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Texas Instruments TPS62420DRCRG4
- Part No.:
- TPS62420DRCRG4
- Manufacturer:
- Texas Instruments
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
TPS62420DRCRG4.pdf
- Description:
- IC REG BCK ADJ 0.6A/1A DL 10VSON
- Quantity:
- Payment:
- Shipping:
Inventory:1,232
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Product details
Overview
TPS62420DRCRG4 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, power-save mode, and EasyScale™ one-pin serial interface for dynamic voltage scaling. It targets portable battery-powered systems requiring compact, high-efficiency dual-rail power.
For engineers reviewing the TPS62420DRCRG4 datasheet, TPS62420DRCRG4 pinout, TPS62420DRCRG4 application, or TPS62420DRCRG4 equivalent, key selection considerations include its dual-output current capability (600 mA / 1000 mA), 10-pin VSON (3 mm × 3 mm) package, ±1% output voltage accuracy in PWM mode, 180° out-of-phase operation for reduced input ripple, and support for dynamic voltage adjustment via MODE/DATA pin.
Technical Context
The TPS62420DRCRG4 integrates two fully independent synchronous buck converters sharing a single 2.25-MHz oscillator with 180° phase shift-reducing input RMS current and easing input capacitor sizing. Each converter employs voltage-mode control with input-voltage feed-forward, enabling fast transient response and stable regulation with small ceramic capacitors.
Converter 1 uses DEF_1 as an analog input for adjustable output (0.6 V to VIN), while Converter 2 uses ADJ2 with external resistor divider and 33-pF feed-forward capacitor. Both support dynamic reconfiguration via the open-drain MODE/DATA pin using EasyScale™ protocol, and enter power-save (PFM) mode below ~10 mA load to maintain >90% efficiency at light loads.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VIN Range | 2.5 V to 6 V - supports single-cell Li-ion (2.7–4.2 V), 3-cell NiMH/NiCd, or standard 3.3 V/5 V rails without pre-regulation. |
| Output 1 (VOUT1) | Adjustable 0.6 V to VIN (typ. 1.5 V @ 600 mA) - set via external resistor network on DEF_1; enables precise core voltage tuning. |
| Output 2 (VOUT2) | Adjustable 0.6 V to VIN (typ. 1.8 V @ 1000 mA) - set via resistor divider on ADJ2 + 33-pF feed-forward cap for stability. |
| Switching Frequency | 2.25 MHz (±12.5%) - enables use of 2.2-μH inductors and 22-μF ceramic output caps; reduces solution footprint vs lower-frequency converters. |
| Efficiency | Up to 95% - achieved via synchronous rectification, low RDS(on) PMOS (280 mΩ typ.) and NMOS (200 mΩ typ.), and PFM/PWM seamless transition. |
| Quiescent Current | 32 μA (both converters, PFM mode) - extends battery life in standby; drops to 1.2 μA in shutdown (EN1 = EN2 = GND). |
| Accuracy | ±1% in PWM mode - ensures tight regulation for sensitive DSP, processor I/O, or memory supply rails without external trimming. |
| Thermal Shutdown | 150°C with 20°C hysteresis - protects against sustained overload or poor PCB thermal design; resumes operation after cooldown. |
Pinout & Package
TPS62420DRCRG4 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). The package is RoHS-compliant and moisture-sensitive level 2a.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| ADJ2 (Pin 1) | Converter 2 feedback adjust | Analog input for setting VOUT2 via external resistor divider; must connect directly to VOUT2 when using EasyScale™ interface. |
| MODE/DATA (Pin 2) | Multi-function control | Configures PFM/PWM mode (low = auto, high = forced PWM); also serves as open-drain serial data line for EasyScale™ voltage updates. |
| VIN (Pin 3) | Main power input | Supplies both converters; accepts 2.5–6 V; requires local 10-μF ceramic decoupling adjacent to pin. |
| FB1 (Pin 4) | Converter 1 feedback sense | Direct connection to VOUT1; internal 600-mV reference enables accurate regulation; no external resistors needed for fixed outputs. |
| DEF_1 (Pin 5) | Converter 1 default voltage select | Analog input in TPS62420; sets VOUT1 via external resistor network (e.g., 270kΩ/180kΩ → 1.5 V); not digital like TPS62421. |
| SW1 (Pin 6) | Converter 1 power switch node | Connects to 2.2-μH inductor; high dv/dt node requiring short, low-inductance layout to minimize EMI and switching loss. |
| EN1 (Pin 7) | Converter 1 enable | Active-high logic; independent control allows staggered startup or rail sequencing; must not float - tie to GND or VIN via resistor. |
| GND (Pin 8) | Power and signal ground | Common return for both converters; must be connected to PowerPAD™ and low-impedance ground plane for thermal and noise performance. |
