good monitoring?
Yes, the TPS5615PWP includes a dedicated open-drain PWRGD output that asserts low when the regulated output voltage falls below 93% of the nominal 1.5 V setpoint (i.e., below 1.40 V). This signal is internally generated by a comparator referenced to VREF and provides deterministic power-good status for downstream logic, FPGA configuration, or system reset controllers. No external components are required - the PWRGD pin can directly interface with microcontroller interrupt inputs or supervisor ICs.
TPS5615PWP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 28-PowerTSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Applications:
- Controller, DSP
- Voltage - Input:
- 11.4V ~ 13V
- Number of Outputs:
- 1
- Voltage - Output:
- 1.5V
- Operating Temperature:
- 0°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-HTSSOP
TPS5615PWP FAQ
1.How can I place an order for TPS5615PWP through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS5615PWP 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 TPS5615PWP reliable?
The price and inventory of TPS5615PWP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS5615PWP is usually 5 days.
3.What payment methods are accepted for TPS5615PWP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS5615PWP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS5615PWP?
TPS5615PWP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS5615PWP 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 TPS5615PWP?
For technical support, including TPS5615PWP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS5615PWP requirements.
6.How does Aetrix verify that TPS5615PWP is sourced from the original manufacturer or authorized distributors?
All TPS5615PWP 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 TPS5615PWP meets industry standards.
7.What is the process for return or replacement of TPS5615PWP?
All TPS5615PWP units undergo pre-shipment inspection (PSI). If there is an issue with TPS5615PWP, 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 TPS5615PWP part is unused and in its original packaging.
Return procedure for TPS5615PWP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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