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Texas Instruments TPS65300QRHFRQ1
- Part No.:
- TPS65300QRHFRQ1
- Manufacturer:
- Texas Instruments
- Category:
- Voltage Regulators - Linear + Switching
- Package:
- 24-VFQFN Exposed Pad
- Datasheet:
-
TPS65300QRHFRQ1.pdf
- Description:
- IC REG QUAD BUCK/LINEAR 24VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,292
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Product details
Overview
TPS65300QRHFRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive power management IC integrating a 5.3-V/1.2-A asynchronous buck regulator, a fixed 5-V linear regulator, and two external-transistor linear regulator controllers (3.3 V and 1.234 V). It features integrated voltage supervision with programmable power-on-reset delay, soft-start on IGN_EN enable, and 2–3 MHz switching frequency for compact magnetics. Designed for TMS570 microcontroller power supplies in engine control units and ADAS domain controllers.
For engineers reviewing the TPS65300QRHFRQ1 datasheet, TPS65300QRHFRQ1 pinout, TPS65300QRHFRQ1 application, or TPS65300QRHFRQ1 equivalent, key selection criteria include its triple-regulator architecture with external BJT drive capability, ignition-input tolerance up to 45 V, thermal shutdown at 150°C junction, and HTSSOP-24/VQFN-24 package compatibility for automotive PCB layouts requiring EMI robustness and functional safety support.
Technical Context
The TPS65300QRHFRQ1 implements voltage-mode control for its 5.3-V buck stage using an internal 2-V reference and external compensation via COMP pin, enabling stable operation with ceramic output capacitors. Its 3.3-V and 1.234-V outputs are regulated via external NPN transistors driven by dedicated current-source outputs (3.3VDRIVE/1.2VDRIVE) and sensed at dedicated feedback nodes (3.3VSENSE/1.2VSENSE).
Supervision logic continuously monitors VREG, 3.3VSENSE, and 1.2VSENSE against 90% of nominal thresholds; nRST asserts low if any supply falls out-of-regulation. Power-on reset timing is set by DELAY pin capacitor charge current (1.4–2.6 µA), while RT/CLK supports either resistor-programmed (2–3 MHz) or externally synchronized clocking with ±20% tolerance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 5.6 V to 40 V (supports 12 V/24 V automotive battery rails with 45 V transient tolerance) |
| Buck Output | 5.3 V ±3.5% (fixed, 1.2-A peak switch current, requires ≥10 µF ceramic output capacitor) |
| 5-V LDO Output | 5.0 V ±2% (150 mA current limit, dropout ≤0.26 V at 150 mA) |
| 3.3-V Regulator Control | 3.3 V ±1% (external NPN, 550 mA max load, base drive current 10–50 mA) |
| 1.234-V Regulator Control | 1.234 V ±2% (external NPN, 350 mA max load, base drive current 10–50 mA) |
| Switching Frequency | 2 MHz to 3 MHz (programmable via RT/CLK pin; enables use of <1 µH inductors) |
| Reset Delay Accuracy | Programmable via DELAY pin capacitor; charging current 1.4–2.6 µA (±30% typical) |
Pinout & Package
TPS65300QRHFRQ1 is available in thermally enhanced 24-pin HTSSOP (PWP) and 24-pin VQFN (RHF) packages, both with exposed thermal pads electrically connected to GND for optimal PCB heat dissipation. Package dimensions: HTSSOP = 7.80 mm × 4.40 mm; VQFN = 5.00 mm × 4.00 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN_D | Drain input for internal high-side MOSFET | Must be tied externally to VIN; forms PH node with internal switch |
| PH | Phase node of buck converter | Connects BOOT capacitor; floating reference for gate drive circuitry |
| BOOT | Bootstrap supply for high-side FET gate | Requires ceramic cap between BOOT and PH; refreshed by internal BOOT_LDO |
| VREG | Buck output (5.3 V) | Fixed output; feeds 5V, 3.3VDRIVE, and 1.2VDRIVE regulators |
| IGN_EN | High-voltage ignition enable input | 45 V tolerant; internally pulled down; enables full device operation when high |
| EN | Logic-level enable input | Active-high; disables all outputs when low (requires IGN_EN active first) |
| nRST | Open-drain reset indicator output | Asserts low if VREG, 3.3VSENSE, or 1.2VSENSE drops below 90% of nominal |
| DELAY | Power-on-reset delay timer | Sinks 1.4–2.6 µA to charge external capacitor; sets nRST release timing |
| SS | Soft-start timer for buck regulator | Sources 40–60 µA to charge external capacitor; controls ramp-up of VREG |
