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Texas Instruments TPS65301QPWPRQ1
- Part No.:
- TPS65301QPWPRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Regulators - Linear + Switching
- Package:
- 24-PowerTSSOP (0.173", 4.40mm Width)
- Datasheet:
-
TPS65301QPWPRQ1.pdf
- Description:
- IC REG QUAD BUCK/LINEAR 24HTSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,905
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Product details
Overview
TPS65301QPWPRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive power management IC integrating a 5.45-V/1.2-A synchronous buck regulator, a fixed 5-V linear regulator, two linear regulator controllers (3.3 V ±2% and 1.2 V ±2%), and a protected 5-V sensor supply that tracks the 3.3-V output. It operates from 5.6 V to 40 V input with transient tolerance up to 45 V and supports 2–3 MHz switching frequency for compact magnetics. Used in TMS570 MCU and C28x DSP power systems.
For engineers reviewing the TPS65301QPWPRQ1 datasheet, TPS65301QPWPRQ1 pinout, TPS65301QPWPRQ1 application, or TPS65301QPWPRQ1 equivalent, key selection criteria include its triple-regulator architecture with external bipolar transistor drive capability, programmable power-on-reset delay via DELAY pin, voltage supervisor for VREG/3.3V/1.2V outputs, and HTSSOP-24 thermal pad package with automotive-grade ESD (H2/C4B) and thermal performance (RθJA = 33.6°C/W).
Technical Context
The TPS65301QPWPRQ1 implements voltage-mode PWM control with internal 45-V/1.2-A N-channel MOSFET, line-voltage feedforward compensation, and external loop compensation via COMP pin. Its buck stage uses bootstrap gate drive (BOOT pin) and supports both RT-resistor programming and external clock synchronization (RT/CLK pin) across 2–3 MHz.
It integrates three independent regulation paths: a monolithic 5-V LDO (5V pin), and two controller loops driving external NPN transistors via 3.3VDRIVE/1.2VDRIVE pins with feedback sensed at 3.3VSENSE/1.2VSENSE. The 5VS output is a reverse-protected, current-limited (150 mA) linear regulator tracking the 3.3-V rail within specification.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5.6 V to 40 V, with 45-V transient tolerance - enables direct battery connection in 12-V/24-V automotive systems without pre-regulation. |
| Buck Output | 5.45 V ±2.5%, 1.2-A peak switch current - powers downstream regulators and provides stable preregulation under load transients. |
| Linear Regulators | Fixed 5 V ±2% (150 mA), 3.3 V ±2% & 1.2 V ±2% controller outputs - support I/O and core rails with external bipolar pass transistors. |
| Switching Frequency | 2 MHz to 3 MHz, programmable via RT resistor or external CLK - allows use of low-profile inductors and ceramic capacitors. |
| Reset Supervision | Monitors VREG, 3.3V, and 1.2V outputs; nRST asserts low if any falls outside ±2.5% window - ensures deterministic system boot and fault signaling. |
| Package | 24-pin HTSSOP (PWP) with exposed thermal pad, 7.8 mm × 4.4 mm - delivers RθJA = 33.6°C/W for high-power-density automotive PCB layouts. |
| AEC-Q100 Grade | Grade 1 (–40°C to +125°C ambient), HBM ESD Level H2 (±2 kV), CDM Level C4B (±750 V on corner pins) - qualified for engine bay and ADAS applications. |
Pinout & Package
TPS65301QPWPRQ1 is packaged in a thermally enhanced 24-pin HTSSOP (PWP) with exposed copper thermal pad, requiring solder connection to PCB ground plane for optimal electrical and thermal performance (RθJB = 14.5°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PH (1) | Power Switch Node | Source of internal high-side MOSFET; connects to external inductor and Schottky catch diode for buck topology. |
| VIN (2,4) | Main Input Supply | Unregulated input (5.6–40 V); pins 2 and 4 must be externally shorted to distribute current and reduce impedance. |
| IGN_EN (3) | High-Voltage Ignition Enable | 14–40 V tolerant input; internally pulled down; requires external pull-up to enable device during vehicle ignition. |
| BOOT (5) | Bootstrap Gate Drive | Connects external 0.1-µF X7R capacitor to PH to generate gate voltage for internal high-side FET. |
| 5VS (7) | Protected Sensor Supply | 5-V output tracking 3.3-V rail; reverse-protected, 150-mA current-limited, short-circuit tolerant - ideal for analog sensors. |
| RT/CLK (8) | Oscillator Control | Configurable as RT pin (resistor-to-ground sets 2–3 MHz) or CLK input (accepts 2–3 MHz external clock with ≤10 µs sync time). |
| EN (9) | Logic Enable | Standard CMOS input (VIH ≥ 1.7 V); internally pulled down; enables full device operation when asserted high. |
| 5V (10) | Fixed 5-V LDO Output | Monolithic 5-V ±2% regulator (150 mA); requires 1–10 µF output capacitor with ESR 0.001–2 Ω for stability. |
| nRST (21) | Open-Drain Reset Indicator | Active-low, open-drain output; floats high after VREG/3.3V/1.2V are in regulation and DELAY timer expires; asserts low on any undervoltage fault. |
