My Inquiry
My Account
Texas Instruments TPS65288RHAT
- Part No.:
- TPS65288RHAT
- Manufacturer:
- Texas Instruments
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
TPS65288RHAT.pdf
- Description:
- IC REG BCK ADJ 3A/2A TRPL 40VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:250
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TPS65288RHAT from Texas Instruments is a 40-pin QFN power management IC integrating three synchronous step-down DC-DC converters (3 A / 2 A / 2 A) and two USB power switches (1.2 A each), operating from 4.5 V to 18 V input with 0.8 V ±1% reference accuracy, 300 kHz–2.2 MHz adjustable switching frequency, and -40°C to 125°C junction temperature range - used in multi-rail industrial control and embedded computing power systems.
For engineers reviewing the TPS65288RHAT datasheet, TPS65288RHAT pinout, TPS65288RHAT application, or TPS65288RHAT equivalent, key selection considerations include per-converter enable/soft-start/current-limit configuration, out-of-phase buck operation for reduced input ripple, integrated OVP/OCP/thermal protection, and USB switch fault signaling with open-drain nFAULT outputs.
Technical Context
The TPS65288RHAT implements peak current-mode control with built-in slope compensation across all three buck regulators, enabling stable operation with simple Type II compensation networks and crossover frequencies >100 kHz. Each converter features independent external soft-start (SSx), current limit (RLIMx), and enable (ENx) pins for precise sequencing and optimization.
Buck1 and Buck2 operate 180° out-of-phase to minimize input capacitor RMS current and EMI; all three converters support pulse-skipping mode (PSM) for <2% output ripple at light load and forced PWM mode via F_PWM pin. The integrated USB switches provide programmable current limiting (1.2 A typical), thermal shutdown (130°C trip), and reverse-voltage protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 4.5 V to 18 V - supports 5 V, 9 V, 12 V, and 15 V input systems without external pre-regulation. |
| Buck Output Current | 3.5 A (Buck1), 2.5 A (Buck2/Buck3) - continuous rating enables high-density multi-rail designs with margin. |
| Feedback Reference | 0.8 V ±1% - enables precise output voltage setting down to 0.8 V using standard resistor dividers. |
| Switching Frequency | 300 kHz to 2.2 MHz - set externally via ROSC resistor; allows optimization of size, efficiency, and EMI. |
| USB Switch Current Limit | 1.2 A typical (trimmable to 0.8/1.0/1.4/1.6/1.8/2.0/2.2 A) - factory-configurable for USB 2.0 compliance and system-level current budgeting. |
| Thermal Shutdown | 160°C trip, 140°C restart - 20°C hysteresis prevents oscillation during thermal overload recovery. |
| PGOOD Logic | Open-drain, active-high (default), asserts when all buck outputs ≥90% nominal and de-asserts ≤85% - enables reliable system power sequencing. |
Pinout & Package
TPS65288RHAT is housed in a thermally efficient 40-pin RHA package (6 mm × 6 mm QFN) with exposed PowerPAD for enhanced thermal dissipation and electrical grounding.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| EN1, EN2, EN3 | Independent enable inputs | Enable each buck regulator separately; weak internal 1 MΩ pull-up to V3V enables delayed start-up with external capacitor. |
| SS1, SS2, SS3 | Soft-start timing inputs | 5 µA internal current source charges external capacitor; ~167 µs/nF rise time controls output ramp rate. |
| RLIM1, RLIM2, RLIM3 | Peak current limit set points | Resistor-to-ground sets inductor peak current limit (Buck1: 0.75–4 A; Buck2/Buck3: 0.75–3 A). |
| FB1, FB2, FB3 | Feedback inputs | Connect resistor divider to set output voltage; internal 0.8 V reference enables outputs from 0.8 V to VIN − IR drops. |
| USB1_EN, USB2_EN | USB switch control inputs | High-active enables respective 1.2 A USB power switch; open-drain nFAULT outputs signal overcurrent/overtemperature. |
| PGOOD | Power-good status output | Open-drain, active-high (factory default); pulled low if any buck output falls below 85% nominal. |