| 3.3VDRIVE / 1.2VDRIVE | External transistor base drive outputs | Current-source outputs (10–50 mA) for driving NPN pass transistors |
| 3.3VSENSE / 1.2VSENSE | Feedback sense inputs | Monitor regulated 3.3 V / 1.234 V outputs; trigger foldback at ~1.65 V / ~0.6 V |
| COMP | Error amplifier compensation node | Connects external RC network to stabilize buck loop response |
| GND / PGND | Analog / power ground | PGND must connect to thermal pad; GND ties to system ground plane |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C ambient operation in automotive ECUs and ADAS modules |
| Triple independent regulation paths | 5.3-V buck + 5-V LDO + 3.3-V/1.234-V external-BJT controllers enable flexible rail sequencing |
| Integrated voltage supervisor with nRST | Monitors three critical rails simultaneously; single open-drain output signals fault across all |
| Ignition-input tolerance and status | IGN_EN accepts 14–40 V; IGN_ST provides active-low status signal for microcontroller wake-up |
| Programmable soft-start and reset delay | SS and DELAY pins accept external capacitors for precise timing control without firmware |
Applications
| Engine Control Unit (ECU) | Advanced Driver Assistance Systems (ADAS) |
|---|---|
Use Scenario: Powers TMS570LS12x MCU and peripheral sensors in gasoline/diesel engine management systems under wide battery voltage transients. IC Role / Device Role / Timing Role: Primary power sequencer delivering 5.3 V (core), 5 V (peripherals), 3.3 V (IO), and 1.234 V (CPU core) with ignition-synchronized startup. Use Value: Integrated supervision eliminates need for discrete reset IC; IGN_EN tolerance avoids external level-shifting; thermal shutdown protects during under-hood temperature excursions. |
Use Scenario: Supplies C28x DSP and camera interface ICs in forward collision warning and lane departure systems. IC Role / Device Role / Timing Role: Central PMIC providing tightly regulated, low-noise rails with fast transient response for real-time vision processing. Use Value: 2–3 MHz switching minimizes EMI near sensitive analog video paths; ceramic-capacitor compatibility reduces board area; nRST ensures deterministic boot after cold crank. |
| Automotive Body Control Module (BCM) | Electric Power Steering (EPS) |
Use Scenario: Delivers multiple voltage rails to microcontrollers, LIN transceivers, and LED drivers in door modules and lighting control units. IC Role / Device Role / Timing Role: Single-chip solution replacing discrete buck + LDO + supervisor combinations; supports wake-on-LIN via IGN_EN. Use Value: Soft-start prevents inrush into large capacitive loads; 5-V LDO powers CAN/LIN PHYs with >60 dB PSRR; footprint savings improve layout density. |
Use Scenario: Powers motor control MCU and gate drivers in steer-by-wire systems requiring functional safety compliance. IC Role / Device Role / Timing Role: Safety-critical power source with dual-redundant supervision (nRST + IGN_ST) and thermal derating at 150°C junction. Use Value: Voltage monitoring of all three regulated rails satisfies ASIL-B diagnostic coverage requirements; HTSSOP package enables conformal coating for harsh environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multi-rail automotive power management applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS65381AQ1 | Higher integration: adds 3.3-V/1.2-V LDOs (not controller-based), integrated watchdog, and SPI interface | Replaces external transistors but increases BOM cost; lacks IGN_EN direct interface | Choose for systems needing digital configuration and higher integration; avoid if external BJT cost optimization is critical |
| LM63625Q1 | Single 2.5-A buck only (no linear regulators or supervision); 3.5-MHz max frequency; smaller 10-pin WSON | Requires external LDOs and reset IC; suitable for simpler subsystems with fewer rails | Choose for space-constrained non-safety-critical loads where only one regulated rail is needed |
Compared with TPS65300QRHFRQ1, TPS65381AQ1 offers greater integration at higher cost and complexity, while LM63625Q1 provides lower-cost buck-only functionality without supervision or multi-rail support-making TPS65300QRHFRQ1 the optimal balance of integration, automotive qualification, and external component flexibility.
