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Texas Instruments TPS62405QDRCRQ1
- Part No.:
- TPS62405QDRCRQ1
- Manufacturer:
- Texas Instruments
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
TPS62405QDRCRQ1.pdf
- Description:
- IC REG BUCK ADJ 400MA DL 10VSON
- Quantity:
- Payment:
- Shipping:
Inventory:2,596
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Product details
Overview
TPS62405QDRCRQ1 from Texas Instruments is an AEC-Q100 Grade 1 qualified dual synchronous step-down DC-DC converter for automotive infotainment and ADAS systems, delivering 400 mA on OUT1 (1.215 V or 1.925 V selectable) and 600 mA on OUT2 (3.35 V fixed), operating from 2.5 V to 6 V input with 2.25-MHz fixed-frequency PWM mode and power-save mode at light loads.
For engineers reviewing the TPS62405QDRCRQ1 datasheet, TPS62405QDRCRQ1 pinout, TPS62405QDRCRQ1 application, or TPS62405QDRCRQ1 equivalent, key selection criteria include dual-rail voltage configuration via DEF_1 pin, 180° out-of-phase operation for reduced input ripple, ±1% output accuracy in PWM mode, 32-μA typical quiescent current for both converters, and thermal shutdown at 150°C with 20°C hysteresis.
Technical Context
The TPS62405QDRCRQ1 integrates two independent voltage-mode synchronous buck converters sharing a 2.25-MHz oscillator with 180° phase shift, enabling interleaved operation to reduce input RMS current and capacitor stress. Each converter features P-channel and N-channel MOSFETs with integrated current limiting (0.68–0.92 A for OUT1, 0.85–1.15 A for OUT2) and internal compensation.
Converter 1 supports digital voltage selection via DEF_1 pin (1.215 V low / 1.925 V high), while Converter 2 provides fixed 3.35 V output; both support EasyScale™ one-wire interface for dynamic voltage scaling. MODE/DATA pin controls PFM/PWM mode selection and serves as bidirectional serial interface with open-drain acknowledge.
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. |
| OUT1 Current / Voltage | 400 mA @ 1.215 V or 1.925 V - pin-selectable dual fixed outputs for processor core and I/O rail sequencing. |
| OUT2 Current / Voltage | 600 mA @ 3.35 V - dedicated fixed output for peripherals, sensors, or interface logic. |
| Switching Frequency | 2.25 MHz (typ) - enables use of compact 2.2 μH inductors and ceramic capacitors for space-constrained automotive modules. |
| Quiescent Current | 32 μA (both converters, no load, PFM mode) - extends battery runtime in always-on vehicle subsystems. |
| Output Accuracy | ±1% in PWM mode - ensures stable power delivery to sensitive analog and digital circuits without external calibration. |
| Thermal Shutdown | 150°C with 20°C hysteresis - protects against sustained overload or poor PCB thermal design in under-hood environments. |
Pinout & Package
TPS62405QDRCRQ1 is housed in a 10-pin VSON package (3.0 mm × 3.0 mm) with exposed thermal pad connected to GND for enhanced thermal performance in automotive applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ADJ2 | Converter 2 feedback adjust | Must be shorted to VOUT2 in fixed-output mode; not used for external resistor setting in TPS62405QDRCRQ1. |
| DEF_1 | Converter 1 voltage select | Digital input: low = 1.215 V, high = 1.925 V - enables simple dynamic voltage scaling without external components. |
| EN1 / EN2 | Independent enable inputs | Active-high control for staggered startup, power sequencing, or fault-isolation between rails. |
| FB1 | Converter 1 feedback sense | Internally connected to fixed resistor divider; must tie directly to VOUT1 for regulation stability. |
| MODE/DATA | Mode control & serial interface | Low = auto PFM/PWM; high = forced PWM; also carries EasyScale™ commands with open-drain ACK. |
| SW1 / SW2 | Power switch nodes | Connect to 2.2 μH inductors; require low-ESR ceramic output caps (2 × 10 μF per rail) and feedforward cap (33 pF) on SW2. |
