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Renesas ISL6627IRZ-T
- Part No.:
- ISL6627IRZ-T
- Manufacturer:
- Renesas
- Category:
- Special Purpose Regulators
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
ISL6627IRZ-T.pdf
- Description:
- IC REG CTRLR INTEL 1OUT 10DFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,339
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Product details
Overview
ISL6627IRZ-T from Intersil is a VR11.1/VR12-compatible dual N-channel MOSFET driver for synchronous buck converters, delivering 4A sink current on LGATE, 2A source/sink on UGATE/LGATE, and adaptive shoot-through protection with programmable deadtime. It enables diode emulation during PSI mode for DCM operation in microprocessor core voltage regulators.
For engineers reviewing the ISL6627IRZ-T datasheet, ISL6627IRZ-T pinout, ISL6627IRZ-T application, or ISL6627IRZ-T equivalent, key selection considerations include its -40°C to +85°C operating range, 10-lead 3×3 DFN package with exposed thermal pad, VR11.1/VR12 protocol support, and integrated 20kΩ high-side gate-to-source resistor for dV/dt immunity.
Technical Context
The ISL6627IRZ-T implements an advanced PWM protocol that detects PSI# commands from VR11.1/VR12 controllers to activate diode emulation, enabling discontinuous conduction mode (DCM) by sensing zero inductor current and turning off LGATE. Its adaptive shoot-through protection monitors UGATE–PHASE and LGATE voltages to dynamically adjust dead time between high- and low-side FET switching transitions.
Deadtime is programmable via the TD pin using external resistors (e.g., 100kΩ to GND yields 25ns LGATE-fall-to-UGATE-rise delay), while floating TD enables adaptive mode. The driver integrates a 36V-rated bootstrap Schottky diode and prevents bootstrap capacitor overcharge during PHASE node negative excursions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Supply | 5V ±10% - powers internal logic and gate drivers; requires low-ESR ceramic decoupling to GND. |
| LGATE Sink Current | 4A - enables fast turn-off of large lower-side MOSFETs, critical for preventing shoot-through under high dV/dt. |
| UGATE/LGATE Rise/Fall Times | 4–8ns (3nF load) - supports >1MHz switching frequencies with minimal gate drive loss. |
| Propagation Delays | tPDHL = 16ns (adaptive), tPDLFUR = 17ns (programmed) - ensures precise timing control for stable CCM/DCM transitions. |
| Operating Temp Range | -40°C to +85°C - qualified for industrial and computing applications requiring extended thermal margin. |
| Bootstrap Diode Rating | 36V (<200ns) - withstands transient overshoot during high-frequency PHASE node switching. |
| Integrated Resistor | 20kΩ high-side gate-to-source - suppresses self-turn-on caused by input bus dV/dt without external components. |
Pinout & Package
ISL6627IRZ-T uses a 10-lead 3×3 mm Dual Flat No-lead (DFN) package with exposed thermal pad (EPAD) soldered to GND for enhanced heat dissipation. Pin 1 (UGATE) to Pin 10 (PHASE) follow standard top-view numbering; EPAD is electrically connected to GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| UGATE (Pin 1) | Upper gate drive output | Drives gate of high-side N-MOSFET; referenced to PHASE node, not GND. |
| BOOT (Pin 2) | Floating bootstrap supply | Connects to bootstrap capacitor (BOOT–PHASE); supplies charge for UGATE high-side drive. |
| TD (Pin 3) | Deadtime programming | Resistor to GND/VCC sets fixed propagation delay; open = adaptive mode. |
| PWM (Pin 4) | Control input | Accepts tri-state PWM signal from VR controller; interprets PSI# for diode emulation. |
| GND (Pin 5) | Bias and reference ground | Reference for all signals and power return path; connects to EPAD. |
| LGATE (Pin 6) | Lower gate drive output | Drives gate of low-side N-MOSFET; referenced to GND. |
| VCC (Pin 7) | Bias supply input | 5V supply for logic and gate drivers; requires local ceramic decoupling. |
| NC (Pin 8) | No connection | Not internally bonded; must remain unconnected. |
| EN (Pin 9) | Enable input | Logic-high (>1.4V) enables driver; logic-low disables both outputs. |
