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Renesas ISL99140IRZ-T
- Part No.:
- ISL99140IRZ-T
- Manufacturer:
- Renesas
- Category:
- Full Half-Bridge (H Bridge) Drivers
- Package:
- 40-VFQFN Exposed Pad
- Datasheet:
-
ISL99140IRZ-T.pdf
- Description:
- IC HALF BRIDGE DRIVER 40A 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,195
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Product details
Overview
ISL99140IRZ-T from Renesas (formerly Intersil) is a 40A DrMOS power module integrating high-side and low-side MOSFETs, gate driver, bootstrap diode, and thermal warning output. It supports 3-state 3.3V PWM input, diode emulation for light-load efficiency, adaptive shoot-through protection, and operates up to 2MHz switching frequency in core voltage regulation for microprocessors.
For engineers reviewing the ISL99140IRZ-T datasheet, ISL99140IRZ-T pinout, ISL99140IRZ-T application, or ISL99140IRZ-T equivalent, key selection criteria include its 40A continuous current rating, 6×6 mm QFN package with exposed thermal pad, tri-state PWM compatibility with digital controllers (e.g., ISL68/69xxx, ZL8802), and thermal flag signaling at 150°C junction temperature.
Technical Context
The ISL99140IRZ-T implements a synchronous buck power stage with integrated FET driver logic that interprets 3-state PWM commands to control high-side (GH) and low-side (GL) MOSFETs. Its adaptive shoot-through protection monitors GH–SW and GL node voltages to enforce safe dead-time, while internal 20kΩ high-side gate-to-source resistor prevents self-turn-on during high dV/dt events on VIN.
Diode emulation is enabled via SMOD pin (active-low), allowing discontinuous conduction mode (DCM) entry at light loads with minimum GL on-time of 350ns. Thermal warning (THDN) is an open-drain output asserting low at 150°C junction temperature and clearing at 135°C, providing system-level thermal management without halting operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Average Output Current | 40A continuous - defines maximum sustained load current before thermal derating or shutdown |
| PWM Input Logic | 3-state 3.3V compatible - enables robust fault response with tri-state hold-off time of 75–225ns |
| Switching Frequency | Up to 2MHz - supports high-density VR designs with smaller magnetics and faster transient response |
| Thermal Warning Threshold | 150°C set / 135°C clear - provides 15°C hysteresis for stable thermal flag signaling without chatter |
| Package | 40-lead 6×6 mm QFN with exposed thermal pad - enables low θJC = 5°C/W for efficient heat transfer to PCB |
| Diode Emulation Control | SMOD pin with 10μA internal pull-up - allows immediate DCM activation or forced CCM by external logic |
| Bootstrap Diode | Integrated Schottky - eliminates external bootstrap diode, reducing BOM count and layout area |
Pinout & Package
ISL99140IRZ-T uses a 40-lead, 6×6 mm, 0.5 mm pitch thin quad flat no-lead (QFN) package with exposed thermal pad (PKG DWG L40.6x6A). The package features three ground domains: AGND (logic ground), PGND (power ground), and multiple VIN/SW/PHASE connections optimized for low-inductance power loop routing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 SMOD | Diode emulation enable | Active-low input; 10μA internal pull-up ensures CCM if left floating |
| 2 VCC | Logic bias supply | +5V ±5% supply for internal logic; requires local 1μF ceramic decoupling to AGND |
| 3 PVCC | Driver bias supply | +5V ±5% supply for gate drivers; shares decoupling capacitor with VCC in typical layout |
| 4 BOOT | High-side gate bootstrap | Floating supply for GH driver; requires 0.1–0.22μF ceramic cap to PHASE |
| 5,37,PAD1 AGND | Logic ground return | Direct connection to system ground plane; separate from PGND to minimize noise coupling |
| 6 GH | High-side gate drive output | Test/monitor point only; no external connection required |
| 7 PHASE | Bootstrap return node | Internally tied to SW; external connection not needed |
| 8–14, PAD2 VIN | Main power input | 10× parallel connections for low-impedance 12V input path; requires multiple 10μF + 0.1μF ceramics to PGND |
| 15–35, PAD3 SW | Switch node | 11× parallel connections to inductor; carries full AC switching current; must be routed short and wide |
