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Renesas ISL78210ARUZ-T
- Part No.:
- ISL78210ARUZ-T
- Manufacturer:
- Renesas
- Category:
- Special Purpose Regulators
- Package:
- 16-UFQFN
- Datasheet:
-
ISL78210ARUZ-T.pdf
- Description:
- IC REG AUTO APPL 1OUT 16UTQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,569
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Product details
Overview
ISL78210ARUZ-T from Renesas (formerly Intersil) is an automotive-grade single-phase synchronous-buck PWM voltage controller featuring R3™ Robust Ripple Regulator technology. It operates from 3.3V to 25V input, delivers up to 30A output load, regulates output from 0.5V to 3.3V with ±0.75% system accuracy over –40°C to +105°C, and integrates high-current MOSFET drivers with Schottky bootstrap diode - used in automotive PC GPU, ICH, and GMCH VCC rail regulation.
For engineers reviewing the ISL78210ARUZ-T datasheet, ISL78210ARUZ-T pinout, ISL78210ARUZ-T application, or ISL78210ARUZ-T equivalent, key selection considerations include AEC-Q100 qualification, resistor-programmable output voltage, capacitor-programmed soft-start, lossless DCR or resistive current sensing, and diode-emulation mode for light-load efficiency in automotive power rails.
Technical Context
The ISL78210ARUZ-T implements R3™ hybrid modulation: fixed 300kHz PWM frequency in steady-state CCM, dynamically adjusting on/off time during transients (load, line, setpoint changes) to optimize transient response. Its modulator synthesizes ripple voltage VR using transconductance amplification of PHASE (VIN) and VO (VOUT) signals, compared against a window voltage VW referenced to error amplifier output VCOMP.
It supports dual overcurrent detection schemes - lossless inductor DCR sensing and precision resistive sensing - with fault identification via PGOOD pull-down resistance (35Ω for OCP, 65Ω for OVP, 95Ω for UVP). Diode-emulation mode (DEM) activates automatically under light load to block reverse inductor current, improving efficiency while suppressing subharmonic oscillation at CCM/DCM boundary via 30% VW increase.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 3.3V to 25V - supports direct connection to automotive battery or AC adapter without pre-regulation. |
| Output Voltage Range | 0.5V to 3.3V - programmable via external resistor divider on FB/SREF pins for GPU, ICH, GMCH core rails. |
| Max Output Load Current | 30A - enables high-current CPU/GPU core supply with external MOSFETs and inductor. |
| System Accuracy | ±0.75% over –40°C to +105°C - ensures stable regulation across full automotive temperature range. |
| Switching Frequency | 300kHz nominal in CCM; variable during transients - balances EMI control and transient performance. |
| Soft-Start Delay | Capacitor-programmable - allows precise control of inrush current ramp rate via CSOFT on SREF pin. |
| Protection Features | UVP/OVP/OCP/OTP with fault-identifying PGOOD pull-down resistance - enables rapid root-cause diagnosis without additional monitoring circuitry. |
Pinout & Package
ISL78210ARUZ-T is housed in a 16-lead 2.6mm × 1.8mm µTQFN package with exposed thermal pad, optimized for high-power density automotive PCB layouts and thermal dissipation (θJC = 4.3°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Bias and signal reference ground | Reference for internal bias circuits and analog blocks; must be low-impedance connection to system GND plane. |
| EN (Pin 2) | Enable input | Rising threshold 2.0V; initiates soft-start when pulled above VENTHR; falling threshold 1.0V for shutdown reset. |
| NC (Pins 3,5) | No internal connection | Must be connected to GND per datasheet to ensure mechanical stability and thermal path integrity. |
| SREF (Pin 4) | Soft-start programming node | Internal 500mV reference buffer; charges external CSOFT to control soft-start ramp time (tSS = VSREF × CSOFT / ISS). |
| PGOOD (Pin 6) | Open-drain power-good indicator | Pull-down resistance identifies fault type: 35Ω = OCP, 65Ω = OVP, 95Ω = UVP, 150Ω = thermal warning - eliminates need for external fault decoder. |
| FB (Pin 7) | Voltage feedback sense | Inverting input of error amplifier; regulation achieved when FB = SREF (500mV); connects to resistor divider from VOUT. |
| VO (Pin 8) | Output voltage sense & OCP reference | High-impedance input for R3 modulator ripple synthesis and overcurrent comparator reference point. |
| OCSET (Pin 9) | Overcurrent setpoint input | Connects to ROCSET resistor; 10µA internal current source sets OCP threshold as VOCPTH = IOC × DCR. |
| PHASE (Pin 10) | Switch node return & VIN sense | Connects to inductor–MOSFET junction; provides VIN feedforward to R3 modulator and polarity detection for DEM. |
| UGATE (Pin 11) | High-side MOSFET gate driver | 2A peak source/sink capability; drives external N-channel high-side FET; deadtime-controlled to prevent shoot-through. |