| DELAY (19) | Reset Delay Timing | Connects external capacitor to ground; 1.4–2.6 µA charging current sets power-on-reset release time (e.g., 100 nF ≈ 71 ms). |
| VREG (20) | Buck Output Sense | Feedback node for 5.45-V buck regulator; connects directly to output capacitor; used by internal error amplifier and reset supervision. |
| PGND (22,24) | Power Ground | High-current return path for buck switch and LDOs; must be connected to thermal pad and low-impedance PCB ground plane. |
Key Features
| Feature | Design Value |
|---|---|
| Triple-Regulator Architecture | Combines buck preregulator, monolithic 5-V LDO, and two external-transistor controllers (3.3 V/1.2 V) - reduces BOM count and simplifies multi-rail automotive power design. |
| Programmable Power-On Reset | External DELAY capacitor sets precise nRST assertion timing (e.g., 10–1000 ms range) - eliminates need for discrete RC reset ICs in safety-critical systems. |
| Protected 5-V Sensor Rail | 5VS output tracks 3.3-V supply and includes reverse-polarity protection and 2.25-mA short-circuit current limit - safeguards sensitive analog sensors from wiring faults. |
| Automotive-Grade Supervision | Integrated voltage monitor checks VREG, 3.3V, and 1.2V outputs against ±2.5% thresholds with 11-µs deglitch filter - meets ISO 26262 ASIL-B monitoring requirements. |
| Thermally Optimized Package | HTSSOP-24 with exposed thermal pad achieves RθJB = 14.5°C/W - enables reliable 1.2-A buck operation at 125°C ambient without forced airflow. |
Applications
| Power Supply for TMS570 Microcontrollers | Power Supply for C28x Digital Signal Processors |
|---|---|
Use Scenario: Primary power solution for TI's TMS570LS series safety MCUs in automotive body control modules and brake ECUs. IC Role / Device Role / Timing Role: Provides tightly regulated 5-V, 3.3-V, and 1.2-V rails with synchronized startup, reset coordination, and fault reporting via nRST. Use Value: Eliminates discrete supervisor and multiple LDOs while meeting ASIL-B diagnostic coverage requirements through integrated voltage monitoring and delay-programmable reset. |
Use Scenario: Core power delivery for C2000™ C28x real-time DSPs in electric power steering (EPS) and motor control inverters. IC Role / Device Role / Timing Role: Generates 3.3-V I/O and 1.2-V core supplies using external NPN transistors, with soft-start sequencing controlled by SS and IGN_EN inputs. Use Value: Enables fast, controlled power-up of DSP peripherals and core logic with <13-ms soft-start time per rail and <12.3-ms 3.3-V ramp, minimizing inrush stress. |
| Automotive Camera Module Power | ADAS Domain Controller Pre-Regulator |
Use Scenario: Power management for 5-MP image sensors and ISP SoCs in surround-view and forward-facing cameras. IC Role / Device Role / Timing Role: Delivers low-noise 3.3-V and 1.2-V supplies with >60-dB PSRR at 100 Hz, plus protected 5-V rail for analog sensor biasing. Use Value: Maintains sensor SNR and image quality via high PSRR and tight load regulation (±30 mV over 550 mA for 3.3 V), even during engine cranking transients. |
Use Scenario: Preregulation stage feeding point-of-load converters in centralized ADAS domain controllers with multiple SoCs. IC Role / Device Role / Timing Role: Converts 12-V battery to stable 5.45-V intermediate bus (VREG) with 2–3 MHz switching, enabling small 1.0-µH inductors and low-ESR ceramic caps. Use Value: Reduces board area by 40% vs. 500-kHz solutions and improves transient response with external COMP network tuning for dynamic SoC load profiles. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar automotive multi-rail power management applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS65381AQ1 | Higher integration: adds CAN transceiver, watchdog, and SPI interface; no 5VS tracking rail; 3.3-V/1.2-V outputs are monolithic LDOs (not controllers). | Suitable for systems requiring communication interface and functional safety diagnostics but not external bipolar transistor flexibility. | Select TPS65381AQ1 when CAN bus connectivity and ASIL-D diagnostic coverage are required; avoid if 5VS tracking or high-current 3.3-V/1.2-V controller drive is needed. |
| LM66200QDQARQ1 | Dual-channel 3.3-V/1.2-V monolithic LDO only; no buck converter, no 5VS, no reset supervision; max 300 mA per channel. | Applicable only as secondary regulation stage downstream of a separate buck converter; lacks system-level power sequencing and fault reporting. | Choose LM66200QDQARQ1 for cost-sensitive, low-power auxiliary rails where primary regulation and supervision are handled elsewhere. |
Compared with TPS65301QPWPRQ1, TPS65381AQ1 offers greater system integration at the expense of 5VS tracking and external transistor drive, while LM66200QDQARQ1 provides simpler dual-LDO functionality but requires external buck conversion and supervision circuitry - making TPS65301QPWPRQ1 optimal for compact, self-contained 3-rail automotive power designs.
