ACS108-8SA-AP

ACS108-8SA Datasheet 0.8 A - 800 V overvoltage protected AC switch (ACS™) Features • • • • G OUT COM • TO-92 • OUT Applications • G COM OUT G Enables equipment to meet IEC 61000-4-5 surge with overvoltage crowbar technology High noise immunity against static dV/dt and IEC 61000-4-4 burst Needs no external protection snubber or varistor Reduces component count by up to 80% and Interfaces directly with the microcontroller Common package tab connection supports connection of several alternating current switches on the same cooling pad VCL gives headroom before clamping then crowbar action • COM Common drive reference to connect to the mains Output to connect to the load. Gate input to connect to the controller through gate resistor Product status link ACS108-8SA Product summary IT(RMS) 0.8 A VDRM, VRRM 800 V IGT 10 mA Alternating current on/off static switching in appliances and industrial control systems Driving low power high inductive or resistive loads like: – relay, valve, solenoid, dispenser – pump, fan, low power motor, door lock, air flow dumper – lamp Description The ACS108-8SA belongs to the AC switch range (built with A. S. D.® technology). This high performance switch can control a load of up to 0.8 A. This device switch includes an overvoltage crowbar structure to absorb the inductive turn-off energy, and a gate level shifter driver to separate the digital controller from the main switch. It is triggered with a negative gate current flowing out of the gate pin. Note: ®: A.S.D. is a registered trademark of STMicroelectronics Note: TM: ACS is a trademark of STMicroelectronics DS12901 - Rev 1 - February 2019 For further information contact your local STMicroelectronics sales office. www.st.com ACS108-8SA Characteristics 1 Characteristics Table 1. Absolute maximum ratings (Tamb = 25 °C, unless otherwise specified) Symbol IT(RMS) ITSM I2t dI/dt (1) Parameter On-state rms current (full sine wave), S = 5cm² Non repetitive surge peak on-state current Tj initial = 25 °C, (full cycle sine wave) I2t for fuse selection Critical rate of rise on-state current IG = 2 x IGT, tr ≤ 100 ns Value Unit Tamb = 64 °C 0.45 Ttab = 76 °C 0.8 tp = 20 ms 13 tp = 16.7 ms 13.7 tp = 10 ms 1.1 A2s f = 120 Hz, Tj = 125 °C 100 A/μs 2 kV A A VPP Non repetitive line peak pulse voltage PG(AV) Average gate power dissipation Tj = 125 °C 0.1 W VGM Peak positive gate voltage Tj = 125 °C 10 V IGM Peak gate current (tp = 20 μs) Tj = 125 °C 1 A Tstg Storage temperature range -40 to +150 °C Operating junction temperature range -30 to +125 °C Tj 1. according to test described by standard IEC 61000-4-5, see Figure 15. Overvoltage ruggedness test circuit for resistive and inductive loads, Tamb = 25 °C (conditions equivalent to IEC 61000-4-5 standard) for conditions Table 2. Electrical characteristics (Tj = 25 °C, unless otherwise specified) Symbol IGT (1) VGT VGD Test conditions Quadrant VOUT = 12 V, RL = 33 Ω II - III VOUT = VDRM, RL = 3.3 kΩ, Tj = 125 °C II - III Value Unit Max. 10 mA Max. 1.0 V Min. 0.15 V IH IOUT = 100 mA Max. 10 mA IL IG = 1.2 x IGT Max. 25 mA dV/dt (dI/dt)c VCL VOUT = 402 V, gate open, Tj = 125 °C VOUT = 536 V, gate open, Tj = 125 °C Min. 2000 400 V/μs Without snubber (15 V/μs), Tj = 125 °C, turn-off time ≤20 ms Min. 2 A/ms ICL = 0.1 mA, tp = 1 ms Min. 850 V 1. Minimum IGT is guaranteed at 10% of IGT max. DS12901 - Rev 1 page 2/13 ACS108-8SA Characteristics Table 3. Static electrical characteristics Symbol VTM (1) Test conditions Value Unit ITM = 1.1 A, tp = 500 μs Tj = 25 °C Max. 1.3 V VT0 Threshold voltage Tj = 125 °C Max. 0.85 V Rd(1) Dynamic resistance Tj = 125 °C Max. 300 mΩ 2 µA 0.2 mA (1) IDRM IRRM Tj = 25 °C VOUT = VDRM/ VRRM Tj = 125 °C Max. 1. For both polarities of OUT pin referenced to COM pin Table 4. Thermal characteristics Symbol DS12901 - Rev 1 Parameter Max. value Rth(j-l) Junction to lead (AC) 60 Rth(j-a) Junction to ambient 150 Unit °C/W page 3/13 ACS108-8SA Characteristics (curves) 1.1 Characteristics (curves) Figure 1. Maximum power dissipation versus rms on-state current 0.9 P (W) Figure 2. On-state rms current versus ambient temperature 0.9 0.8 α =180 ° 0.8 0.7 0.7 0.6 0.6 0.5 0.5 0.4 0.4 0.3 TO-92 0.3 0.2 0.2 180° 0.1 Single layer Printed circuit board FR4 0.1 IT(RMS) ( A) 0.0 0.0 Ta °C Natural convection 0.0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 Figure 3. Relative variation of thermal impedance junction to ambient versus pulse