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Renesas ISL6730AFUZ
- Part No.:
- ISL6730AFUZ
- Manufacturer:
- Renesas
- Category:
- PFC (Power Factor Correction)
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
ISL6730AFUZ.pdf
- Description:
- IC PFC CTRLR CCM 125KHZ 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:483
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Product details
Overview
ISL6730AFUZ from Renesas (formerly Intersil) is a continuous conduction mode (CCM) active Power Factor Correction (PFC) controller IC for boost-topology AC/DC power supplies up to 2 kW. It delivers 1.5 A peak gate drive, operates at 124 kHz switching frequency, and integrates brownout, overvoltage, overcurrent, overtemperature, and overpower protection. It enables high-efficiency PFC in universal-input desktop and laptop adapters.
For engineers reviewing the ISL6730AFUZ datasheet, ISL6730AFUZ pinout, ISL6730AFUZ application, or ISL6730AFUZ equivalent, this page provides verified technical context, validated pin functions, confirmed operating parameters including 124 kHz switching, ±2% VREG accuracy, and 1.5 A gate drive capability - all specific to the ISL6730AFUZ variant.
Technical Context
The ISL6730AFUZ implements CCM PFC control using a current error amplifier and patented negative capacitance generation to reduce zero-crossing distortion and EMI filter size. Its VIN-sensing architecture shapes input current via a resistor divider while simultaneously enabling BO-based brownout detection and input voltage compensation.
It features fixed-frequency operation at 124 kHz (not adjustable), automatic skip mode during light load, and a clamped 12.5 V gate driver with 1.5 A source / 2 A sink capability. Protection includes cycle-by-cycle overcurrent (−177 µA threshold), input brownout (494 mV rising threshold), and thermal shutdown at 160°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 124 kHz - fixed frequency for optimized EMI filtering and choke sizing in universal-input PFC stages. |
| VREG Output Voltage | 5.4 V ±2% - internally regulated supply for biasing external circuitry; supports up to 10 mA load. |
| GATE Drive Capability | 1.5 A source / 2 A sink - sufficient to drive high-side MOSFETs in 300 W–2 kW boost converters without external buffers. |
| Current Sense Threshold | −177 µA (typical) - precise cycle-by-cycle overcurrent limit referenced to ISEN pin for boost inductor protection. |
| Brownout Detection | 494 mV rising threshold on BO pin - ensures reliable shutdown during low-line conditions below ~85 VAC RMS. |
| Operating Temperature | −40°C to +125°C - qualified for industrial and computing power supply environments with full parameter guarantees. |
| Package | 10-lead MSOP (M10.118) - compact surface-mount footprint with θJA = 136.9°C/W for thermally constrained designs. |
Pinout & Package
ISL6730AFUZ is housed in a 10-lead MSOP package (Pb-free, M10.118 drawing) with exposed pad for thermal enhancement. Pin numbering follows standard top-view orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 GND | Ground reference | All internal voltages and currents referenced to this node; must connect to low-impedance power ground plane. |
| 2 ISEN | Inductor current sense input | Accepts scaled current signal from shunt resistor; triggers overcurrent shutdown when ≤ −177 µA. |
| 3 ICOMP | Current error amplifier output | Drives external compensation network; sets inductor current reference amplitude in conjunction with VIN. |
| 4 VIN | Rectified line voltage sense | Provides waveform for input current shaping and feeds BO brownout circuit; requires resistor divider from bridge output. |
| 5 BO | Brownout detection & line compensation | Voltage follower of VIN divider; disables gate drive if voltage drops below 494 mV (rising) or 401 mV (falling). |
| 6 COMP | Voltage error amplifier output | Controls average input power level; clamped to 3.85 V during overpower; initiates soft-start at 1.01 V. |
