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Renesas ISL99227BFRZ-T7A
- Part No.:
- ISL99227BFRZ-T7A
- Manufacturer:
- Renesas
- Category:
- Modules
- Package:
- 32-PowerWFQFN
- Datasheet:
-
ISL99227BFRZ-T7A.pdf
- Description:
- CONTROLLER SPS MODULE 5V 32PQFN
- Quantity:
- Payment:
- Shipping:
Inventory:220
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Product details
Overview
ISL99227BFRZ-T7A 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 5V tri-state PWM input compatibility, ±3% IMON accuracy, 8mV/°C TMON slope, and 60A DC current capability in a thermally enhanced 32-lead 5×5 PQFN package.
For engineers reviewing the ISL99227BFRZ-T7A datasheet, ISL99227BFRZ-T7A pinout, ISL99227BFRZ-T7A application, or ISL99227BFRZ-T7A equivalent, this page delivers verified technical context, validated pin functions, confirmed thermal/current monitoring behavior, and real-world multiphase controller interoperability with ISL6617A phase doublers and digital VR controllers.
Technical Context
The ISL99227BFRZ-T7A implements a synchronous buck power stage with integrated 3.84mΩ HFET and 0.76mΩ LFET, driven by independent GH/GL logic with shoot-through protection, dead-time control, and bootstrap diode emulation via internal NFET. Its 5V-compatible tri-state PWM interface enables direct handshake with ISL6617A phase doublers.
Current sensing uses downslope sampling of LFET conduction with REFIN-referenced IMON output (±3% accuracy ≥10A), while temperature monitoring provides linear 8mV/°C analog output (TMON) with over-temperature flag at +140°C. Fault reporting integrates open-drain FAULT# with latched HFET short detection and UVLO on VCC/VIN.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | +4.5V to +18V - supports standard server/microprocessor input rails including 5V, 12V, and 19V intermediate bus architectures. |
| Continuous Current Rating | 60A DC - validated continuous output capability under thermal limits with θJA = 10.7°C/W on evaluation board. |
| PWM Input Compatibility | 5.0V tri-state logic - matches ISL6617A phase doubler outputs; shutdown window 1.6–2.8V prevents unintended switching during control transitions. |
| Current Monitor Accuracy | ±3% (≥10A, TJ = +40°C to +125°C) - enables precise closed-loop current sharing across multiphase VRMs without external DCR networks. |
| Temperature Monitor Slope | 8mV/°C - linear analog output referenced to 0.6V at 0°C; allows system-level thermal mapping and hot-spot detection in multi-SPS configurations. |
| Fault Reporting | Open-drain FAULT# - asserts low on overcurrent, overtemperature, HFET short, or VCC/VIN UVLO; compatible with enable-input shutdown of ISL68/69xxx controllers. |
| Switching Frequency Support | Up to 2MHz - enables high-density POL designs with small inductors and fast transient response in CPU/GPU core regulators. |
Pinout & Package
ISL99227BFRZ-T7A is housed in a RoHS-compliant 32-lead 5×5 mm PQFN Double Cooling package (PKG DWG # L32.5x5V) with exposed thermal pad on underside. The package features dual-side cooling via top copper paddle and bottom GND/VIN thermal vias, enabling θJC = 4°C/W and θJB = 5.2°C/W performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 LGCTRL | Lower gate control input | Logic signal forcing GL low (LFET off); must be driven or tied high - never left floating. |
| 2 VCC | +5V logic bias supply | Supplies internal logic; requires local 1µF X7R ceramic decoupling to GND. |
| 3 PVCC | +5V gate drive bias supply | Drives GH/GL outputs; requires local 1µF X7R ceramic decoupling to GND. |
| 9–16, 21–23, 27 SW | Switch node | High-current junction between HFET source and LFET drain; connects directly to output inductor. |
| 24 PHASE | Boot capacitor return | Internally connected to SW; no external routing needed - simplifies layout. |
| 25 BOOT | Floating bootstrap supply | Drives HFET gate; requires 0.1–0.22µF X7R ceramic cap across BOOT–PHASE. |
| 26 FAULT# | Open-drain fault indicator | Pulled low on any fault; used to disable controller EN pin or trigger system alert. |
| 28 PWM | 5V tri-state PWM input | Accepts 5V logic from ISL6617A; enters shutdown mode when held within 1.6–2.8V window. |
| 30 REFIN | IMON reference voltage input | 0.8–1.6V external reference; sets IMON offset and gain; requires 0.1µF local decoupling. |
