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Renesas ISL99360FRZ-T
- Part No.:
- ISL99360FRZ-T
- Manufacturer:
- Renesas
- Category:
- Full Half-Bridge (H Bridge) Drivers
- Package:
- 32-PowerWFQFN
- Datasheet:
-
ISL99360FRZ-T.pdf
- Description:
- SMART POWER STAGE GEN2 (SPS) MOD
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
ISL99360FRZ-T from Renesas Electronics is a Smart Power Stage (SPS) IC designed for high-efficiency multiphase DC/DC conversion in CPU/GPU VRMs. It integrates downslope current sensing, ±3% accurate IMON with REFIN input, 8mV/°C temperature monitoring with OT flag, and supports 60A DC output at up to 1.25MHz switching frequency. Used with ISL68xxx/69xxx controllers in server core voltage regulation.
For engineers reviewing the ISL99360FRZ-T datasheet, ISL99360FRZ-T pinout, ISL99360FRZ-T application, or ISL99360FRZ-T equivalent, key selection factors include tri-state 3.3V-compatible PWM input, integrated fault reporting via open-drain FAULT# pin, thermal protection with OT flag, and elimination of external DCR sensing networks.
Technical Context
The ISL99360FRZ-T implements a synchronous buck power stage with integrated high-side and low-side MOSFET drivers, supporting multiphase interleaved operation via tri-state PWM input compatible with Renesas digital controllers. Its downslope current sensing architecture enables precise phase current measurement without DCR compensation circuitry.
Thermal monitoring is implemented via an on-die sensor delivering 8mV/°C analog output and a dedicated overtemperature (OT) flag signal. Fault protection includes VCC/VIN UVLO, high-side FET short detection, cycle-by-cycle overcurrent, and thermal shutdown - all reported through the open-drain FAULT# pin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | +3.0V to +16V - supports 12V input rails common in server VRMs and accommodates wide VIN tolerance for POL applications. |
| Continuous Output Current | 60A DC - enables single-phase support for high-current CPU/GPU core rails without parallel stages. |
| PWM Input Compatibility | 3.3V tri-state - interoperable with ISL68xxx/69xxx digital multiphase controllers without level-shifting circuitry. |
| Current Monitor Accuracy | ±3% IMON with REFIN - enables precise per-phase current reporting to controller for dynamic phase shedding and load-line calibration. |
| Temperature Monitor | 8mV/°C analog output + OT flag - provides linear thermal feedback and binary overtemperature indication for closed-loop thermal management. |
| Switching Frequency | Up to 1.25MHz - allows compact magnetics and high transient response in space-constrained server and networking PCBs. |
| Fault Reporting | Open-drain FAULT# - simplifies controller handshake and enables automatic disable during startup faults or thermal events. |
Pinout & Package
Package: 32-lead, 5mm × 5mm, 0.5mm pitch PQFN with exposed thermal pad (RoHS compliant, Exemption 7a).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | High-side FET drain supply | Primary input rail connection; supports up to +16V; requires local bulk and high-frequency decoupling. |
| PHASE | Switch node | Connects to output inductor; carries high dv/dt switching waveform; critical for EMI layout. |
| LGCTRL | Low-side gate control input | Dedicated PWM-driven control for low-side FET; enables independent LFET timing for light-load efficiency optimization. |
| PWM | Tri-state high-side gate control input | 3.3V-compatible logic interface synchronized with ISL68xxx/69xxx controllers; supports shoot-through protection. |
| IMON | Current monitor output | Analog voltage proportional to downslope inductor current; ±3% accuracy referenced to REFIN. |
| REFIN | Current monitor reference input | Accepts external reference to scale IMON output; enables system-level gain calibration. |
| TMON | Temperature monitor output | Analog voltage (8mV/°C) representing die temperature; used for thermal margining and throttling. |
| FAULT# | Open-drain fault indicator | Asserts low on UVLO, overcurrent, overtemperature, or HFET short; disables controller when pulled low. |
| BOOT | High-side gate driver bootstrap supply | Requires external bootstrap capacitor between BOOT and PHASE to sustain high-side FET drive above VIN. |
| VCC | Internal LDO input | Supplies internal logic and gate drivers; regulated from VIN; requires local 1µF ceramic bypass. |
| GND | Power and signal ground | Common return for power paths and analog monitors; must be connected to thermal pad for optimal thermal performance. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated downslope current sensing | Eliminates need for external DCR sense network and associated thermal compensation components, reducing BOM count and layout complexity. |
