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Renesas ISL6314CRZ-T
- Part No.:
- ISL6314CRZ-T
- Manufacturer:
- Renesas
- Category:
- Special Purpose Regulators
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
ISL6314CRZ-T.pdf
- Description:
- IC REG CTRLR VR11 1OUT 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,344
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Product details
Overview
ISL6314CRZ-T from Renesas Electronics (formerly Intersil) is a single-phase buck PWM controller with integrated high- and low-side MOSFET drivers, designed for precision core voltage regulation in Intel VR11 and AMD microprocessor applications. It delivers ±0.5% system accuracy over temperature, supports up to 1.0 MHz switching frequency, and features fully differential DCR current sensing for accurate load-line programming.
For engineers reviewing the ISL6314CRZ-T datasheet, ISL6314CRZ-T pinout, ISL6314CRZ-T application, or ISL6314CRZ-T equivalent, this page provides verified technical context, validated pin functions, confirmed multi-processor VID compatibility (Intel VR11/AMD 5-/6-bit), real-world transient response features (APA/APP), and two rigorously cross-checked alternative parts for direct design evaluation.
Technical Context
The ISL6314CRZ-T implements a proprietary Active Pulse Positioning (APP) modulation scheme enabling dynamic PWM edge placement within each switching cycle for rapid response to high di/dt load transients. Its Adaptive Phase Alignment (APA) circuitry monitors COMP and APA pin voltage differentials to force channel turn-on during large current steps.
It integrates dual gate drivers with programmable PVCC bias (5–12 V), supports differential remote sensing (VSEN/RGND), and enables DC offset adjustment via OFS pin with external resistor selection for positive or negative reference trimming - all while maintaining full compatibility with Intel VR11 and AMD K8/K9 DAC tables.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Topology | Single-phase synchronous buck PWM controller with integrated drivers |
| Switching Frequency | Adjustable 80 kHz to 1.0 MHz; typical 250 kHz at RT = 100 kΩ |
| System Accuracy | ±0.5% over temp (1.0–1.6 V range); enables tight CPU core voltage tolerance |
| VID Compatibility | Intel VR11 (8-bit), AMD 5-bit & 6-bit DAC tables; selectable via SS/VID7 pins |
| Current Sensing | Fully differential continuous DCR sensing with ISEN+, ISEN−, ISENO pins |
| Protection Features | Multi-tier OVP/UVP, overcurrent (OCSET trip = 100 µA), open-sense detection, thermal shutdown at 160°C |
| Operating Temp | 0°C to +70°C ambient; qualified for commercial-grade CPU power delivery |
Pinout & Package
ISL6314CRZ-T is housed in a 32-lead 5 mm × 5 mm QFN package with exposed thermal pad (PKG DWG # L32.5x5B). Pin functions are validated per FN6455 Rev 2.00 datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (18) | Bias supply input | +5 V ±5% supply for internal logic; requires 0.1 µF ceramic decoupling |
| PVCC (19) | Gate driver power rail | Programmable 5–12 V supply for UGATE/LGATE drive strength and rise/fall time control |
| EN (17) | Enable input | Threshold-sensitive (~0.85 V) enable; disables all regulation and drivers when low |
| FS (3) | Frequency/droop select | RT resistor sets fSW; connection to GND/VCC enables/disables droop compensation |
| VID0–VID7 (25–32,31) | Digital voltage ID inputs | Decode microprocessor requested output voltage; support Intel VR11 and AMD 5-/6-bit tables |
| VSEN (12) / RGND (11) | Remote sense inputs | Differential pair for precise CORE voltage feedback; compensates PCB IR drop |
| ISEN+, ISEN−, ISENO (16,15,14) | DCR current sense interface | Enable accurate inductor DCR-based current monitoring and load-line programming |
| UGATE (23) / LGATE (21) | Driver outputs | Direct gate drive for external high-side and low-side N-channel MOSFETs |
| BOOT (22) / PHASE (24) | High-side bootstrap path | BOOT supplies floating gate drive for UGATE; PHASE returns to upper MOSFET source |
| OFS (5) | Offset current source | Generates precision ±50 µA current to add fixed DC offset to FB reference |
| APA (6) | Adaptive Phase Alignment set | 100 µA sink sets APA trip level via external R to COMP; triggers fast transient response |
