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Renesas ISL99227BFRZ-TS2792
- Part No.:
- ISL99227BFRZ-TS2792
- Manufacturer:
- Renesas
- Category:
- Full Half-Bridge (H Bridge) Drivers
- Package:
- 32-PowerWFQFN
- Datasheet:
-
ISL99227BFRZ-TS2792.pdf
- Description:
- ISL99227BFRZ-TS2792
- Quantity:
- Payment:
- Shipping:
Inventory:3,201
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Product details
Overview
ISL99227BFRZ-TS2792 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 - designed for multiphase VRMs with 5.0V tri-state PWM input compatibility, 60A DC current rating, ±3% IMON accuracy, and 8mV/°C TMON slope. It enables high-density core/memory regulators in server and cloud computing power delivery.
For engineers reviewing the ISL99227BFRZ-TS2792 datasheet, ISL99227BFRZ-TS2792 pinout, ISL99227BFRZ-TS2792 application, or ISL99227BFRZ-TS2792 equivalent, key selection criteria include 5V PWM interface compatibility with ISL6617A phase doublers, integrated downslope current sensing eliminating DCR networks, thermal monitoring with OT flag, and fault reporting via open-drain FAULT# pin.
Technical Context
The ISL99227BFRZ-TS2792 implements a synchronous buck power stage with integrated 3.84mΩ HFET and 0.76mΩ LFET, driven by optimized GH/GL gate drivers featuring shoot-through protection, programmable dead time, and bootstrap diode emulation via internal NFET. Its tri-state PWM input (5.0V compatible) interfaces directly with Renesas ISL6617A phase doublers.
Current sensing uses downslope sampling of LFET conduction with 160ns blanking time and ±3% gain accuracy across –40°C to +125°C; temperature monitoring delivers linear 8mV/°C output referenced to 0.6V offset, with over-temperature flag at +140°C and 15°C hysteresis. Fault reporting combines open-drain FAULT# with dedicated IMON and TMON flags.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | +4.5V to +18V - supports standard 5V, 12V, and 15V intermediate bus architectures without external level shifting. |
| Continuous Current Rating | 60A DC - enables single-phase operation in high-power CPU/GPU VRMs or multi-phase scaling with reduced phase count. |
| PWM Input Compatibility | 5.0V tri-state - interoperates with ISL6617A phase doubler and digital hybrid controllers requiring 5V logic-level PWM. |
| 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 with 0.6V offset - allows direct junction temperature readback and system-level thermal margining using analog voltage measurement. |
| Thermal Protection Threshold | +140°C rising / +125°C falling - provides hysteresis-based over-temperature shutdown with automatic recovery after cooling. |
| Package Thermal Resistance | θJA = 9.3°C/W (400 LFM), θJC = 4°C/W - enables high-power density operation with minimal heatsinking in compact server PCB layouts. |
Pinout & Package
ISL99227BFRZ-TS2792 uses a RoHS-compliant 32-lead 5×5 mm PQFN Double Cooling package with exposed thermal pad (PKG DWG L32.5x5V), supporting dual-side thermal extraction via top and bottom copper planes.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 LGCTRL | Lower gate control input | Forces LFET off when pulled low; otherwise obeys PWM timing - enables independent low-side disable for light-load efficiency optimization. |
| 2 VCC | +5V logic bias supply | Supplies internal logic and POR circuitry; requires local 1µF X7R ceramic decoupling to GND for stable startup and noise immunity. |
| 3 PVCC | +5V gate drive bias supply | Drives GH/GL outputs; requires separate 1µF X7R decoupling to minimize gate loop inductance and switching losses. |
| 26 FAULT# | Open-drain fault reporting output | Asserts low on any fault (OCP, OT, HFET short, UVLO); can directly disable controller EN pin or trigger system-level alert. |
| 28 PWM | 5.0V tri-state PWM input | Accepts 5V logic-level PWM with defined shutdown window (1.6–2.8V); forces both FETs off when held in tri-state, enabling safe controller handshake. |
| 30 REFIN | External reference input for IMON | Sets zero-current baseline for current monitor; must be 0.8–1.6V and decoupled with 0.1µF capacitor to ensure IMON accuracy. |
| 31 IMON | Current monitor output | Outputs REFIN + (IL × gain); pulled to REFIN + 1.2V during HFET overcurrent - provides fast, analog current feedback to controller. |
| 32 TMON | Temperature monitor output | Delivers linear 0.6V + 8mV/°C signal; multiple TMON pins can be wired in parallel for worst-case thermal monitoring across multiphase banks. |
Key Features
| Feature | Design Value |
|---|---|
