My Inquiry
My Account
Renesas ISL6376CRZ
- Part No.:
- ISL6376CRZ
- Manufacturer:
- Renesas
- Category:
- Special Purpose Regulators
- Package:
- 48-VFQFN Exposed Pad
- Datasheet:
-
ISL6376CRZ.pdf
- Description:
- IC REG CTRLR INTEL 1OUT 48QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,857
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ISL6376CRZ from Renesas (formerly Intersil) is a hybrid digital 6-phase PWM controller designed for Intel VR12.5/VR12-compliant microprocessor core and memory voltage regulation. It delivers ±0.5% closed-loop system accuracy, supports up to 2MHz per phase switching, implements EAPP modulation, and enables auto phase shedding with PSI#-driven 1–2-phase operation in low-power modes.
For engineers reviewing the ISL6376CRZ datasheet, ISL6376CRZ pinout, ISL6376CRZ application, or ISL6376CRZ equivalent, key selection criteria include VR12.5/VR12 compliance, SVID/SMBus/PMBus interface conflict-free operation, droop control via DCR/resistor sensing, thermal compensation via TM pin, and EAPP-based transient response optimization without NVM or firmware.
Technical Context
The ISL6376CRZ implements Intersil's patented Enhanced Active Pulse Positioning (EAPP) modulation to achieve fast load transient response with reduced output capacitance. It supports 1–6-phase operation with phase-doubler compatibility and uses differential remote sensing to eliminate ground potential differences between local and remote feedback points.
Current sensing is performed via dedicated resistor or inductor DCR, feeding FB for precision droop programming and enabling channel-current balancing, average overcurrent protection, and individual phase current limiting. The TM pin interfaces with an NTC thermistor for digitized thermal monitoring and integrated current-sense compensation across temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Phase Count | Configurable 1–6-phase operation with phase-doubler support for scalable power delivery. |
| Output Accuracy | ±0.5% closed-loop system accuracy over load, line, and temperature - ensures tight VOUT regulation for CPU core/memory rails. |
| Switching Frequency | Up to 2MHz per phase - enables compact magnetics and high-density VR design. |
| Interface Protocol | SMBus/PMBus/I²C with SVID bus conflict-free operation - allows coexistence with CPU's serial VID bus without arbitration issues. |
| Current Sensing | Differential DCR or precision resistor sensing with integrated programmable current sense resistors - supports accurate load-line (droop) programming and channel balancing. |
| Thermal Monitoring | TM pin accepts NTC thermistor input with internal digitization and compensation - enables real-time thermal-aware current sensing and protection. |
| Protection Features | True Catastrophic Failure Protection (CFP), average OCP, per-phase current limit, IMON-pin OCP, and open-sense detection - provides layered fault coverage for high-reliability VRMs. |
Pinout & Package
ISL6376CRZ is housed in a 48-pin QFN package (7mm × 7mm, 0.5mm pitch) with exposed thermal pad. Pin functions are defined per the official ISL6376 datasheet Rev 0.00 (May 2013), with critical terminals including FB, IMON, TM, SDA/SCL, VID[4:0], PSI#, EN, BOOT, and PHASEx outputs.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FB | Feedback Input | Accepts differential remote sense signal; develops precision droop voltage drop across external resistor for load-line control. |
| IMON | Current Monitor Output | Reports sensed load current to CPU via IOUT register; enables dynamic phase shedding and PSI# coordination. |
| TM | Thermal Monitor Input | Connects to NTC thermistor; digitized internally for thermal compensation of current sense and thermal shutdown thresholds. |
| SDA/SCL | SMBus/PMBus Interface | Two-wire bidirectional interface supporting VR12.5 SerialVID commands and telemetry readback without SVID bus conflict. |
| PSI# | Power State Indicator Input | Active-low signal from CPU indicating PSI1/PSI2/PSI3 low-power states; triggers automatic phase reduction and diode emulation. |
