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Renesas ISL91211AIKZT7AR5873
- Part No.:
- ISL91211AIKZT7AR5873
- Manufacturer:
- Renesas
- Package:
- 35-BGA
- Datasheet:
-
ISL91211AIKZT7AR5873.pdf
- Description:
- IC REG BUCK PROG TRPL 35BGA
- Quantity:
- Payment:
- Shipping:
Inventory:136
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Product details
Overview
ISL91211AIKZT7AR5873 from Renesas is a triple-output, 4-phase programmable Power Management IC (PMIC) with 2+1+1 phase configuration, delivering up to 5A per phase across three regulated outputs (VOUT1–VOUT3). It integrates synchronous buck controllers with integrated low-RDS(ON) MOSFETs (32 mΩ HS / 17.5 mΩ LS), operates at 2 MHz switching frequency, and supports I²C/SPI programmability for dynamic voltage scaling (DVS) in industrial FPGA and computing power rails.
For engineers reviewing the ISL91211AIKZT7AR5873 datasheet, ISL91211AIKZT7AR5873 pinout, ISL91211AIKZT7AR5873 application, or ISL91211AIKZT7AR5873 equivalent, key selection criteria include its triple-output 2+1+1 phase topology, ±0.7% system output accuracy with remote sensing, 3 mV/µs DVS slew rate, and 4.70 mm × 6.30 mm 35-ball TFBGA package with 0.8 mm pitch.
Technical Context
The ISL91211AIKZT7AR5873 implements Renesas' proprietary Rapid Robust Ripple Regulator (R5) control architecture, enabling ultra-fast transient response (>10 A/µs load step capability), seamless DCM/CCM transitions, and no external compensation required. Its four independent buck controllers are reconfigurable into a 2-phase + 1-phase + 1-phase topology to optimize current sharing and thermal distribution across VOUT1 (dual-phase), VOUT2 (single-phase), and VOUT3 (single-phase).
It supports dual communication interfaces - I²C (up to 3.4 MHz) and SPI (up to 26 MHz) - with configurable MPIO/GPIO pins for PGOOD monitoring, hardware DVS, or enable control. Fault protection includes overvoltage (±250 mV threshold), undervoltage, overcurrent (12 A peak on Phase D), and thermal shutdown at 143–162 °C with 55 °C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Configuration | Triple output: 2+1+1 phase (VOUT1 = dual-phase; VOUT2/VOUT3 = single-phase each) |
| Max Output Current per Phase | 5 A - enables high-power rail delivery with scalable phase assignment |
| Switching Frequency | 2 MHz - allows use of compact 220 nH inductors and reduces solution footprint |
| Output Voltage Range | 0.3 V to 2.0 V (I²C-programmable in 1.2–2.0 mV steps) - supports modern core logic and I/O rails |
| System Accuracy | ±0.7% over -40°C to +85°C with remote sensing - ensures tight regulation under load and thermal variation |
| Control Architecture | Renesas R5 - eliminates need for external compensation components and guarantees stability across all operating conditions |
| DVS Slew Rate | 3 mV/µs - enables precise, controlled voltage transitions during processor DVFS sequences |
Pinout & Package
Package: 4.70 mm × 6.30 mm, 35-ball Thin Fine-Pitch Ball Grid Array (TFBGA) with 0.8 mm pitch, RoHS-compliant, moisture sensitivity level (MSL) 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PVIN_A, PVIN_B, PVIN_C, PVIN_D | Power input for phases A–D | Independent high-current inputs allow optimized board-level power routing and thermal isolation per phase |
| PH_A, PH_B, PH_C, PH_D | Switching node outputs | Direct connection points to external inductors; PH_A/PH_B drive VOUT2/VOUT3; PH_C/PH_D drive dual-phase VOUT1 |
| VOUT1, VOUT2, VOUT3 | Output voltage sense inputs | Remote feedback terminals enabling accurate regulation at point-of-load; VOUT4/RTN4 shorted to GND for ISL91211AIK variant |
| RTN1–RTN3 | Remote ground sense inputs | Enable Kelvin sensing for improved load regulation and rejection of PCB trace IR drop |
| MPIO0–MPIO3, GPIO0–GPIO2 | Configurable digital I/O | Support I²C/SPI, PGOOD reporting, hardware DVS, or buck enable - configured via IO_PINMODE register |
| EN | Master chip enable | NMOS-threshold input (VIL ≤ 0.5 V, VIH ≥ 1.35 V) for synchronized system power-up sequencing |