| PHASE (Pin 10) | Switching node connection | Connects to source of upper MOSFET and drain of lower MOSFET; return path for UGATE drive. |
Key Features
| Feature | Design Value |
|---|---|
| VR11.1/VR12 Protocol Support | Enables seamless integration with Intersil multiphase controllers for dynamic voltage scaling and PSI-based light-load optimization. |
| Diode Emulation Mode | Activates DCM at light loads by detecting zero inductor current and disabling LGATE, improving efficiency without external circuitry. |
| Programmable Deadtime | Allows fine-tuning of UGATE/LGATE overlap margins via TD pin resistor to maximize efficiency across MOSFET gate charge variations. |
| Integrated Bootstrap Diode | Eliminates need for external Schottky diode; rated for 36V transients and includes overcharge prevention for robust bootstrapping. |
| 20kΩ High-Side Gate Resistor | Prevents Miller-induced self-turn-on during high-dV/dt startup or transient events without sacrificing drive strength or efficiency. |
Applications
| Server CPU Core Regulator | AI Accelerator VRM |
|---|---|
Use Scenario: High-current, multi-phase buck regulator supplying core voltage to x86 or Arm-based server CPUs with dynamic frequency scaling. IC Role / Device Role / Timing Role: Dual gate driver controlling high-side/low-side N-MOSFETs per phase; synchronizes with VR12 controller PWM and PSI commands. Use Value: Adaptive shoot-through protection and diode emulation maintain >90% efficiency from 10% to 100% load, reducing thermal stress on VRM components. | Use Scenario: Compact, high-frequency VRM powering GPU or AI ASIC die with tight voltage tolerance and rapid load transient response. IC Role / Device Role / Timing Role: Fast-propagation gate driver enabling >1MHz switching; supports diode braking to minimize overshoot during 10A/µs load steps. Use Value: 4A LGATE sink current and <8ns rise/fall times ensure clean gate waveforms, suppressing ringing and EMI in dense PCB layouts. |
| Industrial FPGA Power Supply | High-Efficiency Telecom DC/DC Module |
Use Scenario: Programmable logic device power rail requiring -40°C to +85°C operation, low standby current, and reliable startup under variable input conditions. IC Role / Device Role / Timing Role: Synchronous rectified buck driver with POR threshold (3.85V rising) and EN-controlled sequencing for system-level power management. Use Value: Low 1.27mA no-load VCC current and undervoltage lockout prevent erratic behavior during brown-out conditions. | Use Scenario: Isolated or non-isolated telecom brick delivering 12V–1V conversion with emphasis on light-load efficiency and long-term reliability. IC Role / Device Role / Timing Role: High-efficiency gate driver supporting DCM operation via diode emulation and optimized deadtime for wide-input-range designs. Use Value: Bootstrap capacitor overcharge prevention and 36V internal diode rating enable stable operation with 48V input transients common in telecom systems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck gate driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IR35201MTRPBF | Integrated PWM controller + driver; supports Intel VR12.5/VR13; no separate TD pin for deadtime tuning. | Targeted at single-chip VRM solutions; lacks standalone driver flexibility for custom controller designs. | Choose IR35201MTRPBF when consolidating controller and driver functions is preferred over discrete optimization. |
| LM5113SDX/NOPB | High-speed dual driver with 5A sink, but no VR protocol awareness, diode emulation, or adaptive shoot-through; requires external deadtime circuitry. | Suitable for generic high-frequency DC/DC, not optimized for microprocessor VRM timing requirements. | Choose LM5113SDX/NOPB for non-VR applications needing higher peak current and simpler interface, accepting added design complexity. |
Compared with IR35201MTRPBF and LM5113SDX/NOPB, the ISL6627IRZ-T uniquely combines VR11.1/VR12 protocol decoding, adaptive shoot-through, and diode emulation in a compact DFN-enabling high-efficiency, low-component-count core regulators without sacrificing timing precision or light-load performance.
