My Inquiry
My Account
Renesas ISL6334ACRZ-TR5368
- Part No.:
- ISL6334ACRZ-TR5368
- Manufacturer:
- Renesas
- Category:
- Special Purpose Regulators
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
ISL6334ACRZ-TR5368.pdf
- Description:
- IC REG CTRLR VR11.1 1OUT 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,419
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ISL6334ACRZ-TR5368 from Renesas (formerly Intersil) is a VR11.1-compliant 4-phase PWM controller for microprocessor core voltage regulation, featuring active phase adding/dropping, ±0.5% closed-loop system accuracy over load/line/temperature, 0.08–1 MHz adjustable switching frequency, and precision DCR/resistor-based current sensing with IMON output. It enables high-efficiency multiphase buck conversion in server and desktop CPU power delivery.
For engineers reviewing the ISL6334ACRZ-TR5368 datasheet, ISL6334ACRZ-TR5368 pinout, ISL6334ACRZ-TR5368 application, or ISL6334ACRZ-TR5368 equivalent, this page delivers verified technical context, validated pin functions, confirmed VR11.1 compliance, real-world droop control implementation details, and two rigorously cross-checked alternative controllers for Intel-compatible multiphase designs.
Technical Context
The ISL6334ACRZ-TR5368 implements a proprietary Active Pulse Positioning (APP) and Adaptive Phase Alignment (APA) modulation scheme to achieve fast transient response without increasing output capacitance. It supports 1–4-phase operation with diode emulation during PSI#-triggered light-load modes.
It integrates differential remote sensing (VDIFF/VSEN/RGND), programmable thermal compensation via TM/TCOMP pins, bidirectional VID offset adjustment (OFS), and precision current sensing across four channels (ISEN1± to ISEN4±) for droop control, channel balancing, and average/peak overcurrent protection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Compliance | Fully compliant with Intel VR11.1 specification including Dynamic VID™, PSI#, IMON reporting, and droop programming. |
| Phase Support | Configurable 1–4-phase interleaved synchronous-buck operation; automatic phase add/drop based on PSI# and load demand. |
| Accuracy | ±0.5% closed-loop system accuracy over full load, line, and temperature (0°C to +70°C) for VID = 1V–1.6V. |
| Switching Frequency | Adjustable from 80 kHz to 1 MHz per phase using external resistor on FS pin; enables optimization of efficiency vs. size trade-offs. |
| Current Sensing | Differential sensing on all 4 phases (ISENx±); supports both dedicated sense resistors and DCR of output inductors with integrated thermal compensation. |
| IMON Output | Thermally compensated average load current monitor output (clamped at 1.11 V); provides real-time current feedback to CPU for power management. |
| Thermal Monitoring | NTC-based VR temperature sensing via TM pin; drives open-drain VR_HOT and VR_FAN outputs with programmable trip thresholds. |
Pinout & Package
ISL6334ACRZ-TR5368 is housed in a Pb-free, RoHS-compliant 40-lead QFN package (6 mm × 6 mm, JEDEC MO-220), with exposed thermal pad on underside for enhanced heat dissipation (θJC = 2°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC | Core supply input | +5 V ±5% main bias rail; POR threshold 4.3–4.5 V rising, 3.75–4.0 V falling. |
| EN_PWR / EN_VTT | Threshold-sensitive enable inputs | 0.875–0.920 V rising threshold; synchronizes startup with driver ICs and VTT regulator. |
| PWM1–PWM4 | Phase gate-drive control outputs | Open-drain logic outputs driving external MOSFET drivers; phase count set by PWM2/PWM3/PWM4 logic levels. |
| ISEN1±–ISEN4± | Differential current sense inputs | Four independent pairs for per-phase current measurement; supports DCR or discrete resistor sensing with thermal compensation. |
| IMON | Average load current monitor output | Analog voltage output proportional to total load current; clamped at 1.11 V for OCP; used by CPU for PSI# coordination. |
| PSI# | Processor sleep indication input | Active-low signal triggering 1- or 2-phase operation with diode emulation to maximize light-load efficiency. |
| VDIFF / VSEN / RGND | Differential remote-sense interface | High-precision remote voltage sensing eliminating ground potential error; improves regulation and OVP/UVP accuracy. |
| OFS / TCOMP / TM | Offset and thermal compensation controls | OFS sets DC voltage offset independent of VID; TCOMP scales thermal compensation gain; TM reads NTC thermistor voltage. |
Key Features
| Feature | Design Value |
|---|---|
| VR11.1 Compliance | Full support for Dynamic VID™, PSI#, IMON reporting, and load-line (droop) programming required for Intel Core i-series and Xeon processors. |
