ACS120 STMICROELECTRONICS | Alldatasheet
Document overview
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- PDF pages: 17
Technical content
Features
Blocking voltage: VDRM / VRRM = +/- 700 V Avalanche controlled: VCL typ. = 1100 V Nominal conducting current: IT(RMS) = 2 A Gate triggering current: IGT < 10 mA High noise immunity: static dV/dt > 500 V/µs – Needs no more external protection snubber or varistor – Enables equipment to meet IEC 61000-4-5 – Reduces component count up to 80% – Interfaces directly with the micro controller – Eliminates any gate kick back on the micro- controller – Allows straightforward connection of several AC switches on same cooling pad
Applications
AC static switching in appliance control systems Drive of low power high inductive or resistive loads like: – Relay, valve, solenoid, dispenser – Pump, fan, micro-motor – Defrost heater
Description
The ACS120 belongs to the AC line switch family. This high-performance switch circuit is able to control a load of up to 2 A. The ACS switch embeds a high-voltage clamping 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. Figure 1. Functional diagram OUT Output to connect to the load.
1 Characteristics
Table 1. Absolute ratings (limiting values)
2 ATO-220FPAB T C = 117 °C
- According to test described by IEC 61000-4-5 standard and Figure 17.
Table 2. Switch Gate characteristics (maximum values) Table 3. Thermal resistances
- S = Copper surface under tab
Table 4. Parameter description Table 5. Electrical characteristics
Figure 2. Maximum power dissipation versus Figure 3. On-state RMS current versus case Figure 4. On-state RMS current versus ambient Figure 5. Relative variation of thermal
6 FPð
Figure 6. Relative variation of gate trigger, Figure 7. Relative variation of static dV/dt
2 AC line switch basic application
pump, fan and defrost heaters. with no additional turn-off snubber, an inductive load up to 2 A. Figure 14. Typical application diagram
2.1 Protection against overvo ltage: the best choice is ACS
2.2 High inductive load switch-o ff: turn-off overvoltage clamping
inductance of the load is dissipated in the clamping section that is designed for this purpose. Note: Same working principle described in item 2.2 is valid for both current directions. Figure 15. Turn-off operation of the ACS120 Figure 16. ACS120 switch static characteristic
2.3 Alternating current mains transient voltage ruggedness
Figure 18. The ACS120 recovers its blocking voltage capability after the surge (switch-off times on each AC mains voltage polarity. Figure 17. Overvoltage ruggedness test circuit for resistive and inductive loads Figure 18. Current and voltage of the ACS120 during IEC 61000-4-5 standard test with
3 Package information
specifications, grade definitions and product status are available at: www.st.com.
3.1 TO-220FPAB package information
Figure 19. TO-220FPAB package outline
Table 6. TO-220FPAB package mechanical data
- Inches only for reference.
3.2 DPAK package information
Figure 20. DPAK package outline specified dimensions are guaranteed.
Figure 21. Footprint (dimensions in mm) Table 7. DPAK package mechanical data
- Inches only for reference.
3.3 TO-220AB package information
Figure 22. TO-220AB package outline
- Resin gate position accepted in each of the two position as well as the symmetrical opposites.
Table 8. TO-220AB package mechanical data
- Inches only for reference.
4 Ordering information
Figure 23. Ordering information scheme Table 9. Ordering information
5 Revision history
Table 10. Document revision history Apr-2004 1 Previous release. 28-Jan-2011 2 Added ECOPACK statement. Updated T C values in Table 1. 24-Mar-2022 5 Updated Figure 20.