duration 1.00 IT(RMS) (A) α = 180° K=[Zth(j-a) /Rth(j-a) ] 0 25 50 75 100 125 Figure 4. Relative variation of holding and latching current versus junction temperature 3.0 IH, I L [T j] / IH, IL [T j=25 ° C] Zth(j -a) 2.5 IL 2.0 1.5 0.10 IH TO-92 1.0 0.5 t P (s) 0.01 1.0E-03 DS12901 - Rev 1 Tj (°C) 0.0 1.0E-02 1.0E-01 1.0E+00 1.0E+01 1.0E+02 1.0E+03 -50 -25 0 25 50 75 100 125 page 4/13 ACS108-8SA Characteristics (curves) Figure 5. Relative variation of IGT and VGT versus junction temperature 3.5 IGT, VGT [T j ] / IGT, VGT, [ Tj =25 °C] 3.0 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 IGT Q2 IGT Q3 2.5 2.0 1.5 1.0 VGT Q2-Q3 0.5 Tj (°C) 0.0 -50 -25 0 25 50 75 100 125 Figure 7. Non repetitive surge peak on-state current for a sinusoidal pulse 1.E+03 Figure 6. Surge peak on-state current versus number of cycles ITSM(A) ITSM(A) t=20ms One cycle Non repetitive Tj initial=25 °C TO-92 Repetitive Tlead = 76 °C 1 10 100 1000 Figure 8. On-state characteristics (maximum values) 100.00 ITM(A) Sinusoidal pulse, tp < 10 ms Tj initial = 25 °C ITSM 1.E+02 Number of cycles 10.00 1.E+01 1.00 Tj=125 °C 1.E+00 Tj max.: Tj=25 °C Vto = 0.85 V VTM(V) t p(ms) 1.E-01 0.01 DS12901 - Rev 1 0.10 Rd = 300 mΩ 0.10 1.00 10.00 0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 page 5/13 ACS108-8SA Characteristics (curves) Figure 9. Relative variation of critical rate of decrease of main current versus junction temperature 2.5 (dI/dt) c [T j ] / (dI/dt)c [Tj =125 °C] Figure 10. Relative variation of static dV/dt immunity versus junction temperature (typical values above 5 kV/µs) 5 dV/dt [ T j ] / dV/dt [ T j =125°C] VD =VR=536V 2.0 4 1.5 3 1.0 2 0.5 1 Tj (°C) 0.0 Tj (°C) 25 35 45 55 65 75 85 95 105 115 125 0 25 Figure 11. Relative variation of leakage current versus junction temperature 1.0E+00 50 75 100 125 Figure 12. Relative variation of critical rate of decrease of main current (di/dt)c versus (dV/dt)c IDRM/IRRM [Tj;V DRM/ VRRM]/IDRM/IRRM [Tj=125°C;800 V] 5.0 (dI/dt) c [ (dV/dt) c ] / Specified(dI/dt ) c Tj =125 °C 4.5 4.0 1.0E-01 3.5 VDRM=VRRM=800 V 3.0 VDRM=VRRM=600 V 2.5 2.0 1.0E-02 1.5 1.0 0.5 Tj (°C) (dV/dt) c (V/µs) 0.0 1.0E-03 25 DS12901 - Rev 1 50 75 100 125 0.1 1.0 10.0 100.0 page 6/13 ACS108-8SA Alternating current mains switch - basic application 2 Alternating current mains switch - basic application The ACS108 switch is triggered by a negative gate current flowing from the gate pin G. The switch can be driven directly by the digital controller through a resistor as shown in Figure 13. Typical application schematic Thanks to its overvoltage protection and turn-off commutation performance, the ACS108 switch can drive a small power high inductive load with neither varistor nor additional turn-off snubber. Figure 13. Typical application schematic Lamp Solenoid Motor M AC Mains OUT Vss MCU ACS108 Rg = 220 Ohm GATE Vdd COM 2.1 Protection against overvoltage: the best choice is ACS In comparison with standard Triacs the ACS108 is over-voltage self-protected, as specified by the parameter VCL. This feature is useful in two operating conditions: in case of turn-off of very inductive load, and in case of surge voltage that can occur on the electrical network. 2.1.1 High inductive load switch-off: turn-off overvoltage clamping With high inductive and low rms current loads the rate of decrease of the current is very low. An overvoltage can occur when the gate current is removed and the OUT current is lower than IH. As shown in Figure 14. Switching off of a high inductive load - typical clamping capability of ACS108 (Tamb = 25 °C), at the end of the last conduction half-cycle, the load current decreases ① . The load current reaches the holding current level IH ② , and the ACS turns off ③ . The water valve, as an inductive load (up to 15 H), reacts as a current generator and an overvoltage is created, which is clamped by the ACS ④ . The current flows through the ACS avalanche and decreases linearly to zero. During this time, the voltage across the switch is limited to the DS12901 - Rev 1 page 7/13 ACS108-8SA Protection against overvoltage: the best choice is ACS clamping voltage VCL. The energy stored in the inductance of the load is dissipated in the clamping section that is designed for this purpose. When the energy has been dissipated, the ACS voltage falls back to the mains voltage value (230 V rms, 50 Hz) ⑤. Figure 14. Switching off of a high inductive load - typical clamping