Availability
TPS65301QPWPRQ1 is available at Aetrix Electronics and suitable for automotive power supply design, TMS570/C28x MCU systems, and ADAS camera module development requiring stable component supply, long lifecycle assurance, and AEC-Q100 compliance.
Supply support for TPS65301QPWPRQ1 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 automotive ICs, with decades of automotive qualification expertise and broad manufacturing scale.
The TPS65301-Q1 product line delivers integrated power management for safety-critical automotive microcontrollers and DSPs, combining buck conversion, linear regulation, and supervision in a single AEC-Q100-compliant package.
FAQ
What is the maximum input voltage the TPS65301QPWPRQ1 can withstand during transients?
The TPS65301QPWPRQ1 supports continuous operation from 5.6 V to 40 V and is rated for transients up to 45 V on VIN and VIN_D pins. This rating is validated per AEC-Q100 stress testing and allows direct connection to 12-V and 24-V automotive batteries without external transient suppression in most use cases. The absolute maximum rating for PH pin is also 45 V, ensuring robustness during switching events.
How does the TPS65301QPWPRQ1 implement soft-start for its different regulator outputs?
The TPS65301QPWPRQ1 provides independent soft-start control: the buck regulator uses the SS pin (20) with external capacitor to set ramp time (e.g., 13 ms typical); the 3.3-V and 1.2-V controller outputs have internal soft-start circuits tied to IGN_EN and EN assertion, with fixed ramp times of 12.3 ms and 8.5 ms respectively. All three paths synchronize to the same nRST release condition after DELAY timer expiration.
Can the TPS65301QPWPRQ1 drive external NPN transistors for the 3.3-V and 1.2-V rails?
Yes, the TPS65301QPWPRQ1 explicitly supports external NPN transistor regulation via dedicated 3.3VDRIVE (19) and 1.2VDRIVE (17) pins, each delivering 10–50 mA base drive current. Feedback is taken at 3.3VSENSE (18) and 1.2VSENSE (16), enabling high-current, low-dropout regulation beyond monolithic LDO limits - a key differentiator versus standard dual-LDO alternatives.
What is the function of the 5VS output and how does it track the 3.3-V supply?
The 5VS output (pin 7) is a protected linear regulator delivering 4.9–5.1 V at up to 150 mA. It actively tracks the 3.3-V rail within specified limits using internal error amplification and feedback - meaning its output remains proportional to the 3.3-V supply during load and line variations. This tracking ensures consistent sensor biasing and eliminates differential noise between analog and digital domains in camera and radar modules.
How is power-on-reset timing configured on the TPS65301QPWPRQ1?
Power-on-reset timing is set by connecting an external capacitor from the DELAY pin (19) to ground. The device charges this capacitor with a precision 1.4–2.6 µA current; when voltage reaches 1.3–2.6 V threshold, nRST is released high. For example, a 100-nF capacitor yields ~71 ms delay, enabling customizable reset hold-off for downstream processors or FPGAs before asserting system reset.
TPS65301QPWPRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 24-PowerTSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Topology:
- Step-Down (Buck) (1), Linear (LDO) (3)
- Number of Outputs:
- 4
- Frequency - Switching:
- 2MHz ~ 3MHz
- Voltage/Current - Output 1:
- 5.45V, 1.2A
- Voltage/Current - Output 2:
- 5V, 350mA
- Voltage/Current - Output 3:
- Controller
- w/LED Driver:
- No
- w/Supervisor:
- Yes
- w/Sequencer:
- No
- Voltage - Supply:
- 5.6V ~ 40V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-HTSSOP
TPS65301QPWPRQ1 FAQ
1.How can I place an order for TPS65301QPWPRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS65301QPWPRQ1 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 TPS65301QPWPRQ1 reliable?
The price and inventory of TPS65301QPWPRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS65301QPWPRQ1 is usually 5 days.
3.What payment methods are accepted for TPS65301QPWPRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS65301QPWPRQ1 transactions.
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4.How is shipping managed for TPS65301QPWPRQ1?
TPS65301QPWPRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS65301QPWPRQ1 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 TPS65301QPWPRQ1?
For technical support, including TPS65301QPWPRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS65301QPWPRQ1 requirements.
6.How does Aetrix verify that TPS65301QPWPRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS65301QPWPRQ1 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 TPS65301QPWPRQ1 meets industry standards.
7.What is the process for return or replacement of TPS65301QPWPRQ1?
All TPS65301QPWPRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS65301QPWPRQ1, 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 TPS65301QPWPRQ1 part is unused and in its original packaging.
Return procedure for TPS65301QPWPRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TPS65301QPWPRQ1 Tags
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