| LX1/LX2/LX3 (dual pins each) | Switching node outputs | High-current connections to external inductors; LX1/LX2 operate 180° out-of-phase to reduce input ripple. |
| BST1, BST2, BST3 | Bootstrap supply terminals | Connect 47 nF ceramic capacitor between BSTx and corresponding LXx to drive high-side MOSFET gates. |
Key Features
| Feature | Design Value |
|---|---|
| Three integrated synchronous bucks | Eliminates need for six external MOSFETs and simplifies layout while achieving >90% efficiency at full load. |
| Programmable USB current limits | Seven factory-trimmed thresholds (0.8–2.2 A) allow precise matching to downstream device requirements without external sensing. |
| Hiccup-mode overcurrent protection | 10 ms shutdown + 10 ms retry cycle prevents thermal runaway during sustained overload while preserving system visibility. |
| Pre-biased output startup support | Enables safe power-up into pre-charged rails - critical for hot-swap and FPGA/CPU core voltage sequencing. |
| Integrated OVP circuitry | 106% overvoltage threshold disables high-side FET to clamp output overshoot; recovers at 104% for fast transient recovery. |
| Internal bias rails (V3V/V7V) | Dedicated 3.3 V and 6.25 V supplies power internal logic and gate drivers - decoupled via separate ceramic capacitors (3.3–10 µF). |
Applications
| Industrial PLC I/O Module | Embedded Vision Camera |
|---|---|
|
Use Scenario: Powering isolated analog front-end, FPGA I/O banks, and microcontroller cores from a 12 V field bus. IC Role / Device Role / Timing Role: Primary PMIC delivering 3.3 V (I/O), 1.8 V (FPGA), and 1.2 V (core) with independent sequencing and PGOOD monitoring. Use Value: Single-chip solution reduces BOM count by 12+ discrete regulators and eliminates external current-sense resistors for USB peripherals. |
Use Scenario: Supplying image sensor, ISP processor, and USB 2.0 interface in compact edge AI camera. IC Role / Device Role / Timing Role: Three-buck regulator + dual USB switches provide rail isolation, dynamic load handling, and plug-and-play peripheral power. Use Value: PSM mode maintains <2% ripple at standby; hiccup protection prevents thermal failure during lens motor stall events. |
| Automotive Infotainment Head Unit | Network Edge Gateway |
|
Use Scenario: Generating multiple low-noise rails for audio codec, display driver, and MCU from 9 V–16 V automotive battery. IC Role / Device Role / Timing Role: High-efficiency buck converters with 180° phase shift minimize input filter size; USB switches power rear-seat USB ports. Use Value: -40°C to 125°C operation meets AEC-Q100 ambient requirements; OVP clamps load-dump transients up to 20 V. |
Use Scenario: Powering ARM-based SoC, Ethernet PHY, and cellular modem in fanless industrial gateway. IC Role / Device Role / Timing Role: Integrated thermal shutdown (160°C) and USB fault signaling enable autonomous recovery without host intervention. Use Value: RHA package's 30°C/W θJA enables full 3 A/2 A/2 A loading at 55°C ambient without heatsink. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multi-rail PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS65287RHAT | Same pinout and feature set but rated for 4.5 V–15 V input (vs. 4.5 V–18 V); identical buck specs and USB current limits. | Preferred for 5 V/9 V/12 V systems where 15 V max input suffices; not suitable for 18 V industrial or automotive cold-crank scenarios. | Select TPS65287RHAT only if input never exceeds 15 V - avoids over-spec'ing voltage rating and potential cost premium. |
| MPQ4482GQ-AEC1-Z | Three-buck PMIC with 4.5 V–36 V input, but no integrated USB switches; requires external load switches for USB functionality. | Used in automotive ADAS ECUs needing wider input range and AEC-Q100 Grade 1 qualification; lacks native USB power control. | Choose MPQ4482GQ-AEC1-Z when input voltage may reach 36 V (e.g., truck electronics) and USB functionality is implemented separately. |
Compared with TPS65288RHAT, TPS65287RHAT offers identical functionality at lower maximum input voltage, while MPQ4482GQ-AEC1-Z extends input range to 36 V but removes integrated USB switching - requiring additional components and PCB area for USB power delivery.