Availability
TPS65300QRHFRQ1 is available at Aetrix Electronics and suitable for engine control units, ADAS domain controllers, and body control modules requiring stable component supply across extended automotive temperature ranges and long production lifecycles.
Supply support for TPS65300QRHFRQ1 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-grade power solutions with over 40 years of automotive qualification experience.
The TPS65300-Q1 product line was designed specifically for functional-safety-aware automotive microcontroller power supplies, emphasizing integrated supervision, ignition-compatible enablement, and thermal resilience in harsh under-hood environments.
FAQ
What is the maximum input voltage rating for TPS65300QRHFRQ1?
The TPS65300QRHFRQ1 has an absolute maximum input voltage rating of 45 V on VIN and VIN_D pins, supporting automotive battery transients per ISO 7637-2 Pulse 5a. Its recommended operating range is 5.6 V to 40 V, making it suitable for both 12 V and 24 V vehicle architectures. Operation above 40 V is limited to short-duration transients only.
How does the TPS65300QRHFRQ1 implement voltage supervision and reset generation?
The TPS65300QRHFRQ1 continuously monitors VREG (5.3 V), 3.3VSENSE, and 1.2VSENSE against 90% of their nominal values. If any monitored rail drops below its threshold, the open-drain nRST output is actively pulled low. The release of nRST is delayed by an external capacitor on the DELAY pin, charged by a 1.4–2.6 µA current source once all rails are stable.
Can TPS65300QRHFRQ1 drive external NPN transistors for the 3.3-V and 1.234-V rails?
Yes, TPS65300QRHFRQ1 provides dedicated current-source outputs-3.3VDRIVE and 1.2VDRIVE-to directly drive the bases of external NPN transistors. Each delivers 10–50 mA source current and includes protection against short circuits. The corresponding sense inputs (3.3VSENSE and 1.2VSENSE) provide feedback and initiate foldback if voltage drops to ~1.65 V or ~0.6 V respectively.
What package options are available for TPS65300QRHFRQ1 and how do they differ thermally?
TPS65300QRHFRQ1 is offered in HTSSOP-24 (PWP) and VQFN-24 (RHF) packages. The HTSSOP has RθJA = 33.6°C/W and RθJB = 14.5°C/W; the VQFN has RθJA = 30.3°C/W and RθJB = 8.7°C/W. Both require soldering the exposed thermal pad to a PCB ground plane for optimal thermal performance, with VQFN offering superior board-side conduction.
Does TPS65300QRHFRQ1 support external clock synchronization?
Yes, the RT/CLK pin supports both resistor-programmed oscillator mode (2–3 MHz) and external clock synchronization. When an external clock signal is applied, the TPS65300QRHFRQ1 detects positive edges and locks to the input frequency with ±20% tolerance. If the external clock is removed, it automatically reverts to its internal 2.2-MHz oscillator.
TPS65300QRHFRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 24-VFQFN Exposed Pad
- 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:
- 5.3V, 1.2A
- Voltage/Current - Output 2:
- 5V, 350mA
- Voltage/Current - Output 3:
- 3.3V, 350mA
- 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-VQFN (5x4)
TPS65300QRHFRQ1 FAQ
1.How can I place an order for TPS65300QRHFRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS65300QRHFRQ1 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 TPS65300QRHFRQ1 reliable?
The price and inventory of TPS65300QRHFRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS65300QRHFRQ1 is usually 5 days.
3.What payment methods are accepted for TPS65300QRHFRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS65300QRHFRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS65300QRHFRQ1?
TPS65300QRHFRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS65300QRHFRQ1 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 TPS65300QRHFRQ1?
For technical support, including TPS65300QRHFRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS65300QRHFRQ1 requirements.
6.How does Aetrix verify that TPS65300QRHFRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS65300QRHFRQ1 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 TPS65300QRHFRQ1 meets industry standards.
7.What is the process for return or replacement of TPS65300QRHFRQ1?
All TPS65300QRHFRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS65300QRHFRQ1, 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 TPS65300QRHFRQ1 part is unused and in its original packaging.
Return procedure for TPS65300QRHFRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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