| 16–28 PGND | Power ground return | 13× parallel connections to system ground plane; critical for thermal and EMI performance |
| 36 GL | Low-side gate drive output | Test/monitor point only; no external connection required |
| 38 THDN | Thermal warning flag | Open-drain output; pulls low at 150°C junction temp; requires external pull-up resistor |
| 39 EN | Enable input | 2μA internal weak pull-down; high = active, low = force both FETs off regardless of PWM state |
| 40 PWM | Three-state PWM input | Accepts 3.3V logic with tri-state window (1.1–1.5V rising / 1.6–1.95V falling); compatible with ISL68/69xxx and ZL8802 |
Key Features
| Feature | Design Value |
|---|---|
| Intel DrMOS Rev 4.0 Compliant | Meets specification for multiphase VRM/VRD applications including timing, interface, and thermal behavior |
| Adaptive Shoot-Through Protection | Dynamically adjusts dead-time based on GH–SW and GL node transitions to prevent cross-conduction under varying load and temperature |
| Integrated Bootstrap Schottky Diode | Eliminates discrete bootstrap diode, reducing component count and PCB area while maintaining reliable high-side gate drive |
| Undervoltage Lockout (UVLO) | Enables operation only when VCC exceeds 3.40V and disables below 2.92V, preventing erratic gate drive during brown-out |
| High dV/dt Immunity | Integrated 20kΩ high-side gate-to-source resistor suppresses false turn-on during fast-rising VIN transients |
Applications
| Core Voltage Regulation | GPU Power Delivery |
|---|---|
Use Scenario: Regulating 1.0V–1.8V core supply for high-performance x86 microprocessors in servers and workstations. IC Role / Device Role / Timing Role: Primary power stage in multiphase VRM, synchronized to controller PWM with sub-100ns propagation delays. Use Value: Delivers 40A per phase with <1.5% output voltage ripple at 2MHz, enabling compact VRM designs meeting Intel VRD13/14 specs. | Use Scenario: Providing dynamic, high-current power to discrete graphics processing units in gaming PCs and AI accelerators. IC Role / Device Role / Timing Role: High-bandwidth POL converter responding to GPU load transients within 100ns via fast PWM edge detection. Use Value: Diode emulation maintains >90% efficiency at 5A load, while thermal warning (THDN) feeds back to GPU controller for proactive throttling. |
| Memory Subsystem VR | Cloud Computing POL Converter |
Use Scenario: Supplying DDR4/DDR5 memory rails (1.2V/1.1V) in high-density rack servers with strict thermal budgets. IC Role / Device Role / Timing Role: Compact, thermally optimized power stage placed adjacent to memory modules to minimize IR drop and noise coupling. Use Value: 6×6 mm QFN package with 5°C/W θJC enables operation at 85°C ambient without derating, supporting fanless server configurations. | Use Scenario: Distributed point-of-load conversion for ASICs and FPGAs in hyperscale data center switches and NICs. IC Role / Device Role / Timing Role: Single-phase or paralleled DrMOS stage controlled by ZL8802 or ISL68201 for PMBus-configurable output voltage and margining. Use Value: Tri-state PWM compatibility allows seamless integration with digital controllers for phase shedding and dynamic frequency scaling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar DrMOS power stage applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL99227BIRZ-T | 60A rating, adds IMON/TMON/OCP flags, 5×5 mm package, supports 3.3V and 5V PWM | Targeted at higher-current CPU cores and systems requiring current monitoring and over-temperature reporting | Select ISL99227BIRZ-T when >40A per phase or additional telemetry (IMON, TMON) is required; not pin-compatible due to different pin count and layout |
| SiC454CD-T1-GE3 | 40A rating, 3.3V PWM, integrated current sense, 6×6 mm QFN, RoHS-compliant | Designed for enterprise SSDs and telecom POL where current sensing and tighter DC accuracy are prioritized | Choose SiC454CD-T1-GE3 if integrated current sense (±1.5% gain error) and lower quiescent current (120μA VCC standby) are critical; pinout differs in SW/VIN distribution |
Compared with ISL99140IRZ-T, ISL99227BIRZ-T offers higher current and telemetry but requires PCB redesign, while SiC454CD-T1-GE3 provides current sensing at similar current rating but with distinct pin assignment and no thermal warning output.
