My Inquiry
My Account
Renesas ISL62881CHRTZ
- Part No.:
- ISL62881CHRTZ
- Manufacturer:
- Renesas
- Category:
- Special Purpose Regulators
- Package:
- 28-WFQFN Exposed Pad
- Datasheet:
-
ISL62881CHRTZ.pdf
- Description:
- IC REG CTRL IMVP-6.5 1OUT 28TQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,815
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ISL62881CHRTZ from Renesas (formerly Intersil) is a single-phase PWM voltage regulator IC designed specifically for IMVP-6.5™-compliant mobile CPU and GPU core power delivery. It integrates high- and low-side gate drivers, supports DCR/resistor current sensing, delivers ±0.5% system accuracy over temperature, operates from -10°C to +100°C ambient, and uses R3™ modulator technology for fast transient response in notebook VR applications.
For engineers reviewing the ISL62881CHRTZ datasheet, ISL62881CHRTZ pinout, ISL62881CHRTZ application, or ISL62881CHRTZ equivalent, this page provides verified technical context, validated pin functions, confirmed IMVP-6.5 compliance, differential remote sensing capability, and real-world thermal throttling and diode emulation behavior per FN7596 Rev 0.00.
Technical Context
The ISL62881CHRTZ implements Intel IMVP-6.5™ protocol with a patented Robust Ripple Regulator (R3™) modulator that combines fixed-frequency PWM stability with hysteretic-like transient speed. It dynamically adjusts switching frequency during load transients-increasing under load insertion and stretching during light-load DCM-to improve efficiency and regulation bandwidth.
It supports dual current-sensing methods (inductor DCR or discrete resistor), enables differential remote voltage sensing via VSEN/RTN pins, provides adaptive body diode conduction time reduction in diode emulation mode, and reports output current via the IMON analog current output-all while maintaining 0.5% system accuracy across -10°C to +100°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Regulation Standard | Fully compliant with Intel IMVP-6.5™ specification for mobile CPU/GPU core voltage control. |
| System Accuracy | ±0.5% over temperature (0.75V–1.50V VID range), enabling precise die-level voltage control for modern processors. |
| Operating Temp Range | -10°C to +100°C ambient; junction rated to +125°C-validated for notebook thermal envelopes. |
| Switching Frequency | Adjustable 200–500 kHz (typ. 300 kHz at VW=8 kΩ); dynamically scaled during transients for optimized loop response. |
| Current Sensing | Supports lossless inductor DCR sensing or precision resistor-based sensing-configurable via RBIAS resistor value. |
| Output Voltage Range | 0.300 V to 1.500 V (7-bit VID interface), with boot voltage fixed at 1.100 V ±5.5 mV. |
| Gate Drive Capability | UGATE: 2.0 A source/sink; LGATE: 4.0 A sink / 2.0 A source-sufficient to drive typical 3–6 mΩ MOSFETs in single-phase VR designs. |
Pinout & Package
ISL62881CHRTZ is housed in a 28-lead, 4 mm × 4 mm, 0.5 mm pitch TQFN package (Pb-free, RoHS-compliant, pkg drawing L28.4x4) with exposed thermal pad electrically connected to GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VID0–VID6 | 7-bit digital voltage identification input | Set target output voltage per IMVP-6.5 VID table; VID0 = LSB, VID6 = MSB. |
| VR_ON | Enable input | Active-high logic signal (VIH ≥ 0.7 V) initiates soft-start and regulator operation. |
| DPRSLPVR | Deeper sleep mode indicator | High logic triggers diode emulation mode and adaptive body diode timing reduction. |
| VSEN / RTN | Differential remote sense inputs | Connect directly to processor die for accurate closed-loop regulation-rejects PCB IR drop. |
| ISUM+ / ISUM− | Current-sense amplifier inputs | Accept voltage from DCR network or sense resistor; enable droop-based load-line implementation. |
| UGATE / LGATE | High- and low-side MOSFET gate drivers | Drive external N-channel MOSFETs; UGATE supports 2.0 A source/sink; LGATE supports 4.0 A sink. |
| PHASE / BOOT / VSSP | Power stage node connections | PHASE ties to HS-FET source/LS-FET drain/inductor node; BOOT powers HS driver; VSSP is LS driver return. |
| IMON | Analog current monitor output | Sinks current proportional to output current (e.g., 120 µA at 20 µA ISUM−), used for telemetry or protection. |
Key Features
| Feature | Design Value |
|---|---|
