My Inquiry
My Account
Renesas ISL6388HRTZ-T
- Part No.:
- ISL6388HRTZ-T
- Manufacturer:
- Renesas
- Category:
- Special Purpose Regulators
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
ISL6388HRTZ-T.pdf
- Description:
- IC REG CTRLR INTEL 1OUT 40TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,281
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ISL6388HRTZ-T from Renesas (formerly Intersil) is a 6-phase digital PWM controller compliant with Intel VR12.5/VR12 specifications, designed to regulate microprocessor core or memory voltage rails. It delivers programmable NVM storage for up to 8 configurations, supports SMBus/PMBus/I²C at up to 1.5MHz, implements Advanced Linear EAPP control for linear transient response, and enables auto phase shedding across 1–6 phases.
For engineers reviewing the ISL6388HRTZ-T datasheet, ISL6388HRTZ-T pinout, ISL6388HRTZ-T application, or ISL6388HRTZ-T equivalent, key selection considerations include VR12.5 compliance, NVM-programmable droop and fault settings, PSI#-driven phase shedding modes (PSI1/PSI2), differential remote sensing accuracy (±0.5%), and compatibility with 3.3V/5V DrMOS drivers.
Technical Context
The ISL6388HRTZ-T employs a patented Advanced Linear EAPP digital control architecture-distinct from conventional discrete digital PWM-to achieve linear voltage-loop response and evenly distributed PWM pulses during load transients. It integrates dedicated current sensing via IMON pin and DCR/resistor inputs, with digitally programmable 1% droop resistor for precision load-line control and channel-current balancing.
Thermal monitoring is implemented via TM pin connected to an NTC thermistor, with internal digitization and integrated compensation of current sense elements. The controller supports SVID conflict-free bus operation, enabling simultaneous communication with CPU while programming NVM banks for multiple compensation profiles and system parameters without firmware.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Phase Count | Configurable 1–6 phases; auto-shedding optimizes efficiency from light to full load without sacrificing transient response. |
| Bus Interface | SMBus/PMBus/I²C up to 1.5MHz; SVID conflict-free for concurrent CPU communication and NVM configuration. |
| Output Accuracy | Differential remote sensing with ±0.5% regulation accuracy; eliminates ground potential differences between remote/local grounds. |
| Current Sensing | Supports precision resistor or inductor DCR sensing; enables calibrated load-line (droop) control and per-phase current limiting. |
| NVM Capacity | Stores up to 8 independent configurations including frequency, droop, OCP/UVP/CFP faults, and compensation settings. |
| PSI Modes | PSI1: programmable 1- or 2-phase operation; PSI2/PSI3: single-phase with diode emulation for ultra-low-power efficiency. |
| Package | 40-lead 5mm × 5mm QFN (HRTZ); RoHS-compliant, Pb-free, thermal pad exposed for enhanced power dissipation. |
Pinout & Package
ISL6388HRTZ-T is housed in a 40-lead, 5mm × 5mm QFN package (HRTZ) with exposed thermal pad. Pin functions are defined per Intersil FN8571 Rev 0.00 datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power input supply | Accepts 5V or 3.3V PWM input for DrMOS/driver interface; supports high common-mode sensing up to VCC−1.5V. |
| IMON | Current monitor output | Reports real-time load current to CPU via IOUT register; enables precise telemetry and PSI# coordination. |
| TM | Thermal monitor input | Connects to NTC thermistor; digitized internally for thermal compensation of current sense elements. |
| SMBCLK/SMBDAT | SMBus interface pins | Enable conflict-free bidirectional communication with CPU SVID bus; support NVM programming and telemetry readback. |
| EN | Threshold-sensitive enable | Coordinates startup timing with other voltage rails; ensures accurate sequencing in multi-rail systems. |
| VID[4:0] | Dynamic VID input | Accepts 5-bit fast dynamic VID commands; supports programmable slew rate and DVC compensation. |
Key Features
| Feature | Design Value |
|---|---|
| Advanced Linear EAPP control | Enables linear transient response with evenly spaced PWM pulses-reducing beat-frequency oscillation and improving phase current balance under dynamic loads. |
