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FL7930BMX fiches techniques PDF

Fairchild Semiconductor - Single-Stage Flyback and Boundary-Mode PFC Controller

Numéro de référence FL7930BMX
Description Single-Stage Flyback and Boundary-Mode PFC Controller
Fabricant Fairchild Semiconductor 
Logo Fairchild Semiconductor 





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FL7930BMX fiche technique
October 2013
FL7930B
Single-Stage Flyback and Boundary-Mode PFC
Controller for Lighting
Features
Additional OVP Detection Pin
VIN-Absent Detection
Maximum Switching Frequency Limitation
Internal Soft-Start and Startup without Overshoot
Internal Total Harmonic Distortion (THD) Optimizer
Precise Adjustable Output Over-Voltage Protection
Open-Feedback Protection and Disable Function
Zero Current Detector (ZCD)
150 μs Internal Startup Timer
MOSFET Over-Current Protection (OCP)
Under-Voltage Lockout with 3.5 V Hysteresis
Low Startup and Operating Current
Totem-Pole Output with High State Clamp
+500/-800 mA Peak Gate Drive Current
8-Pin, Small-Outline Package (SOP)
Applications
Ballast
General LED Lighting
Industrial, Commercial, and Residential Fixtures
Outdoor Lighting: Street, Roadway, Parking,
Construction, Ornamental LED Lighting Fixtures
Description
The FL7930B is an active power factor correction
(PFC) controller for boost PFC applications that
operate in critical conduction mode (CRM). It uses a
voltage-mode PWM that compares an internal ramp
signal with the error amplifier output to generate a
MOSFET turn-off signal. Because the voltage-mode
CRM PFC controller does not need rectified AC line
voltage information, it saves the power loss of an input
voltage sensing network necessary for a current-mode
CRM PFC controller.
FL7930B provides over-voltage protection (OVP), open-
feedback protection, over-current protection (OCP),
input-voltage-absent detection, and under-voltage
lockout protection (UVLO). The additional OVP pin can
be used to shut down the boost power stage when
output voltage exceeds OVP level due to the resistors
that are connected at INV pin are damaged. The
FL7930B can be disabled if the INV pin voltage is lower
than 0.45 V and the operating current decreases to a
very low level. Using a new variable on-time control
method, total harmonic distortion (THD) is lower than in
conventional CRM boost PFC ICs.
Ordering Information
Part Number
Operating
Temperature Range
FL7930BMX_G
-40 to +125°C
Top Mark
FL7930BG
Package
8-Lead Small Outline Package (SOP)
Packing
Method
Tape & Reel
© 2010 Fairchild Semiconductor Corporation
FL7930B • Rev. 1.0.4
www.fairchildsemi.com

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