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Texas Instruments TPS62320YZDR
- Part No.:
- TPS62320YZDR
- Manufacturer:
- Texas Instruments
- Package:
- 8-UFBGA, DSBGA
- Datasheet:
-
TPS62320YZDR.pdf
- Description:
- IC REG BUCK ADJ 500MA 8DSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,790
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Product details
Overview
TPS62320YZDR 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 and ±0.5% to +1.3% DC voltage accuracy over temperature. It supports input voltages from 2.7 V to 6 V and features integrated active power-down sequencing, 35-ns minimum on-time, and power-save mode operation for portable Li-Ion/NiMH-powered systems.
For engineers reviewing the TPS62320YZDR datasheet, TPS62320YZDR pinout, TPS62320YZDR application, or TPS62320YZDR equivalent, key selection criteria include its adjustable feedback architecture (VFB = 0.4 V), QFN-10 thermal performance (RθJA = 49°C/W), 3-MHz fixed-frequency PWM/PFM hybrid operation, and compatibility with low-profile 1-µH inductors and 4.7-µF ceramic capacitors in space-constrained mobile designs.
Technical Context
The TPS62320YZDR employs a voltage-mode control architecture with input voltage feed-forward, enabling fast load and line transient response. 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 (P-MOS: 670–890 mA; N-MOS sourcing: 550–890 mA).
Operation includes automatic transition between fixed-frequency PWM (moderate/heavy load) and pulse-frequency modulation (PFM) at light loads, with MODE/SYNC pin enabling forced PWM, external clock synchronization (2.65–3.35 MHz), or power-down sequencing via integrated RDIS = 30–50 Ω discharge resistor - exclusive to the TPS6232x family.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7 V to 6 V - supports single-cell Li-Ion (3.0–4.2 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, microcontrollers, and RF ICs in handheld devices. |
| Switching Frequency | 3 MHz (±0.35 MHz) - enables use of sub-1-mm-height 1-µH inductors and compact 4.7-µF ceramic output capacitors. |
| Feedback Reference | 0.4 V - allows precise adjustable output from 0.6 V to 5.4 V using external resistor divider; minimizes divider current error. |
| Quiescent Current | 86 µA in PFM mode - extends battery life in always-on subsystems like real-time clocks or sensor interfaces. |
| DC Voltage Accuracy | −0.5% to +1.3% over −40°C to +85°C - ensures stable core voltage for low-voltage TMS320™ DSPs and smart-phone processors. |
| Minimum On-Time | 35 ns - supports high step-down ratios (e.g., 5 V → 1.2 V at 3 MHz) without pulse skipping or instability. |
Pinout & Package
TPS62320YZDR 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 heat dissipation (RθJA = 49°C/W on 1-layer board).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power input supply | Primary input rail connection; must be decoupled locally with low-ESR capacitor to minimize switching noise injection. |
| AVIN | Analog input supply | Dedicated analog supply for internal reference and control circuitry; separate from VIN to reduce noise coupling into feedback path. |
| EN | Enable control input | Active-high logic input; pull to GND for <1 µA shutdown current; requires external pull-up or host MCU control for sequencing. |
| ADJ | Adjustable output programming | Feedback reference input; sets VOUT = 1.5 × VADJ; used with resistor divider for precise output voltage configuration. |
| FB | Feedback sense input | Monitors output voltage via external divider; internal 0.4-V reference enables accurate regulation independent of load or line variation. |
| VOUT | Output voltage sense | Direct connection to output rail; provides local sensing point for improved regulation accuracy under PCB trace resistance. |
| AGND | Analog ground | Reference ground for internal analog circuits; must be tied to PGND via short, low-inductance path under PowerPAD™. |
