DATASHEET ISL6730A, ISL6730B, ISL6730C, ISL6730D FN8258 Rev 1.00 Power Factor Correction Controllers August 8, 2013 The ISL6730A, ISL6730B, ISL6730C, ISL6730D are active Features Power Factor Correction (PFC) controller ICs that use a boost Reduce component size requirements topology. The controllers are suitable for AC/DC power systems, up to 2kW and over the universal line input. - Enables smaller, thinner AC/DC adapters - Choke and cap size can be reduced The ISL6730A, ISL6730B, ISL6730C, ISL6730D operate in - Lower cost of materials Continuous Conduction Mode (CCM). Accurate input current shaping is achieved with a current error amplifier. A patent Excellent power factor over line and load regulation pending breakthrough negative capacitance technology - Internal current compensation minimizes zero crossing distortion and reduces the magnetic - CCM Mode with Patent pending IP for smaller EMI filter components size. The small external components result in a low cost design without sacrificing performance. Better light load efficiency - Automatic pulse skipping The internally clamped 12.5V gate driver delivers 1.5A peak current to the external power MOSFET. The ISL6730A, - Programmable or automatic shutdown ISL6730B, ISL6730C, ISL6730D provide a highly reliable High reliable design system that is fully protected. Protection features include - Cycle-by-cycle current limit cycle-by-cycle overcurrent, over power limit, over-temperature, input brownout, output overvoltage and undervoltage - Input average power limit protection. - OVP and OTP protection - Input brownout protection The ISL6730A, ISL6730B provide excellent power efficiency and transitions into a power saving skip mode during light load Small 10 Ld MSOP package conditions, thus improving efficiency automatically. The ISL6730A, ISL6730B, ISL6730C, ISL6730D can be shut down Applications by pulling the FB pin below 0.5V or grounding the BO pin. The Desktop computer AC/DC adaptor ISL6730C, ISL6730D have no skip mode. Laptop computer AC/DC adaptor Two switching frequency options are provided. The ISL6730B, TV AC/DC power supply ISL6730D switch at 62kHz, and the ISL6730A, ISL6730C switch at 124kHz. AC/DC brick converters 100 V I + V LINE V OUT 95 90 85 ISL6730A, SKIP VCC 80 ISEN GATE ICOMP GND 75 ISL6730C VIN ISL6730 FB 70 COMP 65 BO VREG 60 0 20 40 60 80 100 OUTPUT POWER (W) FIGURE 1. TYPICAL APPLICATION FIGURE 2. PFC EFFICIENCY TABLE 1. KEY DIFFERENCES IN FAMILY OF ISL6730 VERSION ISL6730A ISL6730B ISL6730C ISL6730D Switching Frequency 124kHz 62kHz 124kHz 62kHz Skip Mode Yes-Fixed Yes-Fixed No No FN8258 Rev 1.00 Page 1 of 19 August 8, 2013 EFFICIENCY (%)ISL6730A, ISL6730B, ISL6730C, ISL6730D Pin Configuration ISL6730A, ISL6730B, ISL6730C, ISL6730D (10 LD MSOP) TOP VIEW GND 1 10 GATE ISEN 2 9 VCC ICOMP 3 8 VREG VIN 4 7 FB BO 5 6 COMP Pin Descriptions PIN I/O SYMBOL DESCRIPTION 1 - GND Ground pin. All voltage levels refer to this pin. 2 I ISEN Current sense pin. The current through this pin is proportional to the inductor current. 3 I/O ICOMP Current error amplifier output pin. 4 I VIN Input voltage sense. This pin provides the reference voltage to shape inductor current. Connect this pin to a resistor divider from the rectified input voltage. The resistor divider ratio is used to adjust the phase lag between input voltage and the input current. The phase lag is required to compensate the phase lead generated by the EMI filter. 5 I/O BO This pin should be decoupled to GND with a minimum 0.1F ceramic capacitor. The BO pin is a voltage follower, which will follow the DC voltage of the VIN pin. The BO pin is internally tied to GND through a resistor R . The decoupling capacitor provides ripple IS filtering. When the voltage at the BO pin (V ) drops below brownout voltage threshold, the controller enters shutdown mode BO and the gate drive is disabled. The BO pin will be disabled when the FB pin drops below the enabling threshold. 6 I/O COMP Output of the error amplifier. The voltage of the COMP pin sets the input power. During start-up, a small charge current will slowly ramp up the voltage of the COMP pin. 7 I FB Voltage feed back pin. Connect this pin to a resistor divider from the output. The resistor divider sets the output voltage. When the FB pin voltage exceeds 104% of the reference voltage, overvoltage-protection is triggered and gate drive is disabled. When the FB pin is below 10%, the device is put into shutdown mode. There is an internal pull-down current source for open loop protection. 8 - VREG Output of internal regulator. The voltage having a 2% tolerance over line, load and operating temperature. Bypass to GND with a 47nF low ESR capacitor. VREG can source up to 10mA. This pin is not recommended for usage other than bypass. 9 I VCC Power supply pin. The VCC pin should be decoupled to GND with a minimum 0.1F ceramic capacitor. 10 O GATE Push-pull gate drive for the external MOSFET. Output voltage is clamped at 12.5V. This pin provides typically 2A sink and 1.5A source capability. Ordering Information PART NUMBER PART TEMP. PACKAGE PKG. (Notes 1, 2, 3) MARKING RANGE (C) (Pb-Free) DWG. ISL6730AFUZ 6730A -40 to +125 10 Ld MSOP M10.118 ISL6730BFUZ 6730B -40 to +125 10 Ld MSOP M10.118 ISL6730CFUZ 6730C -40 to +125 10 Ld MSOP M10.118 ISL6730DFUZ 6730D -40 to +125 10 Ld MSOP M10.118 ISL6730AEVAL1Z Evaluation Board ISL6730BEVAL1Z Evaluation Board NOTES: 1. Add -T* suffix for tape and reel. Please refer to TB347 for details on reel specifications. 2. These Intersil Pb-free plastic packaged products employ special Pb-free material sets, molding compounds/die attach materials, and 100% matte tin plate plus anneal (e3 termination finish, which is RoHS compliant and compatible with both SnPb and Pb-free soldering operations). Intersil Pb-free products are MSL classified at Pb-free peak reflow temperatures that meet or exceed the Pb-free requirements of IPC/JEDEC J STD-020. 3. For Moisture Sensitivity Level (MSL), please see device information page. For more information on MSL please see techbrief TB363. FN8258 Rev 1.00 Page 2 of 19 August 8, 2013