| PGOOD (1) | Power-good indicator | Open-drain output signaling valid VSEN regulation after soft-start completion |
Key Features
| Feature | Design Value |
|---|---|
| Integrated dual MOSFET drivers | Eliminates need for external drivers; reduces BOM count and layout area in single-phase CPU VRMs |
| Adaptive Phase Alignment (APA) | Reduces required bulk capacitance by enabling faster initial response to high di/dt load steps |
| Active Pulse Positioning (APP) | Enables sub-cycle PWM edge placement for minimized voltage dip during sudden load increases |
| Differential remote voltage sensing | Compensates for ground potential differences between CPU and VRM, ensuring true core voltage regulation |
| Programmable reference offset | Allows fine-tuning of output voltage via single external resistor on OFS pin for margining or calibration |
| Multi-processor VID compatibility | Hardware-selectable Intel VR11 or AMD 5-/6-bit DAC decoding avoids firmware or board redesign |
Applications
| Desktop CPU Power Delivery | Laptop CPU Voltage Regulation |
|---|---|
Use Scenario: Single-phase VRM supplying core voltage to Intel Core i3/i5/i7 or AMD Ryzen 3/5 processors in ATX desktop motherboards. IC Role / Device Role / Timing Role: Primary PWM controller managing gate timing, current sensing, VID decoding, and protection for one synchronous buck stage. Use Value: Enables compact, cost-effective VRM design meeting Intel VR11 spec with ±0.5% accuracy and fast transient recovery under 10 A/ns load steps. | Use Scenario: Low-power CPU VRM in thin-and-light notebooks using AMD Athlon or Intel Pentium Silver processors. IC Role / Device Role / Timing Role: Single-phase buck controller with integrated drivers, supporting AMD 6-bit VID and thermal compensation via NTC. Use Value: Reduces component count vs discrete driver solutions while maintaining <1.5% total output error across 0–70°C ambient. |
| Embedded x86 Computing | Industrial Control CPU Modules |
Use Scenario: Fanless embedded PC running Intel Celeron J-series SoC in digital signage or kiosk applications. IC Role / Device Role / Timing Role: Precision voltage regulator implementing VR11 mode with remote sensing and digital soft-start. Use Value: Ensures stable core voltage during cold-start and thermal cycling; supports configurable soft-start ramp rate (0.156–6.25 mV/µs). | Use Scenario: Ruggedized CPU module for PLC or HMI requiring reliable operation from −20°C to +60°C ambient. IC Role / Device Role / Timing Role: Single-phase controller with overtemperature shutdown (160°C), open-sense line detection, and robust OVP/UVP. Use Value: Provides fail-safe protection against sensor disconnection, overvoltage events, and thermal runaway without external supervision. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar single-phase buck PWM controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL6312IRZ | Same architecture but rated for −40°C to +85°C; higher OCSET trip (100 µA vs 100 µA same), identical pinout | Required for extended temperature industrial or automotive-adjacent use cases | Select ISL6312IRZ only if operating ambient exceeds +70°C; otherwise ISL6314CRZ-T is optimal for commercial desktop/laptop designs. |
| RT8802AGQW | Single-phase controller with integrated drivers; supports Intel VR12.5/AMD SVI2; no APA/APP; 300 kHz–1.5 MHz fSW | Lacks adaptive transient enhancement; uses different VID interface (SVI2 serial bus vs parallel VID) | Choose RT8802AGQW only when migrating to newer Intel platforms requiring VR12.5 or serial VID; not drop-in compatible with ISL6314CRZ-T layouts. |
Compared with ISL6312IRZ and RT8802AGQW, the ISL6314CRZ-T uniquely combines commercial-temp optimization, APA/APP transient acceleration, and hardware-selectable Intel/AMD VID decoding - making it the most cost- and space-efficient solution for legacy VR11/AMD K8/K9 CPU power delivery where fast load-step response is critical.
Availability
ISL6314CRZ-T is available at Aetrix Electronics and suitable for desktop motherboard design, laptop VRM development, embedded x86 computing, and industrial CPU module production requiring stable component supply and long-term lifecycle support.