| 31 IMON | Current monitor output | REFIN-referenced analog output; pulled to REFIN + 1.2V during HFET overcurrent or short. |
| 32 TMON | Temperature monitor output | Linear 0.6V + 8mV/°C output; pulled to 2.5V during overtemperature (>+140°C). |
Key Features
| Feature | Design Value |
|---|---|
| Dedicated 5V PWM interface | Enables plug-in compatibility with ISL6617A phase doublers and eliminates level-shifting circuitry in 5V-control VRM designs. |
| Integrated downslope current sensing | Eliminates need for external DCR sense network and associated thermal compensation components, reducing BOM count and layout complexity. |
| ±3% IMON accuracy over temperature | Supports accurate per-phase current balancing in 6+ phase systems, improving load transient response and thermal derating margin. |
| 8mV/°C linear TMON output | Allows daisy-chaining of multiple SPS units on shared TMON bus for system-level hot-spot identification without additional ADC resources. |
| Latched HFET short protection | Detects >100mV SW voltage during LFET conduction and forces GH low until VCC POR reset - prevents catastrophic failure during MOSFET avalanche. |
| Bootstrap diode emulation | Internal NFET replaces discrete bootstrap diode, reducing component count and improving reliability in high-frequency (>1MHz) operation. |
Applications
| Core Voltage Regulation for CPUs | GPU Power Delivery in Gaming Consoles |
|---|---|
|
Use Scenario: Delivering tightly regulated 0.8–1.35V core power to modern x86 and ARM processors in servers and workstations. IC Role / Device Role / Timing Role: Smart Power Stage providing synchronized switching, real-time current/temperature telemetry, and fault signaling to ISL69158 or ISL68228 controllers. Use Value: Enables dynamic phase shedding and adaptive voltage scaling using IMON/TMON feedback - improving efficiency at light loads while maintaining <±1% regulation accuracy. |
Use Scenario: High-density, high-transient POL supply for discrete GPUs in video gaming consoles requiring rapid load steps up to 200A/µs. IC Role / Device Role / Timing Role: Multiphase power stage with 2MHz switching support and sub-25ns propagation delays, synchronized to ISL6617A phase doublers. Use Value: Delivers >95% peak efficiency at 50A with minimal PCB footprint - critical for thermally constrained handheld and console platforms. |
| Memory Regulators in Cloud Servers | VRM for AI Accelerators |
|
Use Scenario: DDR5 and LPDDR5 memory rail regulation (1.1V/1.8V) in hyperscale data center servers with strict power integrity requirements. IC Role / Device Role / Timing Role: Current-sensing SPS feeding IMON data to ISL68224 controllers for per-rail current balancing and thermal throttling coordination. Use Value: Eliminates DCR-based sensing drift over temperature - ensuring stable memory timing margins across -40°C to +125°C operating range. |
Use Scenario: High-current, low-voltage (0.75–0.85V) supply for AI inference accelerators with burst-mode workloads and aggressive thermal limits. IC Role / Device Role / Timing Role: Thermally robust SPS with double-cooling PQFN package and latched OT protection, interfacing with ZL8802 digital controllers. Use Value: Provides real-time junction temperature reporting via TMON bus - enabling predictive thermal management before silicon throttling occurs. |
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, IMON/TMON accuracy, and 5×5 PQFN package. | Designed for ISL68xxx/69xxx digital multiphase controllers - not compatible with ISL6617A 5V PWM outputs. | Select ISL99227FRZ-T only when paired with Renesas 3.3V-output controllers; verify PWM logic levels before substitution. |
| ISL99135B | 35A rating, 24-lead 3.5×5 QFN, no IMON/TMON monitoring, no dedicated LGCTRL pin. | Targeted at cost-sensitive analog/hybrid controllers (ISL63xx, ISL68201); lacks telemetry required for full digital VRM optimization. | Choose ISL99135B only for lower-current, non-telemetry applications where BOM cost outweighs closed-loop performance benefits. |
Compared with ISL99227BFRZ-T7A, ISL99227FRZ-T offers identical thermal/current monitoring but requires 3.3V PWM infrastructure, while ISL99135B sacrifices telemetry and current capacity for smaller size and lower cost - making ISL99227BFRZ-T7A the sole option for 5V PWM–based high-accuracy, high-current multiphase VRMs.
