FAN9611 Controllers Datasheet

FAN9611 Datasheet, PDF, Equivalent


Part Number

FAN9611

Description

Interleaved Dual BCM PFC Controllers

Manufacture

Fairchild Semiconductor

Total Page 30 Pages
Datasheet
Download FAN9611 Datasheet


FAN9611
February 2013
FAN9611
Interleaved Dual BCM PFC Controllers
Features
Sync-Lock™ Interleaving Technology for 180°
Out-of-Phase Synchronization Under All Conditions
Automatic Phase Disable at Light Load
Dead-Phase Detect Protection
2.0 A Sink, 1.0 A Source, High-Current Gate Drivers
High Power Factor, Low Total Harmonic Distortion
Voltage-Mode Control with (VIN)2 Feedforward
Closed-Loop Soft-Start with User-Programmable
Soft-Start Time for Reduced Overshoot
Minimum Restart Frequency to Avoid Audible Noise
Maximum Switching Frequency Clamp
Brownout Protection with Soft Recovery
Non-Latching OVP on FB Pin and Latching Second-
Level Protection on OVP Pin
Open-Feedback Protection
Power-Limit and Current Protection for Each Phase
Low Startup Current of 80 µA Typical
Works with DC and 50 Hz to 400 Hz AC Inputs
Applications
100-1000 W AC-DC Power Supplies
Large Screen LCD-TV, PDP-TV, RP-TV Power
High-Efficiency Desktop and Server Power Supplies
Networking and Telecom Power Supplies
Solar Micro Inverters
Description
The FAN9611 interleaved dual Boundary-Conduction-
Mode (BCM) Power-Factor-Correction (PFC) controller
operates two parallel-connected boost power trains 180°
out of phase. Interleaving extends the maximum practical
power level of the control technique from about 300 W to
greater than 800 W. Unlike the continuous conduction
mode (CCM) technique often used at higher power
levels, BCM offers inherent zero-current switching of the
boost diodes, which permits the use of less expensive
diodes without sacrificing efficiency. Furthermore, the
input and output filters can be smaller due to ripple
current cancellation and effective doubling of the
switching frequency.
The converters operate with variable frequency, which is
a function of the load and the instantaneous input /
output voltages. The switching frequency is limited
between 16.5 kHz and 525 kHz. The Pulse Width
Modulators (PWM) implement voltage-mode control with
input voltage feedforward. When configured for PFC
applications, the slow voltage regulation loop results in
constant on-time operation within a line cycle. This PWM
method, combined with the BCM operation of the boost
converters, provides automatic power factor correction.
The controller offer bias UVLO of 10 V / 7.5 V, input
brownout, over-current, open-feedback, output over-
voltage, and redundant latching over-voltage protections.
Furthermore, the converters’ output power is limited
independently of the input RMS voltage. Synchronization
between the power stages is maintained under all
operating conditions.
Related Resources
Evaluation Board: FEBFAN9611_S01U300A
© 2008 Fairchild Semiconductor Corporation
FAN9611 • Rev. 1.1.7
Figure 1. Simplified Application Diagram
www.fairchildsemi.com

FAN9611
Ordering Information
Part Number
Package
FAN9611MX
16-Lead, Small Outline Integrated Circuit (SOIC)
This device passed wave soldering test by JESD22A-111.
Packing Method
Tape and Reel
Packing
Quantity
2,500
Package Outlines
Figure 2. SOIC-16 (Top View)
Thermal Resistance Table
Package
16-Lead SOIC
Suffix
M
Thermal Resistance
ΘJL(1)
35°C/W
ΘJA(2)
50 – 120°C/W(3)
Notes:
1. Typical ΘJL is specified from semiconductor junction to lead.
2. Typical ΘJA is dependent on the PCB design and operating conditions, such as air flow. The range of values
covers a variety of operating conditions utilizing natural convection with no heatsink on the package.
3. This typical range is an estimate; actual values depend on the application.
© 2008 Fairchild Semiconductor Corporation
FAN9611 • Rev. 1.1.7
2
www.fairchildsemi.com


Features FAN9611 — Interleaved Dual BCM PFC Con trollers February 2013 FAN9611 Interl eaved Dual BCM PFC Controllers Feature s  Sync-Lock™ Interleaving Technol ogy for 180° Out-of-Phase Synchronizat ion Under All Conditions  Automatic Phase Disable at Light Load  Dead-Ph ase Detect Protection  2.0 A Sink, 1 .0 A Source, High-Current Gate Drivers  High Power Factor, Low Total Harmon ic Distortion  Voltage-Mode Control with (VIN)2 Feedforward  Closed-Loop Soft-Start with User-Programmable Soft -Start Time for Reduced Overshoot  M inimum Restart Frequency to Avoid Audib le Noise  Maximum Switching Frequenc y Clamp  Brownout Protection with So ft Recovery  Non-Latching OVP on FB Pin and Latching Second- Level Protecti on on OVP Pin  Open-Feedback Protect ion  Power-Limit and Current Protect ion for Each Phase  Low Startup Curr ent of 80 µA Typical  Works with DC and 50 Hz to 400 Hz AC Inputs Applicat ions  100-1000 W AC-DC Power Supplies  Large Screen LCD-TV, PDP-TV, RP-TV Power  High-Efficiency.
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