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| (R) STIL04-P5 A.S.D.TM Application Specific Discretes AC inrush current limiter MAIN APPLICATIONS HIGH POWER DENSITY ADAPTER HIGH END TV POWER SUPPLY OPENED FRAME SMPS s s s FEATURES Inrush current limitation circuit for off-line power supply Dual non-sensitive unidirectional switches in a single package Suitable when space and efficiency are critical Active after short AC line drop out with a boost converter High repetitive forward and reverse off-state voltage (700V) s s s s s 5 23 1 4 PENTAWATT HV2 (in line) PIN OUT DESCRIPTION Pin out designation L Pt1 OUT Pt2 N Description AC Line (switch1) Pilot of power switch 1 Output (connected to Tab) Pilot of power switch 2 AC Neutral (switch 2) Position 1 2 3 4 5 BENEFITS Low consumption (Ipt= 20mA) High noise immunity: (dV/dt> 500V/s @ Tj=150C) Low reverse current losses Integrated pilot driver of the power switches Monolithic ASDTM planar technology for better robustness and reliability s s s s s Fig. A1: Bloc Diagram. Fig. A2: Basic connection. STIL04-P5 DRIVER STIL04-P5 Pt 1 Ipt1 Ipt Pt 1 Pt 2 DRIVER Pt 2 Ipt2 OUT OUT L N Ri Aux. Supply Main converter L N October 2002 - Ed: 3A 1/7 STIL04-P5 Functional Description The STIL04 is connected in parallel with the bridge diode and the inrush power resistor Ri (fig. A2). During start up, the two unidirectional ASDTM power switches of the STIL04 are opened. The inrush current flows through the diodes of the bridge and the external inrush power resistor Ri. Since the main converter turns ON, the auxiliary power supply coupled with the main transformer, supplies the energy required to close the two power switches of the STIL04. At the normal state, the two bottom diodes of the bridge rectifier and the two unidirectional switches of the STIL04 rectify the AC line current. When the STIL04 is used with a PFC boost converter, the inrush current circuit remains active after a short AC line dropout (see fig. A5). In that configuration, since the AC line disappears, the PFC controller and the auxiliary power supply of the STIL turns OFF. The two switches of the STIL are opened. The output bulk capacitor Cb is discharging and it is providing the energy to the main converter. When the AC line recovers, the two switches remain opened and recharging inrush current of the capacitor Cb is deviated and limited through the resistor Ri. When the capacitor is charged, the PFC turns ON again and the two switches of the STIL switch ON. More details on the design and operation of the driver circuit of figure A5 can be found in the application note "AN1600 - STIL: Inrush Current Limitation Device for Off-Line Power Converter". ABSOLUTE MAXIMUM RATINGS (Limiting value) Symbol VDout VRout Iout(AV) Parameter Repetitive forward (VDout) and reverse (VRout) off-state voltage Average on state current at the OUT terminal (180 conduction angle for the internal power switches) RMS on state current at the OUT terminal (180 conduction angle for the internal power switches) Non repetitive surge peak on-state current (Tj initial = 25C) I2t value - rating for fusing Critical rate of rise of on state current Ipt1 + Ipt2 = 20mA Storage temperature range Junction temperature range Tj (min) to Tj (max) Tj = 150C Value 700 4 Unit V A Iout(RMS) Tj = 150C 4.4 A ITSM I2t dIout/dt Tstg Tj tp = 10ms sinusoidal tp = 10ms Tj = 25C Tj = 150C 65 21 100 -40 to +150 0 to +150 A A2s A/s C C THERMAL PARAMETERS Symbol Rth(j-c) Rth(j-a) Junction to case Junction to ambient (minimum footprint) Parameter Value 2 60 Unit C/W 2/7 STIL04-P5 ELECTRICAL CHARACTERISTICS Symbol Ipt1 + Ipt2 VD(pt1) VD(pt2) Parameter Driver trigger current Test conditions VDout = 12V (DC) RL = 30 tp = 380s VDout = 12V (DC) RL = 30 Tj = 0C Tj = 25C Tj = 0C Tj = 25C Tj = 150C VR(pt1) VR(pt2) dVDout/dt IRout(off) Peak reverse driver voltage Dynamic voltage rising Max reverse current without driver current Max reverse current with driver current Threshold direct voltage for one power switch Tj = 25C Linear slope up to Tj = 150C VDout = 470V VRout = 700V Ipt1 = Ipt2 = open Tj = 25C Tj = 150C 0.2 8 500 5 300 300 0.75 55 1.1 0.9 80 1.4 0.6 Min. Typ. 12 10 0.85 0.8 0.45 V V/s A A A V m V 1 0.95 V Max. Unit 20 mA Direct pilot trigger voltage IRout(on) Vt0 Rd VF VDout = 400V Tj = 150C Ipt1 = Ipt2 = 10mA Iout(AV) = 4A Tj = 150C Tj = 150C Tj = 150C Dynamic direct resistance for Iout(AV) = 4A one power switch Maximum instantaneous direct forward voltage drop for one power switch Iout(AV) = 4A Power losses calculations When the input current is sinusoidal, the conducted power losses can be calculated by using the following formula: P = VT 0 . I out ( av ) + R d (I out ( av ) 8 x ) 2 If the output average current is 4Amps, VT0 and Rd of the electrical characteristics table can be used. For different output current please refer to the application note AN1600 that provides guidelines to estimate the correct values of VT0 and Rd. LIGHTNING SURGE IMMUNITY (IEC61000-4-5) During lightning surge transient voltage across the AC line, over current and over voltage stress are applied on all the components of the power supply. The STIL04 can sustain a maximum peak surge current of 500A as defined by the combine waveform generator (8/20s waveform as shown in fig. A3 and A4). Special recommendations for the lightning surge immunity: 1 - Check that the maximum peak surge current in the STIL stays below the limit specified above. 