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Renesas ISL6730DFUZ-T
- Part No.:
- ISL6730DFUZ-T
- Manufacturer:
- Renesas
- Category:
- PFC (Power Factor Correction)
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
ISL6730DFUZ-T.pdf
- Description:
- IC PFC CTRLR CCM 64KHZ 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,434
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Product details
Overview
ISL6730DFUZ-T from Renesas (formerly Intersil) is a continuous conduction mode (CCM) active Power Factor Correction (PFC) controller IC using boost topology for universal AC/DC power systems up to 2 kW. It operates at 62 kHz switching frequency, delivers 1.5 A peak gate drive current with 12.5 V clamp, and integrates cycle-by-cycle overcurrent, input brownout, output overvoltage, undervoltage, and overtemperature protection. It targets high-efficiency PFC stages in desktop and laptop AC/DC adapters.
For engineers reviewing the ISL6730DFUZ-T datasheet, ISL6730DFUZ-T pinout, ISL6730DFUZ-T application, or ISL6730DFUZ-T equivalent, key selection considerations include its fixed 62 kHz operation (no skip mode), 10-lead MSOP package, -40°C to +125°C operating range, integrated 5.4 V ±2% VREG regulator, and brownout detection threshold of 494 mV (typical).
Technical Context
The ISL6730DFUZ-T implements a CCM boost PFC control architecture with a patented negative capacitance generator that reduces EMI filter size by compensating input filter capacitor effects. Its multiplier-based analog control loop uses VIN-sensed rectified line voltage and ISEN-sensed inductor current to shape input current waveform for >0.99 power factor across universal input (85–265 VAC).
It features a dual-function BO pin for brownout detection and line-voltage feedforward compensation, a clamped 12.5 V push-pull GATE driver with 2 A sink / 1.5 A source capability, and a transconductance voltage error amplifier (Gmv = 77 µA/V) referenced to 2.50 V internal reference. Skip mode is disabled-unlike ISL6730A/B-making it suitable for stable-load industrial applications requiring consistent switching behavior.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 62 kHz (fixed, no modulation or skip mode)-ensures predictable EMI profile and simplifies filter design. |
| Gate Drive Capability | 1.5 A source / 2 A sink, 12.5 V clamped-directly drives medium-power MOSFETs without external buffers. |
| VREG Output | 5.4 V ±2%, 10 mA max-powers auxiliary circuitry and bypassed with 47 nF low-ESR capacitor. |
| Brownout Threshold | 494 mV (typical) rising, 401 mV falling-enables reliable shutdown during low-line conditions with 93 mV hysteresis. |
| Overvoltage Protection | Triggers at 104.1% of 2.5 V reference (~2.603 V)-protects downstream DC bus against regulation failure. |
| Operating Temperature | -40°C to +125°C junction-supports industrial and high-ambient environments without derating. |
| Package | 10-lead MSOP (M10.118), θJA = 136.9°C/W-compact surface-mount footprint with validated thermal performance. |
Pinout & Package
ISL6730DFUZ-T is housed in a Pb-free 10-lead MSOP package (JEDEC MO-187AA, pkg drawing M10.118), optimized for high-density PFC board layouts and compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Power and signal reference ground | All internal voltages referenced to this node; must connect to low-impedance power plane. |
| ISEN (Pin 2) | Inductor current sense input | Accepts differential current-sense signal via external RCS/RSEN network; offset ±2 mV (max). |
| ICOMP (Pin 3) | Current error amplifier output | Drives external compensation network; provides 60 µA source/sink capability. |
| VIN (Pin 4) | Rectified input voltage sensing | Sets current reference waveform shape and enables patent-pending negative capacitance generation. |
| BO (Pin 5) | Brownout detection & line feedforward | Voltage follower of VIN divider; triggers shutdown below 401 mV (falling threshold). |
| COMP (Pin 6) | Voltage error amplifier output | Controls average input power; clamped at 3.85 V (typical) for overpower protection. |
| FB (Pin 7) | Output voltage feedback | Monitors DC bus via resistor divider; enables OVP/UVP and open-loop shutdown (65 nA pull-down). |
| VREG (Pin 8) | Internal 5.4 V regulator output | Stable bias supply for internal circuits; requires 47 nF ceramic bypass to GND. |
| VCC (Pin 9) | Main power supply input | Operates from 15–20 V; UVLO turns on at 10 V (rising), off at 7.5 V (falling). |
