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Texas Instruments TPS62402QDRCRQ1
- Part No.:
- TPS62402QDRCRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
TPS62402QDRCRQ1.pdf
- Description:
- IC REG BUCK ADJ/3.3V DL 10VSON
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
TPS62402QDRCRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive-qualified dual synchronous step-down DC-DC converter delivering 400 mA on Channel 1 (VOUT1 = 1.2 V or 1.8 V, selectable via DEF_1 pin) and 600 mA on Channel 2 (VOUT2 = 3.3 V fixed), operating from 2.5 V to 6 V input with 2.25-MHz fixed-frequency PWM or PFM power-save mode. It enables dynamic voltage scaling in infotainment processors and ADAS domain controllers.
For engineers reviewing the TPS62402QDRCRQ1 datasheet, TPS62402QDRCRQ1 pinout, TPS62402QDRCRQ1 application, or TPS62402QDRCRQ1 equivalent, key selection criteria include its dual-rail automotive-grade output configuration, 180° out-of-phase operation for reduced input ripple, ±1% output accuracy in PWM mode, 32-μA typical quiescent current for both converters, and EasyScale™ one-wire interface support for runtime voltage adjustment.
Technical Context
The TPS62402QDRCRQ1 integrates two independent voltage-mode synchronous buck regulators sharing a 2.25-MHz oscillator with 180° phase shift between channels to minimize input capacitor RMS current. Each channel features internal P- and N-channel MOSFETs with rDS(on) of 280 mΩ (P) and 200 mΩ (N) at VIN = 3.6 V, plus dual current limiting and thermal shutdown at 150°C.
Operation supports three modes: automatic PFM/PWM transition (MODE/DATA = low), forced PWM (MODE/DATA = high), and shutdown (EN1 = EN2 = low). Output voltage selection for Channel 1 is digital (DEF_1 = low → 1.2 V; DEF_1 = high → 1.8 V); Channel 2 is fixed at 3.3 V, with ADJ2 tied directly to VOUT2. The EasyScale™ interface uses MODE/DATA as bidirectional serial line for real-time VOUT1/VOUT2 reprogramming.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 2.5 V to 6 V - supports direct connection to automotive battery (cold-crank down to 2.5 V) and 3.3/5 V rails without pre-regulation. |
| VOUT1 Options | 1.2 V or 1.8 V (pin-selectable via DEF_1) - matches common core voltages for ARM Cortex-A/R cores and DSPs in automotive clusters. |
| VOUT2 | Fixed 3.3 V - powers I/O peripherals, CAN transceivers, and sensors requiring stable 3.3-V supply. |
| IOUT1 / IOUT2 | 400 mA / 600 mA - sufficient for dual-rail SoC subsystems including display controllers and camera ISPs. |
| Switching Frequency | 2.25 MHz (fixed) - enables use of compact 2.2-μH inductors and 10-μF ceramic output capacitors for space-constrained automotive modules. |
| Efficiency Peak | Up to 95% - achieved at mid-load with VIN = 3.7 V, reducing thermal load in sealed enclosures. |
| Quiescent Current | 32 μA (both converters, no load, PFM mode) - extends battery runtime during vehicle sleep mode. |
Pinout & Package
TPS62402QDRCRQ1 is housed in a thermally enhanced 10-pin VSON (DRC) package measuring 3.0 mm × 3.0 mm with exposed thermal pad (connected to GND).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power input | Accepts 2.5–6 V supply; requires local 10-μF ceramic decoupling; connects to internal LDOs and gate drivers. |
| EN1 / EN2 | Enable inputs | Active-high logic controls startup/shutdown of each converter independently; must be terminated to avoid floating. |
| MODE/DATA | Mode control & serial interface | Low = auto PFM/PWM; High = forced PWM; bidirectional EasyScale™ line for runtime VOUT programming. |
| DEF_1 | Digital voltage select | High = VOUT1 = 1.8 V; Low = VOUT1 = 1.2 V - sets core rail for processor DVFS without external resistors. |
| FB1 | Feedback sense | Direct connection to VOUT1; internal resistor divider used for fixed-output versions; not adjustable externally. |
| ADJ2 | Converter 2 adjust | Tied directly to VOUT2 (3.3 V); no external components required; enables EasyScale™ reprogramming of VOUT2. |
