ISL99390FRZ-TR5935 - 90A Smart Power Stage | Renesas
MPN: ISL99390FRZ-TR5935 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $32.4587 | $32.46 |
| 10 | $0 | $0.00 |
| 100 | $0 | $0.00 |
| 500 | $0 | $0.00 |
| 1,000 | $0 | $0.00 |
ISL99390FRZ-TR5935 Overview
A Smart Power Stage is an integrated power-conversion module that combines high-side and low-side switching functions with gate-drive circuitry and system monitoring. It belongs to the broader hierarchy of DC-DC converter power stages, power-management ICs, and semiconductor modules. By integrating the power switching and monitoring functions into one package, an SPS can simplify layout and reduce the number of external power components compared with discrete implementations.
Verified product information identifies a 90 A current rating, Gen2 SPS architecture, and integrated current and temperature monitors. The device is associated with a 16 V-class power-stage product listing in distributor data, while one alternate distributor description states a 4.5 V to 24 V input range. Because the supplied data contains conflicting voltage descriptions, the detailed manufacturer datasheet should be consulted before selecting the device for a specific converter.
Typical applications include high-current voltage-regulator modules for processors and accelerators, server and networking power systems, point-of-load converters, and other synchronous buck or multiphase power-conversion designs. Its 90 A rating makes it relevant to power stages requiring substantial output current, but the exact phase count, switching frequency, protection behavior, and electrical limits must be confirmed from the Renesas datasheet.
Designers should verify the controller protocol, PWM and enable logic, current-sense connection, temperature-monitoring interface, exposed-pad thermal path, and recommended PCB layout before using this part in a new board. The integrated monitors can improve fault detection, but they do not eliminate the need for accurate layout, current-loop compensation, and thermal validation. XAIPART provides the official product page, distributor listings, and the manufacturer datasheet link for engineering review.
Drop-in alternatives for ISL99390FRZ-TR5935 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ISL99390BFRZ-TR5935
✅ Drop-In📋 Reference alternative (not in catalog)
ISL99390FRZ-T
✅ Drop-In📋 Reference alternative (not in catalog)
ISL99390FRZ-T7A
✅ Drop-In📋 Reference alternative (not in catalog)
MP86957
✅ Drop-In📋 Reference alternative (not in catalog)
CSD95490Q5MC
✅ Drop-In📋 Reference alternative (not in catalog)
ISL99390FRZ-TR5935 Maximum Ratings & Electrical Characteristics
| Product Type | Gen2 Smart Power Stage (SPS) module |
| Rated Output Current | 90 A |
| Switching Topology | Half-bridge driver for synchronous DC-DC conversion |
| Alternate Distributor Input Range | 4.5 V to 24 V |
| Package | 39-PowerWFQFN, 5 mm x 6 mm |
| Package Pin Count | 39 pins |
| Mounting Type | Surface mount |
| Current Monitoring | Integrated high-accuracy current monitor |
| Temperature Monitoring | Integrated high-accuracy temperature monitor |
| Power Stage Generation | Gen2 |
ISL99390FRZ-TR5935 39 pins Pin Configuration Guide
Pin configuration for ISL99390FRZ-TR5935 (39 pins package). This power device features gate, drain, and source terminals. For non-polarized packages, refer to the manufacturer datasheet for exact pin 1 orientation and footprint details. Common applications include power supply design, motor driving, and load switching.
No detailed pinout data available for ISL99390FRZ-TR5935.
Refer to the datasheet for full pin configuration.
Typical Applications
ISL99390FRZ-TR5935 is suitable for 6 applications: High-Current Processor VRM, Multiphase DC-DC Converter, Point-of-Load Converter, Server and Networking Power, High-Current Load Switching, Power-Module Integration.
High-Current Processor VRM
The ISL99390FRZ-TR5935 fits a high-current processor VRM because the verified Renesas data identifies a 90 A Smart Power Stage with integrated current and temperature monitors. Place it in a multiphase synchronous converter after confirming the controller’s PWM, enable, fault, and telemetry requirements. Its integrated monitoring can improve rail diagnostics, but the layout must minimize high-current loop area and provide a robust thermal path from the 5 mm by 6 mm 39-PowerWFQFN package. Exact operating limits should be taken from the Renesas datasheet.
Recommended
Multiphase DC-DC Converter
The ISL99390FRZ-TR5935 is suitable as a building block for a multiphase DC-DC converter because the verified product description identifies it as a half-bridge NMOS driver and 90 A Smart Power Stage. Use multiple stages only when the controller, phase-balancing method, current-share loop, and fault handling are matched to the module data. The integrated current monitor can support telemetry and protection decisions, but its accuracy and filtering must be confirmed from the datasheet. Power-stage layout and inductor selection remain critical at this current level.
