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Texas Instruments TPS62320DRCR
- Part No.:
- TPS62320DRCR
- Manufacturer:
- Texas Instruments
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
TPS62320DRCR.pdf
- Description:
- IC REG BUCK ADJ 500MA 10VSON
- Quantity:
- Payment:
- Shipping:
Inventory:4,013
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Product details
Overview
TPS62320DRCR from Texas Instruments is an adjustable-output, 3-MHz synchronous step-down DC-DC converter in a 10-pin QFN (3 × 3 mm) package, delivering up to 500 mA output current with 86 µA quiescent current, 35 ns minimum on-time, and ±0.5% to +1.3% DC voltage accuracy over temperature - optimized for Li-ion–powered mobile phones and smart-phones.
For engineers reviewing the TPS62320DRCR datasheet, TPS62320DRCR pinout, TPS62320DRCR application, or TPS62320DRCR equivalent, key selection criteria include its adjustable feedback architecture (ADJ/ FB pins), integrated active power-down sequencing, PFM/PWM auto-mode transition, 2.7–6 V input range, and compatibility with low-profile 1 µH inductors and 4.7 µF ceramic capacitors.
Technical Context
The TPS62320DRCR employs a voltage-mode PWM controller with input voltage feed-forward for fast load/line transient response and supports seamless on-the-fly synchronization to external 3-MHz clocks via the MODE/SYNC pin. Its dual MOSFET power stage integrates P-channel (typ. 420 mΩ @ 3.6 V) and N-channel (typ. 330 mΩ @ 3.6 V) switches with independent current limits (780 mA P-MOS, 720 mA N-MOS sourcing).
It features automatic power-save mode (PFM) below ~10 mA load, fixed 3-MHz PWM operation above threshold, and integrated soft-start with 250 µs start-up time. The ADJ pin enables direct voltage programming (VOUT = 1.5 × VADJ), while FB pin accepts external resistor divider for standard adjustable regulation - both pins are functional only in TPS62320 variants, not fixed-output siblings.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7 V to 6 V - supports single-cell Li-ion (2.7–4.2 V) and 3-cell NiMH/NiCd (3.6 V nominal) battery inputs without pre-regulation. |
| Output Current | 500 mA continuous - sufficient for core logic rails of DSPs (e.g., TMS320™), application processors, and RF subsystems in portable devices. |
| Switching Frequency | 2.65–3.35 MHz (typ. 3 MHz) - enables use of sub-1-mm-height 1 µH inductors and compact 4.7 µF X5R/X7R ceramic output capacitors. |
| Quiescent Current | 86 µA in PFM mode - extends battery runtime in standby/sleep states of always-on wireless modules (e.g., Bluetooth, WLAN). |
| Output Voltage Accuracy | −0.5% to +1.3% over −40°C to +85°C - ensures stable core voltage for low-voltage microcontrollers and memory interfaces under thermal stress. |
| Minimum On-Time | 35 ns - supports high step-down ratios (e.g., 5 V → 1.2 V at 24% duty cycle) without pulse skipping or instability at light loads. |
| Shutdown Current | 0.1–1 µA - meets ultra-low-power requirements for system-level power sequencing and deep-sleep modes. |
Pinout & Package
TPS62320DRCR is housed in a thermally enhanced 10-pin QFN package (3 mm × 3 mm, 0.5 mm pitch) with exposed PowerPAD™ connected internally to PGND for optimal thermal dissipation (RθJA = 49°C/W). Pin functions are validated per TI SLVS528E datasheet Figure 13 (QFN-10 top view).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power input supply | Connects directly to input bypass capacitor; supplies power stage - must be decoupled within 2 mm of pin. |
| EN | Enable control input | Pull high to enable; pull low to enter shutdown (<1 µA ISD); must not float - requires pull-up or MCU GPIO drive. |
| ADJ | Adjustable output programming | Accepts external voltage (0.4–3.6 V) to set VOUT = 1.5 × VADJ; also used as reference for resistor divider in standard feedback configuration. |
| FB | Feedback sense input | Internal 0.4 V reference node; connects to resistor divider midpoint - determines regulated output voltage in adjustable mode. |
| VOUT | Output voltage sense | Direct connection to converter output rail; provides local feedback path to minimize PCB trace impedance effects. |
| MODE/SYNC | Mode control & sync input | GND = auto PFM/PWM; VIN = forced PWM; external 3-MHz clock = synchronized operation - no external pull required. |
| SW | Switch node | Drain connection of internal P/N-MOSFETs; routes to inductor - requires tight layout and Kelvin sensing for stability. |
| PGND | Power ground return | High-current return path for inductor and MOSFETs; must be tied to PowerPAD™ and separated from AGND plane. |