Availability
ISL6627IRZ-T is available at Aetrix Electronics and suitable for server CPU core regulators, AI accelerator VRMs, and industrial FPGA power supplies requiring stable component supply, long lifecycle support, and RoHS-compliant packaging.
Supply support for ISL6627IRZ-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
Intersil Corporation designs high-performance analog, mixed-signal, and power management semiconductors for industrial, computing, and consumer markets.
The ISL6627IRZ-T belongs to Intersil's VRM driver product line, engineered specifically for high-efficiency, high-current synchronous buck regulation in advanced microprocessor and ASIC power delivery systems.
FAQ
What is the purpose of the TD pin on the ISL6627IRZ-T?
The TD pin on the ISL6627IRZ-T programs deadtime behavior: connecting it to GND or VCC via a resistor selects fixed propagation delay (e.g., 17ns LGATE-fall-to-UGATE-rise), while leaving it floating enables adaptive shoot-through protection. This allows designers to optimize efficiency across varying MOSFET gate charge characteristics without redesigning layout or firmware. The ISL6627IRZ-T datasheet specifies resistor values and resulting delays in Table 1.
Does the ISL6627IRZ-T support diode emulation, and how is it activated?
Yes, the ISL6627IRZ-T supports diode emulation to improve light-load efficiency. It activates automatically upon detecting a PSI# signal from a compatible VR11.1 or VR12 controller on the PWM pin. Once enabled, the ISL6627IRZ-T monitors inductor current zero-crossing and turns off LGATE to enforce discontinuous conduction mode (DCM), eliminating reverse current conduction through the low-side MOSFET.
What is the function of the integrated 20kΩ resistor in the ISL6627IRZ-T?
The ISL6627IRZ-T integrates a 20kΩ resistor between UGATE and PHASE to prevent high-side MOSFET self-turn-on caused by Miller coupling during high dV/dt events at startup or transients. This eliminates the need for an external gate-to-source resistor while maintaining full drive strength and efficiency-verified in typical applications where input bus slew rates exceed 10V/ns.
Can the ISL6627IRZ-T be used with non-Intersil VR controllers?
Yes, the ISL6627IRZ-T operates in standard CCM PWM mode with any controller providing a compatible tri-state PWM signal (0V/2.5V/5V levels). However, VR11.1/VR12-specific features-including PSI-triggered diode emulation and diode braking-require Intersil-compatible controllers. For generic buck applications, the ISL6627IRZ-T delivers robust gate drive with adaptive shoot-through protection independent of controller vendor.
What thermal design considerations apply to the ISL6627IRZ-T package?
The ISL6627IRZ-T uses a 10-lead 3×3 mm DFN with exposed thermal pad (EPAD) requiring direct soldering to a GND plane. Intersil recommends ≥4 thermal vias (0.3mm diameter, spaced ≤0.9mm apart) connecting EPAD to inner/outer GND layers to achieve θJC = 10°C/W. This minimizes junction temperature rise during 4A LGATE sink operation and supports continuous use at +85°C ambient.
ISL6627IRZ-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 10-VFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Applications:
- Controller, Intel VR11.1, VR12
- Voltage - Input:
- 4.5V ~ 5.5V
- Number of Outputs:
- 1
- Voltage - Output:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-DFN (3x3)
ISL6627IRZ-T FAQ
1.How can I place an order for ISL6627IRZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL6627IRZ-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 ISL6627IRZ-T reliable?
The price and inventory of ISL6627IRZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL6627IRZ-T is usually 5 days.
3.What payment methods are accepted for ISL6627IRZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL6627IRZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL6627IRZ-T?
ISL6627IRZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL6627IRZ-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 ISL6627IRZ-T?
For technical support, including ISL6627IRZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL6627IRZ-T requirements.
6.How does Aetrix verify that ISL6627IRZ-T is sourced from the original manufacturer or authorized distributors?
All ISL6627IRZ-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 ISL6627IRZ-T meets industry standards.
7.What is the process for return or replacement of ISL6627IRZ-T?
All ISL6627IRZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL6627IRZ-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 ISL6627IRZ-T part is unused and in its original packaging.
Return procedure for ISL6627IRZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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