| EN | Enable Input | Threshold-sensitive enable pin for precise power-rail sequencing coordination with other VRMs. |
Key Features
| Feature | Design Value |
|---|---|
| EAPP Modulation | Proprietary pulse positioning scheme enabling faster transient response with fewer output capacitors and no NVM/firmware dependency. |
| Auto Phase Shedding | Dynamically scales active phases from 1 to 6 based on load and PSI# state - maximizes light-load efficiency while preserving heavy-load transient performance. |
| Droop Control | Programmable load-line using DCR or resistor sensing at FB pin - ensures stable CPU VOUT vs. current profile per VR12.5 spec. |
| Diode Emulation | Enabled in PSI2/PSI3 modes to replace synchronous rectifier switching with controlled conduction - reduces switching losses at ultra-light loads. |
| True CFP | Hardware-level catastrophic failure detection independent of software or communication bus - guarantees immediate shutdown on severe faults. |
Applications
| Server CPU Core VRM | Workstation Memory Regulator |
|---|---|
Use Scenario: High-performance dual-socket server motherboard regulating Intel Xeon E5/E7 core voltage under dynamic workloads. IC Role / Device Role / Timing Role: Primary 6-phase PWM controller implementing VR12.5 SerialVID, EAPP modulation, and PSI#-driven phase shedding. Use Value: Delivers ±0.5% output accuracy and sub-100ns transient response while reducing output capacitor count by 30% versus conventional controllers. | Use Scenario: DDR4 memory subsystem on high-end workstation platform requiring tightly regulated VDDQ with thermal-aware current sensing. IC Role / Device Role / Timing Role: VR12/VR12.5-compliant memory regulator with DCR-based current sensing and TM-pin thermal compensation. Use Value: Enables accurate load-line programming and channel-current balancing across 4-phase memory VRM, improving signal integrity and thermal margin. |
| Overclocking-Enabled Desktop Platform | Industrial Embedded CPU Power |
Use Scenario: Enthusiast desktop motherboard supporting dynamic VID tuning, overclocking profiles, and real-time telemetry via PMBus. IC Role / Device Role / Timing Role: Hybrid digital controller providing SMBus/PMBus access to IMAX, TMAX, BOOT, and ADDRESS OFFSET registers for user-configurable limits. Use Value: Allows BIOS-level overclocking control and runtime current/voltage/temperature monitoring without firmware updates or NVM reprogramming. | Use Scenario: Fanless industrial PC with extended temperature range (-40°C to +85°C) powering Intel Atom or Core i-series processors. IC Role / Device Role / Timing Role: Robust 6-phase controller with thermal compensation, start-up into pre-charged load, and Pb-free RoHS-compliant packaging. Use Value: Ensures reliable cold-start behavior and stable regulation across wide ambient temperatures using integrated NTC compensation and true CFP. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multi-phase PWM controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IR3567BMTRPBF | 6-phase VR12.5 controller with integrated MOSFET drivers; requires external NVM for configuration; lacks EAPP modulation. | Designed for space-constrained designs where driver integration reduces BOM count; higher gate drive capability but slower transient response. | Choose IR3567BMTRPBF when driver integration and layout simplification outweigh need for EAPP-enhanced transients. |
| TPS53679RSLR | Texas Instruments 6-phase controller with D-CAP+ mode; supports VR12/VR12.5; no SVID conflict-free interface; uses proprietary PMBus command set. | Optimized for TI ecosystem designs with CSD87350Q5D DrMOS; lacks TM-pin thermal compensation and true CFP hardware protection. | Choose TPS53679RSLR when leveraging TI's DrMOS reference designs and PMBus toolchain is preferred over SVID/SMBus interoperability. |
Compared with IR3567BMTRPBF and TPS53679RSLR, the ISL6376CRZ uniquely combines EAPP modulation, SVID-bus conflict-free SMBus/PMBus, integrated thermal compensation via TM pin, and true hardware CFP - making it optimal for high-transient, thermally adaptive, and Intel-spec-compliant VRMs where firmware-free operation is critical.