| AGND | Analog ground reference | Low-noise reference for FB/ADJ/EN circuits; connected to PGND only via PowerPAD™ - no direct PCB trace. |
| AVIN | Analog supply input | Dedicated analog rail input; ties to same source as VIN but filtered separately to reduce noise coupling into control circuitry. |
Key Features
| Feature | Design Value |
|---|---|
| 3-MHz fixed-frequency operation | Enables <1-mm component profile solutions using miniature 1 µH inductors and 4.7 µF ceramic capacitors - critical for slim mobile phone designs. |
| Integrated active power-down sequencing | Provides controlled discharge of output rail via 30–50 Ω internal RDIS during shutdown - prevents back-powering of upstream regulators or latch-up in multi-rail systems. |
| 100% duty cycle capability | Supports lowest dropout operation (e.g., 2.8 V → 2.7 V) when input voltage approaches output - maintains regulation during battery brownout conditions. |
| Power-save mode with PFM/PWM auto-transition | Maintains >85% efficiency down to 100 µA load by switching to burst-mode operation - extends standby time in always-connected IoT sensors. |
| Synchronizable on-the-fly to external clock | Eliminates beat frequencies in multi-converter systems (e.g., camera module with ISP + sensor rails) - reduces EMI peaks and simplifies filtering. |
| −0.5% / +1.3% DC voltage accuracy over temperature | Guarantees stable core voltage for ARM Cortex-A/M series processors across industrial temperature range - avoids timing violations or reset events. |
Applications
| Smartphone Core Rail | WLAN/Bluetooth Coexistence |
|---|---|
|
Use Scenario: Powers application processor core (e.g., Qualcomm Snapdragon, MediaTek MT-series) requiring dynamically scalable 0.6–1.4 V at up to 500 mA. IC Role / Device Role / Timing Role: Primary buck regulator providing tightly regulated, low-noise core voltage with fast transient response to CPU DVFS transitions. Use Value: 35 ns minimum on-time and 3-MHz switching enable rapid voltage scaling without output droop; 86 µA IQ extends talk time between charges. |
Use Scenario: Supplies 3.3 V or adjustable 1.8 V rail to dual-band WLAN/BT combo chip (e.g., TI WL1837MOD) in compact handheld devices. IC Role / Device Role / Timing Role: Dedicated point-of-load regulator with MODE/SYNC pin synchronized to system clock to suppress switching noise in 2.4 GHz/5 GHz RF bands. Use Value: Synchronization eliminates heterodyne interference; 93% peak efficiency minimizes thermal impact near sensitive RF front-end components. |
| Digital Camera Image Sensor | USB-Based DSL Modem |
|
Use Scenario: Generates clean 1.2 V bias for CMOS image sensor (e.g., Sony IMX series) with strict PSRR and ripple requirements. IC Role / Device Role / Timing Role: Low-noise adjustable buck converter operating in forced PWM mode (MODE/SYNC = VIN) to suppress switching frequency harmonics near sensor analog signal chain. Use Value: Fixed 3-MHz operation allows precise LC filter design; 0.4 V FB reference enables accurate 1.2 V setting with 1% resistors - reducing calibration overhead. |
Use Scenario: Provides 5 V or 3.3 V power to ADSL2+ line driver IC (e.g., Lantiq VRX200) in USB-powered broadband modems. IC Role / Device Role / Timing Role: High-efficiency intermediate bus converter accepting 5 V USB input and stepping down to isolated downstream rails. Use Value: 2.7–6 V input range accommodates USB port variation (4.75–5.25 V) plus cable drop; 100% duty cycle sustains output during USB suspend (4.4 V min). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous step-down converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62321DRCR | Fixed 1.5 V output; identical pinout, package, and electrical specs except non-adjustable VOUT. | Eliminates external feedback resistors but lacks dynamic voltage scaling capability - suitable for fixed-voltage ASICs or FPGAs. | Select TPS62321DRCR when output voltage is static and board space for resistor divider must be minimized. |
| TPS62313YZD | 8-pin CSP package; fixed 1.8 V output; lower RθJA (250°C/W) but higher thermal resistance than QFN; UVLO threshold 2.0 V vs. 2.4 V. | Better suited for ultra-thin wearables where 3×3 mm QFN height exceeds mechanical constraints - requires re-layout due to different footprint and pinout. | Choose TPS62313YZD only when CSP form factor is mandatory and 1.8 V output matches system requirements. |
Compared with TPS62320DRCR, TPS62321DRCR offers identical performance in a fixed-output variant ideal for cost-sensitive, space-constrained designs, while TPS62313YZD trades adjustability and thermal performance for minimal footprint - making TPS62320DRCR the optimal choice for flexible, thermally demanding portable applications.