Recommended
Point-of-Load Converter
The 90 A rating makes the ISL99390FRZ-TR5935 relevant for a high-current point-of-load converter serving demanding digital loads. The module integrates the switching stage and monitoring functions into a compact surface-mount package, which can reduce board-level integration compared with discrete gate-drive and power-switch designs. Before adoption, verify the input-voltage range because the supplied distributor descriptions conflict between 4.5 V to 24 V and a 16 V-related description. Confirm switching frequency, output-current derating, thermal limits, and controller compatibility.
Recommended
Server and Networking Power
The ISL99390FRZ-TR5935 can be evaluated for server or networking power systems where high-current synchronous conversion, fault telemetry, and thermal monitoring are important. The verified Renesas description specifically highlights integrated current and temperature monitors, which can help a system controller detect abnormal loading or thermal conditions. Suitability still depends on the rack power topology, phase count, current-limit strategy, and airflow. Validate the package’s thermal performance in the final PCB and enclosure rather than relying only on the nominal 90 A rating.
Recommended
High-Current Load Switching
The ISL99390FRZ-TR5935 may be used in high-current switching applications that require an integrated half-bridge driver and NMOS power stage. Its 39-PowerWFQFN package supports compact placement, while the integrated current and temperature monitoring functions can provide system-level visibility. The application must still account for switching-node transients, gate-drive requirements, inductor sizing, current limiting, and fault shutdown. Because the supplied data does not include complete electrical limits, use the Renesas datasheet as the release authority.
Recommended
Power-Module Integration
The ISL99390FRZ-TR5935 is appropriate for evaluating compact power modules that need integrated switching, current sensing, and temperature monitoring in one package. Its 39-PowerWFQFN form factor can simplify power-path integration, but the exposed-pad thermal interface and surrounding copper must be designed to dissipate expected losses. Monitor readings should be validated across operating temperature and load conditions. The module should not be treated as a generic MOSFET substitute because its control, sensing, and protection interfaces are application-specific.
Recommended
Recommended Products Summary
Engineering reference data for ISL99390FRZ-TR5935 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ISL99390BFRZ-TR5935 | ISL99390FRZ-T | MP86957 | CSD95490Q5MC |
|---|---|---|---|---|---|
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics | Monolithic Power Systems | Texas Instruments |
| Package | 39-PowerWFQFN (5 mm x 6 mm) | Similar PQFN package; exact compatibility requires verification | Similar 39-PowerWFQFN; exact MPN verification required | Similar power-stage package reported; exact pin compatibility requires verification | Similar QFN family; layout verification required |
Key Differentiators
- Integrated high-accuracy monitoring (vs MP86957)
- 90 A Smart Power Stage positioning (vs CSD95490Q5MC)
- Compact 5 mm by 6 mm PowerWFQFN integration (vs ISL99390BFRZ-TR5935)
- Integrated half-bridge power-stage role (vs ISL99390FRZ-T)
Design Notes
The 90 A rating is a headline device-class specification and should not be treated as a guaranteed continuous 90 A application capability without checking the Renesas datasheet for derating, ambient temperature, package thermal resistance, and exposed-pad requirements. Estimated: actual allowable stage current must be calculated from the verified conduction and switching-loss data, board thermal resistance, airflow, and junction-temperature limit. Use substantial copper under the 39-PowerWFQFN and validate with thermal simulation or measurement.
Route the high-current switching loop with the shortest and widest practical copper paths, and place the power-stage, inductor, and high-current capacitors according to the manufacturer reference layout. Keep sensitive current-monitor and temperature-monitor traces away from the switching node and gate-drive traces. The supplied data does not provide the complete pinout or recommended land pattern, so do not release the PCB until the controlled Renesas layout and footprint are used.
The integrated current and temperature monitors can improve observability, but their accuracy depends on clean supply, filtering, grounding, and the controller’s sampling method. Verify whether the monitor outputs are analog, digital, or otherwise application-specific before selecting divider values or firmware thresholds. Preserve the datasheet-recommended filtering and keep the monitor reference or ground connection away from noisy power-current returns.
Do not approve a replacement based only on the similar 90 A classification or package name. The supplied cross-reference results contain conflicting information about ISL99390FRZ-TR5935 versus ISL99390BFRZ-TR5935, including reports that they are not the same part. Confirm exact pin functions, PWM polarity, enable behavior, telemetry levels, fault responses, input-voltage limits, and exposed-pad connections against each manufacturer’s datasheet.
Compliance Information
The supplied verified data does not state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status. These fields must be confirmed from the manufacturer product documentation and applicable distributor declarations.