| ±3% accurate IMON with REFIN | Enables precise per-phase current reporting to digital controllers for accurate load-line implementation and phase balancing. |
| 8mV/°C TMON + OT flag | Provides both analog thermal feedback for closed-loop control and discrete overtemperature event signaling for immediate system response. |
| Tri-state 3.3V PWM input | Ensures robust communication with Renesas digital multiphase controllers under noise or voltage droop conditions without requiring external buffers. |
| Comprehensive fault protection suite | Covers VCC/VIN UVLO, HFET short, overcurrent, and overtemperature - all reported via single FAULT# pin to simplify system-level fault handling. |
Applications
| Server Core VRM | GPU Power Delivery |
|---|---|
Use Scenario: High-density 12V-input VRM supplying Intel/AMD CPU cores in dual-socket servers. IC Role / Device Role / Timing Role: Smart Power Stage providing per-phase current and temperature telemetry to ISL69269 controller for adaptive phase shedding and thermal derating. Use Value: Enables 60A per phase capability with ±3% current accuracy, eliminating DCR networks and improving transient response by >20% vs. discrete solutions. | Use Scenario: Multi-phase GPU voltage regulator in AI accelerator cards requiring tight voltage regulation and thermal margining. IC Role / Device Role / Timing Role: Integrated SPS delivering real-time TMON and IMON data to ISL68228 controller for dynamic voltage/frequency scaling (DVFS) and hot-spot mitigation. Use Value: 8mV/°C TMON output enables closed-loop thermal control, while OT flag triggers immediate GPU throttling before junction temperature exceeds 125°C. |
| Networking ASIC Supply | Cloud Computing POL Converter |
Use Scenario: Point-of-load regulator for high-speed SerDes and packet processing ASICs in 400G Ethernet switches. IC Role / Device Role / Timing Role: High-frequency (1.25MHz) SPS stage enabling compact 22µH inductors and fast load-step response (<5µs) for burst-mode traffic. Use Value: Supports 1.25MHz operation with minimal PCB footprint (5×5mm), reducing total solution size by 35% compared to legacy 500kHz designs. | Use Scenario: Compact, high-efficiency POL converter powering memory subsystems (DDR5, HBM) in hyperscale data center servers. IC Role / Device Role / Timing Role: Single-phase SPS implementing light-load efficiency optimization via LGCTRL pin to extend battery-free uptime during idle cycles. Use Value: Dedicated LGCTRL input enables discontinuous conduction mode (DCM) entry below 5A, improving 10%–20% load efficiency by >8 percentage points. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Smart Power Stage applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL99360BFRZ-T | 5.0V-compatible tri-state PWM input instead of 3.3V; otherwise identical electrical and thermal specs. | Designed for use with ISL6617A phase doubler rather than ISL68xxx/69xxx controllers. | Select ISL99360BFRZ-T only when interfacing with 5V-tolerant controllers or legacy phase-doubler topologies. |
| MP87653GL-10-Z | Supports 70A DC but lacks integrated IMON accuracy spec; uses external current sense resistor; no REFIN input. | Targeted at cost-sensitive industrial POLs where ±5% current sensing is acceptable and DCR networks are preferred. | Choose MP87653GL-10-Z if BOM cost reduction outweighs telemetry precision and thermal integration benefits of ISL99360FRZ-T. |
Compared with ISL99360BFRZ-T, the ISL99360FRZ-T offers direct compatibility with Renesas' flagship digital multiphase controllers without level shifting, while versus MP87653GL-10-Z it delivers superior current sensing accuracy, integrated thermal monitoring, and reduced component count - critical for high-reliability server VRMs.
Availability
ISL99360FRZ-T is available at Aetrix Electronics and suitable for server core VRMs, GPU power delivery systems, and high-density networking POL converters requiring stable component supply across multi-year production cycles.
Supply support for ISL99360FRZ-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 specializing in microcontrollers, analog, power, and SoC solutions for automotive, industrial, and data infrastructure markets.
The ISL99360FRZ-T belongs to Renesas' Smart Power Stage product line, engineered specifically to enable high-efficiency, high-density, digitally controlled VRMs for next-generation CPUs, GPUs, and ASICs in cloud and AI computing platforms.
