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Renesas ISL99227BFRZ-TR5784
- Part No.:
- ISL99227BFRZ-TR5784
- Manufacturer:
- Renesas
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- Modules
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ISL99227BFRZ-TR5784.pdf
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Product details
Overview
ISL99227BFRZ-TR5784 from Renesas Electronics is a Smart Power Stage (SPS) module integrating high-side and low-side MOSFETs, gate drivers, current/temperature monitors, and fault protection for multiphase VRMs. It delivers 60A DC output, supports 4.5V–18V input, features 5.0V-compatible tri-state PWM input, and operates up to 2MHz switching frequency in server CPU core voltage regulation.
For engineers reviewing the ISL99227BFRZ-TR5784 datasheet, ISL99227BFRZ-TR5784 pinout, ISL99227BFRZ-TR5784 application, or ISL99227BFRZ-TR5784 equivalent, key selection considerations include its 5V PWM compatibility with ISL6617A phase doublers, ±3% IMON accuracy, 8mV/°C TMON slope, integrated HFET short detection, and 32-pin 5×5 PQFN Double Cooling package with θJC = 4°C/W.
Technical Context
The ISL99227BFRZ-TR5784 implements a synchronous buck power stage with integrated 3.84mΩ high-side and 0.76mΩ low-side MOSFETs, driven by optimized GH/GL gate drivers featuring shoot-through protection and programmable dead time. Its tri-state PWM interface enables robust fault-handling coordination with Renesas digital controllers like ISL6617A.
Current sensing uses downslope sampling of LFET current with 160ns blanking, referenced to REFIN (0.8–1.6V), yielding ±3% accuracy across –40°C to +125°C. Temperature monitoring provides linear 8mV/°C output (0.6V + 8mV·TJ) with over-temperature flag at +140°C and 15°C hysteresis, supporting multi-phase thermal bus sharing via wired-OR TMON connection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | +4.5V to +18V - supports standard 5V, 12V, and 15V intermediate bus architectures |
| Continuous Output Current | 60A - rated for high-density CPU/GPU core VRM applications without derating at +125°C junction |
| PWM Input Compatibility | 5.0V tri-state - matches ISL6617A phase doubler logic levels and enables safe shutdown during controller faults |
| Current Monitor Accuracy | ±3% (≥10A, TJ = +40°C to +125°C) - eliminates need for external DCR sensing network and thermal compensation circuitry |
| Temperature Monitor Slope | 8mV/°C - enables precise junction temperature tracking with 0.6V offset; TMON valid 125µs after VCC POR |
| Thermal Resistance (Junction-to-Case) | θJC = 4°C/W - achieved via Double Cooling 5×5 PQFN package with exposed thermal pad and dual-side copper vias |
| Switching Frequency Support | Up to 2MHz - enables compact magnetics and high transient response in POL converters |
Pinout & Package
ISL99227BFRZ-TR5784 uses a RoHS-compliant 32-lead 5mm × 5mm PQFN Double Cooling package (PKG DWG L32.5x5V) with exposed thermal pad on underside and dual-side GND/VIN paddle connections for optimal thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| LGCTRL | Lower gate control input | Logic signal forcing GL low (LFET off); must not float - used for active current limiting or sequencing |
| PWM | 5V tri-state gate drive command | Accepts 5V logic; enters shutdown window (1.6–2.8V) to force both FETs off - critical for ISL6617A handshake |
| IMON / REFIN | Current monitor output / reference input | IMON = REFIN + 1.2V during OCP; REFIN sets zero-current baseline (0.8–1.6V) - connects directly to controller's current sense ADC |
| TMON | Temperature monitor output | Wired-OR capable; outputs 0.6V + 8mV·TJ - highest-voltage TMON among paralleled SPS units dominates bus |
| FAULT# | Open-drain fault reporting | Pulled low on UVLO, OCP, OT, or HFET short - used to disable controller EN pin or trigger system-level alert |
| VIN / SW / PHASE / BOOT | Power path terminals | VIN (pins 21,22,23,27) feeds HFET drain; SW (pins 9–16) connects to inductor; PHASE (pin 24) returns boot capacitor - defines high-current loop |
Key Features
| Feature | Design Value |
|---|---|
| Integrated HFET/LFET pair | rDS(ON) = 3.84mΩ / 0.76mΩ - enables >95% efficiency at 60A/1.2V with minimal conduction loss |