| INT | Open-drain interrupt output | Signals fault conditions (OV/UV/OC/OT) or status events to host controller without polling |
Key Features
| Feature | Design Value |
|---|---|
| Proprietary R5 control | Enables <10 µs transient recovery with no external compensation - critical for FPGA and CPU core rail stability |
| Integrated MOSFETs | 32 mΩ high-side + 17.5 mΩ low-side RDS(ON) - reduces conduction loss and eliminates discrete FET layout complexity |
| Dynamic Voltage Scaling | Independent per-output DVS with 3 mV/µs slew rate - supports real-time processor performance/power tuning |
| Light-load efficiency modes | Automatic diode emulation and pulse-skipping - extends battery life in always-on industrial subsystems |
| Comprehensive protection | Per-phase overcurrent, ±250 mV OVP/UVP, thermal shutdown with hysteresis - ensures robust operation in unattended systems |
Applications
| Industrial FPGA Power | Computing Server Core Rails |
|---|---|
Use Scenario: Powering Xilinx Kintex or Intel Arria FPGA core, auxiliary, and I/O banks in programmable logic controllers. IC Role / Device Role / Timing Role: Triple-output PMIC delivering 0.85 V (core), 1.2 V (aux), and 1.8 V (I/O) with independent sequencing and DVS. Use Value: 2+1+1 phase topology delivers >10 A total to FPGA core rail while maintaining <±5 mV regulation error under 5 A/µs transients. | Use Scenario: Supplying multiple voltage domains (CPU core, memory, SoC I/O) in edge computing servers with thermal constraints. IC Role / Device Role / Timing Role: Centralized power hub managing three independent rails with coordinated startup/shutdown and telemetry via I²C. Use Value: Integrated R5 control achieves <15 µs load-step recovery - prevents timing violations during burst workloads. |
| Home Gateway SoC | Industrial Control Unit |
Use Scenario: Powering ARM-based SoCs (e.g., NXP i.MX8) in residential gateways requiring low standby power and fast wake-up. IC Role / Device Role / Timing Role: Primary PMIC providing 0.9 V core, 1.1 V GPU, and 3.3 V interface rails with ultra-low IQ (<1 µA in shutdown). Use Value: Diode emulation mode maintains >85% efficiency at 1 mA load - extends uptime in battery-backed failover scenarios. | Use Scenario: Regulating power for PLC I/O modules, sensor interfaces, and real-time Ethernet PHYs in harsh environments. IC Role / Device Role / Timing Role: High-reliability PMIC with -40°C to +85°C operation, thermal shutdown, and remote sensing for long-term field deployment. Use Value: ±0.7% system accuracy with RTN sensing ensures analog ADC reference stability despite 100 mΩ PCB trace resistance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multi-rail PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL91211BIKZ-T | Quad-output (1+1+1+1 phase); identical package, pinout, and register map but VOUT4 enabled and RTN4 functional | Required when four independent rails (e.g., CPU core + cache + memory + I/O) are needed instead of three | Select ISL91211BIKZ-T only if fourth rail functionality is mandatory; not pin-compatible due to VOUT4/RTN4 signal assignment differences |
| MP2147GD-Z | Single-output, 4-phase buck controller (no integrated MOSFETs); requires external FETs and compensation network | Suitable for cost-sensitive designs where BOM flexibility and thermal customization outweigh integration benefits | Choose MP2147GD-Z when discrete power stage optimization is prioritized over footprint and design cycle time |
Compared with ISL91211BIKZ-T, the ISL91211AIKZT7AR5873 offers higher per-rail current capacity in its dual-phase VOUT1 channel but lacks a fourth independent output; versus MP2147GD-Z, it trades external component count and layout effort for guaranteed stability and faster time-to-market.
Availability
ISL91211AIKZT7AR5873 is available at Aetrix Electronics and suitable for industrial FPGA power, computing server core rails, and home gateway SoC applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ISL91211AIKZT7AR5873 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, and embedded solutions for industrial, automotive, and infrastructure markets.