| EN2 (Pin 9) | Converter 2 enable | Active-high logic; enables/disables Converter 2 independently; supports flexible power management in multi-rail systems. |
| SW2 (Pin 10) | Converter 2 power switch node | Connects to second 2.2-μH inductor; 180° phase shift vs SW1 reduces input capacitor RMS current by ~30%. |
Key Features
| Feature | Design Value |
|---|---|
| 180° out-of-phase operation | Reduces input ripple current amplitude by ~40%, allowing smaller input capacitors and lower EMI across shared VIN rail. |
| Dynamic voltage positioning (DVP) | Maintains +1% VOUT offset in PFM mode to minimize undershoot during light-to-heavy load transients (e.g., CPU wake-up). |
| EasyScale™ one-pin interface | Enables real-time VOUT1/VOUT2 adjustment without additional GPIOs or I²C lines - ideal for adaptive power in OMAP™/DSP systems. |
| 100% duty cycle capability | Supports dropout operation down to VOUT + 0.3 V (e.g., 1.5 V out at 1.8 V in), extending usable battery range in Li-ion discharge tail. |
| Integrated soft-start | Controls VOUT ramp rate (750 μs to 95% of target) to limit inrush current and prevent input rail collapse during power-up. |
| Short-circuit protection | Uses dual current limits (PMOS: 1.15 A typ., NMOS: 1.4 A typ.) to sustain safe foldback during output shorts without latch-off. |
Applications
| Smartphone Application Processor Core Supply | OMAP™ DSP Dual-Rail System |
|---|---|
Use Scenario: Powers ARM Cortex-A8/A9 CPU core (VDD_MPU) and LDO-input pre-regulator (VDD_IVA) from single Li-ion cell. IC Role / Device Role / Timing Role: Dual synchronous buck regulator delivering 1.5 V @ 600 mA (core) and 1.8 V @ 1000 mA (peripheral/I/O) with coordinated enable sequencing. Use Value: Enables dynamic voltage scaling via MODE/DATA pin during CPU frequency transitions, reducing active power by up to 35% versus fixed-voltage supplies. |
Use Scenario: Supplies OMAP3/4 SoC requiring separate 1.2 V core and 1.8 V I/O rails with tight transient response. IC Role / Device Role / Timing Role: Primary dual-output DC–DC controller; 180° phase shift minimizes input ripple into shared 3.3 V system rail. Use Value: Achieves <15 mV load transient deviation (200 mA step) due to DVP and 2.25-MHz bandwidth, meeting OMAP™ spec for VDD1/VDD2 stability. |
| Portable Media Player Audio Codec Supply | Digital Camera Image Sensor Bias Rails |
Use Scenario: Generates clean 1.5 V analog supply and 1.8 V digital supply for high-fidelity audio codec (e.g., TLV320AIC3254). IC Role / Device Role / Timing Role: Low-noise dual regulator; forced PWM mode (MODE/DATA = HIGH) eliminates PFM frequency modulation in audio band. Use Value: Delivers <10 μVrms output noise in PWM mode, preserving SNR > 102 dB in 24-bit audio playback without additional LC filtering. |
Use Scenario: Provides precision 1.5 V analog bias and 1.8 V digital interface voltage for CMOS image sensor (e.g., OV5640) in compact camera module. IC Role / Device Role / Timing Role: Compact dual-buck source with independent EN1/EN2 for sensor power sequencing (analog first, then digital). Use Value: Soft-start (170 μs startup + 750 μs ramp) prevents sensor reset glitches; ±1% accuracy ensures consistent pixel gain calibration across temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output synchronous buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62421DRCR | Fixed-output variant: VOUT1 = 1.2 V or 1.8 V (pin-selectable via DEF_1), VOUT2 = 1.8 V; no external resistor required for default settings. | Suitable for designs where fixed voltages suffice and board space for resistor networks is constrained; lacks full 0.6–VIN adjustability of TPS62420DRCRG4. | Select TPS62421DRCR when simplifying BOM and layout for known, unchanging rail requirements - saves two resistors per output but forfeits runtime flexibility. |
| TPS62932DRVR | Higher-performance successor: 4-A dual output, 2.5–18-V input, 0.8% accuracy, integrated FETs, and I²C interface; 1.5× larger 16-pin WQFN package. | Targets industrial and automotive applications needing wider VIN range, higher current, and diagnostic features (PGOOD, OTP flag); not drop-in compatible. | Choose TPS62932DRVR only for new designs requiring >1 A per rail, >6 V input, or I²C programmability - TPS62420DRCRG4 remains optimal for cost- and size-sensitive portable consumer designs. |
Compared with TPS62421DRCR, TPS62420DRCRG4 offers full analog adjustability and dynamic voltage scaling at the cost of two external resistors; versus TPS62932DRVR, it provides proven 2.25-MHz efficiency in ultra-compact 3×3 mm form factor but lacks I²C and extended voltage/current range.