| MODE/SYNC | Mode control & sync input | Configures PWM/PFM auto-switching (GND), forced PWM (VIN), or external clock sync (2.65–3.35 MHz square wave). |
| PGND | Power ground return | Main return path for high-current switch node; requires solid copper pour and thermal vias to inner ground planes. |
| SW | Switch node | Drain connection of internal P/N-MOSFETs; routes to external inductor; requires tight layout to minimize EMI and ringing. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated active power-down sequencing | On-chip 30–50 Ω discharge resistor (RDIS) safely collapses output voltage during shutdown - eliminates need for external bleeder circuitry. |
| 35-ns minimum on-time capability | Enables high-frequency, high-ratio conversion (e.g., 5 V → 1.2 V at 3 MHz) without duty-cycle limitation or loss of regulation. |
| Power-save mode with PFM operation | Maintains >85% efficiency at 1 mA load by pulsing only when output droops below −1.5% VOUT(NOM), reducing IQ to 86 µA. |
| 3-MHz fixed-frequency PWM/PFM hybrid | Delivers best-in-class transient response while preserving >90% peak efficiency across 0.1–500 mA load range. |
| Synchronizable to external clock | Eliminates beat frequencies in multi-rail systems by aligning switching edges to master clock - critical for noise-sensitive RF sections. |
Applications
| Mobile Phone Core Rail | Bluetooth/WLAN Baseband |
|---|---|
Use Scenario: Powers ARM-based application processor core (1.2–1.5 V) from single-cell Li-Ion battery in smartphones. IC Role / Device Role / Timing Role: Primary synchronous buck regulator providing dynamically scalable core voltage with fast load transient response. Use Value: 35-ns minimum on-time and 3-MHz switching enable tight regulation during CPU burst modes without requiring oversized output capacitance. | Use Scenario: Supplies 1.8 V/500 mA to Bluetooth baseband IC and WLAN transceiver in compact handheld modules. IC Role / Device Role / Timing Role: High-efficiency intermediate rail converter supporting simultaneous RF and digital operation with low EMI profile. Use Value: Synchronization capability eliminates switching noise interference with 2.4-GHz ISM band signals, improving receiver sensitivity. |
| USB DSL Modem Power | Digital Camera Image Sensor |
Use Scenario: Generates 3.3 V from 5-V USB input for ADSL line driver and Ethernet PHY in portable broadband modems. IC Role / Device Role / Timing Role: Compact, low-noise buck converter replacing discrete solutions to meet USB power budget constraints. Use Value: 4.7-µF ceramic output capacitor support and 1-mm profile solution meet strict height and footprint requirements of mini-PCIe form factor. | Use Scenario: Provides 1.5 V bias to CMOS image sensor and 2.8 V to analog front-end in battery-powered digital cameras. IC Role / Device Role / Timing Role: Dual-output-capable adjustable regulator supporting multiple sensor rail requirements with single IC footprint. Use Value: Adjustable 0.6–5.4 V output range and ±0.5% to +1.3% DC accuracy ensure stable pixel clock generation and low-noise analog signal chain operation. |
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 QFN-10 package, 3-MHz operation, and 500-mA rating. | No external feedback divider required; simplified BOM for fixed-rail systems. | Select when system requires guaranteed 1.5-V output without adjustment - reduces component count but sacrifices flexibility. |
| TPS62313YZDR | Fixed 1.8-V output in CSP-8 package; lower RθJA (250°C/W) but higher thermal resistance than QFN-10. | Smaller footprint (1.96 mm² vs. 9 mm²); suitable for ultra-dense layouts where thermal margin permits. | Choose for space-constrained designs accepting trade-off in thermal performance and absence of ADJ/FB pins. |
Compared with TPS62320YZDR, the TPS62321DRCR offers plug-and-play 1.5-V regulation but lacks adjustability, while the TPS62313YZDR saves board area with CSP-8 packaging yet requires careful thermal design due to higher junction-to-ambient resistance.