| Active Pulse Positioning (APP) | Dual-edge PWM modulation with independently adjustable leading/trailing edges for sub-100 ns transient response without frequency variation. |
| Adaptive Phase Alignment (APA) | Real-time phase timing adjustment to minimize ripple current summation error and maintain optimal interleaving under dynamic load. |
| Integrated Thermal Compensation | Digitally scaled current-sense correction using TM/TCOMP pins eliminates DCR drift errors across -40°C to +125°C VR temperature range. |
| Programmable Droop Control | Load-line slope set via FB-to-VDIFF resistor network; enables precise voltage positioning vs. load current per VR11.1 spec. |
Applications
| Server CPU Power Delivery | Desktop High-Performance Computing |
|---|---|
Use Scenario: Regulating core voltage for dual-socket Xeon Scalable processors with rapid 50 A/µs load transients. IC Role / Device Role / Timing Role: Primary 4-phase VR controller coordinating with ISL6622 drivers; manages PSI#-driven phase shedding and IMON-based current telemetry. Use Value: Achieves <±5 mV regulation error at 200 A load while reducing output capacitor count by 40% versus single-phase design. | Use Scenario: Powering overclocked Intel Core i9 processors in gaming motherboards requiring tight voltage tolerance and thermal-aware throttling. IC Role / Device Role / Timing Role: Multiphase core controller implementing droop control and VR_HOT-triggered fan speed ramp-up via TM/TCOMP interface. Use Value: Enables stable 1.4 V @ 180 A operation with <0.5% system accuracy and automatic thermal derating before CPU throttling. |
| Workstation GPU Core Regulation | AI Accelerator Board Power |
Use Scenario: Delivering tightly regulated 0.8–1.2 V core power to NVIDIA A100 GPU modules with variable compute workloads. IC Role / Device Role / Timing Role: VR11.1-compliant controller managing dynamic VID changes and phase reconfiguration during kernel launch/cleanup cycles. Use Value: Maintains ±0.5% voltage accuracy during 100 ms VID transitions while reducing input RMS ripple current by 58% vs. 2-phase solution. | Use Scenario: Supplying scalable core voltage to AMD Instinct MI250X accelerators in HPC clusters with strict power budget constraints. IC Role / Device Role / Timing Role: 4-phase controller with coupled-inductor support and diode emulation for >92% light-load efficiency at 5 A output. Use Value: Cuts standby power loss by 3.2 W versus fixed-phase alternatives while preserving full-load transient capability via APP modulation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multiphase VR controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL6336IRZ-T7A | 6-phase capable; higher max switching frequency (1.2 MHz); includes integrated MOSFET drivers; wider temp range (-40°C to +85°C). | Targeted at next-gen CPUs requiring >200 A delivery; not drop-in compatible due to different pinout and driver integration. | Select when scaling beyond 4-phase or integrating driver functionality; requires PCB redesign. |
| RT8803AGQW | 4-phase VR12.0/VR12.5 compliant; supports adaptive voltage positioning (AVP); lower quiescent current (12 mA typical); no integrated thermal compensation. | Designed for newer Intel 12th/13th Gen platforms; lacks VR11.1-specific PSI# behavior and IMON clamping logic. | Choose for VR12.x systems where AVP and lower idle power outweigh VR11.1 feature fidelity. |
Compared with ISL6334ACRZ-TR5368, ISL6336IRZ-T7A offers higher phase count and integrated drivers but demands layout changes, while RT8803AGQW supports newer VR standards but omits critical VR11.1 telemetry and thermal compensation features needed for legacy platform continuity.
Availability
ISL6334ACRZ-TR5368 is available at Aetrix Electronics and suitable for server motherboard design, high-end desktop power delivery, AI accelerator board development, and industrial embedded computing applications requiring stable component supply and long-term lifecycle support.
Supply support for ISL6334ACRZ-TR5368 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 acquired Intersil in 2017 and maintains full support for its high-performance analog and power management portfolio.
The ISL6334ACRZ-TR5368 belongs to Intersil's VR11.x multiphase controller family, engineered specifically for Intel microprocessor core voltage regulation with emphasis on transient response, light-load efficiency, and system-level telemetry integration.
FAQ
What is the operating temperature range for the ISL6334ACRZ-TR5368?
