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Renesas ISL62883IRTZ-T
- Part No.:
- ISL62883IRTZ-T
- Manufacturer:
- Renesas
- Category:
- Special Purpose Regulators
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
ISL62883IRTZ-T.pdf
- Description:
- IC REG CTRL IMVP-6.5 1OUT 40TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,676
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Product details
Overview
ISL62883IRTZ-T from Intersil is a 3-phase PWM buck regulator IC designed for IMVP-6.5™ mobile CPU core power delivery. It delivers precision voltage regulation (±0.8% system accuracy over -40°C to +100°C), supports 7-bit VID input (0.300V–1.500V in 12.5mV steps), integrates two gate drivers, and enables diode emulation mode for light-load efficiency in notebook computing platforms.
For engineers reviewing the ISL62883IRTZ-T datasheet, ISL62883IRTZ-T pinout, ISL62883IRTZ-T application, or ISL62883IRTZ-T equivalent, key selection criteria include IMVP-6.5™ compliance, programmable 1-/2-/3-phase operation, differential remote sensing (VSEN/RTN), DCR/resistor current sensing flexibility, and thermal monitoring via NTC input.
Technical Context
The ISL62883IRTZ-T implements Intersil's Robust Ripple Regulator (R3™) modulator architecture, combining variable-frequency transient response with fixed-frequency stability. It uses interleaved phase timing (120° in 3-phase, 180° in 2-phase) to reduce output ripple and improve dynamic current balance across phases.
It supports PSI# and DPRSLPVR signals to dynamically drop PWM3 and Phase-2 under low-load conditions, adjusts overcurrent thresholds per phase count, and provides adaptive body diode conduction time reduction during diode emulation mode to minimize reverse-conduction losses.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Regulation Accuracy | ±0.8% over -40°C to +100°C at VID = 0.75–1.50V; ensures stable CPU core voltage under thermal stress |
| VID Range | 0.300V–1.500V in 12.5mV steps (7-bit); enables precise microprocessor voltage identification per IMVP-6.5™ |
| Phase Configuration | Programmable 1-, 2-, or 3-phase operation; allows scalable power delivery matching CPU TDP requirements |
| Switching Frequency | 200–500 kHz adjustable via VW pin resistor; balances efficiency vs. component size in compact notebooks |
| Current Sensing | Supports lossless DCR sensing or precision resistor sensing with NTC thermal compensation; maintains accuracy across temperature |
| Thermal Monitoring | NTC input with 53–67 µA source current and 1.18–1.22 V overtemperature threshold; enables accurate VR_TT# assertion |
| Gate Drive Capability | UGATE/LGATE sink/source ≥2.0 A; drives high-side and low-side MOSFETs directly without external buffers |
Pinout & Package
ISL62883IRTZ-T is housed in a Pb-free 40-lead 5x5 mm TQFN package (L40.5x5) with exposed GND pad on bottom. Pin functions are validated per FN6891 Rev 4.00 datasheet, Page 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VID0–VID6 | Voltage ID input (LSB to MSB) | Directly sets target core voltage per IMVP-6.5™ VID table; supports on-the-fly VID changes |
| VR_ON | Regulator enable input | High-level logic (>0.75 V) activates full control loop; leakage <1 µA in disable state |
| VSEN / RTN | Differential remote sense inputs | Enables die-level voltage regulation by connecting to CPU VCCIN and ground pins |
| ISEN1–ISEN2 | Phase current sense inputs | Accept DCR or resistor-based current signals; imbalance tolerance ≤1 mV ensures phase balancing |
| UGATE1 / LGATE1 | Phase-1 gate driver outputs | Drive high-side and low-side MOSFET gates with 2.0 A sink/source capability and <30 ns deadtime |
| PWM3 | Third-phase PWM output | Disables Phase-3 when pulled to 5 V; enables dynamic phase shedding under PSI# assertion |
| IMON | Analog current monitor output | Delivers 120 µA ±10% per 20 µA ISUM- current; used for system-level load reporting and telemetry |
| PGOOD | Open-drain power-good indicator | Asserts after ~7 ms when output is within 10% of target; requires external 680 Ω pull-up to VCCP |
Key Features
