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Renesas ISL6208CRZ-T
- Part No.:
- ISL6208CRZ-T
- Manufacturer:
- Renesas
- Category:
- Gate Drivers
- Package:
- 8-VQFN Exposed Pad
- Datasheet:
-
ISL6208CRZ-T.pdf
- Description:
- IC GATE DRVR HALF-BRIDGE 8QFN
- Quantity:
- Payment:
- Shipping:
Inventory:5,658
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Product details
Overview
ISL6208CRZ-T from Intersil is a high-frequency dual N-channel MOSFET driver optimized for synchronous-rectified buck converters in mobile computing power supplies. It delivers 4A typical sink current on the lower gate, supports up to 2MHz switching, integrates adaptive shoot-through protection and diode emulation, and operates with 5V ±10% VCC supply - enabling efficient core-voltage regulation for Intel® and AMD® mobile microprocessors.
For engineers reviewing the ISL6208CRZ-T datasheet, ISL6208CRZ-T pinout, ISL6208CRZ-T application, or ISL6208CRZ-T equivalent, key selection criteria include its 0.5Ω lower gate sink resistance, 8ns propagation delays, internal bootstrap Schottky diode, three-state PWM input for CPU shutdown control, and QFN-8 (3×3 mm) package thermal performance (θJA = 80°C/W).
Technical Context
The ISL6208CRZ-T implements adaptive shoot-through protection by monitoring LGATE and UGATE voltages-enabling UGATE turn-on only after LGATE falls below 1V, and LGATE turn-on only after UGATE–PHASE drops below 1V. Its three-state PWM input detects voltage windows (0.7–1.3V rising, 3.5–4.1V falling) to initiate controlled shutdown during CPU sleep states.
Diode emulation is activated via the FCCM pin: when low, it enables zero-current detection to force discontinuous conduction mode (DCM), improving light-load efficiency and supporting monotonic pre-biased start-up. The integrated bootstrap Schottky diode eliminates external components while maintaining gate drive integrity across the PHASE node's high dv/dt transitions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Supply | 5V ±10% - matches standard bias rail in mobile VRMs; ensures compatibility with Intersil multiphase PWM controllers. |
| Lower Gate Sink Resistance | 0.5Ω typ - enables robust 4A sink capability to absorb Miller charge injection and prevent shoot-through during high dv/dt phase transitions. |
| Propagation Delay (LGATE) | 25ns typ turn-off, 20ns typ turn-on - ensures precise timing alignment with controller PWM edges for stable multi-phase operation. |
| Switching Frequency Support | Up to 2MHz - allows compact magnetics and high transient response in space-constrained mobile platforms. |
| Bootstrap Diode VF | 0.55V typ at 2mA - minimizes forward drop to sustain gate drive voltage under high-duty-cycle conditions. |
| Three-State Hold-off Time | 175ns typ - guarantees fast, deterministic entry/exit from shutdown state without output glitches during CPU state transitions. |
| Diode Emulation Enable | FCCM pin logic-low - activates zero-current crossing detection to disable LGATE, eliminating reverse conduction loss at light loads. |
Pinout & Package
ISL6208CRZ-T uses an 8-lead 3×3 mm QFN package (JEDEC MO-220 L8.3x3) with exposed thermal pad. Pin 1 is marked in the top-left corner of the package; the thermal pad must be soldered to PCB ground for optimal thermal performance (θJC = 15°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| UGATE | Upper gate drive output | Drives high-side N-MOSFET gate; referenced to PHASE node; requires bootstrap capacitor for high-side floating supply. |
| BOOT | Floating bootstrap supply | Connects to bootstrap capacitor (BOOT–PHASE); internal Schottky diode charges capacitor during low-side conduction. |
| PWM | Three-state control input | Accepts controller PWM signal; interprets mid-range voltage window as shutdown command to force both gates low. |
| GND | Power and signal reference | Common return for VCC, LGATE, and internal circuitry; must be low-inductance connection to minimize noise coupling. |
| LGATE | Lower gate drive output | Drives low-side N-MOSFET gate; referenced to GND; sized for 4A sink to handle large Miller current during phase-node transitions. |
| VCC | Bias supply input | 5V ±10% input; powers internal logic and gate drivers; requires local 1µF ceramic bypass capacitor to GND. |
| FCCM | Diode emulation control | Logic-low enables DCM operation via zero-current detection; logic-high forces continuous conduction mode. |