| R3™ Modulator Architecture | Delivers faster transient settling than fixed-frequency PWM and lower phase jitter than hysteretic controllers-enabling stable 300 kHz operation with dynamic frequency scaling. |
| Adaptive Body Diode Conduction Time Reduction | Monitors PHASE node voltage to turn off LGATE precisely at zero-current crossing-minimizing reverse conduction loss in diode emulation mode. |
| User-Selectable Overshoot Reduction | Configurable via external component to suppress output voltage overshoot during load steps-critical for protecting sensitive CPU/GPU cores. |
| Differential Remote Voltage Sensing | VSEN/RTN pair enables direct die-voltage feedback, eliminating PCB trace resistance error and ensuring ±0.5% regulation accuracy at the load. |
| Thermal Compensation Ready | Supports NTC thermistor connection (via optional ISL62881D variant) for DCR temperature drift correction-though ISL62881CHRTZ relies on fixed compensation. |
Applications
| Notebook CPU Core VR | Notebook GPU Core VR |
|---|---|
Use Scenario: Power delivery to Intel Core i-series or AMD Ryzen mobile CPUs requiring IMVP-6.5 compliance, dynamic VID updates, and tight load-line regulation. IC Role / Device Role / Timing Role: Primary single-phase PWM controller managing gate drive, current sensing, VID decoding, and PGOOD signaling for CPU VCORE rail. Use Value: Enables ±0.5% voltage accuracy at die, fast transient response via R3™ modulation, and seamless integration with CPU DPRSLPVR sleep signaling. | Use Scenario: Core voltage regulation for NVIDIA GeForce MX or AMD Radeon Vega mobile GPUs operating under dynamic graphics workloads. IC Role / Device Role / Timing Role: Single-phase VR controller configured for GPU-specific soft-start ramp rate (5 mV/µs) and VID mapping, supporting differential sensing and IMON telemetry. Use Value: Delivers stable sub-1V operation (down to 0.3 V), supports GPU thermal management via DPRSLPVR-triggered diode emulation, and maintains accuracy across wide temperature range. |
| Thin-and-Light Notebook VR | Ultrabook Platform Power |
Use Scenario: Space-constrained VR design in 13–14" ultraportables where 4×4 mm TQFN footprint and integrated gate drivers reduce BOM count. IC Role / Device Role / Timing Role: Compact, self-contained VR solution eliminating need for external gate drivers or complex compensation networks. Use Value: Reduces total solution size by integrating dual gate drivers, error amp, modulator, and protection logic-while maintaining IMVP-6.5 timing compliance. | Use Scenario: High-efficiency platform power architecture requiring light-load optimization via diode emulation and period stretching. IC Role / Device Role / Timing Role: Regulator operating in discontinuous conduction mode (DCM) during idle states, using adaptive deadtime and body diode control to minimize quiescent loss. Use Value: Achieves >85% efficiency at 1 A load via R3™-driven frequency scaling and LGATE timing optimization-extending battery runtime. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar single-phase IMVP-6.5 voltage regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL62881CIRTZ | Same functionality and pinout; extended industrial temp range (-40°C to +100°C ambient) vs. ISL62881CHRTZ (-10°C to +100°C). | Required for designs operating below -10°C ambient (e.g., automotive infotainment, ruggedized notebooks). | Select ISL62881CIRTZ only if full -40°C startup and operation is mandated; otherwise ISL62881CHRTZ suffices for standard consumer notebooks. |
| ISL62881DHRTZ | 32-pin 5×5 TQFN; adds VR_TT# thermal throttling output and NTC input for DCR temperature compensation-no split LGATE in CHRTZ variant. | Needed when platform-level thermal throttling coordination or precision DCR drift correction is required beyond ISL62881CHRTZ's fixed compensation. | Choose ISL62881DHRTZ only if VR_TT# signaling or NTC-based thermal compensation is explicitly required; ISL62881CHRTZ lacks these features and is not pin-compatible. |
Compared with ISL62881CIRTZ, ISL62881CHRTZ trades extended cold-temperature operation for cost and supply-chain alignment in mainstream notebook designs; compared with ISL62881DHRTZ, it omits thermal throttling and NTC interfaces-making it simpler and more compact for non-thermal-critical VR implementations.
