L4984D Datasheet, PDF (1/35 Pages) STMicroelectronics – Inductor saturation protection

SSOP10
L4984D
CCM PFC controller
Datasheet - production data
Table 1. Device summary
Order code
Package
L4984D
L4984DTR
SSOP10
Packaging
Tube
Tape and reel
Features
• Line-modulated fixed-off-time (LM-FOT)
control of CCM-operated PFC pre-regulators
• Proprietary LM-FOT modulator for nearly fixed-
frequency operation
• Proprietary multiplier design for minimum THD
of AC input current
• Fast “bi-directional” input voltage feedforward
(1/V² correction)
• Accurate adjustable output overvoltage
protection
• Protection against feedback loop failure
(latched shutdown)
• Inductor saturation protection
• AC brownout detection
• Digital leading-edge blanking on current sense
• Soft-start
• 1% (at Tj = 25 °C) internal reference voltage
• - 600 / + 800 mA totem pole gate driver with
active pull-down during UVLO and voltage
clamp
• SSOP10 package
Applications
• PFC pre-regulators for:
– IEC61000-3-2 and JEIDA-MITI compliant
SMPS in excess of 1 KW
– Desktop PC, server, web server
April 2013
This is information on a product in full production.
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