| Feature | Design Value |
|---|---|
| R3™ Modulator Architecture | Variable switching frequency during transients improves response speed; fixed-frequency baseline enhances EMI predictability |
| Adaptive Body Diode Reduction | Minimizes reverse-conduction loss in diode emulation mode by turning off LGATE at zero-crossing |
| User-selectable Overshoot Reduction | Reduces required output capacitance by limiting peak inrush; configurable to avoid thermal stress trade-offs |
| FB2 Function in 2-Phase Mode | Switches ISEN3/FB2 pin to FB path to optimize compensation for single-phase operation during phase shedding |
| Differential Remote Sensing | VSEN/RTN pair rejects PCB IR drop, enabling ±0.5% regulation accuracy at CPU die despite board parasitics |
Applications
| Notebook CPU Core Power | Mobile Platform VRM Subsystem |
|---|---|
Use Scenario: High-performance ultrabook requiring dynamic voltage scaling and multi-phase efficiency across 5W–45W CPU TDP. IC Role / Device Role / Timing Role: Primary multiphase PWM controller managing core rail (VCCIN), implementing IMVP-6.5™ protocol, and coordinating phase shedding via PSI#/DPRSLPVR. Use Value: Enables >90% efficiency at 15A load and <1% voltage deviation during 10A/µs transients using integrated R3™ modulation. | Use Scenario: OEM motherboard design needing robust, thermally compensated core regulation with minimal BOM count. IC Role / Device Role / Timing Role: Central VRM controller providing VID decoding, droop-based load line, IMON telemetry, and thermal shutdown via NTC. Use Value: Eliminates need for external current-sense amplifiers and discrete thermal monitors-reducing layout area by ~25%. |
| IMVP-6.5™ Compliant Laptop VRM | Thermally Adaptive Mobile Power System |
Use Scenario: Intel Core i5/i7 platform requiring strict compliance with IMVP-6.5™ specification for voltage accuracy, sequencing, and protection. IC Role / Device Role / Timing Role: Certified IMVP-6.5™ regulator executing VID-to-voltage conversion, adaptive body diode control, and PGOOD/CLK_EN# timing coordination. Use Value: Guarantees boot compatibility and runtime stability with Intel reference firmware; meets ±0.8% system accuracy requirement. | Use Scenario: Fanless tablet design where thermal headroom limits sustained power delivery. IC Role / Device Role / Timing Role: Thermal-aware controller using NTC input to scale VR_TT# response and adjust OCP thresholds before junction overheating. Use Value: Extends safe operating time under sustained load by preemptively reducing phase count and increasing diode emulation duty. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multiphase CPU core regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL62883HRTZ | Same silicon, -10°C to +100°C ambient rating; lacks extended industrial temp range | Suitable only for consumer-grade notebooks without sub-zero startup requirement | Select ISL62883HRTZ if ambient operating range stays above -10°C and cost sensitivity outweighs thermal margin needs. |
| RT8803AGQW | 3-phase IMVP-7.0 controller; higher max VID (1.55V), tighter ±0.5% accuracy, no FB2 function | Targets newer CPUs requiring IMVP-7.0; not backward-compatible with IMVP-6.5™ PSI#/DPRSLPVR signaling | Choose RT8803AGQW only for next-gen designs migrating to IMVP-7.0; verify firmware and phase-shedding logic compatibility. |
Compared with ISL62883HRTZ, the ISL62883IRTZ-T offers wider temperature support (-40°C to +100°C) critical for automotive-adjacent or ruggedized notebooks, while RT8803AGQW provides higher accuracy and newer protocol support but requires full system revalidation.
Availability
ISL62883IRTZ-T is available at Aetrix Electronics and suitable for notebook computers, mobile VRMs, and IMVP-6.5™-compliant CPU power systems requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for ISL62883IRTZ-T 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
Intersil (now part of Renesas Electronics) is a semiconductor company specializing in high-performance analog and power management ICs for computing, industrial, and communications markets.