| Auto phase shedding | Reduces magnetic and switching losses at light load by dynamically scaling active phases (1–6), maintaining high efficiency without compromising heavy-load transient performance. |
| Differential remote voltage sensing | Eliminates ground offset errors between remote and local sense points, ensuring ±0.5% output regulation accuracy across PCB layout variations. |
| Programmable NVM banks | Stores 8 complete configurations-including droop, frequency, OCP thresholds, and compensation-enabling field-updatable profiles without hardware changes. |
| PSI#-driven low-power modes | Enters 1-/2-phase (PSI1) or single-phase diode-emulation (PSI2/PSI3) upon CPU signal, optimizing efficiency during idle and deep-sleep states. |
Applications
| Core Voltage Regulation | Memory Voltage Regulation |
|---|---|
Use Scenario: Regulating core voltage for Intel VR12.5/VR12-compliant CPUs in high-performance servers and workstations. IC Role / Device Role / Timing Role: Primary 6-phase PWM controller managing VID-based dynamic voltage scaling and phase shedding via SVID. Use Value: Enables precise load-line control, fast transient response, and NVM-stored overclocking profiles for stable high-frequency operation. | Use Scenario: Supplying DDR3/DDR4 memory rail with tight regulation and low-noise performance in enterprise-class systems. IC Role / Device Role / Timing Role: Dual-role controller supporting both core and memory VR applications with independent configuration storage. Use Value: Differential remote sensing ensures ±0.5% accuracy despite PCB trace impedance; auto-shedding maintains >90% efficiency at 10% load. |
| Graphics Power Delivery | Overclocking Platform Rail |
Use Scenario: Delivering clean, highly responsive power to GPU core in high-end desktop and workstation graphics cards. IC Role / Device Role / Timing Role: High-bandwidth 6-phase controller interfacing with DrMOS drivers and supporting variable-frequency transient control. Use Value: Advanced Linear EAPP eliminates non-linear response artifacts during rapid GPU load shifts, reducing required bulk capacitance by ~30%. | Use Scenario: Enabling user-adjustable voltage/frequency profiles on enthusiast motherboards with BIOS-level tuning. IC Role / Device Role / Timing Role: NVM-programmable controller storing up to 8 overclocking configurations accessible via PMBus. Use Value: Eliminates need for external EEPROM or firmware updates; allows real-time switching between stable and aggressive profiles via software. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multi-phase digital PWM controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IR35201MTRPBF | 6-phase VR12.5 controller with integrated MOSFET drivers; lacks NVM storage and EAPP linear control scheme. | Targets cost-sensitive server boards where driver integration reduces BOM count but limits fine-grained transient tuning. | Choose IR35201MTRPBF when driver integration is prioritized over programmable compensation and NVM flexibility. |
| TPS53679RSLR | Texas Instruments 6-phase controller with D-CAP3 control; supports PMBus but no SVID conflict-free mode or PSI#-based phase shedding. | Used in AMD and generic x86 platforms requiring high-efficiency light-load operation without Intel-specific SVID coordination. | Choose TPS53679RSLR for non-Intel platforms or when D-CAP3's adaptive response suffices without VR12.5 telemetry requirements. |
Compared with IR35201MTRPBF and TPS53679RSLR, the ISL6388HRTZ-T uniquely combines SVID conflict-free bus operation, NVM-stored multi-profile support, and Advanced Linear EAPP for linear transient behavior-making it optimal for Intel VR12.5 systems requiring both precision regulation and field-reconfigurable overclocking capability.
Availability
ISL6388HRTZ-T is available at Aetrix Electronics and suitable for high-performance server core rails, graphics power delivery, and overclocking platform voltage regulation requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ISL6388HRTZ-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 continues to manufacture, test, and support its high-performance analog and power management IC portfolio under ISO9001 quality systems.
