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Renesas DA9121-A0V72
- Part No.:
- DA9121-A0V72
- Manufacturer:
- Renesas
- Package:
- 24-UFBGA, WLCSP
- Datasheet:
-
DA9121-A0V72.pdf
- Description:
- IC REG BUCK ADJ 10A 24WLCSP
- Quantity:
- Payment:
- Shipping:
Inventory:4,045
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Product details
Overview
DA9121-A0V72 from Renesas Electronics is a high-performance, single-channel dual-phase synchronous buck DC-DC converter delivering up to 10 A at 0.3 V–1.9 V output, operating from 2.5 V–5.5 V input, with 4 MHz switching frequency and ±1 % static voltage accuracy. It integrates power FETs, supports remote sensing, and targets CPU/GPU/DDR core rails in space-constrained mobile SoC modules.
For engineers reviewing the DA9121-A0V72 datasheet, DA9121-A0V72 pinout, DA9121-A0V72 application, or DA9121-A0V72 equivalent, key selection criteria include dual-phase current capability, I²C-compatible FM+ interface for dynamic voltage control, integrated thermal/over-current protection, and WLCSP/WLP package compatibility with Li-ion battery-powered handheld systems.
Technical Context
The DA9121-A0V72 implements a synchronous dual-phase buck topology with fully integrated high-side and low-side MOSFETs (RON_PMOS = 36 mΩ, RON_NMOS = 17 mΩ per phase), enabling efficient 10 A delivery without external FETs. It supports automatic phase shedding at ~2.0 A and operates in PWM, PFM, or AUTO mode to optimize light-load efficiency.
Dynamic voltage control (DVC) is implemented via register writes or GPIO-triggered voltage selection between two preconfigured outputs (A/B registers), with programmable slew rates (10 mV per 0.5–8 µs). Remote differential feedback (FB1P/FB1N) ensures ±1 % static accuracy across PCB routing variations, while thermal warning (115–135 °C) and critical shutdown (130–150 °C) thresholds are monitored internally.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 10 A max - supports full-core CPU/GPU loads in SIPP modules without external current sharing. |
| Input Voltage Range | 2.5 V to 5.5 V - compatible with single-cell Li-ion (3.0–4.2 V) and regulated 3.3 V/5.0 V system rails. |
| Output Voltage Range | 0.3 V to 1.9 V in 10 mV steps - covers digital core, GPU, and DDR memory supply requirements. |
| Switching Frequency | 4 MHz nominal - enables use of ultra-small 0.10 µH inductors and reduces output capacitor size. |
| Voltage Accuracy | ±1 % static (≥1 V), ±10 mV static (<1 V) - ensures stable logic-level rail regulation under line/load transients. |
| Interface | I²C-compatible FM+ (up to 1 MHz) - allows real-time DVC, fault reporting, and multi-device addressing via CONF pin. |
| Thermal Protection | Thermal warning (115–135 °C) and shutdown (130–150 °C) - prevents damage during sustained overload or poor airflow. |
Pinout & Package
DA9121-A0V72 is packaged in a 24-ball WLCSP (2.5 mm × 1.7 mm, 0.4 mm pitch) optimized for ultra-thin mobile applications. Pin functions align with Renesas' standard DA9121 pinout; no variant-specific deviations are documented for the -A0V72 suffix.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PVDD1, PVDD2 | Power supply for buck power stages | Must be decoupled with 10 µF capacitors tied to AVDD; supplies integrated high-/low-side FETs. |
| LX1, LX2 | Buck switch nodes | Connect to 100 nH inductors; drive external LC filter; require tight layout to minimize EMI and shoot-through risk. |
| FB1P, FB1N | Differential voltage feedback inputs | Enable remote sensing at point-of-load; reject PCB IR drop to maintain ±1 % regulation accuracy. |
| SCL/GPIO3, SDA/GPIO4 | I²C clock/data or GPIO | Support FM+ interface (1 MHz) or configurable digital I/O; internal pull-ups/downs selectable via registers. |
| IC_EN | Chip enable control | Active-high signal enabling analog/digital circuitry; pulls buck output low when deasserted. |
