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Renesas ISL91211BIKZT7AR5878
- Part No.:
- ISL91211BIKZT7AR5878
- Manufacturer:
- Renesas
- Package:
- 35-TFBGA
- Datasheet:
-
ISL91211BIKZT7AR5878.pdf
- Description:
- IC REG BUCK PROG QUAD 35TFBGA
- Quantity:
- Payment:
- Shipping:
Inventory:250
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Product details
Overview
ISL91211BIKZT7AR5878 from Renesas is a quad-output, 4-phase programmable Power Management IC (PMIC) with integrated high-efficiency synchronous buck controllers. It delivers up to 5A per phase, supports I²C/SPI programmability (0.3V–2.0V output range), and features Renesas' Rapid Robust Ripple Regulator (R⁵) control architecture for ultra-fast transient response (>10A/µs demonstrated). It is designed for power delivery in industrial FPGAs and computing systems requiring tight regulation (±0.7% system accuracy) and dynamic voltage scaling.
For engineers reviewing the ISL91211BIKZT7AR5878 datasheet, ISL91211BIKZT7AR5878 pinout, ISL91211BIKZT7AR5878 application, or ISL91211BIKZT7AR5878 equivalent, key selection considerations include its 35-ball 4.70mm×6.30mm TFBGA package, 2MHz switching frequency, independent DVS per output, and support for 1+1+1+1 phase configuration with remote sensing on all four outputs.
Technical Context
The ISL91211BIKZT7AR5878 implements four independent buck controllers, each configurable as a single-phase output - enabling true quad-output operation (VOUT1–VOUT4) with dedicated PH_A–PH_D switching nodes and RTN1–RTN4 remote sense inputs. Its R⁵ control loop eliminates external compensation and ensures seamless DCM/CCM transitions while maintaining ±0.7% output accuracy across load and temperature.
It integrates low-RDS(ON) MOSFETs (HS: 32mΩ, LS: 17.5mΩ), operates from 2.7V–5.5V input, and supports programmable soft-start, fault protection (UV/OV/OC/OT), and flexible I/O pin modes via SPI/I²C. The device uses a 0.8mm-pitch 35-ball TFBGA package with split PGND planes (PGND_AB, PGND_CD) optimized for thermal and EMI performance in dense PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Configuration | Quad output (1+1+1+1 phase); each output independently controllable via I²C/SPI |
| Max Output Current/Phase | 5A per phase; enables high-power rail generation without external drivers |
| Switching Frequency | 2MHz fixed; allows use of compact 220nH inductors and reduces solution footprint |
| Output Voltage Range | 0.3V–2.0V (I²C-programmable in 1.2–2.0mV steps); supports core voltage scaling for CPUs/FPGAs |
| System Accuracy | ±0.7% over -40°C to +85°C with remote sensing; ensures stable logic-level compliance under load transients |
| Control Architecture | Renesas R⁵ (Rapid Robust Ripple Regulator); eliminates external compensation and enables >10A/µs load step response |
| Package | 4.70mm × 6.30mm, 35-ball TFBGA, 0.8mm pitch; RoHS-compliant, MSL3, optimized for thermal dissipation |
Pinout & Package
ISL91211BIKZT7AR5878 is housed in a 4.70mm × 6.30mm, 35-ball thin-film BGA (TFBGA) package with 0.8mm ball pitch and RoHS-compliant SnAgCu solder balls. Thermal resistance is θJA = 47°C/W and θJC = 3°C/W, supporting high-power density designs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| PVIN_A–PVIN_D | Input power supply for phases A–D | Independent input rails allow source isolation and optimal decoupling per phase |
| PH_A–PH_D | Switching node outputs | Direct connection to external inductors; requires low-inductance layout for EMI control |
| VOUT1–VOUT4 | Output voltage sense inputs | Accept feedback from remote point-of-load; enable precise regulation at FPGA/CPU VDD pins |
| RTN1–RTN4 | Remote ground sense inputs | Compensate for PCB trace IR drop; critical for sub-1V accuracy under high current |
| MPIO0–MPIO3 | Multi-purpose I/O | Configurable as I²C/SPI signals, PGOOD, DVS, or GPIO; supports factory OTP pin-mode selection |
| GPIO0–GPIO2 | General-purpose I/O | Default I²C clock/data (GPIO0/GPIO1); GPIO2 supports hardware enable or DVS functions |