The ISL91211AIKZT7AR5873 belongs to Renesas' high-efficiency, multi-phase PMIC product line designed specifically for space-constrained, thermally demanding applications in FPGA, SoC, and server platforms requiring precision regulation and intelligent power sequencing.
FAQ
What is the maximum output current supported by the ISL91211AIKZT7AR5873 per phase?
The ISL91211AIKZT7AR5873 supports up to 5 A per phase across its four internal buck controllers. In its default 2+1+1 configuration, this enables up to 10 A on VOUT1 (dual-phase), and 5 A each on VOUT2 and VOUT3. The device's 32 mΩ high-side and 17.5 mΩ low-side MOSFETs are rated for continuous operation within this limit under recommended thermal conditions.
Does the ISL91211AIKZT7AR5873 require external compensation components?
No, the ISL91211AIKZT7AR5873 does not require external compensation components. Its proprietary Rapid Robust Ripple Regulator (R5) control architecture provides inherent stability across all operating conditions, including full load range, input voltage variation, and temperature extremes - eliminating the need for external RC networks typically required in conventional voltage-mode or current-mode controllers.
How is dynamic voltage scaling (DVS) implemented on the ISL91211AIKZT7AR5873?
The ISL91211AIKZT7AR5873 supports independent DVS on each output via I²C register writes or hardware pin control (using MPIO/GPIO pins configured in DVS mode). The DVS slew rate is fixed at 3 mV/µs, and output voltage can be adjusted between 0.3 V and 2.0 V in fine steps (1.2–2.0 mV depending on feedback divider setting), enabling precise coordination with processor performance states.
What package type and dimensions does the ISL91211AIKZT7AR5873 use?
The ISL91211AIKZT7AR5873 uses a 4.70 mm × 6.30 mm, 35-ball Thin Fine-Pitch Ball Grid Array (TFBGA) package with 0.8 mm ball pitch. It is RoHS-compliant, Pb-free, and classified as MSL Level 3, requiring bake conditioning prior to reflow if exposed beyond floor life limits.
Can the ISL91211AIKZT7AR5873 be used in quad-output configurations?
No, the ISL91211AIKZT7AR5873 is strictly a triple-output PMIC with 2+1+1 phase assignment. Its VOUT4 and RTN4 pins are internally shorted to ground and not functional. For quad-output operation, the pin-compatible ISL91211BIKZ-T must be used - it shares the same package and most pin functions but enables VOUT4/RTN4 as active sensing nodes.
ISL91211AIKZT7AR5873 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 35-BGA
- Packaging:
- Tray
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Programmable
- Number of Outputs:
- 3
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.3V
- Voltage - Output (Max):
- 2V
- Current - Output:
- 5A, 5A, 5A
- Frequency - Switching:
- 2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 35-BGA (4.7x6.3)
ISL91211AIKZT7AR5873 FAQ
1.How can I place an order for ISL91211AIKZT7AR5873 through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL91211AIKZT7AR5873 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 ISL91211AIKZT7AR5873 reliable?
The price and inventory of ISL91211AIKZT7AR5873 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL91211AIKZT7AR5873 is usually 5 days.
3.What payment methods are accepted for ISL91211AIKZT7AR5873?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL91211AIKZT7AR5873 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL91211AIKZT7AR5873?
ISL91211AIKZT7AR5873 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL91211AIKZT7AR5873 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 ISL91211AIKZT7AR5873?
For technical support, including ISL91211AIKZT7AR5873 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL91211AIKZT7AR5873 requirements.
6.How does Aetrix verify that ISL91211AIKZT7AR5873 is sourced from the original manufacturer or authorized distributors?
All ISL91211AIKZT7AR5873 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 ISL91211AIKZT7AR5873 meets industry standards.
7.What is the process for return or replacement of ISL91211AIKZT7AR5873?
All ISL91211AIKZT7AR5873 units undergo pre-shipment inspection (PSI). If there is an issue with ISL91211AIKZT7AR5873, 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 ISL91211AIKZT7AR5873 part is unused and in its original packaging.
Return procedure for ISL91211AIKZT7AR5873:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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