| CONF/GPIO0 | Configuration select or GPIO | Determines I²C address (0x60–0x67); enables multiple DA9121-A0V72 devices on same bus. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-phase synchronous buck | Delivers 10 A with integrated 36 mΩ PMOS / 17 mΩ NMOS per phase, eliminating external FETs and Schottky diodes. |
| Programmable DVC slew rate | Five discrete ramp rates (0.5–8 µs per 10 mV) allow controlled voltage transitions during processor DVFS events. |
| Remote differential sensing | FB1P/FB1N inputs reject PCB trace resistance effects, maintaining ±1 % accuracy across varied board layouts. |
| Integrated thermal supervision | Dual thresholds (TWARN, TCRIT) trigger interrupt flags and automatic buck shutdown-no external thermistor required. |
| Configurable GPIOs | Six GPIOs (CONF/GPIO0–GPIO2, SCL/GPIO3, SDA/GPIO4) support I²C addressing, PG output assignment, or system control signaling. |
Applications
| Smartphone Application | Tablet PC Application |
|---|---|
Use Scenario: Powering application processor cores and GPU during burst-mode operation with rapid DVFS transitions. IC Role / Device Role / Timing Role: Dual-phase buck regulator providing adaptive 0.6–1.2 V core supply with <10 µs DVC response and ±1 % regulation. Use Value: Enables energy-efficient performance scaling while maintaining voltage stability under 10 A load steps at 10 A/µs. | Use Scenario: Supplying DDR4/LPDDR4 memory rails requiring tight voltage tolerance and fast transient recovery. IC Role / Device Role / Timing Role: Precision 1.1 V or 1.8 V DDR supply with remote sensing and ±10 mV static accuracy below 1 V. Use Value: Prevents data corruption by sustaining regulation during simultaneous read/write bursts with 0–10 A load swings. |
| SIPP Module Application | Infotainment System Application |
Use Scenario: Integrated power solution for SoC + DRAM co-packaged modules where board area and height are constrained. IC Role / Device Role / Timing Role: Ultra-compact 2.5 mm × 1.7 mm WLCSP regulator delivering 10 A with minimal external components (2×0.1 µH, 4×10 µF). Use Value: Reduces BOM count and PCB footprint versus discrete two-phase controllers, easing module-level integration. | Use Scenario: Power management for automotive-grade infotainment head units requiring robust thermal behavior and fault reporting. IC Role / Device Role / Timing Role: Core supply with thermal warning interrupt (E_TEMP_WARN) and I²C-accessible status registers for ASIL-B-aware firmware. Use Value: Supports fail-safe diagnostics and graceful degradation without external monitoring ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-phase buck converter applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| DA9122-A0V72 | Same family; dual-buck (Buck1 + Buck2), each up to 10 A; separate FB/PGND per channel; larger 28WLCSP package. | Supports independent CPU + GPU or CPU + DDR rails; not single-rail replacement. | Select DA9122-A0V72 only when two isolated, independently controlled 10 A rails are required. |
| TPS62480RTWR | Single-channel dual-phase buck; 12 A max; 2.7–5.5 V input; 0.6–1.8 V output; 2.5 MHz; QFN-16 package. | Higher current rating but lower switching frequency; lacks remote sensing and integrated thermal warning flag. | Choose TPS62480RTWR for cost-sensitive designs needing >10 A or QFN assembly compatibility, accepting reduced feature set. |
Compared with DA9121-A0V72, DA9122-A0V72 adds a second independent buck channel at the cost of larger footprint and higher complexity, while TPS62480RTWR trades integrated supervision and sensing for higher peak current and simpler packaging-neither is pin-compatible, and both require PCB redesign.
Availability
DA9121-A0V72 is available at Aetrix Electronics and suitable for smartphone, tablet PC, and SIPP module designs requiring stable component supply, long-term lifecycle support, and qualified automotive-temperature-grade availability.
