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Renesas ISL95210HRZ
- Part No.:
- ISL95210HRZ
- Manufacturer:
- Renesas
- Package:
- 32-VFQFN Exposed Pad
- Datasheet:
-
ISL95210HRZ.pdf
- Description:
- IC REG BUCK PROG 10A 32QFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,458
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Product details
Overview
ISL95210HRZ from Renesas (formerly Intersil) is a high-efficiency, integrated 10A synchronous buck regulator in a 32-lead 6mm×4mm QFN package. It operates from 2.97V–5.5V input, delivers ±0.6% output voltage accuracy over –10°C to +100°C, supports pin-selectable 0.6V–1.8V DAC outputs, and achieves up to 95% efficiency with R4™ hysteretic control-enabling compact point-of-load power for notebook CPU core rails.
For engineers reviewing the ISL95210HRZ datasheet, ISL95210HRZ pinout, ISL95210HRZ application, or ISL95210HRZ equivalent, this page provides verified technical context, validated pin functions, confirmed thermal and transient performance limits, and real-world design implications of its R4™ architecture, margining controls, and light-load mode selection-critical for stable 10A rail generation under dynamic load conditions.
Technical Context
The ISL95210HRZ implements Renesas' patented R4™ current-mode hysteretic control, generating a synthetic current signal without external compensation components. Its modulator operates at 400kHz/533kHz/800kHz (set by FSET), with ±10% oscillator accuracy across –10°C to +100°C, and delivers fast transient response via COMP-voltage–driven frequency modulation-not fixed-frequency PWM.
It integrates low-RDS(on) PMOS (14.8–19.5mΩ) and NMOS (3.8–5.7mΩ) power stages, supports programmable output voltage margining (±10%/±15%/±20%), and includes comprehensive protection: valley overcurrent trip (10–14A), overvoltage (112–120% VDAC), undervoltage (81–87% VDAC), and thermal shutdown at 150°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Current | 10A continuous-supports full-power operation at +90°C ambient without airflow, enabling fanless notebook CPU core supply designs. |
| Input Voltage Range | 2.97V to 5.5V-compatible with 3.3V and 5V intermediate bus architectures, including USB PD and battery-backed systems. |
| Output Voltage Accuracy | ±0.6% over –10°C to +100°C-ensures stable regulation for sensitive microprocessor VDD rails without post-regulation trimming. |
| Switching Frequency | 400kHz / 533kHz / 800kHz (FSET-selectable)-higher frequencies reduce inductor size; lower frequencies improve light-load efficiency in CCM. |
| Efficiency | Up to 95%-achieved using integrated MOSFETs with low conduction losses and R4™ control minimizing switching loss overhead. |
| Thermal Performance | θJA = 40°C/W, θJC = 4°C/W-enables high-current operation on standard 4-layer PCBs with thermal vias under the T-PAD. |
| Protection Features | Valley overcurrent (10–14A), overvoltage (112–120% VDAC), undervoltage (81–87% VDAC), thermal shutdown (150°C)-prevents damage during fault conditions without external circuitry. |
Pinout & Package
ISL95210HRZ uses a 32-lead, 6mm × 4mm, 0.5mm pitch QFN package with exposed thermal pad (T-PAD) connected to PGND. The package is Pb-free, RoHS-compliant, and rated MSL3 per JEDEC J-STD-020.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| FCCM | Mode control input | Selects CCM-only (VCC), DCM-enabled (AGND), or audio mode (float); determines light-load efficiency strategy and audible noise profile. |
| FSET | Frequency programming input | Sets switching frequency: GND = 400kHz, float = 533kHz, VCC = 800kHz-directly impacts inductor size, EMI, and efficiency trade-offs. |
| EN | Enable logic input | Active-high enable with 2.0V rising threshold; initiates soft-start ramp (2.5mV/µs) and activates internal bias supplies when pulled to VCC. |
| PHASE (pins 4–10) | Power stage switching node | Connects directly to output inductor; all 7 pins must be shorted on PCB to minimize parasitic inductance and ensure current sharing. |
| VIN (pins 16–18) | Main input power rail | Accepts 2.97V–5.5V; bypassed with ≥10µF ceramic capacitor to PGND; multiple pins reduce IR drop and improve high-current delivery. |
| PVCC (pins 14–15) | Gate driver supply | Requires regulated 5V ±10% independent of VIN if VIN < 4.5V; powers internal gate drivers and biases VCC through 10Ω resistor. |
| VSEL0/VSEL1 | DAC voltage programming inputs | 3-state logic inputs selecting 9 preset output voltages (0.60V–1.80V); floating states expand resolution beyond binary encoding. |
| MSEL/MPCT | Voltage margining control | MSEL selects margin direction (high/low/nominal); MPCT sets margin magnitude (±10%/±15%/±20%)-used for production test and system validation. |
| PGOOD/PG_IN | Power-good signaling interface | PGOOD is active-H CMOS output; PG_IN sets logic-high level-enables sequencing with other rails and fault reporting to system controller. |