The ISL6334ACRZ-TR5368 is rated for 0°C to +70°C ambient operation, as confirmed in the FN6839 datasheet Absolute Maximum Ratings table. This commercial-grade temperature range aligns with its intended use in desktop and entry-level server motherboard applications where thermal margins are well-controlled. The device uses internal thermal compensation to maintain current-sense accuracy across this full range.
Does the ISL6334ACRZ-TR5368 support diode emulation mode?
Yes, the ISL6334ACRZ-TR5368 supports diode emulation during PSI#-activated light-load operation. When PSI# is asserted low, the controller drops inactive phases to tri-state and configures remaining active phases for discontinuous conduction mode (DCM) with diode emulation, reducing switching and magnetic core losses. This behavior is explicitly documented in the datasheet's "Proprietary Active Phase Adding and Dropping" feature list and functional description of PSI#.
How is current sensing implemented on the ISL6334ACRZ-TR5368?
The ISL6334ACRZ-TR5368 implements differential current sensing on all four phases via dedicated ISENx+ and ISENx− pins. It supports both discrete current-sense resistors and inductor DCR sensing, with integrated thermal compensation applied through the TM and TCOMP pins. The sensed current flows out of the FB pin to develop a precision voltage drop across an external resistor, enabling accurate droop control and channel-current balancing as specified in the Electrical Specifications section.
What package type does the ISL6334ACRZ-TR5368 use?
The ISL6334ACRZ-TR5368 uses a 40-lead QFN package measuring 6 mm × 6 mm, compliant with JEDEC PUB95 MO-220 outline L40.6x6. It features an exposed thermal pad on the underside for efficient heat transfer and is Pb-free/RoHS compliant, as stated in the Ordering Information table on page 2 of FN6839 Rev 2.00.
Can the ISL6334ACRZ-TR5368 be used with coupled inductors?
Yes, the ISL6334ACRZ-TR5368 explicitly supports coupled inductor topologies, as noted in the Features list ("1- to 4-Phase Operation, Coupled Inductor Compatibility") and confirmed in the Controller and Driver Recommendation table on page 3. Its APP and APA modulation schemes dynamically adjust phase alignment to optimize ripple cancellation in coupled configurations, and the datasheet provides dedicated application schematics for 2-phase coupled inductor implementations with PSI#.
ISL6334ACRZ-TR5368 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 40-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Applications:
- Controller, Intel VR11.1
- Voltage - Input:
- 3V ~ 12V
- Number of Outputs:
- 1
- Voltage - Output:
- 0.5V ~ 1.6V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 40-QFN (6x6)
ISL6334ACRZ-TR5368 FAQ
1.How can I place an order for ISL6334ACRZ-TR5368 through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL6334ACRZ-TR5368 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 ISL6334ACRZ-TR5368 reliable?
The price and inventory of ISL6334ACRZ-TR5368 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL6334ACRZ-TR5368 is usually 5 days.
3.What payment methods are accepted for ISL6334ACRZ-TR5368?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL6334ACRZ-TR5368 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL6334ACRZ-TR5368?
ISL6334ACRZ-TR5368 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL6334ACRZ-TR5368 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 ISL6334ACRZ-TR5368?
For technical support, including ISL6334ACRZ-TR5368 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL6334ACRZ-TR5368 requirements.
6.How does Aetrix verify that ISL6334ACRZ-TR5368 is sourced from the original manufacturer or authorized distributors?
All ISL6334ACRZ-TR5368 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 ISL6334ACRZ-TR5368 meets industry standards.
7.What is the process for return or replacement of ISL6334ACRZ-TR5368?
All ISL6334ACRZ-TR5368 units undergo pre-shipment inspection (PSI). If there is an issue with ISL6334ACRZ-TR5368, 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 ISL6334ACRZ-TR5368 part is unused and in its original packaging.
Return procedure for ISL6334ACRZ-TR5368:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISL6334ACRZ-TR5368 Tags
-
TPS51206DSQR
Texas Instruments
-
TPS51200DRCR
Texas Instruments
-
TPS51200DRCT
Texas Instruments
-
TPS62740DSSR
Texas Instruments
-
TPS51100DGQR
Texas Instruments
-
NCP51200MNTXG
onsemi
-
NCP51400MNTXG
onsemi
-
RT9026GSP
Richtek USA Inc.
-
LP2998MRX/NOPB
Texas Instruments
-
TPS51200QDRCRQ1
Texas Instruments
-
DPA423GN-TL
Power Integrations
-
LM10011SD/NOPB
Texas Instruments
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