Availability
ISL99140IRZ-T is available at Aetrix Electronics and suitable for high-frequency VRM, GPU power delivery, and cloud computing POL applications requiring stable component supply across industrial temperature range (-40°C to +85°C) and long-term production continuity.
Supply support for ISL99140IRZ-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) is a global semiconductor leader delivering high-performance analog, power management, and embedded processing solutions for industrial, automotive, and data infrastructure markets.
The ISL99140IRZ-T belongs to Renesas' DrMOS power stage product line, engineered specifically for high-efficiency, high-density voltage regulation in advanced microprocessor, GPU, and memory subsystems operating at frequencies up to 2MHz.
FAQ
What is the maximum continuous output current supported by the ISL99140IRZ-T?
The ISL99140IRZ-T supports 40A average output current continuously under proper thermal management. This rating assumes adequate PCB copper area, airflow, and adherence to recommended operating conditions including ambient temperature ≤+85°C and junction temperature ≤+125°C. Derating applies above 85°C ambient or with insufficient heatsinking.
Does the ISL99140IRZ-T require an external bootstrap diode?
No, the ISL99140IRZ-T integrates a Schottky bootstrap diode internally. This eliminates the need for an external diode, simplifying layout and reducing BOM count. A 0.1–0.22μF ceramic capacitor must still be placed between BOOT and PHASE pins, and a series resistor (1.5–3.9Ω) is recommended for high-VIN applications to limit peak bootstrap current.
How does the thermal warning (THDN) pin function on the ISL99140IRZ-T?
The THDN pin on the ISL99140IRZ-T is an open-drain output that asserts low when the internal junction temperature reaches 150°C and clears (goes high-impedance) when temperature drops to 135°C. It does not shut down the device but signals impending thermal failure to the controller, enabling system-level thermal management. An external pull-up resistor is required.
Can the ISL99140IRZ-T operate with a 5V PWM controller?
The ISL99140IRZ-T is designed for 3.3V PWM logic and is not compatible with 5V PWM controllers such as the ISL637x family. Its tri-state thresholds (1.1–1.5V rising / 1.6–1.95V falling) are optimized for 3.3V systems. For 5V PWM compatibility, use the ISL99125B or ISL99135B families instead.
What is the purpose of the SMOD pin on the ISL99140IRZ-T?
The SMOD pin on the ISL99140IRZ-T controls diode emulation mode: pulled low to enable DCM for improved light-load efficiency, or held high to force continuous conduction mode (CCM). With 10μA internal pull-up, leaving SMOD unconnected defaults to CCM. Response is immediate upon state change, independent of PWM timing.
ISL99140IRZ-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 40-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Output Configuration:
- Half Bridge
- Applications:
- DC-DC Converters
- Interface:
- PWM
- Load Type:
- Inductive
- Technology:
- DrMOS
- Rds On (Typ):
- -
- Current - Output / Channel:
- 40A
- Current - Peak Output:
- -
- Voltage - Supply:
- 4.75V ~ 5.25V
- Voltage - Load:
- 4.5V ~ 18V
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Features:
- Bootstrap Circuit, Diode Emulation, Status Flag
- Fault Protection:
- Over Temperature, Shoot-Through, UVLO
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 40-QFN (6x6)
ISL99140IRZ-T FAQ
1.How can I place an order for ISL99140IRZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL99140IRZ-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 ISL99140IRZ-T reliable?
The price and inventory of ISL99140IRZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL99140IRZ-T is usually 5 days.
3.What payment methods are accepted for ISL99140IRZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL99140IRZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL99140IRZ-T?
ISL99140IRZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL99140IRZ-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 ISL99140IRZ-T?
For technical support, including ISL99140IRZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL99140IRZ-T requirements.
6.How does Aetrix verify that ISL99140IRZ-T is sourced from the original manufacturer or authorized distributors?
All ISL99140IRZ-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 ISL99140IRZ-T meets industry standards.
7.What is the process for return or replacement of ISL99140IRZ-T?
All ISL99140IRZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL99140IRZ-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 ISL99140IRZ-T part is unused and in its original packaging.
Return procedure for ISL99140IRZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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