| SW1 / SW2 | Power switch nodes | Connect to 2.2-μH inductors; require low-ESR ceramic output caps; SW pins sink/source peak currents up to 1.15 A. |
| GND | Ground reference | Common return for both converters; must be connected to PCB thermal pad for thermal performance (RθJB = 18.1°C/W). |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Rated for –40°C to +125°C junction temperature - validated for under-hood and dashboard-mounted automotive ECUs. |
| 180° out-of-phase operation | Reduces input ripple current by ~30% vs. in-phase dual bucks - allows smaller input capacitors and lower EMI filter cost. |
| EasyScale™ one-wire interface | Enables dynamic VOUT1/VOUT2 reconfiguration during system operation - supports adaptive power management in ADAS vision processing. |
| 100% duty-cycle capability | Supports ultra-low dropout operation (e.g., VOUT1 = 1.8 V with VIN = 1.9 V) - critical for battery brownout resilience. |
| Power-save mode (PFM) | 32-μA quiescent current at light load - meets ISO 16750-2 sleep current requirements for always-on automotive modules. |
Applications
| Infotainment Processor Core Supply | ADAS Camera ISP Power |
|---|---|
|
Use Scenario: Dual-rail power for ARM-based infotainment SoCs requiring separate 1.2-V core and 3.3-V I/O supplies. IC Role / Device Role / Timing Role: Primary dual-output DC-DC regulator providing tightly regulated, low-noise power rails synchronized to SoC DVFS commands. Use Value: Pin-selectable 1.2 V / 1.8 V on VOUT1 enables seamless core voltage scaling; 3.3-V VOUT2 powers HDMI PHY, USB, and audio codecs without secondary regulators. |
Use Scenario: Power delivery to image signal processors in surround-view camera modules operating in wide ambient temperature ranges. IC Role / Device Role / Timing Role: Automotive-grade dual buck supplying 1.2-V ISP core and 3.3-V sensor interface, with thermal shutdown protection at 150°C. Use Value: 2.25-MHz switching avoids AM radio band interference; 95% peak efficiency minimizes heat in sealed camera housings. |
| Cluster Microcontroller Auxiliary Rails | Automotive Telematics Modem Supply |
|
Use Scenario: Generating auxiliary 1.8-V and 3.3-V rails for microcontroller peripherals (CAN FD, LIN, SPI flash) in digital instrument clusters. IC Role / Device Role / Timing Role: Compact dual converter replacing discrete single-channel solutions to reduce BOM count and PCB area. Use Value: 3.0 mm × 3.0 mm VSON package fits tight cluster layouts; 1.2-μA shutdown current meets OEM low-power standby specs. |
Use Scenario: Powering LTE/C-V2X modems requiring stable 1.2-V core and 3.3-V RF interface in telematics control units (TCUs). IC Role / Device Role / Timing Role: Dual-output regulator supporting modem DVFS and fast wake-up from deep-sleep states. Use Value: EasyScale™ interface allows host MCU to dynamically adjust VOUT1 during modem transmission bursts, optimizing power efficiency. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output automotive buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62404QDRCRQ1 | VOUT1 defaults to 1.9 V (DEF_1 = high) or 1.2 V (DEF_1 = low); same 3.3-V VOUT2 and 400/600-mA ratings. | Better suited for higher-core-voltage MCUs (e.g., RH850/P1x series) requiring 1.9-V supply instead of 1.8 V. | Select when 1.9-V core rail is required; pin-compatible and functionally identical except for default VOUT1 setting. |
| LM61480QRHFRQ1 | Single 8-A buck with external compensation; no integrated second channel or EasyScale™; higher IOUT but larger solution size. | Used where higher current or design flexibility outweighs need for dual-rail integration and small footprint. | Choose only if >600 mA per rail is needed or if separate optimization of each rail's loop response is mandatory. |
Compared with TPS62402QDRCRQ1, TPS62404QDRCRQ1 offers identical packaging, pinout, and feature set but targets 1.9-V core logic, while LM61480QRHFRQ1 trades integration and footprint for higher single-rail current and design adaptability - making TPS62402QDRCRQ1 optimal for space-constrained dual-rail automotive systems.
