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Renesas ISL6363IRTZ-T
- Part No.:
- ISL6363IRTZ-T
- Manufacturer:
- Renesas
- Category:
- Special Purpose Regulators
- Package:
- 48-WFQFN Exposed Pad
- Datasheet:
-
ISL6363IRTZ-T.pdf
- Description:
- IC REG CTRLR VR12 2OUT 48TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,602
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Product details
Overview
ISL6363IRTZ-T from Intersil is a dual-output multiphase PWM controller for VR12™ desktop CPU core and graphics power supplies. It integrates three gate drivers, supports 4/3/2/1-phase VR1 and 1-phase VR2, delivers 0.5% system voltage accuracy over temperature, enables DCR current sensing with single NTC compensation, and operates across –40°C to +85°C industrial range in 48-lead 6×6 TQFN package.
For engineers reviewing the ISL6363IRTZ-T datasheet, ISL6363IRTZ-T pinout, ISL6363IRTZ-T application, or ISL6363IRTZ-T equivalent, this page provides verified technical context, confirmed pin functions, VR12-compliant SVID interface details, R3 modulator transient performance data, and validated alternative options for desktop VR design.
Technical Context
The ISL6363IRTZ-T implements Intel VR12™ protocol via SVID bus (SDA/ALERT#/SCLK) and uses Intersil's patented Robust Ripple Regulator (R3) modulator architecture. Its dual-modulator design independently controls VR1 (configurable 1–4 phase) and VR2 (fixed 1-phase), sharing serial communication but maintaining separate error amplifiers (COMP/COMPG), remote sensing (VSEN/RTN, FBG/RTNG), and protection circuits.
Each VR output supports lossless DCR current sensing with dedicated summing inputs (ISUMP/ISUMN for VR1; ISUMPG/ISUMNG for VR2), programmable IMAX/TMAX via resistor-to-GND on COMP/COMPG, and adaptive body diode conduction time reduction. PSICOMP pin enables high-frequency load transient compensation in PS2/3 mode by switching in additional Type-III compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VR1 Phase Config | Configurable 4/3/2/1-phase operation - enables scalable core rail design from high-end quad-phase to entry-level single-phase CPUs. |
| VR2 Phase Count | Fixed 1-phase output - dedicated graphics or auxiliary rail with independent regulation and monitoring. |
| System Accuracy | ±0.8% over –40°C to +85°C (IRTZ grade) - ensures stable VID tracking across full industrial temperature range. |
| Switching Frequency | 200–500 kHz adjustable via VW/COMPG resistors - allows optimization of efficiency vs. size trade-offs in multi-phase layout. |
| R3 Modulator Response | Variable frequency during transients - increases effective bandwidth during 65A step load (2µs/div settling shown in Fig 1). |
| Current Sensing | Lossless DCR sensing with single NTC thermistor - eliminates sense resistor losses while enabling accurate thermal compensation for both VRs. |
| Protection Features | Per-phase OC detection (16–71 µA thresholds), VR_HOT# thermal alert, PGOOD per VR, and adaptive non-overlap timing - ensures robust fault containment without external circuitry. |
Pinout & Package
Package: 48-lead 6×6 mm TQFN (Pb-free, L48.6x6 drawing), exposed thermal pad (Bottom Pad = GND), MSL3 per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Bottom Pad) | Common ground reference & thermal path | Must be soldered to large PCB copper pour for thermal dissipation and low-noise signal reference. |
| PGOOD / PGOODG | Open-drain power-good indicators | Separate status signals for VR1 and VR2 - require external pull-up (680Ω to 5V or 1kΩ to 3.3V) before CPU enable release. |
| VSEN / RTN / FB / COMP | VR1 remote sensing & regulation loop | Differential VSEN/RTN minimizes IR drop error; FB sets target voltage; COMP outputs error amp signal and programs IMAX/VBOOT. |
| FBG / RTNG / COMPG | VR2 remote sensing & regulation loop | Independent feedback path - COMPG programs VR2 IMAX and shared TMAX; enables decoupled tuning of graphics rail. |
| UGATE1/LGATE1/PHASE1/BOOT1 | VR1 Phase 1 gate drive interface | Direct connection to high-side/low-side MOSFET gates; PHASE1 is switching node; BOOT1 requires MLCC to PHASE1 for high-side drive. |
| SDA/ALERT#/SCLK | SVID serial interface | 3-wire bus to CPU - handles VID updates, telemetry (IMON/IMONG), thermal alerts (VR_HOT#), and mode transitions (PS0–PS3). |