| EN | Master enable input | NMOS-threshold logic; active-high enable with internal pull-down for safe power-up sequencing |
| INT | Open-drain interrupt output | Asserts on fault conditions (OV/UV/OC/OT); simplifies system-level monitoring without polling |
Key Features
| Feature | Design Value |
|---|---|
| Independent Dynamic Voltage Scaling (DVS) | Each output supports programmable slew rate (3mV/µs typical) and multi-pin DVS configurations for fine-grained power state control |
| R⁵ Control Architecture | Eliminates external compensation components and guarantees ultra-fast transient response (<10µs recovery from 5A load step) |
| I²C/SPI Programmability | Full register access over I²C (up to 3.4MHz) or SPI (up to 26MHz); enables runtime reconfiguration without firmware changes |
| Comprehensive Fault Protection | Dedicated UV/OV/OC/OT detection per buck with latched or auto-recover behavior; reduces need for external supervisors |
| Low Quiescent Current | 17µA total supply current (AVIN + PVIN) in full-standby mode; extends battery life in always-on subsystems |
Applications
| Industrial FPGA Power Delivery | Server CPU Core Rail |
|---|---|
|
Use Scenario: Powering Xilinx Kintex or Intel Arria FPGA banks with multiple voltage domains (VCCINT, VCCIO, MGTAVCC). IC Role / Device Role / Timing Role: Quad-output PMIC delivering independently sequenced, dynamically scaled rails with remote sensing at each bank's VRM input. Use Value: Enables <1% output deviation under 10A/µs FPGA logic switching transients while minimizing board area via 2MHz operation and integrated MOSFETs. |
Use Scenario: Generating core voltage (VDD) for AMD EPYC or Intel Xeon processors in 1U rack servers. IC Role / Device Role / Timing Role: Primary multiphase controller managing four independent 1-phase rails for multi-die CPU packages with per-core DVFS. Use Value: Delivers ±0.7% accuracy across -40°C to +85°C ambient, ensuring timing margin compliance during thermal cycling without recalibration. |
| Home Gateway SoC Supply | Industrial PLC Mainboard |
|
Use Scenario: Powering Broadcom BCM68xx or Qualcomm IPQ807x SoCs in carrier-class Wi-Fi 6 gateways. IC Role / Device Role / Timing Role: Single-chip solution for SoC core (1.0V), DDR interface (1.2V), PHY (1.8V), and auxiliary (3.3V LDO-fed) rails. Use Value: Reduces BOM count by integrating four buck controllers, eliminating discrete DC-DC ICs and associated passives while supporting I²C-based firmware updates. |
Use Scenario: Powering ARM Cortex-A7/A53-based control units in DIN-rail mounted PLCs with extended temperature requirements. IC Role / Device Role / Timing Role: Robust quad-rail PMIC with thermal shutdown (143°C trigger), UVLO (2.58V rising), and watchdog reset for fail-safe operation. Use Value: Maintains functional safety integrity via hardware fault signaling (INT pin) and latch-off behavior on overtemperature, meeting IEC 61508 SIL-2 requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad-output PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL91211AIKZ-T | Triple-output (2+1+1 phase) variant; shares identical pinout, package, and register map but lacks VOUT4/RTN4 functionality | Suitable only for 3-rail systems (e.g., dual-core SoC + memory); cannot replace quad-rail requirement without redesign | Select ISL91211AIKZ-T only if fourth rail is unnecessary and cost reduction is prioritized over flexibility |
| MP2147GQ-Z | Single-channel 4A buck with external MOSFET drive; no integrated power stages, no multi-rail coordination, no R⁵ control | Requires four separate ICs plus sequencing logic to match ISL91211BIKZT7AR5878's integration level; higher layout complexity | Choose MP2147GQ-Z only when discrete control of each phase is required or when Renesas ecosystem compatibility is not needed |
Compared with ISL91211AIKZ-T, ISL91211BIKZT7AR5878 adds a fourth fully independent output with matching accuracy and transient performance; compared with MP2147GQ-Z, it delivers 75% smaller solution size and eliminates inter-rail timing mismatches through unified control.