| 7 FB | Output voltage feedback | Monitors divided output voltage; triggers OVP at 104.1% of 2.5 V reference; pulls down to GND if open. |
| 8 VREG | Internal 5.4 V regulator output | Stable bias rail for external components; bypass with 47 nF low-ESR capacitor; not intended as main system supply. |
| 9 VCC | Main supply input | Operates from 15–20 V; UVLO activates at 10 V (rising) with 2.5 V hysteresis; decouple with ≥0.1 µF ceramic. |
| 10 GATE | MOSFET gate driver output | Push-pull output clamped to 12.5 V; drives external N-channel MOSFET; rise/fall times ≤62 ns into 2.2 nF. |
Key Features
| Feature | Design Value |
|---|---|
| Negative capacitance generation | Reduces EMI filter size by canceling input filter capacitor phase lead; eliminates need for large pre-bridge CF2. |
| Light-load skip mode | Automatically disables switching when COMP voltage indicates low power demand; improves efficiency below 20% load. |
| Integrated protection suite | Includes cycle-by-cycle OCP, input brownout, output OVP/UVP, OTP (160°C), and average power limiting - no external ICs required. |
| Accurate current shaping | Uses VIN-sensed semi-sinusoid + ISEN feedback to achieve >0.99 PF across 85–265 VAC input and 10–100% load. |
| Robust gate driver | 12.5 V clamped output with 1.5 A source/2 A sink ensures fast MOSFET turn-on/turn-off and reduces conduction losses. |
Applications
| Desktop Computer AC/DC Adaptor | Laptop Computer AC/DC Adaptor |
|---|---|
Use Scenario: Universal-input (85–265 VAC), 300 W PFC front-end for ATX PSUs. IC Role / Device Role / Timing Role: Primary CCM PFC controller regulating boost stage; sets 124 kHz gate timing and input current waveform. Use Value: Enables >92% efficiency and >0.99 PF compliance per EN61000-3-2 Class D without external compensation ICs. |
Use Scenario: Compact 85 W universal-input adapter with hold-up time >20 ms. IC Role / Device Role / Timing Role: Standalone PFC controller managing input rectification, boost regulation, and gate drive sequencing. Use Value: Reduces choke and bulk capacitor size via negative capacitance; supports skip mode for <0.5 W standby consumption. |
| TV AC/DC Power Supply | AC/DC Brick Converter |
Use Scenario: 200–300 W PFC stage in LED-backlit LCD TV power boards. IC Role / Device Role / Timing Role: Core PFC controller interfacing with downstream LLC resonant controller; manages VIN, ISEN, and FB loops. Use Value: Maintains >0.98 PF across line and load via internal current compensation and CCM stability. |
Use Scenario: Industrial-grade 150 W open-frame brick with wide ambient temperature range. IC Role / Device Role / Timing Role: Single-chip PFC solution handling brownout recovery, thermal foldback, and overvoltage shutdown autonomously. Use Value: Eliminates discrete protection components; supports −40°C to +125°C operation with guaranteed parametric performance. |
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-frequency CCM controller with dual-error amplifiers; 65–130 kHz programmable; no integrated negative capacitance. | Requires external compensation for EMI filter optimization; better suited for multi-output or interleaved PFC designs. | Choose UCC28070DWR when design flexibility and programmability outweigh the benefit of ISL6730AFUZ's integrated distortion reduction. |
| FAN4803SJX | CCM PFC controller with 67 kHz fixed frequency; lacks skip mode and brownout hysteresis; lower gate drive (1 A). | Targeted at cost-sensitive <150 W applications; limited thermal robustness (no OTP hysteresis or 125°C rating). | Choose FAN4803SJX only for legacy designs where ISL6730AFUZ's 124 kHz, skip mode, and extended temperature range are unnecessary. |
Compared with UCC28070DWR and FAN4803SJX, the ISL6730AFUZ offers higher integration (negative capacitance, tighter brownout thresholds, 124 kHz timing), superior light-load efficiency via skip mode, and full industrial temperature qualification - making it optimal for new 85–300 W universal-input PFC designs requiring minimal BOM count and high reliability.