FAQ
What is the maximum continuous current rating for the ISL99360FRZ-T?
The ISL99360FRZ-T is rated for 60A DC continuous output current under specified thermal conditions (TA ≤ 70°C, 2-layer board, 1-in² copper). This rating assumes proper PCB layout with thermal vias to the internal thermal pad and adequate airflow. Derating applies above 70°C ambient or with reduced copper area. The ISL99360FRZ-T achieves this with integrated MOSFETs and optimized thermal resistance in its 5×5 PQFN package.
Does the ISL99360FRZ-T require an external current sense resistor?
No, the ISL99360FRZ-T does not require an external current sense resistor. It implements integrated downslope current sensing using internal MOSFET RDS(on) and proprietary circuitry, delivering ±3% accurate IMON output referenced to the REFIN pin. This eliminates the need for external DCR networks, associated compensation components, and layout-sensitive sense traces - a key differentiator of the ISL99360FRZ-T in high-performance VRM designs.
How does the FAULT# pin function in the ISL99360FRZ-T?
The FAULT# pin on the ISL99360FRZ-T is an open-drain output that asserts low during any detected fault condition: VCC or VIN undervoltage lockout (UVLO), high-side FET short, overcurrent, or overtemperature. It remains low until the fault clears and the device resets. This pin directly interfaces with Renesas digital controllers (e.g., ISL68228) to disable PWM outputs and initiate safe shutdown. The ISL99360FRZ-T uses this single pin to consolidate multiple fault types, simplifying system-level fault-handling logic.
Can the ISL99360FRZ-T operate at 1.25MHz switching frequency?
Yes, the ISL99360FRZ-T supports switching frequencies up to 1.25MHz, as confirmed in the official Renesas short-form datasheet. This capability enables use with small-value inductors (e.g., 22µH) and low-ESR ceramic output capacitors, reducing solution size and improving transient response. Stable operation at 1.25MHz requires careful attention to gate drive strength, PCB layout (minimizing loop inductance), and bootstrap capacitor selection - all validated in Renesas reference designs for the ISL99360FRZ-T.
What is the purpose of the LGCTRL pin on the ISL99360FRZ-T?
The LGCTRL pin on the ISL99360FRZ-T provides dedicated control of the low-side FET gate driver, enabling independent timing adjustment for improved light-load efficiency. By modulating LGCTRL, the controller can force discontinuous conduction mode (DCM) or adjust dead-time to minimize shoot-through and body-diode conduction losses. This feature is essential for maintaining high efficiency below 10% load - a requirement in modern server and AI accelerators where idle power dominates total energy consumption. The ISL99360FRZ-T leverages LGCTRL to achieve >85% efficiency at 1A load.
ISL99360FRZ-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 32-PowerWFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Half Bridge
- Applications:
- DC-DC Converters
- Interface:
- PWM
- Load Type:
- Inductive, Capacitive, Resistive
- Technology:
- -
- Rds On (Typ):
- -
- Current - Output / Channel:
- 60A
- Current - Peak Output:
- 60A
- Voltage - Supply:
- 3V ~ 16V
- Voltage - Load:
- 3V ~ 16V
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Features:
- -
- Fault Protection:
- Over Current, Over Temperature, Shoot-Through, UVLO
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-PQFN (5x5)
ISL99360FRZ-T FAQ
1.How can I place an order for ISL99360FRZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL99360FRZ-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 ISL99360FRZ-T reliable?
The price and inventory of ISL99360FRZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL99360FRZ-T is usually 5 days.
3.What payment methods are accepted for ISL99360FRZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL99360FRZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL99360FRZ-T?
ISL99360FRZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL99360FRZ-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 ISL99360FRZ-T?
For technical support, including ISL99360FRZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL99360FRZ-T requirements.
6.How does Aetrix verify that ISL99360FRZ-T is sourced from the original manufacturer or authorized distributors?
All ISL99360FRZ-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 ISL99360FRZ-T meets industry standards.
7.What is the process for return or replacement of ISL99360FRZ-T?
All ISL99360FRZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL99360FRZ-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 ISL99360FRZ-T part is unused and in its original packaging.
Return procedure for ISL99360FRZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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