Availability
ISL91211BIKZT7AR5878 is available at Aetrix Electronics and suitable for industrial FPGA power delivery, server CPU core rail generation, and home gateway SoC supply requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ISL91211BIKZT7AR5878 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 devices, and embedded solutions for industrial, automotive, and computing markets.
The ISL91211BIKZT7AR5878 belongs to Renesas' high-density PMIC product line, engineered for space-constrained, high-performance computing and industrial control applications demanding multi-rail precision, fast transient response, and software-defined power management.
FAQ
What is the maximum output current capability per phase for the ISL91211BIKZT7AR5878?
The ISL91211BIKZT7AR5878 supports up to 5A peak current per phase across all four buck stages (PH_A–PH_D), verified under 2.7V–5.5V input conditions and 2MHz switching. This rating assumes proper thermal design using the 4.70mm×6.30mm TFBGA package with recommended PCB copper area and airflow. Derating applies above +85°C ambient.
Does the ISL91211BIKZT7AR5878 support dynamic voltage scaling (DVS) on all four outputs?
Yes, the ISL91211BIKZT7AR5878 supports independent DVS on all four outputs via I²C register writes or hardware pin modes (e.g., MPIO-configured DVS_PIN0/DVS_PIN1). Each output can be slewed at 3mV/µs typical, with programmable step size (1.2–2.0mV) and target voltage range (0.3V–2.0V), enabling coordinated power-state transitions in multi-core SoCs.
What package type and dimensions does the ISL91211BIKZT7AR5878 use?
The ISL91211BIKZT7AR5878 uses a 35-ball thin-film BGA (TFBGA) package measuring 4.70mm × 6.30mm with 0.8mm ball pitch. It is RoHS-compliant, moisture sensitivity level (MSL) 3, and features SnAgCu solder balls compatible with both Pb-free and SnPb reflow profiles per IPC/JEDEC J-STD-020.
How does the R⁵ control architecture in the ISL91211BIKZT7AR5878 improve transient response?
The R⁵ (Rapid Robust Ripple Regulator) architecture in the ISL91211BIKZT7AR5878 senses ripple directly at the output capacitor to generate real-time duty-cycle corrections, eliminating phase lag from traditional error amplifiers. This enables sub-10µs recovery from 5A load steps and seamless DCM/CCM transitions - confirmed in Figure 17–20 of the FN9344 datasheet - without external compensation components.
Can the ISL91211BIKZT7AR5878 be configured for I²C or SPI communication?
Yes, the ISL91211BIKZT7AR5878 supports both I²C (up to 3.4MHz) and SPI (up to 26MHz) via configurable MPIO pins (MPIO0–MPIO3) and GPIO0/GPIO1. Pin mode 0x0 defaults to I²C (SCL/SDA), while mode 0x1 enables SPI (SCK/SS_B/MOSI/MISO). Mode selection is set via OTP or register write, allowing field-reprogrammable interface choice.
ISL91211BIKZT7AR5878 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 35-TFBGA
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Programmable
- Number of Outputs:
- 4
- 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, 5A
- Frequency - Switching:
- 2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 35-TFBGA (4.7x6.3)
ISL91211BIKZT7AR5878 FAQ
1.How can I place an order for ISL91211BIKZT7AR5878 through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL91211BIKZT7AR5878 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 ISL91211BIKZT7AR5878 reliable?
The price and inventory of ISL91211BIKZT7AR5878 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL91211BIKZT7AR5878 is usually 5 days.
3.What payment methods are accepted for ISL91211BIKZT7AR5878?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL91211BIKZT7AR5878 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL91211BIKZT7AR5878?
ISL91211BIKZT7AR5878 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL91211BIKZT7AR5878 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 ISL91211BIKZT7AR5878?
For technical support, including ISL91211BIKZT7AR5878 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL91211BIKZT7AR5878 requirements.
6.How does Aetrix verify that ISL91211BIKZT7AR5878 is sourced from the original manufacturer or authorized distributors?
All ISL91211BIKZT7AR5878 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 ISL91211BIKZT7AR5878 meets industry standards.
7.What is the process for return or replacement of ISL91211BIKZT7AR5878?
All ISL91211BIKZT7AR5878 units undergo pre-shipment inspection (PSI). If there is an issue with ISL91211BIKZT7AR5878, 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 ISL91211BIKZT7AR5878 part is unused and in its original packaging.
Return procedure for ISL91211BIKZT7AR5878:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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