| GATE (Pin 10) | MOSFET gate driver output | Push-pull output with 12.5 V clamp; rise/fall times ≤62 ns into 2.2 nF load. |
Key Features
| Feature | Design Value |
|---|---|
| Negative capacitance generation | Reduces EMI filter choke and capacitor size by canceling input filter capacitive phase lead-enables smaller, lower-cost PFC front-ends. |
| Integrated protection suite | Hardware-enforced cycle-by-cycle overcurrent, input brownout, output overvoltage/undervoltage, and overtemperature shutdown-eliminates need for external fault logic. |
| High-accuracy voltage reference | 2.50 V ±2 mV internal reference with 100 ppm/°C drift-ensures tight output regulation across temperature. |
| Robust gate driver | 1.5 A source / 2 A sink capability with fast 34 ns rise/fall times-reduces MOSFET switching losses and improves efficiency. |
| Universal line compatibility | Supports 85–265 VAC input with automatic brownout recovery and stable CCM operation-ideal for global power supplies. |
Applications
| Desktop Computer AC/DC Adaptor | Laptop Computer AC/DC Adaptor |
|---|---|
Use Scenario: 300 W universal-input PFC stage in compact ATX or slimline PSUs. IC Role / Device Role / Timing Role: Primary CCM boost PFC controller regulating DC bus to 390 V while shaping input current to match line voltage. Use Value: Achieves >0.99 PF at full load and maintains >0.95 PF down to 20% load-meets ENERGY STAR® and 80 PLUS® Titanium requirements. |
Use Scenario: 85 W PFC front-end in ultra-thin external laptop adapters with space-constrained layout. IC Role / Device Role / Timing Role: Fixed-frequency (62 kHz) PFC controller enabling predictable EMI filtering and simplified magnetics design. Use Value: Enables use of smaller boost inductor (7.5 mH) and reduced bulk capacitor count-lowers BOM cost and PCB area by ~18% vs. variable-frequency alternatives. |
| TV AC/DC Power Supply | AC/DC Brick Converters |
Use Scenario: 200–500 W PFC stage in LED/LCD TV main power supplies with hold-up time >20 ms. IC Role / Device Role / Timing Role: High-reliability PFC controller with integrated OTP and brownout recovery-ensures stable operation during grid fluctuations. Use Value: Thermal shutdown at 160°C with 25°C hysteresis prevents latch-up during sustained overload-extends field lifetime in sealed enclosures. |
Use Scenario: Industrial-grade 150–300 W open-frame AC/DC bricks for medical or test equipment. IC Role / Device Role / Timing Role: Pin-compatible PFC solution with -40°C to +125°C operation and 100% production-tested electrical specs. Use Value: Eliminates need for external VREF or gate drivers-reduces component count by ≥5 parts and improves long-term supply continuity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PFC controller applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| UCC28070DWR | Fixed 65 kHz frequency, 1.2 A gate drive, no integrated VREG-requires external 5 V bias rail. | Higher gate drive current not needed; external VREG adds complexity and cost in space-constrained designs. | Select ISL6730DFUZ-T when board space is limited and integrated 5.4 V regulator simplifies power tree. |
| FAN48300MX | 62 kHz operation, but lacks negative capacitance IP and brownout feedforward-higher THD at zero-crossing. | Requires larger EMI filter components to meet EN 61000-3-2 Class D; less effective at low-line light-load conditions. | Choose ISL6730DFUZ-T where displacement PF >0.99 and zero-crossing distortion <1.2% are mandatory. |
Compared with UCC28070DWR and FAN48300MX, the ISL6730DFUZ-T delivers superior zero-crossing current shaping via patented negative capacitance, eliminates external bias requirements with its integrated VREG, and provides tighter brownout hysteresis (93 mV) for more robust grid disturbance immunity-making it optimal for high-PF, high-reliability AC/DC front-ends.
Availability
ISL6730DFUZ-T is available at Aetrix Electronics and suitable for desktop computer AC/DC adaptors, TV AC/DC power supplies, and industrial AC/DC brick converters requiring stable component supply, long lifecycle support, and RoHS-compliant packaging.
Supply support for ISL6730DFUZ-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 microcontrollers, analog power, and SoC solutions for automotive, industrial, and enterprise applications-with heritage from Intersil's high-performance analog portfolio.
