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Renesas ISL6596IRZ-T
- Part No.:
- ISL6596IRZ-T
- Manufacturer:
- Renesas
- Category:
- Gate Drivers
- Package:
- 10-VFDFN Exposed Pad
- Datasheet:
-
ISL6596IRZ-T.pdf
- Description:
- IC GATE DRVR HALF-BRIDGE 10DFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,147
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Product details
Overview
ISL6596IRZ-T from Renesas is a synchronous rectified MOSFET driver optimized for high-frequency buck converters driving two N-Channel power MOSFETs, featuring 4A typical sink current on the lower gate driver, <8ns rise/fall times into 3nF load, and adaptive shoot-through protection. It operates from a single 5V supply and supports 3.3V/5V PWM inputs for core voltage regulation in advanced microprocessors.
For engineers reviewing the ISL6596IRZ-T datasheet, ISL6596IRZ-T pinout, ISL6596IRZ-T application, or ISL6596IRZ-T equivalent, key selection considerations include its -40°C to +85°C operating range, 10-lead 3×3mm DFN package with exposed thermal pad, bootstrap-integrated upper gate drive, and tri-state PWM input with 20ns hold-off time for negative transient suppression.
Technical Context
The ISL6596IRZ-T implements adaptive dead-time control by monitoring LGATE and UGATE–PHASE voltages to dynamically adjust turn-on delays (tPDHU, tPDHL), preventing simultaneous conduction. Its internal low-forward-drop bootstrap diode eliminates external diode requirements while enabling efficient high-side N-MOSFET drive.
It features programmable PWM logic thresholds via VCTRL pin (2.4–2.9V falling/rising), tri-state shutdown detection with 20ns hold-off, and dedicated 0.4Ω lower gate sink resistance to suppress Miller-induced self-turn-on during high dV/dt switching node transitions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Supply | 5V ±10% - single low-voltage bias minimizes switching losses in high-Ciss, high-fSW applications |
| Output Rise/Fall Time | <8ns (UGATE), <4ns (LGATE) into 3nF - enables >1MHz synchronous buck operation |
| Lower Gate Sink Resistance | 0.4Ω typical - ensures robust hold-down of low-side MOSFET gate during PHASE node rising edge |
| Adaptive Shoot-Through Protection | Hardware-monitored dead-time insertion - prevents cross-conduction without fixed timing constraints |
| PWM Input Compatibility | Supports 3.3V or 5V logic levels via VCTRL pin selection - interoperable with Renesas multi-phase controllers |
| Thermal Performance | θJA = 48°C/W (DFN) - enabled by exposed thermal pad and PCB vias to internal ground plane |
| Operating Temperature | -40°C to +100°C ambient - qualified for industrial and CPU core voltage applications |
Pinout & Package
ISL6596IRZ-T uses a 10-lead 3×3mm Dual Flat No-Lead (DFN) package compliant with JEDEC MO-220 QFN outline L10.3x3C, featuring an exposed thermal pad for enhanced heat dissipation. The package is RoHS-compliant and Pb-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 UGATE | Upper gate drive output | Drives high-side N-MOSFET gate; no external resistor permitted to preserve shoot-through protection integrity |
| 2 BOOT | Floating bootstrap supply | Connects to bootstrap capacitor between BOOT and PHASE; powers high-side driver via internal low-VF diode |
| 3, 8 N/C | No-connect terminals | Unbonded pins - must remain unconnected per datasheet |
| 4 PWM | Driver control input | Accepts tri-state PWM signal; initiates upper/lower FET switching sequence and enables shutdown mode |
| 5 GND | Ground reference | Common return for all signals; requires low-inductance connection to PCB ground plane |
| 6 LGATE | Lower gate drive output | Drives low-side N-MOSFET gate; 4A sink capability prevents self-turn-on from dV/dt coupling |
| 7 VCC | Bias supply input | +5V supply for internal logic and drivers; requires local ceramic bypass capacitor to GND |
| 9 VCTRL | PWM threshold control | Sets logic threshold: tie to 3.3V for 3.3V PWM, to 5V for 5V PWM - matches controller VCC level |
| 10 PHASE | Switching node return | Connects to source of high-side MOSFET; provides return path for upper gate drive current |