| T-PAD | Thermal and power ground | Exposed metal pad tied to PGND; requires ≥9 thermal vias (0.3mm diameter) to inner PGND plane for effective heat extraction and low-impedance return path. |
Key Features
| Feature | Design Value |
|---|---|
| R4™ Control Architecture | Eliminates need for external compensation components while delivering <1% output deviation during 10A/50A/µs load transients-reducing BOM count and layout sensitivity. |
| Pin-Selectable Output Voltage | 9 factory-trimmed DAC setpoints (0.60V–1.80V) configured via VSEL0/VSEL1-enables rapid board-level voltage tuning without resistor dividers or firmware changes. |
| Programmable Light-Load Efficiency | FCCM pin selects CCM (best transient response), DCM (highest light-load efficiency), or audio mode (ultralow-noise switching)-adapting to real-time system power states. |
| Output Voltage Margining | ±10%/±15%/±20% margining controlled by MSEL/MPCT-supports end-of-line functional testing, burn-in, and margin analysis without hardware modification. |
| Integrated Protection Suite | Valley overcurrent, overvoltage, undervoltage, and thermal shutdown with auto-recovery-ensures robust operation in unattended embedded and mobile applications. |
Applications
| Notebook CPU Core Power Rail | Point-of-Load Server Memory Supply |
|---|---|
Use Scenario: Powers Intel/AMD mobile processor cores requiring tightly regulated 0.75V–1.2V at up to 10A with fast transient response to burst workloads. IC Role / Device Role / Timing Role: Primary synchronous buck regulator delivering core VDD; manages dynamic voltage scaling (DVS) via DAC-programmed VOUT and soft-start slew rate. Use Value: R4™ control ensures <50mV output deviation during 10A load steps, eliminating need for large bulk capacitance and reducing total solution footprint by >30% vs. compensated controllers. |
Use Scenario: Supplies DDR4/LPDDR4 memory subsystems in edge servers where space-constrained boards demand high-density, thermally efficient 1.2V/1.8V rails. IC Role / Device Role / Timing Role: Standalone POL regulator with margining support for memory VDDQ/VDDIO validation during manufacturing and field diagnostics. Use Value: ±20% programmable margining enables automated production test of memory timing margins without external instrumentation or board rework. |
| Industrial FPGA I/O Bank Supply | Automotive Infotainment SoC Core Rail |
Use Scenario: Delivers configurable 1.0V–1.8V to FPGA I/O banks operating across extended temperature ranges in programmable logic controllers and vision systems. IC Role / Device Role / Timing Role: Digitally programmable buck converter supporting multiple I/O standards (LVDS, HSTL, SSTL); uses VSEL pins for runtime voltage reconfiguration. Use Value: 0.6% output accuracy over –10°C to +100°C eliminates need for closed-loop feedback or external DAC, simplifying FPGA power architecture. |
Use Scenario: Powers infotainment application processors (e.g., Qualcomm SA8155) in automotive dashboards requiring AEC-Q100–compatible 1.05V/1.10V core rails. IC Role / Device Role / Timing Role: High-current DC/DC regulator with PGOOD sequencing, thermal monitoring, and robust overvoltage protection for ASIL-B–aligned subsystems. Use Value: Integrated 150°C thermal shutdown and 112–120% overvoltage protection meet automotive safety requirements without adding discrete protection ICs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-current synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ISL95210IRZ | Wider junction temperature range (–40°C to +125°C) and extended operating ambient (–40°C to +100°C); identical pinout, electrical specs, and features. | Suitable for industrial and automotive environments requiring extended cold-start capability and higher thermal headroom. | Select ISL95210IRZ when ambient operating temperature may fall below –10°C or junction reliability at extreme temperatures is critical. |
| RTQ2132BGQW | 3.3V–18V input, 12A output, 12-bit VID interface, integrated telemetry; larger 5mm×5mm QFN-32 package; no R4™ architecture-uses conventional current-mode control. | Targets higher-input industrial and telecom rails; lacks DAC-based voltage programming and margining pins; requires external compensation. | Choose RTQ2132BGQW only when input voltage exceeds 5.5V or digital telemetry (I²C/PMBus) is required-otherwise ISL95210HRZ offers superior transient response and smaller solution size. |
Compared with ISL95210IRZ, the ISL95210HRZ trades extended temperature range for cost optimization in commercial notebooks; compared with RTQ2132BGQW, it delivers faster transient response and simpler layout due to R4™ control and fewer external components-but lacks wide-input flexibility and digital telemetry.