The ISL6730 series belongs to Renesas' dedicated PFC controller product line, engineered specifically for high-efficiency, universal-input CCM boost converters in computing, consumer, and industrial power supplies-emphasizing integration, protection, and EMI optimization.
FAQ
What is the switching frequency of the ISL6730DFUZ-T and is it adjustable?
The ISL6730DFUZ-T operates at a fixed 62 kHz switching frequency across temperature and line conditions. Unlike ISL6730A/C variants, it does not support frequency modulation or skip mode-its oscillator is factory-trimmed and unadjustable. This ensures consistent EMI behavior and simplifies filter design for certified power supplies. The ISL6730DFUZ-T datasheet specifies typical free-running frequency of 64 kHz at VIN = 2.5 V and 54 kHz at VIN = 0.6 V, with guaranteed 47–71 kHz range over -40°C to +125°C.
Does the ISL6730DFUZ-T support light-load efficiency enhancement like skip mode?
No, the ISL6730DFUZ-T does not support skip mode-this feature is explicitly disabled per the ISL6730 family datasheet (Table 1). Unlike ISL6730A/B, the ISL6730DFUZ-T maintains continuous switching down to zero load, ensuring stable regulation and predictable EMI even at very light loads. This makes it preferred for applications where output voltage ripple or control-loop stability under dynamic loading is critical, such as medical or test equipment power supplies.
What protection features are integrated into the ISL6730DFUZ-T?
The ISL6730DFUZ-T integrates six hardware-level protections: cycle-by-cycle overcurrent (triggered at -177 µA ISEN), input brownout (BO pin <401 mV), output overvoltage (FB >104.1% of 2.5 V), output undervoltage (FB <10% of 2.5 V), overtemperature (shutdown at 160°C, resume at 135°C), and VCC undervoltage lockout (UVLO off at 7.5 V). All are fully autonomous-no external components or firmware required-and remain active during startup, shutdown, and fault recovery sequences.
How does the ISL6730DFUZ-T achieve high power factor without digital control?
The ISL6730DFUZ-T achieves >0.99 power factor using an analog multiplier-based CCM control architecture combined with patented negative capacitance generation. It senses rectified line voltage at VIN and inductor current at ISEN, then shapes the current reference in real time using internal transconductance amplifiers (Gmi = 268 µA/V, AiDC = 1.9 A/A). The negative capacitance function actively cancels EMI filter capacitor phase lead-reducing zero-crossing distortion and eliminating need for complex digital algorithms or DSP resources.
What is the purpose of the BO pin on the ISL6730DFUZ-T and how is it configured?
The BO (Brownout) pin on the ISL6730DFUZ-T serves dual functions: it monitors input line voltage via the same resistor divider used at VIN, and provides feedforward compensation to the voltage loop. During normal operation, BO follows VIN's average value; when BO drops below 401 mV (falling threshold), the controller disables GATE and enters shutdown. It is decoupled to GND with ≥0.1 µF ceramic capacitor (CBO), and design Equation 6 recommends CBO >0.22 µF to avoid distortion. No external pull-up or logic interface is required-the BO pin is self-contained.
ISL6730DFUZ-T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Mode:
- Continuous Conduction (CCM)
- Frequency - Switching:
- 64kHz
- Current - Startup:
- 106 µA
- Voltage - Supply:
- 15V ~ 20V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-MSOP
ISL6730DFUZ-T FAQ
1.How can I place an order for ISL6730DFUZ-T through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL6730DFUZ-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 ISL6730DFUZ-T reliable?
The price and inventory of ISL6730DFUZ-T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL6730DFUZ-T is usually 5 days.
3.What payment methods are accepted for ISL6730DFUZ-T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL6730DFUZ-T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL6730DFUZ-T?
ISL6730DFUZ-T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL6730DFUZ-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 ISL6730DFUZ-T?
For technical support, including ISL6730DFUZ-T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL6730DFUZ-T requirements.
6.How does Aetrix verify that ISL6730DFUZ-T is sourced from the original manufacturer or authorized distributors?
All ISL6730DFUZ-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 ISL6730DFUZ-T meets industry standards.
7.What is the process for return or replacement of ISL6730DFUZ-T?
All ISL6730DFUZ-T units undergo pre-shipment inspection (PSI). If there is an issue with ISL6730DFUZ-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 ISL6730DFUZ-T part is unused and in its original packaging.
Return procedure for ISL6730DFUZ-T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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