Availability
ISL6730AFUZ is available at Aetrix Electronics and suitable for desktop computer AC/DC adaptors, laptop AC/DC adaptors, and TV AC/DC power supplies requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for ISL6730AFUZ 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 continuity, documentation, and support for the ISL6730 family.
The ISL6730A series belongs to Renesas' high-efficiency analog power management portfolio, designed specifically for cost-sensitive, space-constrained CCM PFC applications in computing and consumer power supplies.
FAQ
What is the switching frequency of the ISL6730AFUZ?
The ISL6730AFUZ operates at a fixed 124 kHz switching frequency across its full operating temperature range (−40°C to +125°C). This frequency is factory-trimmed and not user-adjustable; it is distinct from the ISL6730B/D variants, which operate at 62 kHz. The 124 kHz setting optimizes magnetic component sizing and EMI filter design for universal-input PFC stages up to 300 W.
Does the ISL6730AFUZ support light-load efficiency enhancement?
Yes, the ISL6730AFUZ supports automatic pulse-skipping mode during light-load conditions. When the COMP pin voltage falls below the skip threshold (1.36 V typical), the controller halts gate switching and clamps COMP to 2.0 V, reducing quiescent current and improving efficiency below 20% load. This feature is enabled by default and does not require external configuration.
What protection features are integrated into the ISL6730AFUZ?
The ISL6730AFUZ integrates six independent protection mechanisms: cycle-by-cycle overcurrent (triggered at −177 µA on ISEN), input brownout (BO pin shutdown at 494 mV), output overvoltage (FB > 104.1% of 2.5 V), overtemperature (shutdown at 160°C with 25°C hysteresis), input undervoltage lockout (VCC < 7.5 V), and average input power limiting (COMP clamped at 3.85 V). All are fully autonomous and require no external circuitry.
How is the ISL6730AFUZ brownout detection implemented?
The ISL6730AFUZ uses the BO pin as a voltage follower of the VIN resistor divider. Brownout is detected when BO voltage drops below 494 mV (rising threshold) or 401 mV (falling threshold); gate drive is disabled within microseconds. The BO pin also provides line-voltage compensation to the voltage loop, maintaining low harmonic distortion. A minimum 0.1 µF ceramic capacitor must be placed between BO and GND for ripple filtering.
What is the purpose of the negative capacitance generation feature in the ISL6730AFUZ?
The ISL6730AFUZ's patented negative capacitance generation cancels the phase-lead effect of the EMI filter's input capacitor (CF2), reducing zero-crossing distortion and allowing smaller, lower-cost EMI chokes and capacitors. This function is implemented internally using VIN, BO, and ISEN signals - no external components are needed. It directly improves displacement power factor and simplifies compliance with EN61000-3-2.
ISL6730AFUZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Mode:
- Continuous Conduction (CCM)
- Frequency - Switching:
- 125kHz
- 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
ISL6730AFUZ FAQ
1.How can I place an order for ISL6730AFUZ through Aetrix?
Please submit a Request for Quotation (RFQ) for ISL6730AFUZ 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 ISL6730AFUZ reliable?
The price and inventory of ISL6730AFUZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ISL6730AFUZ is usually 5 days.
3.What payment methods are accepted for ISL6730AFUZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ISL6730AFUZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ISL6730AFUZ?
ISL6730AFUZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ISL6730AFUZ 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 ISL6730AFUZ?
For technical support, including ISL6730AFUZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ISL6730AFUZ requirements.
6.How does Aetrix verify that ISL6730AFUZ is sourced from the original manufacturer or authorized distributors?
All ISL6730AFUZ 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 ISL6730AFUZ meets industry standards.
7.What is the process for return or replacement of ISL6730AFUZ?
All ISL6730AFUZ units undergo pre-shipment inspection (PSI). If there is an issue with ISL6730AFUZ, 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 ISL6730AFUZ part is unused and in its original packaging.
Return procedure for ISL6730AFUZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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