Availability
ISL6376CRZ is available at Aetrix Electronics and suitable for server CPU core VRMs, workstation memory regulators, overclocking-enabled desktop platforms, and industrial embedded CPU power systems requiring stable component supply and long-term lifecycle support.
Supply support for ISL6376CRZ 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) is a global semiconductor leader delivering trusted analog, power, and embedded processing solutions with ISO 9001-certified manufacturing.
The ISL6376CRZ belongs to Renesas' high-performance digital power management product line, engineered specifically for Intel VR12.5/VR12-compliant CPU and memory voltage regulation in servers, workstations, and high-end desktops.
FAQ
What is the primary compliance standard supported by the ISL6376CRZ?
The ISL6376CRZ is fully compliant with Intel VR12.5 and VR12 specifications, including SerialVID protocol, PSI# signaling, and load-line (droop) requirements. It supports both core and memory VR applications under these standards, with programmable registers for IMAX, TMAX, BOOT, and ADDRESS OFFSET to meet VR12.5 configuration mandates. This compliance ensures interoperability with Intel CPUs and validated platform designs.
Does the ISL6376CRZ require external NVM or firmware for configuration?
No, the ISL6376CRZ operates as a hybrid digital controller without external NVM or firmware. Its configuration is handled dynamically via SMBus/PMBus/I²C commands during runtime, and its EAPP modulation eliminates the need for stored calibration tables. This architecture reduces BOM cost, simplifies qualification, and avoids firmware update dependencies - a key differentiator from full-digital VR controllers.
How does the ISL6376CRZ implement thermal compensation for current sensing?
The ISL6376CRZ uses the TM pin to interface with an external NTC thermistor. The internal circuit digitizes the thermistor voltage and applies real-time compensation to the current sense amplifier and droop programming blocks. This ensures consistent current measurement accuracy and stable load-line behavior across -40°C to +85°C ambient, directly supporting Intel VR12.5 thermal-aware regulation requirements.
What protection features are implemented in hardware on the ISL6376CRZ?
The ISL6376CRZ integrates multiple hardware-level protections: True Catastrophic Failure Protection (CFP) for immediate shutdown on hard shorts, average overcurrent protection, per-phase current limiting using internal comparators, precision overcurrent detection on the IMON pin, and output voltage open-sense detection. These operate independently of software or communication buses, ensuring fail-safe operation even during SMBus lockup or firmware absence.
Can the ISL6376CRZ be used in single-phase configurations?
Yes, the ISL6376CRZ supports configurable 1–6-phase operation. In low-power states (PSI1, PSI2, PSI3), it automatically reduces active phases to 1 or 2, optionally enabling diode emulation for enhanced light-load efficiency. It also supports startup into pre-charged loads and differential remote sensing - making it viable for lower-power applications such as embedded CPU cores or auxiliary rails where full 6-phase capability is not required.
ISL6376CRZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 48-VFQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Obsolete
- Applications:
- Controller, Intel VR12, VR12.5
- Voltage - Input:
- 4.75V ~ 5.25V
- Number of Outputs:
- 1
- Voltage - Output:
- 0.25V ~ 3.04V
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 48-QFN (6x6)
ISL6376CRZ FAQ
1.How can I place an order for ISL6376CRZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL6376CRZ 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 ISL6376CRZ reliable?
The price and inventory of ISL6376CRZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL6376CRZ is usually 5 days.
3.What payment methods are accepted for ISL6376CRZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL6376CRZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL6376CRZ?
ISL6376CRZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL6376CRZ 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 ISL6376CRZ?
For technical support, including ISL6376CRZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL6376CRZ requirements.
6.How does Aetrix verify that ISL6376CRZ is sourced from the original manufacturer or authorized distributors?
All ISL6376CRZ 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 ISL6376CRZ meets industry standards.
7.What is the process for return or replacement of ISL6376CRZ?
All ISL6376CRZ units undergo pre-shipment inspection (PSI). If there is an issue with ISL6376CRZ, 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 ISL6376CRZ part is unused and in its original packaging.
Return procedure for ISL6376CRZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISL6376CRZ 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…