Key Features
| Feature | Design Value |
|---|---|
| Dual VR Architecture | Single-chip integration of VR1 (scalable phases) and VR2 (dedicated 1-phase) reduces BOM count and board area versus dual-controller solutions. |
| R3 Modulator Transient Response | Sub-2µs settling on 65A load step (Fig 1) - achieves faster voltage recovery than fixed-frequency PWM, critical for modern CPU burst loads. |
| PSICOMP Compensation | External RC network on PSICOMP enables dynamic Type-III compensation during PS2/3 mode - improves gain/phase margin under high-frequency transients. |
| DCR Current Sensing w/ NTC | Single NTC thermistor compensates DCR drift for both VRs - eliminates need for two discrete thermistors and associated routing complexity. |
| Programmable Switching Frequency | Resistor from VW/VRWG to COMP/COMPG sets fSW from 200–500 kHz - allows optimization for ceramic capacitor ESR, core loss, and EMI filtering. |
| Adaptive Body Diode Reduction | Internally shortens low-side FET conduction during light load - reduces reverse recovery losses and improves efficiency below 10% load. |
Applications
| Desktop CPU Core Power | Discrete GPU Power |
|---|---|
Use Scenario: Primary voltage regulation for Intel LGA1155/1156/1366 desktop CPUs compliant with VR12™ specification. IC Role / Device Role / Timing Role: Dual-output VR controller managing core (VR1) and graphics (VR2) rails via SVID bus; coordinates phase shedding and load-line droop. Use Value: Enables precise 0.5% voltage accuracy and fast transient response required for CPU turbo boost and power-state transitions (C-states). |
Use Scenario: Dedicated 1-phase power supply for PCIe-based discrete GPUs requiring independent voltage control and telemetry. IC Role / Device Role / Timing Role: VR2 operates as standalone graphics regulator with separate PGOODG, IMONG, and thermal monitoring (NTCG/VR_HOT#). Use Value: Eliminates need for secondary controller - reduces cost and layout area while maintaining full SVID compliance for GPU power management. |
| Multi-Phase VR Scalability | Thermally Compensated DCR Sensing |
Use Scenario: Flexible motherboard design supporting multiple CPU SKUs (dual-core to quad-core) using same VR layout. IC Role / Device Role / Timing Role: VR1 dynamically configures 1–4 phases via SVID command; PWM3/PWM4 pins disable unused phases without firmware change. Use Value: Reduces SKU proliferation - one PCB design accommodates varying processor power requirements through software-configurable phase count. |
Use Scenario: High-efficiency VR design minimizing sense resistor losses while maintaining current measurement accuracy across temperature. IC Role / Device Role / Timing Role: Uses ISUMP/ISUMN and ISUMPG/ISUMNG inputs with single NTC on NTC/NTCG pins to compensate DCR drift for both VRs. Use Value: Achieves <1% current-sense error from –40°C to +85°C - critical for accurate power delivery and thermal throttling decisions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multiphase VR controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL6364CRTZ-T | Commercial-grade (0°C to +70°C), identical pinout and feature set - lacks industrial temp rating and tighter ±0.5% accuracy spec. | Valid only for consumer desktops without extended thermal requirements; not suitable for embedded or industrial PC platforms. | Select when cost sensitivity outweighs industrial temperature support and highest accuracy needs. |
| IR3567BTRPBF | Single-die dual-VR controller with VR12.5/VR13 support, integrated MOSFET drivers, and enhanced telemetry - no PSICOMP pin or R3 modulator. | Supports newer CPU generations and higher current density; requires different compensation network and layout due to distinct modulator behavior. | Choose for VR12.5+ designs needing backward compatibility and improved digital telemetry, accepting different transient tuning methodology. |
Compared with ISL6363IRTZ-T, ISL6364CRTZ-T offers identical functionality at lower cost but sacrifices industrial temperature range and system accuracy; IR3567BTRPBF extends protocol support and telemetry depth but replaces R3's analog transient advantage with digital control architecture.
