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STIL
Inrush Current Limitation Circuit
Datasheet | Orderable Products | Features and Description | Documentation
 
Datasheet
Reference Title
STIL AC INRUSH CURRENT LIMITER
(07 Dec 2005, 153KB) Download
 
Orderable Products
Device Status RoHS Package Purchase
STIL04-T5 Active Converted SOT 2
STIL04-P5 Active Converted PENTAWATT 5
STIL08-T5 Active Converted SOT 2
STIL06-T5 Active Converted SOT 2  
 
Features and Description
Reduced power losses and higher efficiency
Reduced size
Responsiveness during a.c. ON/ OFF cycles
Absence of hot spots during nominal operation.
The charge of the bulk capacitor during start-up of an off-line AC/DC power supply generates a surge current also known as an inrush current. If nothing is done to limit the level of this inrush current, the protection wire fuse of the power supply might blow up and the circuit breaker of the main power distribution might be forced to open. Targeting the 100 to 150W power supplies, the STILis a circuit combining two unidirectional switches for use in a smart configuration of a primary rectification bridge, mixing diode rectification and SCR. We call this circuit a Half Controlled Rectifier Bridge (HCRB).
The STIL is the monolithic integration of two unidirectional switches developed in the robust ASD technology, a proprietary technology of ST. The STILxx should be used in a smart configuration of an AC rectification bridges, mixing rectification diodes and SCRs, thus achieving a HCRB. It makes the limitation of the inrush current with a higher efficiency possible while offering a higher integration than traditional inrush current limitation circuits.
ASD technology is especially suitable for this kind of application since it provides the solution to the traditional trade-off of the SCR between dV/dt immunity and power losses.
Basic power supply front-end
Basic power supply front-end using STIL with a rectification SCR bridge
Main applications:
High power density switching power supply
Server and Telecom power supplies
Game station power supplies
High end TV displays
Portable equipment adaptators
Benefits:
Low consumption (IPt= 20mA)
High noise immunity: dV/dt> 1000V/µs @ Tj=125°C
Low reverse current losses
Integrated pilot driver of the power switches
Suitable where efficiency and space are critical
Documentation
Application Notes
Reference Title
AN1600 STIL: INRUSH CURRENT LIMITATION DEVICE FOR OFF-LINE POWER CONVERTER
(22 Oct 2002, 162KB) Download
AN1692 STIL02 DEVICE USED IN DISCONTINOUS POWER FACTOR CORRECTION
(27 Mar 2003, 536KB) Download
 
Related Information
Application Notes
AN1600 - STIL: Inrush Current Limitation device for off-line power converter (PDF 162K)
Advertising Campaigns Solutions: Innovative Products
STIL08 Single Chip Current limiter

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