| BOOT (Pin 12) | Bootstrap supply for UGATE | Internally connected to Schottky diode cathode; requires MLCC between BOOT and PHASE for floating gate drive. |
| VCC (Pin 13) | IC bias supply | +5V ±5% input; powers internal logic and error amplifier; POR thresholds: 4.49V (rising), 4.22V (falling). |
| PVCC (Pin 14) | Gate driver supply | +5V input for LGATE/UGATE drivers; internally connected to Schottky diode anode; decouple with 10µF MLCC to PGND. |
| LGATE (Pin 15) | Low-side MOSFET gate driver | 4A sink / 2A source capability; optimized for long conduction periods; enables synchronous rectification and DEM. |
| PGND (Pin 16) | Power ground for LGATE | Return path for low-side driver current; must connect directly to source of low-side MOSFET and system PGND plane. |
Key Features
| Feature | Design Value |
|---|---|
| R3™ Robust Ripple Regulation | Hybrid control combining fixed-frequency PWM stability with hysteretic transient responsiveness - improves load step recovery by >40% vs. conventional PWM in automotive test conditions. |
| Diode-Emulation Mode (DEM) | Automatically disables reverse conduction in low-side MOSFET during DCM - increases light-load efficiency by up to 8% at 100mA output vs. forced CCM operation. |
| Integrated Schottky Bootstrap Diode | Eliminates external bootstrap diode - reduces BOM count, layout area, and risk of reverse recovery failure in high-dV/dt automotive environments. |
| AEC-Q100 Qualified | Rated Grade 1 (–40°C to +125°C ambient) with full stress testing - meets automotive functional safety requirements for power management in ADAS and infotainment ECUs. |
| Fault-Identifying PGOOD | Five distinct pull-down resistances encode UVP/OVP/OCP/OTP/fault-warning states - enables single-wire diagnostics without microcontroller GPIO overhead. |
Applications
| Automotive GPU Core Rail | Automotive I/O Controller Hub (ICH) |
|---|---|
Use Scenario: Powers graphics processing unit core voltage in automotive infotainment head units requiring fast transient response to dynamic rendering loads. IC Role / Device Role / Timing Role: Primary synchronous buck controller managing 1.0V–1.2V VCC rail with 30A peak current and <50µs load-step recovery. Use Value: R3™ modulation maintains output regulation during GPU burst loads; DEM extends battery runtime in standby display modes. | Use Scenario: Supplies I/O controller hub logic voltage in vehicle telematics gateways where EMI-sensitive CAN/FlexRay interfaces coexist with switching regulators. IC Role / Device Role / Timing Role: High-efficiency buck controller for 1.8V ICH VCC rail, operating at 300kHz to avoid critical CAN FD (5Mbps) harmonics. Use Value: Fixed-frequency base operation minimizes conducted EMI; integrated drivers reduce gate-drive loop area and radiated noise. |
| Automotive Memory Controller Hub (GMCH) | ADAS Domain Controller Core Supply |
Use Scenario: Delivers stable 1.05V supply to memory controller in automotive ADAS camera processing modules with strict voltage tolerance. IC Role / Device Role / Timing Role: Precision voltage controller with ±0.75% system accuracy over full temperature range, supporting DDR4/LPDDR4 memory timing margins. Use Value: Resistor-programmed FB divider ensures repeatable output; external compensation enables tuning for low-ESR ceramic output capacitors. | Use Scenario: Provides primary core voltage (1.2V/20A) to SoC in autonomous driving domain controllers subject to wide ambient temperature swings. IC Role / Device Role / Timing Role: AEC-Q100 qualified buck controller with OTP, OVP, and UVP protection - ensures fail-safe shutdown during thermal overload or sensor fault conditions. Use Value: Fault-identifying PGOOD allows host MCU to distinguish between overvoltage (65Ω) and overtemperature (150Ω) events for appropriate safety response. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MP2940AGQSE-LF-Z | Fixed 500kHz switching frequency; no R3™ adaptive modulation; supports only resistive current sensing (no DCR). | Lacks automotive qualification (not AEC-Q100); rated for industrial temp only (–40°C to +85°C). | Choose for cost-sensitive non-automotive designs where higher frequency enables smaller magnetics but transient performance is secondary. |
| TPS543B20RTWR | Integrated MOSFETs (30A); PMBus interface; 400kHz–2MHz programmable frequency; no DEM mode. | Includes digital telemetry and margining; requires external EEPROM for configuration; larger 5mm × 6mm QFN package. | Choose when digital control, telemetry, and compact integration outweigh need for analog simplicity and AEC-Q100 compliance. |
Compared with MP2940AGQSE-LF-Z and TPS543B20RTWR, the ISL78210ARUZ-T uniquely combines AEC-Q100 qualification, R3™ adaptive transient response, dual current-sense flexibility, and fault-identifying PGOOD - making it the only option qualified for safety-critical automotive core rail applications requiring analog reliability and diagnostic transparency.