The ISL62883IRTZ-T belongs to Intersil's IMVP-6.5™ multiphase regulator product line, engineered specifically for energy-efficient, thermally adaptive core voltage regulation in space-constrained mobile platforms.
FAQ
What is the operating temperature range of the ISL62883IRTZ-T?
The ISL62883IRTZ-T is rated for an ambient temperature range of -40°C to +100°C and a junction temperature range of -40°C to +125°C. This extended industrial range distinguishes it from the ISL62883HRTZ (-10°C to +100°C) and makes it suitable for fanless or thermally demanding notebook deployments where cold-start reliability is essential. The datasheet specifies all electrical parameters over this full range.
How does the ISL62883IRTZ-T implement diode emulation mode?
The ISL62883IRTZ-T implements diode emulation by monitoring the PHASE node voltage during light-load conditions. When the low-side MOSFET (LGATE) is active and the phase node voltage reaches zero, the controller turns off LGATE to prevent reverse current flow-emulating a Schottky diode's unidirectional conduction. This reduces switching and conduction losses, improving efficiency in DCM. The adaptive body diode conduction time reduction function ensures precise zero-crossing detection independent of MOSFET RDS(on) variation.
Can the ISL62883IRTZ-T be configured for single-phase operation?
Yes, the ISL62883IRTZ-T supports user-programmable 1-, 2-, or 3-phase operation via external configuration resistors and VID pin states. In 1-phase mode, the FB2 function is disabled and the ISEN3/FB2 pin serves solely as ISEN3. The controller maintains full regulation accuracy and protection features-including overcurrent detection scaled for single-phase current-and retains differential remote sensing and IMON functionality. Startup timing and soft-start behavior remain consistent across configurations.
What current sensing methods does the ISL62883IRTZ-T support?
The ISL62883IRTZ-T supports two validated current sensing methods: (1) lossless inductor DCR sensing, where voltage across the inductor's intrinsic resistance is measured and thermally compensated using a single NTC thermistor on the NTC pin; and (2) precision resistor sensing, using discrete current-sense resistors in series with each phase. Both methods feed into the ISUM+ and ISUM− inputs for droop-based load line implementation, current monitoring (IMON), and overcurrent protection with thresholds adjusted per phase count.
Does the ISL62883IRTZ-T provide differential remote voltage sensing?
Yes, the ISL62883IRTZ-T provides true differential remote voltage sensing via dedicated VSEN and RTN pins. VSEN connects to the CPU core voltage (VCCIN) pin, and RTN connects to the CPU ground reference point-both located at the processor die. This topology rejects PCB trace resistance and inductance, enabling ±0.5% closed-loop regulation accuracy at the die regardless of board-level IR drop. The internal error amplifier uses this differential signal as its inverting input (FB pin), ensuring regulation fidelity matches IMVP-6.5™ requirements.
ISL62883IRTZ-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 40-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Controller, Intel IMVP-6.5™
- Voltage - Input:
- 5V ~ 21V
- Number of Outputs:
- 1
- Voltage - Output:
- 0.013V ~ 1.5V
- Operating Temperature:
- -40°C ~ 100°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 40-TQFN (5x5)
ISL62883IRTZ-T FAQ
1.How can I place an order for ISL62883IRTZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL62883IRTZ-T 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 ISL62883IRTZ-T reliable?
The price and inventory of ISL62883IRTZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL62883IRTZ-T is usually 5 days.
3.What payment methods are accepted for ISL62883IRTZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL62883IRTZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL62883IRTZ-T?
ISL62883IRTZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL62883IRTZ-T 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 ISL62883IRTZ-T?
For technical support, including ISL62883IRTZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL62883IRTZ-T requirements.
6.How does Aetrix verify that ISL62883IRTZ-T is sourced from the original manufacturer or authorized distributors?
All ISL62883IRTZ-T 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 ISL62883IRTZ-T meets industry standards.
7.What is the process for return or replacement of ISL62883IRTZ-T?
All ISL62883IRTZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL62883IRTZ-T, 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 ISL62883IRTZ-T part is unused and in its original packaging.
Return procedure for ISL62883IRTZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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