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Texas Instruments TPS62420DRCTG4
- Part No.:
- TPS62420DRCTG4
- Manufacturer:
- Texas Instruments
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
TPS62420DRCTG4.pdf
- Description:
- IC REG BCK ADJ 0.6A/1A DL 10VSON
- Quantity:
- Payment:
- Shipping:
Inventory:500
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Product details
Overview
TPS62420DRCTG4 from Texas Instruments is a synchronous dual step-down DC–DC converter IC with two independent output rails (1.5 V @ 600 mA and 1.8 V @ 1000 mA), operating from 2.5 V to 6 V input, featuring 2.25-MHz fixed-frequency PWM and automatic power-save mode for portable applications including OMAP™/DSP core supplies and smart-phone baseband power.
For engineers reviewing the TPS62420DRCTG4 datasheet, TPS62420DRCTG4 pinout, TPS62420DRCTG4 application, or TPS62420DRCTG4 equivalent, key selection considerations include dual-output dynamic voltage scaling via EasyScale™ interface, 180° out-of-phase operation for reduced input ripple, ±1% output accuracy in PWM mode, and 10-pin 3 mm × 3 mm VSON package compatibility with space-constrained embedded designs.
Technical Context
The TPS62420DRCTG4 integrates two fully synchronous buck converters sharing a 2.25-MHz oscillator with 180° phase shift between SW1 and SW2 to minimize input RMS current. Each converter uses voltage-mode control with input-voltage feed-forward and internal compensation, enabling stable regulation with small ceramic capacitors.
It supports three operational modes: automatic PFM/PWM transition (MODE/DATA = GND), forced PWM (MODE/DATA = VIN), and shutdown (EN1 = EN2 = GND). Output voltages are set externally via resistor dividers on DEF_1 (converter 1) and ADJ2 (converter 2), with dynamic adjustment possible via the open-drain EasyScale™ serial interface on MODE/DATA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.5 V to 6 V - supports single-cell Li-ion (3.0–4.2 V) and standard 3.3-V/5-V rails without external regulators. |
| Output 1 (VOUT1) | Adjustable 0.6 V to VIN - configured as 1.5 V at 600 mA max using external resistors on DEF_1 and FB1. |
| Output 2 (VOUT2) | Adjustable 0.6 V to VIN - configured as 1.8 V at 1000 mA max using external resistors on ADJ2 and feedback network. |
| Switching Frequency | 2.25 MHz (±12.5%) - enables use of compact 2.2-μH inductors and <22-μF ceramic output capacitors. |
| Efficiency Peak | Up to 95% - achieved at mid-load with 3.6-V input, reducing thermal load and extending battery runtime. |
| Quiescent Current | 32 μA (both converters, PFM mode) - maintains high light-load efficiency for always-on subsystems. |
| Output Accuracy | ±1% in PWM mode - ensures reliable logic-level compliance for DSP, FPGA, and processor core supplies. |
Pinout & Package
TPS62420DRCTG4 is housed in a thermally enhanced 10-pin VSON package (3.00 mm × 3.00 mm, 0.5-mm pitch) with exposed PowerPAD™ for low thermal resistance (RθJB = 20.4°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ADJ2 (Pin 1) | Converter 2 feedback adjust | Analog input for external resistor divider to set VOUT2; must connect directly to VOUT2 when using EasyScale™. |
| MODE/DATA (Pin 2) | Mode select / serial interface | Open-drain bidirectional pin: sets PFM/PWM mode or receives 1-wire EasyScale™ commands for dynamic voltage scaling. |
| VIN (Pin 3) | Main power input | Supplies both converters; accepts 2.5–6 V with integrated UVLO (1.5–2.35 V threshold) to prevent brownout operation. |
| FB1 (Pin 4) | Converter 1 feedback sense | Direct connection to VOUT1; internal 600-mV reference enables precise regulation of adjustable output rail. |
| DEF_1 (Pin 5) | Converter 1 default voltage select | Analog input in TPS62420DRCTG4; sets VOUT1 via external resistor network (e.g., 270kΩ/180kΩ for 1.5 V). |
| SW1 (Pin 6) | Converter 1 high-side switch node | Connects to inductor L1; integrates 280–620-mΩ P-MOS and 200–450-mΩ N-MOS for efficient switching. |
| EN1 (Pin 7) | Converter 1 enable | Active-high digital control; independent startup/shutdown allows staggered power sequencing for multi-rail systems. |
| GND (Pin 8) | Power and signal ground | Common return for both converters; must be tied to PowerPAD™ for optimal thermal and EMI performance. |