capability of ACS108 (Tamb = 25 °C) 2.1.2 Alternating current mains transient voltage ruggedness The ACS108 switch is able to withstand safely the AC mains transients either by clamping the low energy spikes or by breaking-over when subjected to high energy shocks, even with high turn-on current rises. The test circuit shown in Figure 15. Overvoltage ruggedness test circuit for resistive and inductive loads, Tamb = 25 °C (conditions equivalent to IEC 61000-4-5 standard) is representative of the final ACS108 application, and is also used to test the AC switch according to the IEC 61000-4-5 standard conditions. Thanks to the load limiting the current, the ACS108 switch withstands the voltage spikes up to 2 kV above the peak mains voltage. The protection is based on an overvoltage crowbar technology. Actually, the ACS108 breaks over safely as shown in Figure 16. Typical current and voltage waveforms across the ACS108 (+2 kV surge, IEC 61000-4-5 standard). The ACS108 recovers its blocking voltage capability after the surge (switch off back at the next zero crossing of the current). Such non-repetitive tests can be done 10 times on each AC mains voltage polarity. DS12901 - Rev 1 page 8/13 ACS108-8SA Protection against overvoltage: the best choice is ACS Figure 15. Overvoltage ruggedness test circuit for resistive and inductive loads, Tamb = 25 °C (conditions equivalent to IEC 61000-4-5 standard) + 2kV Surge generator Rgenerator Filtering unit Cc Model of the load L = 5 μH AC mains 230 V RMS, 50 Hz R = 150 Ω OUT ACS108 GATE Rg = 220 Ω COM Figure 16. Typical current and voltage waveforms across the ACS108 (+2 kV surge, IEC 61000-4-5 standard) DS12901 - Rev 1 page 9/13 ACS108-8SA Package information 3 Package information In order to meet environmental requirements, ST offers these devices in different grades of ECOPACK® packages, depending on their level of environmental compliance. ECOPACK® specifications, grade definitions and product status are available at: www.st.com. ECOPACK® is an ST trademark. 3.1 TO-92 package information • • Epoxy meets UL94, V0 Lead free plating + halogen-free molding resin Figure 17. TO-92 package outline c A a B C b D F E Table 5. TO-92 package mechanical data Dimensions Ref. Inches(1) Millimeters Min. A Typ. Max. Min. 1.35 B Typ. 0.0531 4.70 C Max. 0.1850 2.54 0.1000 D 4.40 0.1732 E 12.70 0.5000 F 3.70 0.1457 a 0.50 0.0197 b 1.27 c 0.500 0.48 0.0189 1. Inches dimensions given for information DS12901 - Rev 1 page 10/13 ACS108-8SA Ordering information 4 Ordering information Figure 18. Ordering information scheme ACS 1 08 - 8 S A -TR AC switch series Number of switches Current 08 = 0.8 A rms Voltage 8 = 800 V Gate current S = 10 mA Package A = TO-92 Packing TR = Tape and reel 13” (TO-92, 2000 pieces) AP = Ammopack (TO-92, 2000 pieces) Blank = bulk (TO-92, 2500 pieces) Table 6. Ordering information Order code Marking Package Weight ACS108-8SA ACS108-8SA-TR ACS108 8SA(1) ACS108-8SA-AP TO-92 0.2 g Base qty. Packing mode 2500 Bulk 2000 Tape and reel 2000 Ammopack 1. First row = ACS108, second row = 8SA DS12901 - Rev 1 page 11/13 ACS108-8SA Revision history Table 7. Document revision history DS12901 - Rev 1 Date Version 25-Feb-2019 1 Changes Initial release. page 12/13 ACS108-8SA IMPORTANT NOTICE – PLEASE READ CAREFULLY STMicroelectronics NV and its subsidiaries (“ST”) reserve the right to make changes, corrections, enhancements, modifications, and improvements to ST products and/or to this document at any time without notice. Purchasers should obtain the latest relevant information on ST products before placing orders. ST products are sold pursuant to ST’s terms and conditions of sale in place at the time of order acknowledgement. Purchasers are solely responsible for the choice, selection, and use of ST products and ST assumes no liability for application assistance or the design of Purchasers’ products. No license, express or implied, to any intellectual property right is granted by ST herein. Resale of ST products with provisions different from the information set forth herein shall void any warranty granted by ST for such product. ST and the ST logo are trademarks of ST. All other product or service names are the property of their respective owners. Information in this document supersedes and replaces information previously supplied in any prior versions of this document. © 2019 STMicroelectronics – All rights reserved DS12901 - Rev 1 page 13/13