ACST12 STMICROELECTRONICS | Alldatasheet

Document overview

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Technical content

Features

■ Triac with overvoltage crowbar technology ■ Low IGT (<10 mA) or high immunity (IGT<35 mA) version ■ High noise immunity: static dV/dt > 2000 V/µs Benefits ■ Enables equipment to meet IEC 61000-4-5 ■ High off-state reliability with planar technology ■ Need no external over voltage protection ■ Reduces the power passive component count ■ High immunity against fast transients described in IEC 61000-4-4 standards

Applications

■ AC mains static switching in appliance and industrial control systems ■ Drive of medium power AC loads like: – Universal drum motor of washing machine – Compressor for fridge or air conditioner

Description

The ACST12 series belongs to the ACS/ACST family built with the ASD (application specific discrete) technology. This high performance device is adapted to home appliances or industrial systems and drives loads up to 12 A. This ACST12 switch embeds a TRIAC structure and a high voltage clamping device able to absorb the inductive turn-off energy and withstand line transients such as those described in the IEC 61000-4-5 standards. The ACST12-7S needs a low gate current to be activated (I GT < 10 mA) and in the mean time provides a high electrical noise immunity such as those described in the IEC 61000-4-4 standards. The ACST12-7C offers an extremely high static dV/dt immunity of 2 kV/µs minimum. Figure 1. Functional diagram Table 1. Device summary

1 Characteristics

Table 2. Absolute ratings (limiting values)

  1. According to test described in IEC 61000-4-5 standard and Figure 19

Table 3. Electrical characteristics

  1. Minimum I GT is guaranteed at 5% of IGT max
  2. For both polarities of OUT pin referenced to COM pin

2 Application information

2.1 Typical application description

simple gate resistor as shown in Figure 16. Figure 16. Compressor control – typical diagram

Figure 17. Universal drum motor control – typical diagram

2.2 AC line transient voltage ruggedness

shocks through the load. This safety feature works even with high turn-on current rises. times on each AC line voltage polarity.

3 Ordering information scheme

Figure 20. Ordering information scheme Figure 18. Overvoltage ruggedness test circuit Figure 19. Typical current and voltage

4 Package information

  • Epoxy meets UL94, V0
  • Recommende torque: 0.4 to 0.6 N·m In order to meet environmental requirements, ST offers these devices in ECOPACK® packages. These packages have a lead-free second level interconnect. The category of second level interconnect is marked on the package and on the inner box label, in compliance with JEDEC Standard JESD97. The maximum ratings related to soldering conditions are also marked on the inner box label. ECOP ACK is an ST trademark. ECOPACK specifications are available at www.st.com.

Table 6. TO-220AB dimensions

Figure 21. Footprint (dimensions in mm) Table 7. D 2PAK dimensions

5 Ordering information

6 Revision history

Table 8. Ordering information Table 9. Document revision history