Availability
TPS62420DRCRG4 is available at Aetrix Electronics and suitable for smartphone power management, OMAP™ DSP supply, portable media player audio subsystems, digital camera sensor biasing, and battery-powered embedded systems requiring stable component supply with long-term lifecycle support.
Supply support for TPS62420DRCRG4 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 over 90 years of innovation in energy-efficient electronics.
The TPS6242x product line was designed specifically for space-constrained, battery-operated portable devices requiring high-efficiency dual-rail power conversion with dynamic voltage scaling - targeting smartphones, PDAs, and multimedia players launched between 2006–2015.
FAQ
What is the maximum output current capability of each channel in TPS62420DRCRG4?
The TPS62420DRCRG4 delivers up to 600 mA on Output 1 (VOUT1) and up to 1000 mA on Output 2 (VOUT2) under typical conditions (VIN = 3.6 V, TA = 25°C, 2.2-μH inductor, 22-μF output capacitor). Peak current limits are 1.15 A (PMOS) and 1.4 A (NMOS) per channel, with thermal derating applied above 85°C ambient.
How does the MODE/DATA pin function in TPS62420DRCRG4?
In TPS62420DRCRG4, the MODE/DATA pin serves two roles: (1) mode selection - pulled low for automatic PFM/PWM transition, pulled high for forced PWM operation; and (2) serial data interface - implements TI's EasyScale™ protocol to dynamically adjust both VOUT1 and VOUT2 during operation using a single wire with open-drain acknowledge.
Can TPS62420DRCRG4 operate with input voltage below 2.5 V?
No - the absolute minimum recommended input voltage for TPS62420DRCRG4 is 2.5 V per the datasheet's Recommended Operating Conditions. Operation below this risks undervoltage lockout activation (typ. 1.5 V threshold) and unstable regulation; the device shuts down if VIN falls below ~1.5 V and will not resume until VIN exceeds ~2.4 V.
What package type and thermal characteristics does TPS62420DRCRG4 use?
TPS62420DRCRG4 uses a 10-pin VSON package (3.00 mm × 3.00 mm, 0.5-mm pitch) with exposed PowerPAD™. Its thermal metrics include RθJA = 45.9°C/W (junction-to-ambient, JEDEC high-K board) and RθJB = 20.4°C/W (junction-to-board), enabling 2050 mW power dissipation at 25°C ambient before derating begins.
Is TPS62420DRCRG4 pin-compatible with TPS62421DRCR?
Yes - TPS62420DRCRG4 and TPS62421DRCR share identical 10-pin VSON (DRC) packaging, pinout, and footprint. However, their DEF_1 pin behavior differs: TPS62420DRCRG4 uses DEF_1 as an analog input for resistor-based VOUT1 adjustment, while TPS62421DRCR treats it as a digital select for fixed 1.2 V/1.8 V outputs.
TPS62420DRCRG4 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)
TPS62420DRCRG4 FAQ
1.How can I place an order for TPS62420DRCRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62420DRCRG4 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 TPS62420DRCRG4 reliable?
The price and inventory of TPS62420DRCRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62420DRCRG4 is usually 5 days.
3.What payment methods are accepted for TPS62420DRCRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62420DRCRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62420DRCRG4?
TPS62420DRCRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62420DRCRG4 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 TPS62420DRCRG4?
For technical support, including TPS62420DRCRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62420DRCRG4 requirements.
6.How does Aetrix verify that TPS62420DRCRG4 is sourced from the original manufacturer or authorized distributors?
All TPS62420DRCRG4 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 TPS62420DRCRG4 meets industry standards.
7.What is the process for return or replacement of TPS62420DRCRG4?
All TPS62420DRCRG4 units undergo pre-shipment inspection (PSI). If there is an issue with TPS62420DRCRG4, 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 TPS62420DRCRG4 part is unused and in its original packaging.
Return procedure for TPS62420DRCRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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