Availability
ISL6363IRTZ-T is available at Aetrix Electronics and suitable for desktop motherboard development, VR12-compliant CPU power delivery, and discrete GPU power supply designs requiring stable component supply and long-term industrial temperature support.
Supply support for ISL6363IRTZ-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 precision analog and power management ICs for computing, industrial, and communications markets.
The ISL6363 product line was designed specifically for Intel VR12™ desktop CPU power delivery, integrating dual VR control, R3 modulator technology, and SVID compliance into a single-package solution for high-efficiency, low-noise core and graphics regulation.
FAQ
What is the operating temperature range for the ISL6363IRTZ-T?
The ISL6363IRTZ-T is rated for industrial temperature operation from –40°C to +85°C ambient, as specified in the ordering information table (Page 2 of FN6898). This range supports deployment in demanding desktop environments including small-form-factor PCs and embedded systems where thermal margins exceed commercial-grade limits. The IRTZ suffix explicitly denotes this industrial qualification.
Does the ISL6363IRTZ-T support VR12.5 or later CPU specifications?
No, the ISL6363IRTZ-T is fully compliant with VR12™ specifications only, as stated in the datasheet title and Feature section. It does not support VR12.5, VR13, or newer protocols - those require controllers like the IR3567BTRPBF or ISL6367. Attempting VR12.5 operation may result in incorrect VID interpretation or missing telemetry features.
How is the switching frequency programmed on the ISL6363IRTZ-T?
The ISL6363IRTZ-T uses resistor dividers from VW to COMP (for VR1) and from VWG to COMPG (for VR2) to set nominal switching frequency between 200 kHz and 500 kHz. Table 7 (Page 28) provides exact resistor values; for example, an 8.06 kΩ resistor yields 300 kHz typical. Frequency remains adjustable across load and temperature within the programmed range.
Can the ISL6363IRTZ-T operate with only one VR output enabled?
Yes, the ISL6363IRTZ-T supports independent enable/disable of VR1 and VR2 via the VR_ON pin and SVID commands. Pulling VR_ON low disables both regulators, but SVID can place VR2 in shutdown while keeping VR1 active - confirmed in Theory of Operation (Page 11) and supported by separate PGOODG and IMONG signals.
What is the purpose of the PSICOMP pin on the ISL6363IRTZ-T?
The PSICOMP pin on the ISL6363IRTZ-T enables high-frequency load transient compensation in PS2/3 mode by switching in an additional Type-III compensation network. As described on Page 3, connecting an RC network from PSICOMP to VR1 output improves system gain and phase margin during rapid load changes, directly enhancing stability under graphics-intensive workloads.
ISL6363IRTZ-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 48-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Controller, Intel VR12
- Voltage - Input:
- 5V ~ 12V
- Number of Outputs:
- 2
- Voltage - Output:
- 0.25V ~ 1.52V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-TQFN (6x6)
ISL6363IRTZ-T FAQ
1.How can I place an order for ISL6363IRTZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL6363IRTZ-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 ISL6363IRTZ-T reliable?
The price and inventory of ISL6363IRTZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL6363IRTZ-T is usually 5 days.
3.What payment methods are accepted for ISL6363IRTZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL6363IRTZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL6363IRTZ-T?
ISL6363IRTZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL6363IRTZ-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 ISL6363IRTZ-T?
For technical support, including ISL6363IRTZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL6363IRTZ-T requirements.
6.How does Aetrix verify that ISL6363IRTZ-T is sourced from the original manufacturer or authorized distributors?
All ISL6363IRTZ-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 ISL6363IRTZ-T meets industry standards.
7.What is the process for return or replacement of ISL6363IRTZ-T?
All ISL6363IRTZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL6363IRTZ-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 ISL6363IRTZ-T part is unused and in its original packaging.
Return procedure for ISL6363IRTZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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