Availability
TPS62402QDRCRQ1 is available at Aetrix Electronics and suitable for automotive infotainment, ADAS camera modules, and digital instrument clusters requiring stable component supply across extended temperature and long product lifecycles.
Supply support for TPS62402QDRCRQ1 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 company specializing in analog and embedded processing technologies, with leadership in automotive power management ICs and AEC-Q100 qualified products.
The TPS6240x-Q1 product line delivers highly integrated dual-output DC-DC converters designed specifically for automotive infotainment, ADAS, and body electronics applications demanding high efficiency, small solution size, and robust qualification.
FAQ
What is the default output voltage configuration of TPS62402QDRCRQ1?
The TPS62402QDRCRQ1 has fixed dual outputs: Channel 1 (VOUT1) defaults to 1.2 V when DEF_1 is pulled low, or 1.8 V when DEF_1 is pulled high; Channel 2 (VOUT2) is fixed at 3.3 V. No external feedback resistors are required - ADJ2 is tied directly to VOUT2, and FB1 connects internally to the fixed-divider network. This configuration eliminates tuning overhead for automotive production designs.
Does TPS62402QDRCRQ1 support dynamic voltage scaling during operation?
Yes, TPS62402QDRCRQ1 supports real-time dynamic voltage scaling via its EasyScale™ one-wire serial interface using the MODE/DATA pin. When either EN1 or EN2 is asserted, the interface becomes active and allows host MCU firmware to reprogram both VOUT1 and VOUT2 output voltages on-the-fly - enabling adaptive power management in automotive processors and ISPs without hardware changes.
What package type and thermal characteristics does TPS62402QDRCRQ1 use?
TPS62402QDRCRQ1 uses a 10-pin VSON (DRC) package measuring 3.0 mm × 3.0 mm with an exposed thermal pad. Its thermal metrics include RθJA = 42.7°C/W and RθJB = 18.1°C/W, enabling reliable operation up to 125°C junction temperature in automotive environments. The thermal pad must be soldered to a dedicated GND plane for optimal heat dissipation.
How does TPS62402QDRCRQ1 manage efficiency across load conditions?
TPS62402QDRCRQ1 automatically enters power-save mode (PFM) at light loads to maintain high efficiency - achieving 32-μA quiescent current for both converters. At medium-to-heavy loads, it transitions seamlessly to fixed 2.25-MHz PWM operation with ±1% output accuracy. This dual-mode architecture delivers up to 95% peak efficiency while meeting stringent automotive sleep-current requirements.
Is TPS62402QDRCRQ1 compatible with standard 3.3-V and 5-V input rails?
Yes, TPS62402QDRCRQ1 operates from 2.5 V to 6 V input, making it fully compatible with standard automotive 3.3-V and 5-V supply rails, as well as direct connection to Li-ion battery stacks (3.0–4.2 V) and cold-crank scenarios down to 2.5 V. Its 100% duty-cycle capability further ensures regulation during low-input transients without dropout.
TPS62402QDRCRQ1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable (Fixed)
- Number of Outputs:
- 2
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 1.2V, 1.8V (3.3V)
- Voltage - Output (Max):
- -
- Current - Output:
- 400mA, 600mA
- Frequency - Switching:
- 2.3MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-VSON (3x3)
TPS62402QDRCRQ1 FAQ
1.How can I place an order for TPS62402QDRCRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62402QDRCRQ1 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 TPS62402QDRCRQ1 reliable?
The price and inventory of TPS62402QDRCRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62402QDRCRQ1 is usually 5 days.
3.What payment methods are accepted for TPS62402QDRCRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62402QDRCRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62402QDRCRQ1?
TPS62402QDRCRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62402QDRCRQ1 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 TPS62402QDRCRQ1?
For technical support, including TPS62402QDRCRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62402QDRCRQ1 requirements.
6.How does Aetrix verify that TPS62402QDRCRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS62402QDRCRQ1 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 TPS62402QDRCRQ1 meets industry standards.
7.What is the process for return or replacement of TPS62402QDRCRQ1?
All TPS62402QDRCRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS62402QDRCRQ1, 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 TPS62402QDRCRQ1 part is unused and in its original packaging.
Return procedure for TPS62402QDRCRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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