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Qorvo ACT88325VA122SR
- Part No.:
- ACT88325VA122SR
- Manufacturer:
- Qorvo
- Category:
- Power Management - Specialized
- Package:
- -
- Datasheet:
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ACT88325VA122SR.pdf
- Description:
- ACT88325VA122
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Product details
Overview
ACT88325VA122SR from Qorvo is a power loss protection IC integrating 6A eFuse, 36V synchronous buck regulator, and programmable boost storage controller. It delivers autonomous backup power during input failure with 2.7–18V input range, 36V@6A buck output, and 5–36V programmable storage voltage - enabling solid-state drive (SSD) data retention in enterprise storage systems.
For engineers reviewing the ACT88325VA122SR datasheet, pinout, applications, or equivalent options, key selection considerations include its 28-pin FCQFN5x5 package, I²C-configurable storage voltage (27V default), 900kHz buck switching frequency, and integrated health monitoring for supercapacitor degradation detection.
Technical Context
The ACT88325VA122SR implements a dual-path power architecture: bi-directional eFuse FETs (17mΩ RDS(on)) isolate input during fault events, while autonomous state machine transitions between NORMAL (VIN→VOUT pass-through) and SUPPLEMENT (STR→VOUT buck regulation) modes without host intervention. Its internal ADC monitors VIN, VOUT, STR, eFuse current, and die temperature at 100ms intervals.
It features programmable thresholds via I²C registers - including EN_UV_REF (0.64V fixed), EN_OV_REF (configurable 0.82–1.32V), buck overvoltage lockout (107–113% VNOM), and storage UVLO (3.6V rising / 4.0V falling) - enabling precise system-level power sequencing and fault response tuning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 18V - supports wide-range industrial and server rail inputs without external LDO pre-regulation. |
| Buck Output Voltage | Programmable 1.8V–18V - set via external resistor divider on FB pin; default 12V for SSD core logic rails. |
| Storage Voltage Range | 5V to 36V - factory-configured to 27V for ACT88325VA122SR, optimizing supercapacitor size vs. runtime trade-off. |
| Buck Switching Frequency | 900kHz - enables compact 1.0µH inductor selection and reduces output ripple without compromising efficiency. |
| eFuse Current Limit | Programmable 1A–7A (at 3.3V VIN) or 1A–10A (at 12V VIN) - configured via ISET pin resistor; triggers nIRQ on overcurrent. |
| Thermal Protection | 120°C thermal warning (nIRQ), 145°C buck/boost shutdown, 155°C eFuse shutdown - prevents thermal runaway in enclosed SSD enclosures. |
| I²C Address | 0x5Ah (7-bit) - factory-set address compatible with standard SMBus controllers; no pull-up conflict in multi-device systems. |
Pinout & Package
ACT88325VA122SR uses a thermally enhanced FCQFN5x5-28 package with exposed thermal pad (PGND-connected) for efficient heat dissipation in high-power SSD modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| HSB | High-side gate driver bootstrap | Supplies gate drive for internal high-side MOSFET; requires 47nF capacitor to SW for reliable 100% duty-cycle operation. |
| PLI | Power Loss Indicator | Open-drain output asserting low within 100ns of input failure - provides deterministic early warning for SSD firmware-controlled graceful shutdown. |
| VIN (Pins 18–22) | eFuse input supply | Accepts 2.7–18V; connects directly to VOUT in NORMAL mode; isolated by back-to-back FETs during SUPPLEMENT mode. |
| VOUT (Pins 11–13, 23–25) | System load output | Delivers regulated buck output (default 12V); Kelvin feedback via FB pin ensures ±1% accuracy under dynamic SSD load transients. |
| STR | Storage capacitor interface | Charged to 27V by internal boost; supplies buck converter input during power loss; minimum 100µF capacitance required for stable hold-up. |
| ISET | Current limit programming | Resistor-to-VSS sets eFuse current limit; also provides 1/50,000 scaled analog current monitor for real-time load telemetry. |
| nIRQ | Fault interrupt | Open-drain output signaling thermal, OV/UV, OC, or health check faults; masked per register to reduce host polling overhead. |
| SCL/SDA | I²C interface | Standard 1MHz Fast Mode Plus compliant; enables runtime reconfiguration of storage voltage, thresholds, and health check timers without reset. |