Availability
ISL95210HRZ is available at Aetrix Electronics and suitable for notebook computer power, FPGA I/O bank regulation, and industrial point-of-load applications requiring stable component supply, consistent thermal performance, and long-term production continuity.
Supply support for ISL95210HRZ 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 Corporation acquired Intersil in 2017 and maintains full product support, documentation, and qualification for legacy Intersil power management ICs including the ISL95210HRZ.
The ISL95210HRZ belongs to Renesas' high-efficiency integrated FET buck regulator family, designed specifically for space-constrained, high-current point-of-load applications in mobile computing and embedded systems where minimal external components and robust thermal performance are essential.
FAQ
What is the maximum ambient temperature at which ISL95210HRZ can deliver full 10A output current without airflow?
The ISL95210HRZ delivers full 10A output current in +90°C ambient temperature without forced airflow, as verified on the ISL95210EVAL1Z evaluation board. This capability relies on its low RDS(on) MOSFETs, 4°C/W θJC, and proper PCB thermal design-including thermal vias under the T-PAD. Derating begins above +90°C unless airflow or enhanced copper layers are added.
How does the R4™ control architecture in ISL95210HRZ eliminate the need for external compensation components?
The R4™ architecture in ISL95210HRZ uses a balanced current-mode hysteretic scheme that generates a synthetic current signal on-chip, removing reliance on traditional error amplifiers and integrator capacitors. This intrinsic loop stability-validated across LOUT/COUT variations-means no external compensation network is required, reducing component count and layout sensitivity while maintaining ±0.6% regulation accuracy.
Can ISL95210HRZ be used to generate non-standard output voltages like 1.35V, and what are the constraints?
Yes, ISL95210HRZ supports non-standard outputs like 1.35V using an external resistor divider on the VOUT pin-but only within ±5% of a DAC-set base voltage (e.g., 1.32V). For 1.35V, use VSEL0/VSEL1 to set 1.32V (1.2V + 10% margin), then apply Equation 3 from the datasheet with R1 = 100Ω. Exceeding ±5% risks loop instability and regulator shutdown.
What are the key differences between ISL95210HRZ and ISL95210IRZ, and when should I choose one over the other?
ISL95210HRZ is rated for –10°C to +100°C ambient operation, while ISL95210IRZ extends to –40°C to +100°C with a higher junction limit (–40°C to +125°C). Both share identical pinout, electrical specs, and features. Choose ISL95210HRZ for cost-sensitive commercial notebooks; select ISL95210IRZ for industrial, automotive, or outdoor applications requiring guaranteed startup below 0°C.
Does ISL95210HRZ support pre-biased start-up, and how is it enabled?
Yes, ISL95210HRZ supports pre-biased start-up-critical for hot-swap and multi-rail sequencing. It is automatically enabled when EN is asserted while VOUT already holds a valid voltage. During pre-biased start-up, the high-side MOSFET remains off until VOUT falls below the soft-start target, preventing reverse current flow and ensuring monotonic ramp-up without output collapse.
ISL95210HRZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 32-VFQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Obsolete
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Programmable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.97V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.6V
- Voltage - Output (Max):
- 2.16V
- Current - Output:
- 10A
- Frequency - Switching:
- 400kHz, 533kHz, 800kHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -10°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 32-QFN (6x4)
ISL95210HRZ FAQ
1.How can I place an order for ISL95210HRZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL95210HRZ 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 ISL95210HRZ reliable?
The price and inventory of ISL95210HRZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL95210HRZ is usually 5 days.
3.What payment methods are accepted for ISL95210HRZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL95210HRZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL95210HRZ?
ISL95210HRZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL95210HRZ 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 ISL95210HRZ?
For technical support, including ISL95210HRZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL95210HRZ requirements.
6.How does Aetrix verify that ISL95210HRZ is sourced from the original manufacturer or authorized distributors?
All ISL95210HRZ 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 ISL95210HRZ meets industry standards.
7.What is the process for return or replacement of ISL95210HRZ?
All ISL95210HRZ units undergo pre-shipment inspection (PSI). If there is an issue with ISL95210HRZ, 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 ISL95210HRZ part is unused and in its original packaging.
Return procedure for ISL95210HRZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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