| PHASE | Switching node return | Connects to source of upper MOSFET and drain of lower MOSFET; serves as return path for upper gate driver and bootstrap capacitor. |
Key Features
| Feature | Design Value |
|---|---|
| Adaptive shoot-through protection | Monitors real-time LGATE and UGATE–PHASE voltages to enforce dead-time, preventing simultaneous conduction without fixed delay circuits. |
| Internal bootstrap Schottky diode | Eliminates external diode, reduces BOM count and layout area, and maintains reliable gate drive under high-frequency, high-dv/dt conditions. |
| Three-state PWM input | Enables seamless CPU shutdown by pulling both gates low without requiring external logic or controller reconfiguration. |
| Diode emulation with pre-biased start-up | Supports monotonic output voltage ramp during cold start into pre-charged rails, avoiding negative transients in point-of-load systems. |
| Low quiescent current | 80µA at 5V - minimizes standby power loss in always-on system rails and extends battery life in mobile platforms. |
Applications
| Intel® Mobile Core-Voltage Regulation | AMD® Mobile Processor VRM |
|---|---|
Use Scenario: Power delivery for 3rd–6th generation Intel Core i-series processors in ultrabooks and 2-in-1 devices. IC Role / Device Role / Timing Role: Dual gate driver coordinating high-side/low-side N-MOSFETs in multiphase buck stages controlled by Intersil ISL63xx PWM controllers. Use Value: 4A lower gate sink current prevents shoot-through during 30V/ns phase-node transitions, ensuring >92% efficiency at 25A load. |
Use Scenario: Core power supply for AMD Ryzen Mobile APUs in thin-and-light notebooks. IC Role / Device Role / Timing Role: Synchronous rectification driver in 4-phase VRM architecture, interfacing with AMD-specific VID signaling and dynamic frequency scaling. Use Value: Diode emulation (FCCM-enabled) improves light-load efficiency by 8–12% versus forced CCM, extending active battery runtime. |
| High-Frequency Low-Profile DC/DC Converter | High-Input-Voltage Buck Regulator |
Use Scenario: 12V-to-1.0V, 2MHz, 3-phase VRM in space-constrained industrial edge compute modules. IC Role / Device Role / Timing Role: High-speed gate driver enabling <10ns rise/fall times and <30ns propagation delays to maintain phase alignment across all channels. Use Value: QFN-8 (3×3 mm) package with thermal pad achieves 80°C/W θJA, allowing full 2MHz operation without derating in 40°C ambient. |
Use Scenario: 24V-to-3.3V buck converter for industrial IoT gateway power management. IC Role / Device Role / Timing Role: Robust gate driver rated for 30V phase-node transients and -10V undershoot, paired with 30V-rated MOSFETs. Use Value: 30V phase voltage rating and -10V pulse tolerance (20ns) ensure reliability in noisy 24V automotive-grade input environments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual N-channel MOSFET driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL6207CRZ | Same pinout, but lacks diode emulation and FCCM control; lower 2.5A lower gate sink current. | Not suitable for light-load efficiency-critical designs or pre-biased start-up; limited to fixed-frequency CCM operation. | Select ISL6207CRZ only if diode emulation is unnecessary and cost reduction is prioritized over efficiency optimization. |
| MP86884DQKT-LF-Z | 40V max phase rating, integrated current sensing, no internal bootstrap diode; requires external bootstrap diode and sense resistor. | Targeted at higher-input-voltage industrial DC/DC where current monitoring is required; not optimized for mobile CPU VRMs. | Choose MP86884DQKT-LF-Z when system-level current telemetry is mandatory and board space allows external bootstrap components. |
Compared with ISL6208CRZ-T, ISL6207CRZ offers pin-compatible simplicity but sacrifices light-load efficiency and startup robustness, while MP86884DQKT-LF-Z trades integration for higher voltage capability and sensing - making ISL6208CRZ-T the optimal choice for mobile microprocessor core-voltage regulation where thermal density, efficiency, and seamless CPU state transitions are critical.
Availability
ISL6208CRZ-T is available at Aetrix Electronics and suitable for Intel®/AMD® mobile processor VRMs, high-frequency low-profile DC/DC converters, and high-input-voltage buck regulators requiring stable component supply across production lifecycles.