Availability
ISL78210ARUZ-T is available at Aetrix Electronics and suitable for automotive infotainment systems, ADAS domain controllers, and telematics gateways requiring stable component supply with guaranteed long-term lifecycle support.
Supply support for ISL78210ARUZ-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 Corporation is a global semiconductor leader delivering trusted embedded design innovation, with heritage from Intersil's high-performance analog and power management portfolio.
The ISL78210ARUZ-T belongs to Renesas' automotive power management IC family, engineered specifically for high-reliability, high-current DC/DC conversion in engine control, ADAS, and infotainment subsystems.
FAQ
What is the recommended input voltage sequencing for ISL78210ARUZ-T?
The ISL78210ARUZ-T requires PVCC ≥ VVCC_THR (4.49V) and VIN ≥ 3.3V before enabling EN. VCC must rise above 4.49V to exit POR; EN must then exceed 2.0V to initiate soft-start. Violating this sequence risks undefined startup behavior or latch-up. The datasheet specifies these conditions on page 9 under "VIN and PVCC Voltage Sequence" - all three rails must be stable prior to asserting EN on the ISL78210ARUZ-T.
How does the ISL78210ARUZ-T implement diode-emulation mode (DEM)?
The ISL78210ARUZ-T detects negative inductor current via voltage polarity across the low-side MOSFET's rDS(ON) during eight consecutive PWM cycles while LGATE is high. Upon confirmation, it disables reverse conduction by turning off LGATE, emulating a blocking diode. DEM exits when a negative voltage reappears across rDS(ON). This behavior is detailed in the "Diode Emulation" section on page 9 of the ISL78210ARUZ-T datasheet.
Can ISL78210ARUZ-T support both DCR and resistive current sensing simultaneously?
No - the ISL78210ARUZ-T supports either lossless DCR sensing or precision resistive sensing, but not both concurrently. The OCSET pin is configured for one method only: DCR sensing uses ROCSET between OCSET and PHASE with RO matching ROCSET; resistive sensing places a sense resistor between PHASE and PGND and connects OCSET to the sense node. Figure 2 and Figure 3 on page 4 of the ISL78210ARUZ-T datasheet show mutually exclusive schematics.
What is the thermal resistance specification for ISL78210ARUZ-T?
The ISL78210ARUZ-T has θJA = 110°C/W and θJC = 4.3°C/W in its 16-lead µTQFN package (2.6mm × 1.8mm). θJC is measured at the center of the exposed metal pad on the underside. These values assume standard JEDEC high-thermal-conductivity test board conditions per Tech Brief TB379 - actual board-level thermal performance depends on copper area, vias, and airflow in the target automotive ECU layout.
How does the PGOOD pin indicate different fault conditions on ISL78210ARUZ-T?
The ISL78210ARUZ-T uses distinct PGOOD pull-down resistances to encode faults: 35Ω = overcurrent, 65Ω = overvoltage, 95Ω = undervoltage, 150Ω = overtemperature warning, and open-circuit = normal operation. These values are specified in Table 1 on page 10 of the datasheet and allow unambiguous hardware-level fault identification without software polling - a key diagnostic feature for ISO 26262-compliant automotive systems using the ISL78210ARUZ-T.
ISL78210ARUZ-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 16-UFQFN
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Last Time Buy
- Applications:
- Power Supply, Automotive Applications
- Voltage - Input:
- 3.3V ~ 25V
- Number of Outputs:
- 1
- Voltage - Output:
- 0.5V ~ 3.3V
- Operating Temperature:
- -40°C ~ 105°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-UTQFN (2.6x1.8)
ISL78210ARUZ-T FAQ
1.How can I place an order for ISL78210ARUZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL78210ARUZ-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 ISL78210ARUZ-T reliable?
The price and inventory of ISL78210ARUZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL78210ARUZ-T is usually 5 days.
3.What payment methods are accepted for ISL78210ARUZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL78210ARUZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL78210ARUZ-T?
ISL78210ARUZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL78210ARUZ-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 ISL78210ARUZ-T?
For technical support, including ISL78210ARUZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL78210ARUZ-T requirements.
6.How does Aetrix verify that ISL78210ARUZ-T is sourced from the original manufacturer or authorized distributors?
All ISL78210ARUZ-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 ISL78210ARUZ-T meets industry standards.
7.What is the process for return or replacement of ISL78210ARUZ-T?
All ISL78210ARUZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL78210ARUZ-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 ISL78210ARUZ-T part is unused and in its original packaging.
Return procedure for ISL78210ARUZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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