| Dedicated LFET control (LGCTRL) | Independent logic-level input forces LFET off regardless of PWM state - supports active current limiting and sequencing |
| HFET short detection | Monitors SW node >100mV during GL high; latches fault until VCC POR reset - prevents catastrophic failure under shoot-through |
| Downslope current sensing | Samples LFET current after PWM falling edge with 160ns blanking - avoids switching noise, enables accurate DCR-free current reconstruction |
| Comprehensive fault protection | Covers VCC/VIN UVLO, over-temperature (+140°C), HFET overcurrent (90A typ), and HFET short - all reported via FAULT# and IMON/TMON |
Applications
| Server CPU Core VRM | GPU Memory VR |
|---|---|
Use Scenario: High-current, fast-transient voltage regulation for dual-socket Xeon Scalable processors in cloud data centers. IC Role / Device Role / Timing Role: Smart Power Stage delivering 60A per phase with real-time current/temperature feedback to ISL69xxx controllers. Use Value: Enables 6-phase interleaving with <100ns current-sharing skew and thermal-aware phase shedding via TMON bus. | Use Scenario: Compact, high-efficiency point-of-load regulator for GDDR6X memory subsystems in AI accelerators. IC Role / Device Role / Timing Role: Integrated buck stage with 2MHz support and downslope current sensing for tight regulation under dynamic GPU workloads. Use Value: Eliminates external current-sense resistors and DCR compensation networks, reducing BOM count and layout area by 35%. |
| Networking ASIC Supply | High-Density POL Converter |
Use Scenario: Multi-rail power delivery for 400G/800G switch fabric ASICs requiring independent core/I/O/memory rails. IC Role / Device Role / Timing Role: SPS module synchronized with ISL6617A phase doubler to double effective phase count without adding controller pins. Use Value: Achieves <1% load-step deviation at 50A/µs using tri-state PWM coordination and IMON-based adaptive loop compensation. | Use Scenario: Space-constrained board-level DC/DC conversion for FPGA I/O banks and SerDes supplies in telecom base stations. IC Role / Device Role / Timing Role: Self-contained power stage with integrated thermal monitoring and fault reporting for unattended operation. Use Value: Reduces thermal runaway risk via 15°C hysteresis OT protection and enables predictive maintenance through TMON trend analysis. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Smart Power Stage applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL99227FRZ-T | 3.3V PWM input; identical 60A rating, -40°C to +125°C temp range, same package | Designed for ISL68xxx/69xxx digital multiphase controllers - not compatible with ISL6617A 5V PWM output | Select ISL99227FRZ-T only when paired with Renesas 3.3V PWM controllers; verify PWM logic level alignment before substitution. |
| ISL99135BFRZ-T | 35A rating, 24-pin 3.5×5 QFN, no IMON/TMON, no LGCTRL, 5V PWM compatible | Targeted at cost-sensitive analog/hybrid controllers (e.g., ISL633x); lacks current/temp monitoring and advanced fault reporting | Choose ISL99135BFRZ-T where lower current and simplified monitoring suffice; not suitable for closed-loop thermal/current control systems. |
Compared with ISL99227BFRZ-TR5784, ISL99227FRZ-T offers identical thermal/current specs but requires 3.3V PWM infrastructure, while ISL99135BFRZ-T reduces cost and size at the expense of monitoring fidelity and fault granularity - making ISL99227BFRZ-TR5784 optimal for high-reliability, digitally controlled VRMs demanding full telemetry.
Availability
ISL99227BFRZ-TR5784 is available at Aetrix Electronics and suitable for server CPU core VRMs, GPU memory regulators, and high-density POL converters requiring stable component supply, long-term lifecycle assurance, and traceable sourcing for industrial and datacenter deployments.
Supply support for ISL99227BFRZ-TR5784 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 management, and SoC solutions for automotive, industrial, and datacenter applications.
The ISL99227BFRZ-TR5784 belongs to Renesas' Smart Power Stage family, engineered specifically for high-frequency, high-efficiency multiphase DC/DC conversion in next-generation computing platforms with stringent thermal and telemetry requirements.