| VIN | Main power input | Accepts 2.5–6 V with undervoltage lockout (UVLO) threshold of 2.4 V (rising) to prevent brownout operation. |
| GND | Power and signal ground | Shared reference for both converters; thermal pad must be soldered to PCB ground plane for RθJC(bot) = 3.1°C/W. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Grade 1 qualification | Rated for –40°C to +125°C junction temperature - validated for engine bay and dashboard-mounted automotive electronics. |
| 180° out-of-phase dual operation | Reduces input ripple current by ~30% vs. in-phase operation - lowers required input capacitance and EMI filter size. |
| EasyScale™ one-wire interface | Enables real-time output voltage adjustment of both rails using single MODE/DATA pin - eliminates need for I²C/SPI controllers. |
| 100% duty cycle capability | Supports dropout operation down to VIN – VOUT ≈ 0 V - critical for maintaining 3.35 V rail during cold-crank (VIN = 3.2 V). |
| Integrated power-save mode | Automatically transitions from PWM to PFM below ~12.5 mA load (VIN/32 Ω) - maintains >85% efficiency at 1 mA output. |
Applications
| Infotainment Power Management | ADAS Camera Module Supply |
|---|---|
|
Use Scenario: Dual-rail power for SoC (core + I/O) and display interface in head-unit or digital cluster. IC Role / Device Role / Timing Role: Primary dual-buck regulator providing independently controlled 1.215 V/1.925 V and 3.35 V rails with sequencing via EN1/EN2. Use Value: Eliminates need for discrete LDOs or second IC; 2.25-MHz switching allows <10 mm² total solution size including magnetics. |
Use Scenario: Compact, low-noise power for CMOS image sensor and ISP in forward-facing camera module. IC Role / Device Role / Timing Role: Synchronous buck converter delivering 3.35 V @ 600 mA to sensor analog front-end and 1.215 V @ 400 mA to digital core. Use Value: 180° phase shift minimizes conducted EMI into sensitive analog video path; ±1% accuracy ensures consistent sensor gain calibration. |
| Automotive Telematics Unit | Body Control Module Subsystem |
|
Use Scenario: Powering LTE modem, GNSS receiver, and microcontroller in connected car gateway. IC Role / Device Role / Timing Role: Dual-output DC-DC supplying 1.925 V to RF transceiver and 3.35 V to MCU/peripherals with independent enable control. Use Value: 32-μA quiescent current enables >10-year battery backup for GPS tracking during vehicle sleep mode. |
Use Scenario: Distributed power for door module ECUs requiring separate low-voltage logic and actuator drive rails. IC Role / Device Role / Timing Role: Dual buck converter generating 1.215 V for MCU core and 3.35 V for CAN transceiver and LIN interface. Use Value: AEC-Q100 qualification ensures reliability across 15-year vehicle lifecycle; thermal shutdown prevents latch-up during load dump events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62402QDRCRQ1 | OUT1 defaults to 1.2 V / 1.8 V (not 1.215 V / 1.925 V); identical package, pinout, and electrical specs otherwise. | Suitable for designs where 1.8 V core rail is preferred over 1.925 V for legacy SoCs or lower power consumption. | Select when exact 1.925 V is not required and cost optimization favors higher-volume variant. |
| TPS62404QDRCRQ1 | OUT1 defaults to 1.2 V / 1.9 V (vs. 1.215 V / 1.925 V); same 3.3 V OUT2 (not 3.35 V); otherwise identical functionality. | Better matched to processors specifying nominal 1.9 V core voltage; 3.3 V rail aligns with standard I/O voltage references. | Choose for compatibility with existing 1.9 V/3.3 V reference designs or where tighter tolerance on 3.3 V is needed. |
Compared with TPS62405QDRCRQ1, TPS62402QDRCRQ1 offers marginally lower core voltage options but lacks the precise 1.925 V required for newer automotive SoCs, while TPS62404QDRCRQ1 trades 3.35 V accuracy for broader 3.3 V compatibility-neither is pin-compatible without firmware or layout revision due to different default voltage mappings.
