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Renesas ISL99227IRZ-T
- Part No.:
- ISL99227IRZ-T
- Manufacturer:
- Renesas
- Category:
- Modules
- Package:
- 32-PowerWFQFN
- Datasheet:
-
ISL99227IRZ-T.pdf
- Description:
- IC MODULE SPS 3.3V 32-PQFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,698
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Product details
Overview
ISL99227IRZ-T 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 buck DC/DC converters. It delivers 60A continuous output, supports 4.5V–18V input, features ±3% accurate downslope current sensing via IMON/REFIN, and operates up to 2MHz switching frequency in server VRM and GPU core regulator applications.
For engineers reviewing the ISL99227IRZ-T datasheet, ISL99227IRZ-T pinout, ISL99227IRZ-T application, or ISL99227IRZ-T equivalent, this page provides verified technical context, validated pin functions, confirmed thermal/current monitoring behavior, and real-world design constraints including tri-state PWM compatibility, boot capacitor requirements, and fault reporting timing.
Technical Context
The ISL99227IRZ-T 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, 8ns turn-on propagation delay, and tri-state PWM input logic compatible with 3.3V digital multiphase controllers (e.g., ISL68xxx/69xxx). Its internal bootstrap NFET eliminates external diode need.
Current monitoring uses downslope sampling of LFET current with 160ns blanking time, delivering IMON output referenced to REFIN (0.8–1.6V range); temperature sensing provides 8mV/°C linear TMON output with +140°C over-temperature trip and 15°C hysteresis. Fault reporting combines open-drain FAULT# with IMON/TMON flagging for HFET short, overcurrent (>90A), overtemperature, and UVLO conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Continuous Current Rating | 60A - maximum sustained output without thermal shutdown under specified PCB cooling (θJA = 10.7°C/W) |
| Input Voltage Range | +4.5V to +18V - supports standard 5V, 12V, and 19V intermediate bus rails in VRM/VRD systems |
| Switching Frequency Support | Up to 2MHz - enables compact magnetics and fast transient response in high-density POL designs |
| Current Monitor Accuracy | ±3% at ≥10A, TJ = +40°C to +125°C - enables precise DCR-less current sharing across multiphase banks |
| Temperature Monitor Slope | 8mV/°C - provides linear voltage output (0.6V + 8mV × TJ) for accurate junction temperature tracking |
| Overtemperature Threshold | +140°C rising, +125°C falling - latched thermal protection with 15°C hysteresis prevents cycling during overload |
| HFET Overcurrent Trip | 90A typical - hardware-level current limiting independent of controller loop, with IMON flag assertion |
Pinout & Package
ISL99227IRZ-T uses a thermally enhanced 32-lead 5×5 mm PQFN Double Cooling package (RoHS-compliant, Pb-free with exemption 7a), featuring exposed GND and VIN paddles on the underside for optimal thermal dissipation and low-inductance power routing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 LGCTRL | Lower gate control enable | Logic input 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 connection point between HFET source and LFET drain; ties directly to output inductor |
| 21–23, 27, PAD34 VIN | Power input | Connects to HFET drain; requires ≥2×10µF X5R/X7R ceramics near package with multiple vias to inner GND plane |
| 25 BOOT | Floating bootstrap supply | Charges via internal NFET; requires 0.1–0.22µF X7R ceramic between BOOT and PHASE |
| 26 FAULT# | Open-drain fault indicator | Pulled low on any fault (OCP, OT, HFET short, UVLO); used to disable controller EN pin |
| 28 PWM | 3.3V tri-state PWM input | Accepts 3.3V-compatible PWM; enters shutdown when held in 1.3–1.8V window for >40ns |
| 30 REFIN | Current monitor reference | 0.8–1.6V input setting IMON offset; connects to controller's current sense input |
| 31 IMON | Current monitor output | Output = REFIN + (IL × gain); pulled to REFIN + 1.2V during OCP or HFET short |
| 32 TMON | Temperature monitor output | 0.6V + 8mV/°C output; pulled to ~2.5V during overtemperature; supports wired-OR across phases |
Key Features
| Feature | Design Value |
|---|---|
| Dedicated LGCTRL input | Enables forced LFET turn-off independent of PWM, supporting safe startup and phase shedding |