The ISL6388HRTZ-T belongs to Renesas' Digital Power Management product line, engineered specifically for Intel VR12/VR12.5-compliant CPU and memory voltage regulation with emphasis on programmability, telemetry, and green efficiency across load ranges.
FAQ
What is the primary function of the ISL6388HRTZ-T in a CPU voltage regulation system?
The ISL6388HRTZ-T serves as a 6-phase digital PWM controller that regulates core or memory voltage for Intel VR12.5/VR12-compliant processors. It manages dynamic VID commands, implements auto phase shedding via PSI# signals, provides precise current telemetry through the IMON pin, and stores up to 8 NVM configurations for flexible system tuning-all while maintaining ±0.5% regulation accuracy via differential remote sensing.
Does the ISL6388HRTZ-T support both resistor-based and DCR-based current sensing?
Yes, the ISL6388HRTZ-T supports both precision shunt resistor and inductor DCR current sensing methods. Its current sensing circuitry includes calibration capability and feeds data to the IMON pin and IOUT register for real-time CPU telemetry. This dual-sensing flexibility allows designers to optimize for accuracy, cost, or board space depending on the target application's requirements.
How does the Advanced Linear EAPP control scheme improve transient response compared to standard digital PWM controllers?
The ISL6388HRTZ-T's Advanced Linear EAPP control uses digitally programmable compensation and evenly distributed PWM pulses to deliver linear voltage-loop behavior-avoiding beat-frequency oscillation and non-linear artifacts common in discrete digital approaches. This results in faster, more predictable transient recovery with fewer output capacitors, directly improving stability during rapid CPU load changes.
Can the ISL6388HRTZ-T be used in non-Intel platforms such as AMD or ARM-based systems?
The ISL6388HRTZ-T is explicitly designed for Intel VR12/VR12.5 compliance and relies on SVID signaling for PSI# coordination and VID updates. While its SMBus/PMBus interface allows basic telemetry and configuration in non-Intel systems, full functionality-including auto phase shedding, dynamic VID, and NVM profile loading-is optimized for Intel platforms and may not operate as intended without SVID-compatible host control.
What package type and thermal characteristics does the ISL6388HRTZ-T use?
The ISL6388HRTZ-T uses a 40-lead 5mm × 5mm QFN package (HRTZ) with exposed thermal pad for efficient heat dissipation. It is RoHS-compliant and Pb-free. Thermal monitoring is implemented via the TM pin connected to an NTC thermistor, with internal digitization and integrated compensation of current sense elements to maintain accuracy across temperature variations.
ISL6388HRTZ-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 40-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Applications:
- Controller, Intel VR12, VR12.5
- Voltage - Input:
- 4.5V ~ 14V
- Number of Outputs:
- 1
- Voltage - Output:
- 0.25V ~ 3.04V
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 40-TQFN (5x5)
ISL6388HRTZ-T FAQ
1.How can I place an order for ISL6388HRTZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL6388HRTZ-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 ISL6388HRTZ-T reliable?
The price and inventory of ISL6388HRTZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL6388HRTZ-T is usually 5 days.
3.What payment methods are accepted for ISL6388HRTZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL6388HRTZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL6388HRTZ-T?
ISL6388HRTZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL6388HRTZ-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 ISL6388HRTZ-T?
For technical support, including ISL6388HRTZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL6388HRTZ-T requirements.
6.How does Aetrix verify that ISL6388HRTZ-T is sourced from the original manufacturer or authorized distributors?
All ISL6388HRTZ-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 ISL6388HRTZ-T meets industry standards.
7.What is the process for return or replacement of ISL6388HRTZ-T?
All ISL6388HRTZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL6388HRTZ-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 ISL6388HRTZ-T part is unused and in its original packaging.
Return procedure for ISL6388HRTZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISL6388HRTZ-T 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…