FAQ
What is the PWM input voltage compatibility of the ISL99227BFRZ-TR5784?
The ISL99227BFRZ-TR5784 features a 5.0V-compatible tri-state PWM input, designed specifically for interoperability with Renesas ISL6617A phase doublers and other 5V PWM controllers. Its tri-state window (1.6–2.8V) ensures reliable forced-shutdown behavior during fault conditions, unlike the 3.3V-compatible ISL99227 variants. This 5V logic interface is confirmed in the Ordering Information table and Electrical Specifications section of FN8684 Rev.3.01.
Does the ISL99227BFRZ-TR5784 support current monitoring without external components?
Yes, the ISL99227BFRZ-TR5784 integrates downslope current sensing with ±3% accuracy across –40°C to +125°C, eliminating the need for external DCR networks or sense resistors. The IMON output is referenced to the REFIN pin (0.8–1.6V), and the internal sensing path includes 160ns blanking to reject switching noise. This capability is validated in the Electrical Specifications table and Operation section of FN8684 Rev.3.01, enabling direct connection to controller current-sense ADC inputs.
How does thermal monitoring work on the ISL99227BFRZ-TR5784?
The ISL99227BFRZ-TR5784 provides linear temperature monitoring via the TMON pin, outputting 0.6V + 8mV/°C - yielding 0.80V at +25°C and pulling high to 2.5V at +140°C over-temperature trip. Multiple ISL99227BFRZ-TR5784 units can share a common TMON bus via wired-OR connection, with the highest temperature dominating the bus voltage. This functionality is specified in the Electrical Specifications and detailed in Figure 14 of FN8684 Rev.3.01.
What fault protections are integrated into the ISL99227BFRZ-TR5784?
The ISL99227BFRZ-TR5784 integrates five fault protections: VCC/VIN undervoltage lockout (UVLO), over-temperature (+140°C), HFET overcurrent (90A typical), HFET short detection (SW >100mV during GL high), and power-on reset (POR) supervision. All faults assert the open-drain FAULT# pin low and report condition-specific flags on IMON (OCP/short) or TMON (OT). These are documented in the Features list, Electrical Specifications, and Operation sections of FN8684 Rev.3.01.
What is the package type and thermal performance of the ISL99227BFRZ-TR5784?
The ISL99227BFRZ-TR5784 uses a 32-lead 5mm × 5mm PQFN Double Cooling package (PKG DWG L32.5x5V) with dual-side thermal vias and exposed paddle. It achieves θJC = 4°C/W and θJA = 10.7°C/W (0 LFM) per the Thermal Information table in FN8684 Rev.3.01. This package enables high-power density operation up to 60A while maintaining junction temperature within limits under typical server PCB layouts with adequate copper pour and via count.
ISL99227BFRZ-TR5784 Specifications
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- Renesas
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- Bulk
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ISL99227BFRZ-TR5784 FAQ
1.How can I place an order for ISL99227BFRZ-TR5784 through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL99227BFRZ-TR5784 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 ISL99227BFRZ-TR5784 reliable?
The price and inventory of ISL99227BFRZ-TR5784 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL99227BFRZ-TR5784 is usually 5 days.
3.What payment methods are accepted for ISL99227BFRZ-TR5784?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL99227BFRZ-TR5784 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL99227BFRZ-TR5784?
ISL99227BFRZ-TR5784 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL99227BFRZ-TR5784 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 ISL99227BFRZ-TR5784?
For technical support, including ISL99227BFRZ-TR5784 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL99227BFRZ-TR5784 requirements.
6.How does Aetrix verify that ISL99227BFRZ-TR5784 is sourced from the original manufacturer or authorized distributors?
All ISL99227BFRZ-TR5784 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 ISL99227BFRZ-TR5784 meets industry standards.
7.What is the process for return or replacement of ISL99227BFRZ-TR5784?
All ISL99227BFRZ-TR5784 units undergo pre-shipment inspection (PSI). If there is an issue with ISL99227BFRZ-TR5784, 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 ISL99227BFRZ-TR5784 part is unused and in its original packaging.
Return procedure for ISL99227BFRZ-TR5784:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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UMFT234XF
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