| Dedicated LFET control (LGCTRL) | Enables independent low-side FET disable for discontinuous conduction mode (DCM), improving light-load efficiency without controller firmware changes. |
| Integrated HFET short detection | Monitors SW node voltage during LFET conduction; triggers latched fault if >100mV - detects catastrophic failure before thermal runaway occurs. |
| Bootstrap diode emulation | Uses internal NFET instead of external Schottky, reducing BOM count and improving reliability while maintaining <0.09V forward drop at 5mA. |
| Downslope current sensing | Measures LFET current during conduction period only, avoiding noise from switching transitions - yields accurate IL waveform reconstruction without DCR or sense resistor. |
| Comprehensive fault protection | Covers HFET overcurrent (90A trip), over-temperature (+140°C), VCC/VIN UVLO, and HFET short - all reported via FAULT#, IMON, and TMON for layered system response. |
Applications
| Core Regulator for High-Performance CPUs | Graphics VRM in Gaming Consoles |
|---|---|
Use Scenario: Powers Intel/AMD server CPUs requiring tight voltage regulation (<±1%), fast transient response, and dynamic phase shedding. IC Role / Device Role / Timing Role: SPS module providing power conversion, real-time current/temperature telemetry, and fault signaling to ISL68xxx/69xxx digital controllers. Use Value: Enables precise per-phase current balancing and thermal derating via IMON/TMON feedback, improving VRM efficiency by up to 2.5% at 40A load vs. discrete solutions. |
Use Scenario: Supplies GPU core voltage in next-gen video game consoles with aggressive power cycling and thermal constraints. IC Role / Device Role / Timing Role: High-frequency buck stage operating at up to 2MHz, delivering 60A with integrated current sensing and OT protection. Use Value: Eliminates external current-sense resistors and thermal sensors, reducing PCB area by 18mm² per phase and simplifying layout for EMI-sensitive RF sections. |
| Memory Regulator in Cloud Servers | POL DC/DC for Networking ASICs |
Use Scenario: Provides DDR5 memory VDDQ/VDD2 supply in hyperscale data center servers with strict ripple and transient requirements. IC Role / Device Role / Timing Role: Multiphase SPS stage synchronized with ISL6617A phase doubler to double effective phase count and reduce output ripple. Use Value: Delivers ±3% current monitor accuracy across –40°C to +125°C, enabling closed-loop current sharing that maintains <5mV load-line deviation under 100A step loads. |
Use Scenario: Powers high-speed SerDes and packet processing ASICs in 5G baseband units requiring ultra-low noise and rapid fault containment. IC Role / Device Role / Timing Role: Point-of-load regulator with fast fault reporting (FAULT# assertion <1µs after OCP) and latch-free recovery. Use Value: Reduces system downtime by detecting and isolating faults within one switching cycle, preventing cascading failures in mission-critical telecom infrastructure. |
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, same package and IMON/TMON features | Designed for ISL68xxx/69xxx digital multiphase controllers - not compatible with ISL6617A 5V PWM output | Select ISL99227FRZ-T only when paired with Renesas digital controllers using 3.3V PWM; verify controller PWM voltage before substitution. |
| ISL99135B | 35A rating, 24-lead 3.5×5 QFN, no IMON/TMON, no LGCTRL, 5V PWM compatible | Targeted at cost-sensitive analog/hybrid controllers (e.g., ISL633x) without telemetry requirements | Choose ISL99135B only for lower-current, non-telemetry applications where board space and BOM cost outweigh performance needs. |
Compared with ISL99227BFRZ-TS2792, ISL99227FRZ-T offers identical telemetry and protection but requires 3.3V PWM controllers, while ISL99135B sacrifices current rating, monitoring, and control flexibility for lower cost and smaller footprint - neither is pin-compatible nor functionally interchangeable without redesign.
Availability
ISL99227BFRZ-TS2792 is available at Aetrix Electronics and suitable for high-density VRMs, server CPU core regulators, and graphics power delivery systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for ISL99227BFRZ-TS2792 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-TS2792 belongs to Renesas' Smart Power Stage family, engineered specifically for high-efficiency, high-current multiphase DC/DC conversion in AI accelerators, cloud servers, and gaming platforms demanding integrated telemetry and robust fault handling.
FAQ
What is the PWM input voltage compatibility of the ISL99227BFRZ-TS2792?