2 - Check that no over voltages are applied on the STIL and the bridge diode. 3 - In order to reduce the dynamic current stress (dIout/dt) through the structure of the STIL04, it is recommended to connect a differential mode choke coil in front of the STIL and the bridge diode. More details and design guidelines are provided in the application note "AN1600 - STIL: Inrush Current Limitation Device for Off-Line Power Converter". 3/7 STIL04-P5 Fig. A3: Surge test condition. Fig. A4: Surge current waveform. 1 STIL04-P5 Pt 1 DRIVER Pt 2 5Vdc 5 s 80A/Div IOUT Ipeak=500A IOUT OUT 0 VOUT L N Combine generator IOUT 0 Amps 1 Fig. A5: Basic connection with a PFC Boost preregulator. Ri by pass diode STIL04-P5 Pt 1 C2 R1 R2 C0 R C1 Vout OUT DRIVER Bridge Diode Pt 2 Cb L N PFC Control 4/7 STIL04-P5 Fig. 1-1: Non repetitive surge peak on-state current (sinusoidal pulse) and corresponding value of I2t. ITSM(A), It(As) 1000.0 Tj initial=25C ITSM ITSM Fig. 1-2: Non repetitive surge peak on-state current (sinusoidal pulse) and corresponding value of I2t. ITSM(A), It(As) 1000.0 Tj initial=150C 100.0 100.0 It 10.0 10.0 It tp(ms) 1.0 0.01 0.10 1.00 10.00 1.0 0.01 0.10 tp(ms) 1.00 10.00 Fig. 2: Relative variation of driver trigger current versus junction temperature (typical values). Ipt1 or Ipt2 [Tj] / Ipt1 or Ipt2 [Tj = 25C] 1.4 1.3 1.2 1.1 1.0 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0 25 50 75 100 125 150 Fig. 3: Relative variation of direct pilot voltage versus junction temperature (typical values). VDpt1 or VDpt2 [Tj] / VDpt1 or VDpt2 [Tj = 25C] 1.2 1.1 1.0 0.9 0.8 0.7 0.6 Tj(C) 0.5 0.4 0 25 50 Tj(C) 75 100 125 150 Fig. 4: Relative variation of thermal impedance junction to case versus pulse duration. K = [Zth(j-c)/Rth(j-c)] 1.E+00 Fig. 5-1: Reverse current versus junction temperature without driver current (typical values). IR(OUT)OFF(A) 1.E+02 Pt1 & Pt2 open VR(out)=700V 1.E+01 1.E+00 1.E-01 1.E-02 tp(s) 1.E-01 1.E-03 1.E-02 1.E-01 1.E+00 Tj(C) 1.E-03 0 25 50 75 100 125 150 5/7 STIL04-P5 Fig. 5-2: Reverse current versus junction temperature with driver current (typical values). Fig. 6: Forward voltage drop for one power switch versus junction temperature at the peak forward current(typical values). VF(V) 1.20 Ipt1 = Ipt2 =10mA VR(out)=400V IR(OUT)ON(A) 100.0 Iout(peak)=6.3A 1.16 1.12 10.0 1.08 1.04 Tj(C) Tj(C) 1.0 0 25 50 75 100 125 150 1.00 0 25 50 75 100 125 150 Fig. 7-1: Peak forward voltage drop versus peak forward output current for one power switch at Tj = 25C (typical and maximal values). IOUT(A) 12 11 10 9 8 7 6 5 4 3 2 1 0 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 Typical Maximum Tj=25C Fig. 7-2: Peak forward voltage drop versus peak forward output current for one power switch at Tj = 150C (typical values and maximal values). IOUT(A) 12 11 10 9 8 7 6 5 4 3 2 Typical Maximum Tj=150C VF(V) 1 0 0.7 0.8 0.9 1.0 1.1 VF(V) 1.2 1.3 1.4 1.5 1.6 1.7 Fig. 8: Relative variation of dV/dt immunity versus junction temperature (typical values). dVDOUT [Tj] / dVDOUT [Tj=150C] 20 VDout=470V 18 16 14 12 10 8 6 4 2 0 25 50 75 100 125 150 Tj(C) 6/7 STIL04-P5 PACKAGE MECHANICAL DATA PENTAWATT HV2 REF. A C H2 L7 DIMENSIONS Millimeters Min. Max. 4.70 1.40 2.72 0.51 0.82 Inches Min. 0.165 0.044 0.098 0.015 0.026 Max. 0.185 0.055 0.107 0.020 0.032 A C 4.19 1.14 2.5 0.38 0.66 L6 D E D L3 F G G2 2.54 Typ. 7.62 Typ. 10.04 10.29 0.10 Typ. 0.30 Typ. 0.395 0.405 E H2 L3 L6 G G2 F 23.5 Typ. 9.90 10.16 0.925 Typ. 0.389 0.400 L7 1.52 Typ. 0.059 Typ. Order code STIL04-P5 Marking STIL04 Package PENTAWATT HV2 (in line) Weight 1.9 g. Delivery mode Tube Base qty 50 Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. The ST logo is a registered trademark of STMicroelectronics (c) 2002 STMicroelectronics - Printed in Italy - All rights reserved. STMicroelectronics GROUP OF COMPANIES Australia - Brazil - Canada - China - Finland - France - Germany Hong Kong - India - Israel - Italy - Japan - Malaysia - Malta - Morocco - Singapore Spain - Sweden - Switzerland - United Kingdom - United States. http://www.st.com 7/7 |
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