| Thermal Pad | Exposed die substrate | Must be connected via multiple thermal vias to inner-layer ground plane - not electrically active but critical for thermal performance |
Key Features
| Feature | Design Value |
|---|---|
| Integrated bootstrap diode | Eliminates external diode, reduces BOM count and layout complexity while maintaining high efficiency |
| Adaptive shoot-through protection | Dynamically adjusts dead time based on actual gate voltage transitions - avoids over-conservative fixed delays |
| 4A lower gate sink current | Prevents false turn-on of low-side MOSFET during high dV/dt at PHASE node - critical for stable 12V→1V conversion |
| Tri-state PWM input with 20ns hold-off | Enables clean suspend/resume without negative output transients - removes need for external Schottky clamping diode |
| Expandable bottom copper pad | Thermal pad supports >1.5W continuous power dissipation when properly implemented with ≥4 thermal vias |
Applications
| Core Voltage Regulation | High-Frequency DC/DC Converter |
|---|---|
|
Use Scenario: Power delivery to Intel® Core™ and AMD® Ryzen™ processors requiring tight voltage regulation at up to 200A with sub-1V output. IC Role / Device Role / Timing Role: Synchronous gate driver coordinating high-side/low-side N-MOSFETs in multi-phase buck topology with Renesas PWM controllers. Use Value: Adaptive dead-time control and 4A sink current ensure stable operation under rapid load transients and high dV/dt conditions. |
Use Scenario: Compact, low-profile VRM in telecom base station power modules operating at 1–2MHz switching frequency. IC Role / Device Role / Timing Role: High-speed gate driver enabling fast rise/fall times (<8ns) into 3nF gate loads for minimal switching loss. Use Value: Single 5V supply and integrated bootstrap reduce component count and PCB area versus discrete driver solutions. |
| High-Current Low-Voltage Supply | Synchronous Rectification |
|
Use Scenario: GPU power rail delivering >300A at 0.8V in AI accelerator cards with strict thermal envelope constraints. IC Role / Device Role / Timing Role: Dual N-MOSFET driver with exposed thermal pad and 48°C/W θJA for direct integration into thermally dense layouts. Use Value: Expandable copper pad and optimized DFN footprint enable effective heat spreading without heatsinks. |
Use Scenario: Secondary-side synchronous rectification in isolated LLC resonant converters for server PSUs. IC Role / Device Role / Timing Role: Gate driver for low-side N-MOSFET in synchronous rectifier stage, interfacing with isolated gate drive signals. Use Value: Tri-state PWM input and adaptive shoot-through protection prevent shoot-through during burst-mode or light-load operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous MOSFET driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL6612CRZ-T | Higher 6A lower gate sink current; supports up to 105°C ambient; same 10-lead DFN package | Better suited for >250A CPU VRMs with aggressive thermal constraints | Select when higher sink current and extended temperature margin are required; pin-compatible with identical footprint |
| MP86957DQKT-LF-Z | Monolithic 2-phase controller + driver; integrates PWM logic, current sensing, and gate drivers in one IC | Reduces system-level BOM count but requires redesign of control loop and layout | Choose for new designs prioritizing integration over discrete driver flexibility; not pin-compatible |
Compared with ISL6596IRZ-T, ISL6612CRZ-T offers higher sink strength and thermal rating in identical packaging, while MP86957DQKT-LF-Z replaces the discrete driver+controller architecture with a monolithic solution - trading layout flexibility for integration density.
Availability
ISL6596IRZ-T is available at Aetrix Electronics and suitable for core voltage regulation, high-frequency DC/DC conversion, and high-current low-voltage power supplies requiring stable component supply across industrial and computing applications.
Supply support for ISL6596IRZ-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 is a global semiconductor leader delivering trusted embedded design innovation, with expertise in power management, microcontrollers, and analog mixed-signal ICs.