| EN2 (Pin 9) | Converter 2 enable | Active-high digital control; enables independent power management of high-current VOUT2 rail (up to 1000 mA). |
| SW2 (Pin 10) | Converter 2 high-side switch node | Connects to inductor L2; shares same MOSFET RDS(on) specs as SW1 for matched performance. |
Key Features
| Feature | Design Value |
|---|---|
| 180° out-of-phase switching | Reduces input capacitor RMS current by ~30%, allowing smaller 10-μF input ceramic instead of bulk electrolytic. |
| Dynamic voltage positioning (DVP) | Boosts output 1% above nominal in PFM mode to suppress load-step undershoot, improving transient response without external compensation. |
| EasyScale™ one-pin interface | Enables real-time VOUT1/VOUT2 reprogramming (e.g., 1.5 V → 1.35 V) during system operation for adaptive power management. |
| 100% duty-cycle low-dropout mode | Maintains regulation down to VIN – VOUT ≈ 200 mV, critical for battery end-of-life operation in portable devices. |
| Thermal shutdown with hysteresis | Triggers at 150°C junction temperature and resumes at 130°C, preventing thermal runaway during sustained high-load conditions. |
Applications
| OMAP™ Application Processor Core Supply | Smartphone Baseband Power Management |
|---|---|
Use Scenario: Powers ARM Cortex-A8/A9 cores and L2 cache in OMAP3/4 platforms requiring tightly regulated 1.2–1.5 V at up to 600 mA with fast transient response. IC Role / Device Role / Timing Role: Dual-output buck regulator providing independent, dynamically scalable VDD_MPU and VDD_IVA rails synchronized to processor DVFS states. Use Value: Enables >90% efficiency across 10 mA–600 mA load range while meeting ±1% voltage tolerance for sub-45nm process nodes. |
Use Scenario: Supplies RF transceiver, audio codec, and modem subsystems in LTE smartphones with strict noise and size constraints. IC Role / Device Role / Timing Role: Primary power source delivering 1.8 V @ 1000 mA to baseband SoC and 1.5 V @ 600 mA to auxiliary logic, with 180° phase alignment minimizing PCB-level EMI. Use Value: Reduces input ripple by 40% vs. in-phase dual bucks, eliminating need for additional ferrite beads or LC filters in compact antenna-proximate layouts. |
| Portable Media Player System-on-Chip | Digital Camera Image Signal Processor |
Use Scenario: Powers application processor, DDR memory I/O, and display controller in handheld media players requiring simultaneous dual-rail operation. IC Role / Device Role / Timing Role: Dual-channel DC–DC converter supporting independent enable/disable sequencing (EN1/EN2) for power domain isolation during sleep mode. Use Value: Achieves 32-μA quiescent current in shutdown and 1.2-μA deep-sleep current, extending battery life beyond 20 hours in standby. |
Use Scenario: Supplies high-current ISP core (1.2 V) and image sensor interface (1.8 V) in DSLR/mirrorless cameras with burst-mode current demands up to 1 A. IC Role / Device Role / Timing Role: Synchronous buck pair delivering low-noise, fast-transient power with soft-start (750-μs ramp) to prevent sensor reset glitches during power-up. Use Value: Maintains <15-mV output deviation during 100-mA/μs load steps, preserving analog signal integrity in CMOS image sensor bias paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62421DRCT | Fixed 1.2 V / 1.8 V outputs (DEF_1 digital-select); no external resistor networks required. | Suitable for designs where output voltages are static and BOM simplification is prioritized over dynamic scaling. | Select TPS62421DRCT if fixed outputs eliminate need for precision resistors and layout area is constrained. |
| TPS62932DRVR | Higher 4-MHz switching frequency, 0.6–5.5 V input, 3-A per channel, integrated FETs with lower RDS(on). | Targets next-gen portable devices needing higher current density and tighter voltage margins (±0.5%). | Choose TPS62932DRVR only when upgrading to 3-A capability and 4-MHz operation justifies redesign and cost increase. |
Compared with TPS62420DRCTG4, TPS62421DRCT offers plug-and-play simplicity for fixed-voltage systems but sacrifices EasyScale™ programmability, while TPS62932DRVR delivers higher performance at the cost of increased complexity and footprint-neither is pin-compatible, requiring PCB revision for migration.