Supply support for ISL6208CRZ-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 is a leading provider of precision analog and power management ICs, now part of Renesas Electronics, with deep expertise in high-efficiency DC/DC conversion for computing and industrial markets.
The ISL6208CRZ-T belongs to Intersil's high-frequency synchronous buck driver product line, designed specifically to meet the thermal, efficiency, and transient-response demands of advanced mobile microprocessor core-voltage regulation.
FAQ
What is the maximum switching frequency supported by the ISL6208CRZ-T?
The ISL6208CRZ-T supports switching frequencies up to 2MHz. This capability is enabled by its 8ns typical propagation delays and sub-10ns transition times driving 3000pF loads, allowing compact magnetics and fast transient response in mobile VRM designs. The ISL6208CRZ-T maintains stable operation at this frequency when paired with appropriately selected MOSFETs and layout practices that minimize parasitic inductance.
Does the ISL6208CRZ-T require an external bootstrap diode?
No, the ISL6208CRZ-T integrates a bootstrap Schottky diode internally. This eliminates the need for an external diode, reducing BOM count and PCB area while improving reliability. Users only need to place a ceramic capacitor between BOOT and PHASE pins - typically ≥0.15µF for common gate charge requirements - to complete the bootstrap circuit for the high-side driver.
How does the three-state PWM input function in the ISL6208CRZ-T?
The ISL6208CRZ-T's three-state PWM input detects a mid-range voltage window (0.7–1.3V rising, 3.5–4.1V falling) to trigger shutdown. When the PWM signal remains within this window for ≥175ns, both UGATE and LGATE are pulled low and held off - enabling clean power-stage shutdown during CPU sleep states without requiring controller firmware changes or external logic.
What is the purpose of the FCCM pin on the ISL6208CRZ-T?
The FCCM pin on the ISL6208CRZ-T controls diode emulation mode: when pulled low, it enables zero-current detection to turn off LGATE at inductor current zero-crossing, forcing discontinuous conduction mode (DCM) for improved light-load efficiency and monotonic pre-biased start-up. When high, the ISL6208CRZ-T operates in forced continuous conduction mode (CCM).
Is the ISL6208CRZ-T pin-compatible with other drivers in the same family?
Yes, the ISL6208CRZ-T is pin-to-pin compatible with the ISL6207CRZ in the 8-lead QFN-3×3 package. Both share identical pin assignments and footprint, allowing direct substitution where diode emulation and enhanced lower gate sink current are not required - though ISL6208CRZ-T provides superior light-load efficiency and shoot-through immunity due to its 4A sink capability and adaptive protection.
ISL6208CRZ-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 8-VQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Programmable:
- Not Verified
- Driven Configuration:
- Half-Bridge
- Channel Type:
- Synchronous
- Number of Drivers:
- 2
- Gate Type:
- N-Channel MOSFET
- Voltage - Supply:
- 4.5V ~ 5.5V
- Logic Voltage - VIL, VIH:
- 0.5V, 2V
- Current - Peak Output (Source, Sink):
- 2A, 2A
- Input Type:
- Non-Inverting
- High Side Voltage - Max (Bootstrap):
- 33 V
- Rise / Fall Time (Typ):
- 8ns, 8ns
- Operating Temperature:
- -10°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-QFN (3x3)
ISL6208CRZ-T FAQ
1.How can I place an order for ISL6208CRZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL6208CRZ-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 ISL6208CRZ-T reliable?
The price and inventory of ISL6208CRZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL6208CRZ-T is usually 5 days.
3.What payment methods are accepted for ISL6208CRZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL6208CRZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL6208CRZ-T?
ISL6208CRZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL6208CRZ-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 ISL6208CRZ-T?
For technical support, including ISL6208CRZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL6208CRZ-T requirements.
6.How does Aetrix verify that ISL6208CRZ-T is sourced from the original manufacturer or authorized distributors?
All ISL6208CRZ-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 ISL6208CRZ-T meets industry standards.
7.What is the process for return or replacement of ISL6208CRZ-T?
All ISL6208CRZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL6208CRZ-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 ISL6208CRZ-T part is unused and in its original packaging.
Return procedure for ISL6208CRZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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