Key Features
| Feature | Design Value |
|---|---|
| Autonomous power path switching | Zero-detection-latency transition from VIN to STR power without host software involvement - critical for sub-100ms SSD shutdown compliance. |
| Capacitor health monitoring | Periodic 4-minute sink-current-based ESR measurement detects supercapacitor aging before capacity loss impacts hold-up time. |
| Configurable inrush control | Soft-start slew rate set via SS pin capacitor (6.6mV/µs typical) - limits peak inrush to <10A during SSD cold start. |
| Integrated ADC telemetry | Simultaneous measurement of VIN, VOUT, STR, eFuse current, and die temperature - eliminates need for external monitoring ICs in space-constrained modules. |
| Thermal-enhanced packaging | FCQFN5x5-28 with exposed thermal pad achieves 16.8°C/W θJA - sustains 6A continuous buck output at 105°C ambient in SSD reference layouts. |
Applications
| Enterprise SSD Data Retention | Industrial PLC Backup Power |
|---|---|
Use Scenario: Sudden AC mains loss during NAND flash write operations in datacenter SSDs. IC Role / Device Role / Timing Role: ACT88325VA122SR detects input collapse via PLI pin, disconnects VIN, and powers VOUT from 27V storage caps via buck regulator within 100ns. Use Value: Guarantees ≥10ms hold-up time at 6A load to complete pending writes and flush cache - meeting JEDEC JESD219 reliability requirements. | Use Scenario: Unplanned 24VDC supply interruption in programmable logic controller I/O modules. IC Role / Device Role / Timing Role: ACT88325VA122SR maintains 12V VOUT using stored energy while PLC firmware initiates safe I/O state freeze and diagnostics logging. Use Value: Prevents spurious actuator activation or sensor data corruption during brownout events - supporting IEC 61000-4-29 immunity compliance. |
| Rail-to-Rail Hot-Swap Modules | Medical Imaging System UPS |
Use Scenario: Live insertion of PCIe add-in cards into powered backplanes with strict inrush current limits. IC Role / Device Role / Timing Role: ACT88325VA122SR enforces controlled dV/dt ramp on VOUT via SS pin during card insertion, limiting inrush to <3A. Use Value: Eliminates bus voltage droop and contact arcing - enabling hot-swap compliance per PCI-SIG specifications without external inrush limiters. | Use Scenario: Brief utility outage during MRI gradient coil energization requiring uninterrupted 12V/5V system rails. IC Role / Device Role / Timing Role: ACT88325VA122SR autonomously switches to supercapacitor-powered buck regulation upon AC loss detection, sustaining imaging subsystems. Use Value: Avoids image artifacts or scan abortion by maintaining sub-500ns timing-critical power integrity - satisfying FDA Class II device continuity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar power loss protection applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ACT4910QW122-T | Same die, identical 27V storage voltage and 900kHz buck frequency; differs only in tape-and-reel packaging (no SR suffix). | Identical functional behavior in PCB design; validated for same SSD/PLC applications per Qorvo DS Rev. E. | Select ACT4910QW122-T for standard reel delivery; ACT88325VA122SR indicates special packaging or traceability marking per OEM requirement. |
| TPS43060RTER | Dual-channel buck controller (no integrated eFuse or boost); requires external MOSFETs, gate drivers, and discrete protection circuitry. | Suitable for custom high-efficiency designs where BOM cost optimization outweighs layout area and validation effort. | Choose TPS43060RTER only when full system-level control over protection timing and redundancy is required - not for drop-in replacement. |
Compared with ACT4910QW122-T, ACT88325VA122SR offers identical electrical performance but may include enhanced lot traceability or screening for automotive-grade AEC-Q100 stress testing; versus TPS43060RTER, it reduces bill-of-materials count by 12 components and eliminates 350+ hours of protection logic validation.
Availability
ACT88325VA122SR is available at Aetrix Electronics and suitable for enterprise SSDs, industrial PLCs, medical imaging subsystems, and rail-to-rail hot-swap modules requiring stable component supply across multi-year production cycles.