The ISL99227BFRZ-TS2792 accepts a 5.0V tri-state PWM input, making it compatible with Renesas ISL6617A phase doublers and other 5V PWM controllers. Its input thresholds are optimized for 5V logic: rising threshold at 3.24V and falling threshold at 3.02V, with a defined shutdown window between 1.6V and 2.8V. This differs from the 3.3V-compatible ISL99227 series, and mixing them with mismatched controllers will cause improper gate drive behavior. Always verify controller PWM output voltage before integration.
How does the ISL99227BFRZ-TS2792 implement current monitoring without a sense resistor?
The ISL99227BFRZ-TS2792 uses downslope current sensing on the low-side FET during its conduction period, sampling IL through the LFET's rDS(ON) and outputting a proportional voltage on the IMON pin relative to REFIN. With ±3% gain accuracy across –40°C to +125°C and 160ns blanking time, it eliminates external DCR networks and associated thermal compensation circuits. The IMON signal is valid after the first GL transition post-POR and remains accurate up to 60A, enabling precise per-phase current feedback to digital controllers like ISL68xxx/69xxx.
What fault conditions trigger the FAULT# pin on the ISL99227BFRZ-TS2792?
The FAULT# pin on the ISL99227BFRZ-TS2792 is an open-drain output pulled low for any of the following: HFET overcurrent (>90A), over-temperature (>+140°C), HFET short (SW >100mV during LFET on), or VCC/VIN undervoltage lockout. It also asserts during Power-On Reset until both supplies stabilize above their POR thresholds. This single-pin reporting simplifies system-level fault detection and allows direct connection to controller enable inputs or host microcontroller GPIOs for coordinated shutdown sequences.
Can multiple ISL99227BFRZ-TS2792 devices share a common TMON bus?
Yes - the TMON pin on each ISL99227BFRZ-TS2792 is designed for wired-OR connection. When multiple TMON outputs are tied together, the highest voltage (representing the highest junction temperature among all stages) appears on the shared bus. This enables centralized thermal monitoring in multiphase VRMs without additional multiplexing circuitry. Total capacitance on the bus must remain ≤470pF; adding a series resistor allows higher capacitive loads, such as 1kΩ with 100nF.
What is the thermal performance of the ISL99227BFRZ-TS2792 in a typical server PCB layout?
In a standard SPS evaluation board with 400 LFM airflow, the ISL99227BFRZ-TS2792 achieves θJA = 9.3°C/W and θJC = 4°C/W. Its 5×5 mm PQFN Double Cooling package supports dual-side thermal extraction: top-side vias to inner copper layers and bottom-side thermal pad soldered to large GND planes. At 60A continuous load, junction temperature rise is ~56°C above ambient - well within the +125°C max operating limit. Layout best practices include ≥8 vias under the GND pads and ≥2×10µF X5R/X7R ceramics on VIN.
ISL99227BFRZ-TS2792 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 32-PowerWFQFN
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Output Configuration:
- Half Bridge
- Applications:
- DC-DC Converters, Synchronous Buck Converter
- Interface:
- PWM
- Load Type:
- Inductive, Capacitive
- Technology:
- MOSFET (Metal Oxide)
- Rds On (Typ):
- 16Ohm
- Current - Output / Channel:
- 60A
- 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, Status Flag
- Fault Protection:
- Current Limiting, Over Temperature, Shoot-Through, UVLO
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-PQFN (5x5)
ISL99227BFRZ-TS2792 FAQ
1.How can I place an order for ISL99227BFRZ-TS2792 through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL99227BFRZ-TS2792 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-TS2792 reliable?
The price and inventory of ISL99227BFRZ-TS2792 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL99227BFRZ-TS2792 is usually 5 days.
3.What payment methods are accepted for ISL99227BFRZ-TS2792?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL99227BFRZ-TS2792 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL99227BFRZ-TS2792?
ISL99227BFRZ-TS2792 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL99227BFRZ-TS2792 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-TS2792?
For technical support, including ISL99227BFRZ-TS2792 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL99227BFRZ-TS2792 requirements.
6.How does Aetrix verify that ISL99227BFRZ-TS2792 is sourced from the original manufacturer or authorized distributors?
All ISL99227BFRZ-TS2792 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-TS2792 meets industry standards.
7.What is the process for return or replacement of ISL99227BFRZ-TS2792?
All ISL99227BFRZ-TS2792 units undergo pre-shipment inspection (PSI). If there is an issue with ISL99227BFRZ-TS2792, 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-TS2792 part is unused and in its original packaging.
Return procedure for ISL99227BFRZ-TS2792:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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