Availability
TPS62405QDRCRQ1 is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS camera modules, telematics gateways, and body control units requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TPS62405QDRCRQ1 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 management solutions, with decades of automotive qualification expertise and broad AEC-Q100 portfolio coverage.
The TPS6240x-Q1 product line was designed specifically for automotive subsystems requiring dual independent power rails with high efficiency, small footprint, and robust thermal performance in harsh environments.
FAQ
What is the default output voltage configuration of TPS62405QDRCRQ1?
The TPS62405QDRCRQ1 has two fixed output voltages: OUT1 is selectable between 1.215 V (DEF_1 = low) and 1.925 V (DEF_1 = high), while OUT2 is fixed at 3.35 V. These values are factory-trimmed and do not require external resistors - the ADJ2 pin must be tied directly to VOUT2, and FB1 must connect to VOUT1 for regulation.
Does TPS62405QDRCRQ1 support dynamic voltage scaling during operation?
Yes, TPS62405QDRCRQ1 supports real-time dynamic voltage scaling via its EasyScale™ one-wire serial interface on the MODE/DATA pin. This allows software-controlled adjustment of both OUT1 and OUT2 voltages without requiring additional communication buses or external DACs - the interface uses open-drain acknowledge with 400–520 μs pulse width.
What is the thermal performance of TPS62405QDRCRQ1 in automotive environments?
TPS62405QDRCRQ1 features a 10-pin VSON package with exposed thermal pad, achieving RθJC(bot) = 3.1°C/W and RθJA = 42.7°C/W. It includes thermal shutdown at 150°C with 20°C hysteresis, and is qualified to AEC-Q100 Grade 1 (–40°C to +125°C TJ), making it suitable for under-dash and engine-compartment-adjacent placements with proper PCB copper area.
How does the MODE/DATA pin function in TPS62405QDRCRQ1?
The MODE/DATA pin on TPS62405QDRCRQ1 serves dual roles: when held low, it enables automatic power-save mode (PFM at light loads, PWM at heavy loads); when pulled high, it forces fixed-frequency PWM operation across all loads. It also functions as the bidirectional EasyScale™ serial interface for output voltage programming, with open-drain acknowledge capability.
Can TPS62405QDRCRQ1 operate with input voltage as low as 2.5 V?
Yes, TPS62405QDRCRQ1 operates across 2.5 V to 6 V input range and includes undervoltage lockout (UVLO) with rising threshold at 2.4 V. At VIN = 2.5 V, it sustains 1.215 V output with 100% duty cycle, enabling reliable operation during automotive cold-crank events where battery voltage dips below 3 V.
TPS62405QDRCRQ1 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):
- 1.215V, 1.925V (3.35V)
- Voltage - Output (Max):
- -
- Current - Output:
- 400mA, 600mA
- Frequency - Switching:
- 2.2MHz
- 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)
TPS62405QDRCRQ1 FAQ
1.How can I place an order for TPS62405QDRCRQ1 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62405QDRCRQ1 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 TPS62405QDRCRQ1 reliable?
The price and inventory of TPS62405QDRCRQ1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62405QDRCRQ1 is usually 5 days.
3.What payment methods are accepted for TPS62405QDRCRQ1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62405QDRCRQ1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62405QDRCRQ1?
TPS62405QDRCRQ1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62405QDRCRQ1 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 TPS62405QDRCRQ1?
For technical support, including TPS62405QDRCRQ1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62405QDRCRQ1 requirements.
6.How does Aetrix verify that TPS62405QDRCRQ1 is sourced from the original manufacturer or authorized distributors?
All TPS62405QDRCRQ1 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 TPS62405QDRCRQ1 meets industry standards.
7.What is the process for return or replacement of TPS62405QDRCRQ1?
All TPS62405QDRCRQ1 units undergo pre-shipment inspection (PSI). If there is an issue with TPS62405QDRCRQ1, 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 TPS62405QDRCRQ1 part is unused and in its original packaging.
Return procedure for TPS62405QDRCRQ1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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