Supply support for ACT88325VA122SR 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
Qorvo is a U.S.-based semiconductor company specializing in RF, power management, and infrastructure solutions for communications, defense, and industrial markets.
The ACT88325VA122SR belongs to Qorvo's ACT4910 power loss protection product line, engineered specifically for deterministic backup power delivery in mission-critical storage and control systems where data integrity depends on sub-millisecond power-fail response.
FAQ
What is the default storage capacitor voltage setting for ACT88325VA122SR?
The ACT88325VA122SR is factory-configured with a 27V storage capacitor voltage, set via internal CMI option matching ACT4910QW122-T. This value is programmed into the BSET pin current source (20µA typical) and can be adjusted via I²C register 0x06 (BST_VSET) if required for alternate capacitor chemistries or runtime targets. The 27V setting balances supercapacitor size, ESR, and hold-up duration for standard 12V SSD loads.
Does ACT88325VA122SR support 100% duty cycle operation in buck mode?
Yes, ACT88325VA122SR supports true 100% duty cycle in buck regulation mode, enabled by its high-side gate driver architecture and HSB bootstrap circuit. This allows seamless transition from input supply to storage capacitor power without output voltage droop when STR voltage equals or exceeds VOUT. The 45mΩ high-side RDS(on) and 28mΩ low-side RDS(on) ensure minimal conduction loss during extended 100% duty operation at 6A.
How does ACT88325VA122SR detect degraded supercapacitors?
ACT88325VA122SR performs autonomous health checks every four minutes by sinking a programmable current (9–11mA typical) from the STR node and measuring resulting voltage decay. Increased ESR manifests as faster voltage sag; the IC compares decay slope against factory-calibrated thresholds and asserts nIRQ if degradation exceeds 20% from nominal. This occurs before capacitance loss impacts hold-up time - enabling predictive maintenance in deployed SSDs.
Can ACT88325VA122SR operate with 3.3V input supply?
Yes, ACT88325VA122SR operates across 2.7V–18V input range, including 3.3V systems. At 3.3V VIN, its eFuse current limit is programmable up to 7A (vs. 10A at 12V), and boost converter remains functional for storage charging. However, buck output must be set ≥3.3V (e.g., 5V or 12V) since the internal LDO requires ≥4.2V STR voltage for regulation - necessitating external boost stage or higher-voltage storage bank for sub-5V outputs.
What is the purpose of the PLI pin on ACT88325VA122SR?
PLI (Power Loss Indicator) is an open-drain output on ACT88325VA122SR that asserts low within 100ns of input voltage collapse below EN_UV threshold, providing deterministic early warning for host firmware to initiate data save routines. Unlike nIRQ, PLI is unmaskable and dedicated solely to power-fail detection - ensuring zero-latency notification even during I²C bus contention or register corruption. It is referenced to VSS and tolerates up to 24V pull-up for direct interfacing with 3.3V/5V microcontrollers.
ACT88325VA122SR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Qorvo
- Series:
- -
- Package/Case:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- -
- Current - Supply:
- -
- Voltage - Supply:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
ACT88325VA122SR FAQ
1.How can I place an order for ACT88325VA122SR through Aetrix?
Please submit a Request for Quotation (RFQ) for ACT88325VA122SR 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 ACT88325VA122SR reliable?
The price and inventory of ACT88325VA122SR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ACT88325VA122SR is usually 5 days.
3.What payment methods are accepted for ACT88325VA122SR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ACT88325VA122SR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ACT88325VA122SR?
ACT88325VA122SR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ACT88325VA122SR 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 ACT88325VA122SR?
For technical support, including ACT88325VA122SR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ACT88325VA122SR requirements.
6.How does Aetrix verify that ACT88325VA122SR is sourced from the original manufacturer or authorized distributors?
All ACT88325VA122SR 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 ACT88325VA122SR meets industry standards.
7.What is the process for return or replacement of ACT88325VA122SR?
All ACT88325VA122SR units undergo pre-shipment inspection (PSI). If there is an issue with ACT88325VA122SR, 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 ACT88325VA122SR part is unused and in its original packaging.
Return procedure for ACT88325VA122SR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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