Availability
ISL99227BFRZ-T7A is available at Aetrix Electronics and suitable for high-density VRM, GPU power delivery, DDR5 memory regulation, and AI accelerator supply applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for ISL99227BFRZ-T7A 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 interface solutions for automotive, industrial, and datacenter applications.
The ISL99227BFRZ-T7A belongs to Renesas' Smart Power Stage family, engineered specifically for high-efficiency, high-frequency multiphase DC/DC conversion in CPU/GPU/core voltage regulation with integrated telemetry and fault resilience.
FAQ
What is the PWM input voltage compatibility of the ISL99227BFRZ-T7A?
The ISL99227BFRZ-T7A supports a 5.0V-compatible tri-state PWM input, matching the output logic levels of the ISL6617A phase doubler. Its shutdown window is defined between 1.6V and 2.8V - holding PWM within this range forces both FETs off. This distinguishes it from the 3.3V-compatible ISL99227 variants and ensures reliable handshake in 5V-control VRM architectures.
How does the ISL99227BFRZ-T7A implement current monitoring without external sense resistors?
The ISL99227BFRZ-T7A performs downslope current sensing on the low-side FET during conduction, generating an IMON output referenced to the externally supplied REFIN voltage. With ±3% accuracy across +40°C to +125°C and a 1.2V fault flag, ISL99227BFRZ-T7A eliminates DCR networks and thermal compensation circuits - delivering precise per-phase current data directly to compatible controllers like ISL69158.
What thermal protection features does the ISL99227BFRZ-T7A provide?
The ISL99227BFRZ-T7A integrates a linear temperature sensor with 8mV/°C slope and 0.6V offset, outputting analog voltage on TMON. It triggers overtemperature protection at +140°C (rising threshold), pulling TMON to 2.5V and FAULT# low. Hysteresis of 15°C ensures clean recovery at +125°C. Multiple ISL99227BFRZ-T7A units can share a TMON bus for system-level hot-spot detection.
Can the ISL99227BFRZ-T7A be used with controllers other than Renesas devices?
Yes - the ISL99227BFRZ-T7A is interoperable with any controller providing 5V tri-state PWM signals and supporting analog IMON/TMON inputs. While optimized for Renesas ISL6617A doublers and ISL68/69xxx controllers, its standardized interfaces (REFIN-referenced IMON, 8mV/°C TMON, open-drain FAULT#) allow integration with third-party digital VRMs that accept these telemetry signals and fault protocols.
What is the significance of the "Double Cooling" feature in the ISL99227BFRZ-T7A package?
The ISL99227BFRZ-T7A's 32-lead 5×5 PQFN package incorporates Double Cooling architecture: thermal energy is dissipated through both the top copper paddle (via heatsink contact) and the bottom-side GND/VIN thermal vias into the PCB plane. This achieves θJC = 4°C/W and θJB = 5.2°C/W - enabling 60A operation in compact, high-power-density VRMs where traditional single-sided packages would exceed thermal limits.
ISL99227BFRZ-T7A Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 32-PowerWFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Protocol:
- -
- Function:
- Controller
- Interface:
- PWM
- Standards:
- -
- Voltage - Supply:
- 4.5V ~ 18V
- Current - Supply:
- 4.75 mA
- Operating Temperature:
- -40°C ~ 125°C
- Supplier Device Package:
- 32-PQFN (5x5)
- Grade:
- -
- Qualification:
- -
ISL99227BFRZ-T7A FAQ
1.How can I place an order for ISL99227BFRZ-T7A through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL99227BFRZ-T7A 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-T7A reliable?
The price and inventory of ISL99227BFRZ-T7A are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL99227BFRZ-T7A is usually 5 days.
3.What payment methods are accepted for ISL99227BFRZ-T7A?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL99227BFRZ-T7A transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL99227BFRZ-T7A?
ISL99227BFRZ-T7A orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL99227BFRZ-T7A 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-T7A?
For technical support, including ISL99227BFRZ-T7A datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL99227BFRZ-T7A requirements.
6.How does Aetrix verify that ISL99227BFRZ-T7A is sourced from the original manufacturer or authorized distributors?
All ISL99227BFRZ-T7A 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-T7A meets industry standards.
7.What is the process for return or replacement of ISL99227BFRZ-T7A?
All ISL99227BFRZ-T7A units undergo pre-shipment inspection (PSI). If there is an issue with ISL99227BFRZ-T7A, 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-T7A part is unused and in its original packaging.
Return procedure for ISL99227BFRZ-T7A:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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