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Texas Instruments TPS62422QDRCRQ1
- Part No.:
- TPS62422QDRCRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
TPS62422QDRCRQ1.pdf
- Description:
- IC REG BUCK 1.15V/1.2V DL 10VSON
- Quantity:
- Payment:
- Shipping:
Inventory:2,850
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Product details
Overview
TPS62422QDRCRQ1 from Texas Instruments is an AEC-Q100 Grade 1 automotive dual synchronous step-down DC-DC converter delivering 1000 mA on Channel 1 (VOUT1 = 1.8 V or 1.15 V selectable via DEF_1) and 600 mA on Channel 2 (VOUT2 = 1.2 V fixed), operating at 2.25 MHz with ±1% PWM output accuracy and 32-μA typical quiescent current for both channels. It powers CMOS image sensors and SerDes in ADAS camera modules.
For engineers reviewing the TPS62422QDRCRQ1 datasheet, TPS62422QDRCRQ1 pinout, TPS62422QDRCRQ1 application, or TPS62422QDRCRQ1 equivalent, key selection criteria include dual-channel automotive-grade efficiency (up to 95%), 180° out-of-phase operation for reduced input ripple, EasyScale™ one-pin dynamic voltage scaling, and thermal shutdown at 150°C with 20°C hysteresis.
Technical Context
The TPS62422QDRCRQ1 integrates two independent voltage-mode PWM controllers with input-voltage feed-forward, enabling fast line/load regulation and compatibility with small ceramic capacitors. Each channel features dual MOSFET current limiting (P-channel: typ. 280 mΩ; N-channel: typ. 200 mΩ) and automatic transition between PWM and PFM modes based on load current thresholds derived from VIN/32 Ω.
Its 180° phase-shifted switching reduces RMS input current ripple, while the MODE/DATA pin serves dual functions: PWM/PSM mode selection and bidirectional EasyScale™ serial communication (address 0x4E) supporting dynamic VOUT1/VOUT2 reconfiguration without external components. The internal 600-mV reference enables precise feedback via FB1 and ADJ2 pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 2.5 V to 6 V - supports direct connection to automotive 3.3-V or 5-V rails with undervoltage lockout at 2.35 V (falling) |
| Switching Frequency | 2.25 MHz fixed - enables use of compact 2.2-μH inductors and low-ESR ceramic capacitors for space-constrained ADAS modules |
| Output Accuracy (PWM) | ±1% - ensures stable power delivery to sensitive image sensor analog blocks and digital cores under varying load and temperature |
| IQ (Both Channels) | 32 μA typical - maintains ultra-low standby power in always-on camera systems without compromising wake-up response |
| Shutdown Current | 1.2 μA typical - minimizes battery drain during vehicle sleep mode when EN1/EN2 are low |
| Thermal Shutdown | 150°C with 20°C hysteresis - protects against sustained overload or poor PCB thermal design in enclosed rearview camera housings |
| Output Current | 1000 mA (CH1), 600 mA (CH2) - sufficient to power high-resolution CMOS imagers and accompanying SerDes ICs simultaneously |
Pinout & Package
VSON-10 (DRC) package, 3.00 mm × 3.00 mm body size with exposed thermal pad connected to GND for enhanced thermal dissipation in automotive ambient temperatures up to +125°C junction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ADJ2 (Pin 1) | Feedback sense for Channel 2 | Must connect directly to VOUT2 node; required for EasyScale™ operation on CH2 and precision regulation |
| DEF_1 (Pin 5) | Digital select for CH1 output voltage | High = 1.8 V, Low = 1.15 V; must be terminated-floating causes undefined VOUT1 behavior |
| EN1 / EN2 (Pins 7, 9) | Independent enable inputs | Active-high control allows staggered startup and independent power sequencing for sensor + SerDes subsystems |
| FB1 (Pin 4) | Feedback sense for Channel 1 | Connects directly to VOUT1; internal 600-mV reference enables accurate closed-loop regulation |
| MODE/DATA (Pin 2) | Multi-function I/O | Low = PFM mode; High = forced PWM; also carries EasyScale™ commands (address 0x4E) with open-drain ACK |
| SW1 / SW2 (Pins 6, 10) | Power switch nodes | Drive external 2.2-μH inductors; require low-ESR input/output caps placed adjacent to minimize loop area and EMI |
| VIN (Pin 3) | Main power input | Accepts 2.5–6 V; requires local 10-μF ceramic capacitor between VIN and GND to suppress high-frequency noise |