Availability
TPS62320YZDR is available at Aetrix Electronics and suitable for mobile phone core rails, Bluetooth/WLAN baseband supplies, and USB DSL modem power systems requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for TPS62320YZDR 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 product line was engineered specifically for battery-powered portable applications demanding ultra-small solution size, high efficiency across wide load ranges, and seamless integration with low-voltage processors and RF ICs.
FAQ
What is the recommended inductor value for TPS62320YZDR in a typical 3.6-V to 1.8-V application?
The TPS62320YZDR is optimized for 1-µH inductors in standard configurations, as validated in TI's SLVS528E datasheet Figure 1 and characteristic curves. Using a 1-µH shielded inductor (e.g., FDK MIPW3226 series) with 4.7-µF X5R/X7R ceramic output capacitors achieves >90% efficiency at 500 mA while maintaining stable 3-MHz operation and minimal output ripple. Larger inductors degrade light-load efficiency and transient response.
Does TPS62320YZDR support true 100% duty cycle operation for low-dropout scenarios?
Yes, the TPS62320YZDR supports 100% duty cycle operation, allowing it to maintain regulation even when input voltage approaches output voltage - critical for Li-Ion battery discharge down to 3.0 V while powering a 2.8-V rail. This feature is explicitly documented in the "Features" section of the SLVS528E datasheet and enables extended runtime without brownout in portable systems.
How does the MODE/SYNC pin function in TPS62320YZDR during power-down sequencing?
In TPS62320YZDR, the MODE/SYNC pin does not directly control power-down sequencing; instead, the device uses an integrated discharge resistor (RDIS = 30–50 Ω) activated automatically when EN is pulled low. The MODE/SYNC pin configures operating mode (PWM/PFM/auto-sync) but remains functional during shutdown - its state has no effect on the active power-down discharge path, which is internal and unconditional.
What is the maximum allowable ambient temperature for continuous 500-mA operation of TPS62320YZDR in QFN-10 package?
At 500-mA continuous load, the TPS62320YZDR in QFN-10 package (RθJA = 49°C/W) reaches thermal limit at approximately 65°C ambient temperature assuming 25°C board temperature rise. Derating per the datasheet's dissipation rating table confirms 2050 mW max power at TA ≤ 25°C, decreasing by 21 mW/°C above that - thus full 500-mA operation is sustainable up to 65°C with adequate PCB copper area and airflow.
Can TPS62320YZDR be used with ceramic capacitors only, or is an aluminum electrolytic capacitor required for stability?
The TPS62320YZDR is fully compatible with ceramic-only output capacitors, as confirmed by TI's application circuits (e.g., Figure 1) and efficiency graphs using 4.7-µF X5R/X7R ceramics. Its voltage-mode control with feed-forward compensation eliminates need for ESR-based damping, enabling stable operation with low-ESR MLCCs - simplifying design, reducing size, and improving reliability versus hybrid capacitor solutions.
TPS62320YZDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-UFBGA, DSBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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:
- 8-DSBGA
TPS62320YZDR FAQ
1.How can I place an order for TPS62320YZDR through Aetrix?
Please submit a Request for Quotation (RFQ) for TPS62320YZDR 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 TPS62320YZDR reliable?
The price and inventory of TPS62320YZDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TPS62320YZDR is usually 5 days.
3.What payment methods are accepted for TPS62320YZDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TPS62320YZDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TPS62320YZDR?
TPS62320YZDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TPS62320YZDR 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 TPS62320YZDR?
For technical support, including TPS62320YZDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TPS62320YZDR requirements.
6.How does Aetrix verify that TPS62320YZDR is sourced from the original manufacturer or authorized distributors?
All TPS62320YZDR 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 TPS62320YZDR meets industry standards.
7.What is the process for return or replacement of TPS62320YZDR?
All TPS62320YZDR units undergo pre-shipment inspection (PSI). If there is an issue with TPS62320YZDR, 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 TPS62320YZDR part is unused and in its original packaging.
Return procedure for TPS62320YZDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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