Availability
TPS65288RHAT is available at Aetrix Electronics and suitable for industrial PLC modules, embedded vision cameras, automotive infotainment head units, and network edge gateways requiring stable component supply across extended temperature and high-reliability production cycles.
Supply support for TPS65288RHAT 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 and embedded processing technologies, with decades of expertise in power management innovation and automotive-grade reliability.
The TPS65288 product line delivers highly integrated, thermally robust multi-rail PMICs designed specifically for space-constrained industrial, automotive, and embedded computing applications demanding precise sequencing and comprehensive protection.
FAQ
What is the maximum input voltage rating for the TPS65288RHAT?
The TPS65288RHAT supports an absolute maximum input voltage of 20 V on VIN1/VIN2/VIN3 pins, with recommended continuous operation from 4.5 V to 18 V. This 18 V upper limit ensures compatibility with 12 V industrial buses and automotive cold-crank conditions while maintaining safety margin against transients.
Does the TPS65288RHAT support pre-biased output startup?
Yes, the TPS65288RHAT explicitly supports pre-biased output startup across all three buck converters. This capability allows safe power-up into rails already charged by other sources - essential for hot-swap systems and FPGA/CPU core sequencing where output voltage must not be forced below ground during enable.
How is the switching frequency configured on the TPS65288RHAT?
The TPS65288RHAT switching frequency is set by connecting an external resistor between the ROSC pin and ground. The relationship follows fSW = 169.5 Ω·k−1.221, enabling precise selection from 300 kHz to 2.2 MHz - allowing trade-offs between inductor size, efficiency, and EMI performance without changing IC or layout.
What protection features does the TPS65288RHAT include for its USB switches?
The TPS65288RHAT USB switches integrate overcurrent limiting (1.2 A typical), thermal shutdown (130°C trip), reverse-voltage protection, and open-drain nFAULT outputs. When overcurrent or overtemperature occurs, the switch enters constant-current mode and asserts nFAULT low - enabling host-level fault logging and recovery without disabling the buck regulators.
Can the TPS65288RHAT operate with different output voltages on each buck channel?
Yes, the TPS65288RHAT supports independent output voltage programming on all three buck channels using external resistor dividers tied to FB1/FB2/FB3. Each channel references the same 0.8 V ±1% internal reference, enabling outputs from 0.8 V up to (VIN − IR drop), such as 1.2 V (core), 1.8 V (I/O), and 3.3 V (peripherals) simultaneously.
TPS65288RHAT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 40-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- 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):
- 0.8V
- Voltage - Output (Max):
- 17V
- Current - Output:
- 3A, 2A
- Frequency - Switching:
- 300kHz ~ 2.2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 40-VQFN (6x6)
TPS65288RHAT FAQ
1.How can I place an order for TPS65288RHAT through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS65288RHAT 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 TPS65288RHAT reliable?
The price and inventory of TPS65288RHAT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS65288RHAT is usually 5 days.
3.What payment methods are accepted for TPS65288RHAT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS65288RHAT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS65288RHAT?
TPS65288RHAT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS65288RHAT 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 TPS65288RHAT?
For technical support, including TPS65288RHAT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS65288RHAT requirements.
6.How does Aetrix verify that TPS65288RHAT is sourced from the original manufacturer or authorized distributors?
All TPS65288RHAT 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 TPS65288RHAT meets industry standards.
7.What is the process for return or replacement of TPS65288RHAT?
All TPS65288RHAT units undergo pre-shipment inspection (PSI). If there is an issue with TPS65288RHAT, 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 TPS65288RHAT part is unused and in its original packaging.
Return procedure for TPS65288RHAT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS65288RHAT 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…