| GND (Pin 8) + Thermal Pad | Common ground reference | Thermal pad must be soldered to large GND plane for thermal management and EMI reduction |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Validated for –40°C to +125°C junction operation, HBM ±2000 V, CDM ±500 V - meets automotive reliability requirements for camera ECU deployment |
| 180° out-of-phase switching | Reduces input RMS current by ~30% versus in-phase operation - lowers stress on input capacitors and supply rail noise in shared power domains |
| EasyScale™ one-pin interface | Enables dynamic VOUT1/VOUT2 adjustment via MODE/DATA pin without additional GPIOs - supports low-power processor DVFS in CMS applications |
| 100% duty cycle capability | Permits operation with minimal dropout (e.g., VOUT1 = 1.8 V from VIN = 1.9 V) - extends functional uptime during cold-crank battery dips |
| Power-save mode with voltage positioning | Maintains VOUTx at +1% nominal during PFM operation - prevents brownout during sudden load transients like image capture bursts |
Applications
| ADAS Camera Module | Mirror Replacement (CMS) |
|---|---|
|
Use Scenario: Powering a 5-MP CMOS image sensor and accompanying serializer IC in a front-facing driver assistance camera. IC Role / Device Role / Timing Role: Dual-rail regulator supplying 1.8 V (sensor analog core) and 1.2 V (SerDes digital logic) with synchronized 2.25-MHz switching. Use Value: 180° phase shift minimizes input ripple into shared 5-V domain; ±1% accuracy ensures sensor ADC reference stability across temperature. |
Use Scenario: Replacing physical side mirrors with digital camera-based mirror systems requiring continuous low-power video streaming. IC Role / Device Role / Timing Role: Primary power source for image sensor and video processor, with DEF_1 pin enabling runtime VOUT1 scaling between active and standby modes. Use Value: 32-μA quiescent current enables >1-year battery-backed operation in parking mode; thermal shutdown prevents overheating in sealed mirror housings. |
| Infotainment Display Power | Automotive Cluster Processor |
|
Use Scenario: Supplying clean, regulated power to LCD timing controller and backlight driver ICs in center-stack displays. IC Role / Device Role / Timing Role: Dual-output buck converter generating 1.2 V for display interface logic and 1.8 V for embedded GPU memory interface. Use Value: Fixed 2.25-MHz frequency avoids audible noise in cabin; high efficiency (>90% at 500 mA) reduces thermal load behind dash-mounted displays. |
Use Scenario: Powering application processor cores and DDR memory interfaces in digital instrument clusters with real-time graphics rendering. IC Role / Device Role / Timing Role: Dual-channel regulator delivering 1.15 V (core) and 1.2 V (I/O) with independent EN1/EN2 control for power domain sequencing. Use Value: Independent enable pins allow staggered startup to limit inrush current; 100% duty cycle supports operation during 6-V cold-crank events. |
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 |
|---|---|---|---|
| TPS62423QDRCRQ1 | Fixed 1.5 V / 1.2 V outputs; 800 mA per channel; DEF_1 selects 1.5 V (high) or 1.2 V (low) on CH1 | Better suited for dual-core processors requiring matched 1.2–1.5 V rails; lower max current limits CH1/CH2 equally | Select when system requires symmetric current capability and tighter VOUT1 matching between modes |
| TPS62406QDRCRQ1 | Fixed 1.125 V / 1.2 V outputs; 1000 mA / 400 mA; no DEF_1 voltage selection - VOUT1 fixed regardless of pin state | Optimized for single-voltage sensor + low-current companion IC; lacks CH1 dynamic scaling flexibility | Select when CH2 current demand is ≤400 mA and CH1 voltage is static; simplifies layout by removing DEF_1 routing |
Compared with TPS62422QDRCRQ1, TPS62423QDRCRQ1 offers balanced 800-mA capability but sacrifices CH1's 1000-mA headroom, while TPS62406QDRCRQ1 provides higher CH1 current but eliminates programmable VOUT1 scaling-making TPS62422QDRCRQ1 optimal for asymmetric, dynamically scaled ADAS loads.
Availability
TPS62422QDRCRQ1 is available at Aetrix Electronics and suitable for ADAS camera modules, mirror replacement (CMS) systems, and automotive digital clusters requiring stable component supply with AEC-Q100 compliance and long-term automotive lifecycle support.
