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Submission: On February 16 via api (February 16th 2023, 12:18:21 am UTC) from US — Scanned from DE

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 * Home
 * Applications
 * Industrial
 * Power Supplies and Converters
 * AC-DC Converters
 * PFC Converter - Single Phase Input
 * L4986
 * L4986A


L4986ATR


L4986BTR

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L4986A








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 * L4986A Datasheet (PDF)
 * Material Declaration

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L4986A


ACTIVE


CONTINUOUS CONDUCTION MODE (CCM) PFC CONTROLLER WITH HIGH VOLTAGE STARTUP AND
POWER GOOD
LEARN MORE ABOUT L4986A

Quantity $ per Unit Savings 1 - 9$2.900%10 - 24$2.6110%25 - 99$2.4615%100 -
249$2.1426%250 - 499$2.0330%500$1.8237% 500 + Contact Sales


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Parameter

Parameter NameParameter ValueECCN USEAR99ECCN EUNECPacking TypeTubeRoHs
compliantEcopack2GradeIndustrialPackage NameSSOP 10

Description

The L4986 is a peak current-mode PFC controller for boost converter with a
proprietary multiplier “emulator” which in addition to the innovative THD
optimizers guarantee very low Total Harmonic Distortion (THD) performance in all
operating conditions. The device comes in a pin SO package and offers a high
performance/low-component count solution for CCM-operated boost PFC
pre-regulators in EN61000-3-2 and JEIDA-MITI compliant applications, in a power
range that spans from few hundred W to some kW.


The device, thanks to a proprietary off-time modulator, operates in quasi-fixed
frequency in all operating conditions. Two options are available, 65 kHz for A
and 130 kHz for B.


The 800 V high voltage start-up block includes also the circuitry to discharge
the X-capacitors of the EMI filter to a safe level. This allows the unit to meet
safety regulation (such as IEC 61010-1 or IEC 62368-1) without using the
traditional discharge resistor in parallel to the X-capacitors.


The device features low consumption and disable functions allowing usage in
applications supposed to comply even with the latest energy saving requirements
issued by Energy Star, the Department of Energy (DoE) in the United States, the
European Code of Conduct, the European Union’s Ecodesign Directive, and other
guidelines.


In addition to an overvoltage protection able to keep the output voltage under
control during transient conditions, the IC is provided also with a protection
against feedback loop failures or erroneous settings and boost inductor
saturation. The brownout protection function allows to design medical equipment
according to the latest regulations driven by IEC 60601-1-2 which requires the
output regulation in case of mains dips lasting up to 500 msec. Soft-start
limits the peak current.


The PG_IN is an adjustable input comparator suitable for monitoring the PFC
output voltage and accordingly driving a logic signal exiting from PG_OUT pin.
The totem-pole output stage, capable of 0.7 A source and 1.5 A sink current, is
suitable for big MOSFET or IGBT drive.

Key features

Key features
 * Peak current mode CCM-operated
 * 800 V high voltage startup with integrated input voltage sensing
 * Active input filter capacitor discharge
 * Proprietary multiplier “emulator” with minimum THD of line current in all
   operating conditions (CCM and DCM)
 * Extremely few external components
 * Protections: feedback loop failure, OVP, OCP, inductor saturation, brown-in,
   brownout (compliant to medical SMPS standards)
 * Inductor current sense
 * Disable and low consumption function
 * In-rush current monitoring
 * Soft-start for smooth startup
 * 1.2% (@ Tj = 25 °C) internal reference voltage
 * 65 kHz (A version) and 130 kHz (B version) switching frequency
 * PGOOD_OUT and adjustable PGOOD_IN
 * SSOP10 package


Associated Products
EVL4986A-1KWBL
Low THD-High Efficiency, 1KW Bridgeless CCM-PFC ...
$269.50
In stock
Add to Cart

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estore.st.com Open in urlscan Pro 151.101.193.124 Public Scan

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