Availability
ISL62881CHRTZ is available at Aetrix Electronics and suitable for notebook CPU core VR, GPU core VR, and ultrabook platform power applications requiring stable component supply, IMVP-6.5 compliance, and long-term industrial availability.
Supply support for ISL62881CHRTZ 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 support its high-performance analog and power management portfolio for computing and industrial markets.
The ISL62881CHRTZ belongs to Renesas' IMVP-6.5 VR controller product line, engineered specifically for space- and efficiency-constrained mobile CPU/GPU core power delivery in thin-and-light notebooks and ultrabooks.
FAQ
What is the maximum junction temperature rating for the ISL62881CHRTZ?
The ISL62881CHRTZ has a maximum junction temperature of +125°C, validated for operation across -10°C to +100°C ambient temperature. Its thermal resistance θJA is 42°C/W (28-lead TQFN), and θJC is 5°C/W-enabling reliable performance in thermally dense notebook VR layouts when the exposed pad is properly soldered to a thermal plane.
Does the ISL62881CHRTZ support both DCR and resistor-based current sensing?
Yes, the ISL62881CHRTZ supports both methods. DCR sensing uses the ISUM+/ISUM− inputs with an RC network across the inductor; resistor sensing places a precision shunt in series with the inductor and connects it to the same pins. Configuration is set by the RBIAS resistor value: 147 kΩ for CPU mode (DCR default), 47 kΩ for GPU mode (resistor default), per FN7596 Section "RBIAS".
How does the ISL62881CHRTZ implement diode emulation mode?
The ISL62881CHRTZ enters diode emulation mode upon assertion of DPRSLPVR high. It monitors the PHASE node voltage during LGATE conduction and turns off LGATE precisely when voltage reaches zero-preventing reverse inductor current and body diode conduction loss. This extends light-load efficiency without requiring external Schottky diodes.
What is the purpose of the CLK_EN# pin on the ISL62881CHRTZ?
The CLK_EN# pin is an open-drain output that goes low 13 switching cycles after VCORE reaches within 10% of VBOOT (1.100 V). It signals the system PLL clock controller that regulated core voltage is stable and ready-enabling synchronized clock domain activation in Intel mobile platforms per IMVP-6.5 timing requirements.
Can the ISL62881CHRTZ be used in GPU VR applications, and how is it configured?
Yes, the ISL62881CHRTZ supports GPU VR applications. Configuration is achieved by setting RBIAS = 47 kΩ (vs. 147 kΩ for CPU), which selects GPU-specific soft-start ramp rate (5 mV/µs), VID mapping, and current-sense gain. The device retains all core functions-including differential sensing, IMON, and DPRSLPVR-triggered diode emulation-making it fully adaptable to GPU power profiles.
ISL62881CHRTZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 28-WFQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Obsolete
- Applications:
- Controller, Intel IMVP-6.5™
- Voltage - Input:
- 4.5V ~ 25V
- Number of Outputs:
- 1
- Voltage - Output:
- 0.013V ~ 1.5V
- Operating Temperature:
- -10°C ~ 100°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-TQFN (4x4)
ISL62881CHRTZ FAQ
1.How can I place an order for ISL62881CHRTZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL62881CHRTZ 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 ISL62881CHRTZ reliable?
The price and inventory of ISL62881CHRTZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL62881CHRTZ is usually 5 days.
3.What payment methods are accepted for ISL62881CHRTZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL62881CHRTZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL62881CHRTZ?
ISL62881CHRTZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL62881CHRTZ 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 ISL62881CHRTZ?
For technical support, including ISL62881CHRTZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL62881CHRTZ requirements.
6.How does Aetrix verify that ISL62881CHRTZ is sourced from the original manufacturer or authorized distributors?
All ISL62881CHRTZ 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 ISL62881CHRTZ meets industry standards.
7.What is the process for return or replacement of ISL62881CHRTZ?
All ISL62881CHRTZ units undergo pre-shipment inspection (PSI). If there is an issue with ISL62881CHRTZ, 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 ISL62881CHRTZ part is unused and in its original packaging.
Return procedure for ISL62881CHRTZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ISL62881CHRTZ 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…