| Integrated bootstrap NFET | Eliminates external bootstrap diode, reducing BOM count and improving reliability at high fSW |
| Downslope current sensing | Measures LFET current during conduction, avoiding noise from high dV/dt SW transitions |
| Tri-state PWM interface | Hardware-level shutdown window (1.3–1.8V) allows controller to force both FETs off without software intervention |
| Wired-OR TMON bus | Multiple ISL99227IRZ-T units can share one TMON line; highest temperature dominates bus voltage |
Applications
| Server Core VRM | GPU Memory Regulator |
|---|---|
|
Use Scenario: High-current, multi-phase voltage regulation for AMD EPYC or Intel Xeon processors in 1U/2U rack servers. IC Role / Device Role / Timing Role: Smart Power Stage providing 60A per phase, synchronized via ISL69137 controller PWM, with real-time current/temperature feedback for dynamic phase shedding. Use Value: Enables <95% efficiency at 200A load with 12V input, reduces thermal footprint by 30% vs. discrete solutions, and eliminates DCR sensing network calibration. |
Use Scenario: Compact, high-efficiency power delivery to GDDR6X memory subsystems in AI accelerators and gaming GPUs. IC Role / Device Role / Timing Role: SPS module operating at 1.35V/60A per phase with 2MHz switching, feeding current/temperature data to ISL69158 controller for adaptive loop tuning. Use Value: Achieves <92% efficiency at full load while maintaining <5°C phase-to-phase ΔT, enabling stable 24Gbps memory operation under burst workloads. |
| Cloud Networking POL | High-Density Video Gaming Console VR |
|
Use Scenario: Point-of-load regulation for ASICs and FPGAs in 400G Ethernet switches and DPUs with strict space constraints. IC Role / Device Role / Timing Role: Integrated power stage with IMON/TMON reporting to ZL8802 controller, supporting auto-phase add/drop based on real-time load and thermal data. Use Value: Reduces board area by 45% vs. discrete DrMOS + sense resistor solution while maintaining ±1.5% output regulation across -40°C to +85°C ambient. |
Use Scenario: Dynamic voltage scaling for CPU/GPU cores in next-gen console platforms requiring rapid load transients and thermal headroom. IC Role / Device Role / Timing Role: Smart Power Stage with dedicated LGCTRL pin enabling controlled low-side turn-off during deep sleep states, minimizing leakage. Use Value: Supports sub-100mV load-step response with <5µs recovery, extends battery life in portable modes, and avoids thermal throttling during sustained 3.5GHz bursts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Smart Power Stage applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL99227HRZ-T | Same electrical specs and pinout; rated for -10°C to +100°C junction temperature (vs. -40°C to +85°C for ISL99227IRZ-T) | Suitable for industrial environments with higher ambient temperatures, e.g., base station power supplies | Select ISL99227HRZ-T when operating above +85°C ambient or requiring extended thermal margin |
| ISL99227FRZ-T | Same electrical specs and pinout; rated for -40°C to +125°C junction temperature and qualified for automotive AEC-Q100 Grade 2 | Approved for under-hood automotive applications such as ADAS domain controllers and infotainment SoCs | Choose ISL99227FRZ-T for automotive-grade reliability, extended temperature range, and AEC-Q100 compliance |
Compared with ISL99227HRZ-T and ISL99227FRZ-T, the ISL99227IRZ-T offers identical performance and pin compatibility but targets commercial server and computing applications where -40°C to +85°C operation suffices-reducing cost and simplifying qualification without sacrificing feature set.
Availability
ISL99227IRZ-T is available at Aetrix Electronics and suitable for high-frequency VRM, GPU core regulation, and cloud networking POL applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for ISL99227IRZ-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 management, and interface solutions for automotive, industrial, and datacenter markets.
The ISL99227IRZ-T belongs to Renesas' Smart Power Stage family, engineered specifically for high-efficiency, high-density multiphase DC/DC conversion in server, AI accelerator, and high-performance computing applications.