Supply support for TPS62422QDRCRQ1 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 deep expertise in automotive power management and functional safety solutions.
The TPS624xx-Q1 product line was designed specifically for Advanced Driver Assistance Systems, delivering compact, efficient, and AEC-Q100-qualified dual-output power conversion for CMOS image sensors and high-speed SerDes interfaces.
FAQ
What are the default output voltages of the TPS62422QDRCRQ1?
The TPS62422QDRCRQ1 has fixed output voltages: Channel 1 defaults to 1.8 V when DEF_1 is high and 1.15 V when DEF_1 is low; Channel 2 is fixed at 1.2 V. These values are confirmed in the Device Comparison Table and Pin Functions section of the official datasheet. The ADJ2 pin must connect directly to VOUT2 for proper regulation, and FB1 must connect to VOUT1. Both outputs maintain ±1% accuracy in PWM mode across –40°C to +125°C.
How does the MODE/DATA pin function in the TPS62422QDRCRQ1?
The MODE/DATA pin on the TPS62422QDRCRQ1 serves two critical roles: pulling it low enables automatic power-save mode (PFM at light loads), while pulling it high forces fixed-frequency PWM operation across all loads. It also implements the EasyScale™ one-pin serial interface (address 0x4E) for dynamic VOUT1/VOUT2 reconfiguration. The pin features open-drain acknowledge output with 400–520 μs duration, and its operation requires EN1 or EN2 to be high for interface activation.
What is the purpose of the DEF_1 pin on the TPS62422QDRCRQ1?
The DEF_1 pin on the TPS62422QDRCRQ1 is a digital input that selects between two factory-programmed output voltages for Channel 1: 1.8 V (DEF_1 = high) or 1.15 V (DEF_1 = low). This enables dynamic voltage scaling for low-power processors in camera ECUs without external resistors. The pin must be terminated-leaving it floating results in undefined VOUT1 behavior. Its function is independent of Channel 2, which remains fixed at 1.2 V.
Does the TPS62422QDRCRQ1 support 100% duty cycle operation?
Yes, the TPS62422QDRCRQ1 supports 100% duty cycle operation, allowing it to maintain regulation even when input voltage approaches the output voltage-critical during automotive cold-crank conditions where VIN may dip to ~1.9 V. This feature ensures uninterrupted power to the 1.15 V or 1.8 V rail without dropout, preserving functionality of image sensors and SerDes links during engine start. The specification is verified in the Electrical Characteristics table under "100% duty cycle for lowest dropout" in the datasheet.
What thermal protection features does the TPS62422QDRCRQ1 include?
The TPS62422QDRCRQ1 includes thermal shutdown at 150°C (typical) with 20°C hysteresis, ensuring safe operation under overload or poor PCB thermal design. When junction temperature exceeds this threshold, both P- and N-channel MOSFETs turn off, halting switching until temperature falls below 130°C. The device also specifies RθJA = 42.7°C/W and RθJC(bot) = 3.1°C/W, confirming effective heat transfer through the exposed thermal pad to the PCB ground plane-essential for reliable operation in sealed ADAS camera housings.
TPS62422QDRCRQ1 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:
- Fixed
- Number of Outputs:
- 2
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 1.15V, 1.2V
- Voltage - Output (Max):
- -
- Current - Output:
- 600mA, 1A
- Frequency - Switching:
- 2.25MHz
- 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)
TPS62422QDRCRQ1 FAQ
1.How can I place an order for TPS62422QDRCRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62422QDRCRQ1 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 TPS62422QDRCRQ1 reliable?
The price and inventory of TPS62422QDRCRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62422QDRCRQ1 is usually 5 days.
3.What payment methods are accepted for TPS62422QDRCRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62422QDRCRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62422QDRCRQ1?
TPS62422QDRCRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62422QDRCRQ1 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 TPS62422QDRCRQ1?
For technical support, including TPS62422QDRCRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62422QDRCRQ1 requirements.
6.How does Aetrix verify that TPS62422QDRCRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS62422QDRCRQ1 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 TPS62422QDRCRQ1 meets industry standards.
7.What is the process for return or replacement of TPS62422QDRCRQ1?
All TPS62422QDRCRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS62422QDRCRQ1, 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 TPS62422QDRCRQ1 part is unused and in its original packaging.
Return procedure for TPS62422QDRCRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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