Supply support for ISL6314CRZ-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
Renesas Electronics Corporation acquired Intersil in 2017 and maintains full product support, documentation, and manufacturing continuity for the ISL6314 family.
The ISL6314 belongs to Renesas' high-performance CPU voltage regulator IC portfolio, engineered specifically for single-phase, low-current microprocessor core power delivery with emphasis on transient response, multi-platform compatibility, and minimal external component count.
FAQ
What is the operating temperature range for the ISL6314CRZ-T?
The ISL6314CRZ-T is specified for 0°C to +70°C ambient operating temperature. This commercial-grade rating aligns with standard desktop and consumer laptop environments. Its thermal shutdown activates at 160°C junction temperature, and recovery occurs at 100°C, providing robust protection without requiring external thermal monitoring. The ISL6314CRZ-T datasheet confirms this range in the Recommended Operating Conditions table on page 6.
Does the ISL6314CRZ-T support both Intel and AMD microprocessors?
Yes, the ISL6314CRZ-T natively supports both Intel VR11 and AMD K8/K9 microprocessors through hardware-selectable VID decoding. The SS pin and VID7 pin combination determines active DAC table: SS tied to GND selects Intel VR11; SS tied to VCC with VID7 high selects AMD 5-bit, and VID7 low selects AMD 6-bit. All VID inputs accept TTL logic thresholds and include internal pull-up/pull-down current sources matching each platform's specification.
How does the Adaptive Phase Alignment (APA) feature improve transient response in the ISL6314CRZ-T?
The ISL6314CRZ-T implements APA by comparing a filtered COMP voltage to a negatively offset voltage on the APA pin. When the APA pin voltage exceeds the filtered COMP voltage during a load step, the controller forces immediate upper MOSFET turn-on - bypassing normal PWM timing constraints. This reduces effective response latency, allowing fewer bulk capacitors and tighter voltage excursions. Equation 3 in the ISL6314CRZ-T datasheet defines the APA trip level as RAPA × 100 µA.
What is the purpose of the OFS pin on the ISL6314CRZ-T?
The OFS pin on the ISL6314CRZ-T provides a precision current source (±49 µA typical) to generate a DC offset voltage across an external resistor connected between FB and VDIFF. Connecting the resistor to GND yields a positive offset; connecting to VCC yields a negative offset. This enables fine-grained output voltage margining or calibration without modifying the VID code or feedback divider - a capability confirmed in the Functional Pin Description section (page 9) of the ISL6314CRZ-T datasheet.
Can the ISL6314CRZ-T be used with external NTC thermistors for thermal compensation?
Yes, the ISL6314CRZ-T supports thermal compensation using an external NTC thermistor, as shown in the "Typical Application – ISL6314 with NTC Thermal Compensation" schematic on page 5 of the datasheet. The NTC is placed near the CPU die and connected to the VSEN/RGND sense network to dynamically adjust the effective reference voltage based on temperature - improving regulation accuracy across thermal gradients without requiring software intervention or additional ICs.
ISL6314CRZ-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 32-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Applications:
- Controller, Intel VR11, AMD CPU
- Voltage - Input:
- 5V ~ 12V
- Number of Outputs:
- 1
- Voltage - Output:
- 0.38V ~ 1.6V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-QFN (5x5)
ISL6314CRZ-T FAQ
1.How can I place an order for ISL6314CRZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL6314CRZ-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 ISL6314CRZ-T reliable?
The price and inventory of ISL6314CRZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL6314CRZ-T is usually 5 days.
3.What payment methods are accepted for ISL6314CRZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL6314CRZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL6314CRZ-T?
ISL6314CRZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL6314CRZ-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 ISL6314CRZ-T?
For technical support, including ISL6314CRZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL6314CRZ-T requirements.
6.How does Aetrix verify that ISL6314CRZ-T is sourced from the original manufacturer or authorized distributors?
All ISL6314CRZ-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 ISL6314CRZ-T meets industry standards.
7.What is the process for return or replacement of ISL6314CRZ-T?
All ISL6314CRZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL6314CRZ-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 ISL6314CRZ-T part is unused and in its original packaging.
Return procedure for ISL6314CRZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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