Availability
TPS62320DRCR is available at Aetrix Electronics and suitable for smartphone core rails, WLAN/Bluetooth coexistence systems, digital camera image sensors, and USB-based DSL modems requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for TPS62320DRCR 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 electronics.
The TPS623xx family was designed specifically for battery-powered portable applications - emphasizing ultra-small solution size, high light-load efficiency, and robust transient response in space-constrained mobile platforms.
FAQ
What is the recommended input capacitor for TPS62320DRCR?
The TPS62320DRCR datasheet specifies a minimum 4.7 µF X5R or X7R ceramic capacitor at the VIN pin, placed within 2 mm of the device. A 10 µF capacitor is recommended for improved line transient response and reduced input ripple, especially when operating near the 2.7 V lower input limit. TI reference designs pair it with a 0805 or 1206 case size MLCC rated for ≥10 V DC.
Does TPS62320DRCR support dynamic voltage scaling (DVS)?
Yes, TPS62320DRCR supports DVS via its ADJ pin: applying a variable voltage (0.4–3.6 V) directly to ADJ sets VOUT = 1.5 × VADJ, enabling real-time adjustment from 0.6 V to 5.4 V. This is confirmed in the Electrical Characteristics table (page 5) and Functional Block Diagram (page 7) of the SLVS528E datasheet - distinct from fixed-output variants like TPS62321DRCR.
What is the thermal performance difference between TPS62320DRCR (QFN) and TPS62320YZD (CSP)?
TPS62320DRCR in QFN-10 has RθJA = 49°C/W (low-K board), enabling 2050 mW max power dissipation at 25°C ambient. In contrast, TPS62320YZD in CSP-8 has RθJA = 250°C/W, limiting max power to 400 mW. This makes TPS62320DRCR preferable for higher-load, thermally constrained applications - verified in the Dissipation Ratings table (page 4) of SLVS528E.
Can TPS62320DRCR be synchronized to a 2.8 MHz or 3.2 MHz external clock?
No - the TPS62320DRCR synchronization range is strictly 2.65–3.35 MHz (±12.5%), per the "Synchronization range" parameter on page 5 of SLVS528E. Clocks outside this band (e.g., 2.8 MHz or 3.2 MHz) fall within spec and will synchronize reliably; however, 2.5 MHz or 3.5 MHz would fail. The device locks to the falling edge of the external clock signal.
Is the PowerPAD™ on TPS62320DRCR electrically connected to PGND?
Yes, the PowerPAD™ on TPS62320DRCR is internally connected to PGND, as stated in the Terminal Functions table (page 6) and confirmed in the Absolute Maximum Ratings section. It must be soldered to a dedicated PGND copper pour - not left floating or connected to AGND - to ensure proper thermal conduction and EMI suppression.
TPS62320DRCR 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
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 5.4V
- Current - Output:
- 500mA
- Frequency - Switching:
- 3MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-VSON (3x3)
TPS62320DRCR FAQ
1.How can I place an order for TPS62320DRCR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62320DRCR 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 TPS62320DRCR reliable?
The price and inventory of TPS62320DRCR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62320DRCR is usually 5 days.
3.What payment methods are accepted for TPS62320DRCR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62320DRCR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62320DRCR?
TPS62320DRCR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62320DRCR 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 TPS62320DRCR?
For technical support, including TPS62320DRCR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62320DRCR requirements.
6.How does Aetrix verify that TPS62320DRCR is sourced from the original manufacturer or authorized distributors?
All TPS62320DRCR 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 TPS62320DRCR meets industry standards.
7.What is the process for return or replacement of TPS62320DRCR?
All TPS62320DRCR units undergo pre-shipment inspection (PSI). If there is an issue with TPS62320DRCR, 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 TPS62320DRCR part is unused and in its original packaging.
Return procedure for TPS62320DRCR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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