Supply support for DA9121-A0V72 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
Renesas Electronics is a global semiconductor leader specializing in microcontrollers, analog, power management, and connectivity solutions for automotive, industrial, and consumer markets.
The DA9121 product line delivers highly integrated, space-optimized DC-DC converters for mobile and edge computing SoCs-designed to replace multi-chip PMU solutions with single-die dual-phase regulation and intelligent supervision.
FAQ
What is the maximum output current supported by the DA9121-A0V72?
The DA9121-A0V72 supports up to 10 A continuous output current in dual-phase configuration. This rating assumes proper thermal management using the 24WLCSP package on a 2S2P4L JEDEC board, with junction temperature maintained below 125 °C. The device uses automatic phase shedding to improve light-load efficiency, transitioning from 2-phase to 1-phase operation near 2.0 A.
Does the DA9121-A0V72 require external MOSFETs or diodes?
No, the DA9121-A0V72 integrates both high-side and low-side power MOSFETs (36 mΩ PMOS and 17 mΩ NMOS per phase), eliminating the need for external FETs or Schottky diodes. Its architecture relies solely on two small 0.10 µH inductors and four 10 µF output capacitors, significantly reducing bill-of-materials count and PCB area compared to controller-based solutions.
How does dynamic voltage control (DVC) work on the DA9121-A0V72?
Dynamic voltage control on the DA9121-A0V72 allows real-time adjustment of the output voltage between two preconfigured values (A and B registers) via I²C write or GPIO toggle. The transition occurs at a programmable slew rate (10 mV per 0.5–8 µs), ensuring smooth rail changes during processor DVFS events without overshoot or instability. DVC is fully synchronized with the buck's PWM operation.
What package options are available for the DA9121-A0V72?
The DA9121-A0V72 is offered exclusively in the 24-ball WLCSP package (2.5 mm × 1.7 mm, 0.4 mm pitch), optimized for ultra-thin mobile applications. While the base DA9121 family also includes a 24WLP variant (2.7 mm × 1.9 mm), the -A0V72 suffix specifically denotes the WLCSP version with identical electrical specifications and pinout mapping.
Can the DA9121-A0V72 operate with a single-cell Li-ion battery input?
Yes, the DA9121-A0V72 supports an input voltage range of 2.5 V to 5.5 V, making it fully compatible with single-cell Li-ion batteries (nominal 3.7 V, discharge range ~3.0–4.2 V). Its 4 MHz switching frequency and integrated FETs ensure high efficiency (>90 % at 1 A–8 A loads) across this range, and its thermal protection thresholds prevent unsafe operation during battery voltage sag or high ambient temperatures.
DA9121-A0V72 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 24-UFBGA, WLCSP
- 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):
- 2.5V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.3V
- Voltage - Output (Max):
- 1.9V
- Current - Output:
- 10A
- Frequency - Switching:
- 4MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 24-WLCSP (2.48x1.68)
DA9121-A0V72 FAQ
1.How can I place an order for DA9121-A0V72 through Aetrix?
Please submit a Request for Quotation (RFQ) for DA9121-A0V72 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 DA9121-A0V72 reliable?
The price and inventory of DA9121-A0V72 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DA9121-A0V72 is usually 5 days.
3.What payment methods are accepted for DA9121-A0V72?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DA9121-A0V72 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DA9121-A0V72?
DA9121-A0V72 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DA9121-A0V72 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 DA9121-A0V72?
For technical support, including DA9121-A0V72 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DA9121-A0V72 requirements.
6.How does Aetrix verify that DA9121-A0V72 is sourced from the original manufacturer or authorized distributors?
All DA9121-A0V72 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 DA9121-A0V72 meets industry standards.
7.What is the process for return or replacement of DA9121-A0V72?
All DA9121-A0V72 units undergo pre-shipment inspection (PSI). If there is an issue with DA9121-A0V72, 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 DA9121-A0V72 part is unused and in its original packaging.
Return procedure for DA9121-A0V72:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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