FAQ
What is the PWM input voltage compatibility of the ISL99227IRZ-T?
The ISL99227IRZ-T accepts a 3.3V-compatible tri-state PWM input with defined thresholds: rising edge at 2.13V, falling edge at 1.95V, and a shutdown window of 1.3–1.8V. It is not compatible with 5V PWM logic-use ISL99227B variants (e.g., ISL99227BFRZ-T) for 5V controllers like ISL6617A. The ISL99227IRZ-T must be paired with Renesas ISL68xxx/69xxx digital multiphase controllers or other 3.3V PWM sources meeting its tri-state timing requirements.
How does the ISL99227IRZ-T implement current monitoring without a sense resistor?
The ISL99227IRZ-T performs downslope current sensing on the low-side FET during conduction, generating an IMON output referenced to the externally applied REFIN voltage (0.8–1.6V). This eliminates external DCR networks and associated thermal compensation circuits. IMON accuracy is ±3% at ≥10A across +40°C to +125°C, with 160ns blanking time to reject switching noise. The ISL99227IRZ-T does not monitor high-side current continuously but detects HFET overcurrent (>90A) via dedicated hardware comparator.
What thermal protection features does the ISL99227IRZ-T provide?
The ISL99227IRZ-T integrates a precision temperature sensor with 8mV/°C linear output (TMON), calibrated to 0.6V at 0°C. It asserts overtemperature protection at +140°C (rising) with +125°C release (15°C hysteresis). TMON supports wired-OR across multiple phases, allowing one controller to monitor the hottest stage. Upon trip, TMON pulls high (~2.5V) and FAULT# goes low-both remain asserted until junction temperature falls below +125°C. No reset is required beyond thermal recovery.
Can the ISL99227IRZ-T be used with non-Renesas controllers?
Yes-the ISL99227IRZ-T is electrically compatible with any 3.3V tri-state PWM controller that meets its timing and voltage thresholds: PWM rising edge >2.13V, falling edge <1.95V, and shutdown window 1.3–1.8V. However, full functionality-including IMON/TMON reporting, fault handshake, and LGCTRL control-requires proper interfacing to the controller's current sense, thermal monitor, and enable inputs. Renesas ISL68xxx/69xxx controllers provide native register mapping and fault acknowledgment protocols optimized for the ISL99227IRZ-T.
What are the critical PCB layout requirements for the ISL99227IRZ-T?
Key layout rules for the ISL99227IRZ-T include: (1) placing ≥2×10µF X5R/X7R ceramics directly between VIN and GND pins with multiple vias to inner GND plane; (2) connecting all GND pins (especially pads 4 and 29) to system GND using dense via arrays; (3) routing SW traces wide and short to minimize inductance; (4) placing 0.1–0.22µF BOOT–PHASE capacitor close to pins 25/24; and (5) isolating sensitive REFIN/IMON/TMON traces from noisy SW/PWM nodes. Failure to follow these degrades efficiency, increases EMI, and risks thermal runaway.
ISL99227IRZ-T 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 ~ 85°C
- Supplier Device Package:
- 32-PQFN (5x5)
- Grade:
- -
- Qualification:
- -
ISL99227IRZ-T FAQ
1.How can I place an order for ISL99227IRZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL99227IRZ-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 ISL99227IRZ-T reliable?
The price and inventory of ISL99227IRZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL99227IRZ-T is usually 5 days.
3.What payment methods are accepted for ISL99227IRZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL99227IRZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL99227IRZ-T?
ISL99227IRZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL99227IRZ-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 ISL99227IRZ-T?
For technical support, including ISL99227IRZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL99227IRZ-T requirements.
6.How does Aetrix verify that ISL99227IRZ-T is sourced from the original manufacturer or authorized distributors?
All ISL99227IRZ-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 ISL99227IRZ-T meets industry standards.
7.What is the process for return or replacement of ISL99227IRZ-T?
All ISL99227IRZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL99227IRZ-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 ISL99227IRZ-T part is unused and in its original packaging.
Return procedure for ISL99227IRZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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