Availability
TPS62420DRCTG4 is available at Aetrix Electronics and suitable for smartphone baseband power, OMAP™ processor core supplies, and portable media player SoC applications requiring stable component supply, long-term lifecycle support, and traceable sourcing for production programs.
Supply support for TPS62420DRCTG4 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 power management technologies, with decades of expertise in high-efficiency DC–DC conversion for portable and industrial systems.
The TPS62420DRCTG4 belongs to TI's TPS6242x family of dual synchronous buck converters designed specifically for battery-powered portable electronics requiring compact, high-efficiency, dynamically configurable dual-rail power solutions.
FAQ
What is the maximum output current supported by each channel of the TPS62420DRCTG4?
The TPS62420DRCTG4 supports up to 600 mA on output 1 (VOUT1) and up to 1000 mA on output 2 (VOUT2), as confirmed by electrical characteristics tables and typical application schematics in the SLVS676D datasheet. These ratings assume proper thermal design with the PowerPAD™ soldered to PCB copper and ambient temperature ≤85°C.
Does the TPS62420DRCTG4 support dynamic voltage scaling during operation?
Yes, the TPS62420DRCTG4 supports real-time dynamic voltage scaling via its EasyScale™ one-pin serial interface on the MODE/DATA pin. This allows host processors to adjust VOUT1 and VOUT2 on-the-fly-for example, lowering VOUT1 from 1.5 V to 1.35 V during low-activity states-without requiring hardware changes or external DACs.
What package type and thermal characteristics does the TPS62420DRCTG4 use?
The TPS62420DRCTG4 uses a 10-pin VSON package (3.00 mm × 3.00 mm) with an exposed PowerPAD™. Its thermal metrics include RθJA = 45.9°C/W and RθJB = 20.4°C/W, enabling reliable operation at full load in compact layouts when the PowerPAD™ is soldered to ≥1-in² internal ground plane.
How does the TPS62420DRCTG4 handle light-load efficiency?
The TPS62420DRCTG4 automatically enters power-save mode (PFM) at light loads, reducing quiescent current to 32 μA for both converters combined. This maintains >85% efficiency down to 10 mA load, significantly extending battery life compared to forced-PWM-only alternatives.
Can the TPS62420DRCTG4 operate with a 2.5-V input supply?
Yes, the TPS62420DRCTG4 is fully specified for operation from 2.5 V to 6 V input. At 2.5 V input, it sustains 1.5 V/600 mA and 1.8 V/1000 mA outputs with ±1% accuracy in PWM mode and supports 100% duty cycle to maintain regulation as input drops near output voltage levels.
TPS62420DRCTG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 10-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 2
- Voltage - Input (Min):
- 2.5V
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 6V
- Current - Output:
- 600mA, 1A
- Frequency - Switching:
- 2.25MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-VSON (3x3)
TPS62420DRCTG4 FAQ
1.How can I place an order for TPS62420DRCTG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62420DRCTG4 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 TPS62420DRCTG4 reliable?
The price and inventory of TPS62420DRCTG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62420DRCTG4 is usually 5 days.
3.What payment methods are accepted for TPS62420DRCTG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62420DRCTG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62420DRCTG4?
TPS62420DRCTG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62420DRCTG4 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 TPS62420DRCTG4?
For technical support, including TPS62420DRCTG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62420DRCTG4 requirements.
6.How does Aetrix verify that TPS62420DRCTG4 is sourced from the original manufacturer or authorized distributors?
All TPS62420DRCTG4 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 TPS62420DRCTG4 meets industry standards.
7.What is the process for return or replacement of TPS62420DRCTG4?
All TPS62420DRCTG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS62420DRCTG4, 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 TPS62420DRCTG4 part is unused and in its original packaging.
Return procedure for TPS62420DRCTG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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