The ISL6596IRZ-T belongs to Renesas' high-frequency synchronous gate driver product line, designed specifically for multi-phase CPU/GPU core voltage regulators requiring adaptive dead-time control and robust gate drive performance.
FAQ
What is the maximum recommended switching frequency for ISL6596IRZ-T?
The ISL6596IRZ-T is characterized for high-frequency operation with <8ns rise/fall times into 3nF loads, supporting reliable operation up to 2MHz in well-designed layouts. Actual maximum frequency depends on MOSFET gate charge, PCB parasitics, and thermal management - Renesas recommends limiting junction temperature to +125°C using the power dissipation equations in the datasheet. ISL6596IRZ-T has been validated in 1–1.5MHz multi-phase CPU VRMs.
Does ISL6596IRZ-T require an external bootstrap diode?
No, ISL6596IRZ-T integrates a low-forward-drop bootstrap diode internally, eliminating the need for an external diode. Users must connect only a bootstrap capacitor between BOOT and PHASE pins. This integration reduces component count, improves reliability, and simplifies layout - confirmed in the Functional Pin Descriptions and Bootstrap Considerations sections of the FN9240 datasheet for ISL6596IRZ-T.
How does the adaptive shoot-through protection in ISL6596IRZ-T differ from fixed dead-time schemes?
ISL6596IRZ-T monitors actual LGATE and UGATE–PHASE voltages to dynamically trigger upper/lower FET turn-on after detected gate voltage crossing ~1V, adapting dead time to real MOSFET characteristics. Unlike fixed schemes, this avoids unnecessary delay under light load or slow gate transitions, improving efficiency without risking shoot-through. This behavior is explicitly detailed in the "Operation and Adaptive Shoot-Through Protection" section of the ISL6596IRZ-T datasheet.
Can ISL6596IRZ-T drive both 3.3V and 5V PWM controllers without modification?
Yes, ISL6596IRZ-T supports both 3.3V and 5V PWM inputs via the VCTRL pin: tie VCTRL to 3.3V for 3.3V PWM threshold (2.4–2.9V window) or to 5V for 5V PWM threshold (same window referenced to 5V). This dual compatibility is confirmed in the Electrical Specifications table and "PWM Input and Threshold Control" section of the ISL6596IRZ-T datasheet, enabling seamless use with Renesas ISL69xxx and other multi-phase controllers.
What is the purpose of the tri-state PWM input and 20ns hold-off time in ISL6596IRZ-T?
The tri-state PWM input allows the ISL6596IRZ-T to detect controller suspension and enter a safe shutdown state where both gates are actively held low - preventing negative output transients. The 20ns hold-off time (tTSSHD) ensures noise immunity by requiring the PWM signal to remain in the shutdown window longer than propagation delays before disabling outputs. This feature eliminates external Schottky diodes in systems like CPU VRMs, as documented in the Applications and Electrical Specifications sections for ISL6596IRZ-T.
ISL6596IRZ-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 10-VFDFN 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:
- -
- Current - Peak Output (Source, Sink):
- -, 4A
- Input Type:
- Non-Inverting
- High Side Voltage - Max (Bootstrap):
- 36 V
- Rise / Fall Time (Typ):
- 8ns, 8ns
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-DFN (3x3)
ISL6596IRZ-T FAQ
1.How can I place an order for ISL6596IRZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL6596IRZ-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 ISL6596IRZ-T reliable?
The price and inventory of ISL6596IRZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL6596IRZ-T is usually 5 days.
3.What payment methods are accepted for ISL6596IRZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL6596IRZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL6596IRZ-T?
ISL6596IRZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL6596IRZ-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 ISL6596IRZ-T?
For technical support, including ISL6596IRZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL6596IRZ-T requirements.
6.How does Aetrix verify that ISL6596IRZ-T is sourced from the original manufacturer or authorized distributors?
All ISL6596IRZ-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 ISL6596IRZ-T meets industry standards.
7.What is the process for return or replacement of ISL6596IRZ-T?
All ISL6596IRZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL6596IRZ-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 ISL6596IRZ-T part is unused and in its original packaging.
Return procedure for ISL6596IRZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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