Overview
The ACS120-7SB-TR, produced by STMicroelectronics, is a high-performance AC line switch belonging to the AC line switch family. This device is designed to control loads up to 2 A and is particularly suited for AC static switching in appliance control systems. It features a high-voltage clamping structure to absorb inductive turn-off energy and a gate level shifter driver to separate the digital controller from the main switch. The ACS120 is triggered by a negative gate current flowing out of the gate pin and can be driven directly by a digital microcontroller through a resistor.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Repetitive peak off-state voltage (VDRM/VRRM) | ±700 | V |
| On-state RMS current (IT(RMS)) | 2 | A |
| Avalanche controlled voltage (VCL) | 1100 | V |
| Gate triggering current (IGT) | < 10 | mA |
| Non-repetitive surge peak on-state current (ITSM) | 20 (tP = 20 ms), 21 (tP = 16.7 ms) | A |
| Storage temperature range (Tstg) | -40 to +150 | °C |
| Operating junction temperature range (TJ) | -30 to +125 | °C |
| Maximum lead soldering temperature (TL) | 260 | °C (10 s) |
Key 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
- No need for external protection snubber or varistor
- Enables equipment to meet IEC 61000-4-5 standards
- Reduces component count up to 80%
- Interfaces directly with the microcontroller
- Eliminates gate kick back on the microcontroller
- Allows straightforward connection of several AC switches on the same cooling pad
Applications
- AC static switching in appliance control systems
- Drive of low power high inductive or resistive loads such as:
- Relay, valve, solenoid, dispenser
- Pump, fan, micro-motor
- Defrost heater
- Washing machine, dishwasher, tumble dryer, refrigerator, air-conditioning systems, and cookware
Q & A
- What is the maximum repetitive peak off-state voltage of the ACS120?
The maximum repetitive peak off-state voltage (VDRM/VRRM) is ±700 V.
- What is the nominal conducting current of the ACS120?
The nominal conducting current (IT(RMS)) is 2 A.
- What is the typical avalanche controlled voltage of the ACS120?
The typical avalanche controlled voltage (VCL) is 1100 V.
- What is the gate triggering current of the ACS120?
The gate triggering current (IGT) is less than 10 mA.
- Does the ACS120 require external protection snubbers or varistors?
No, the ACS120 does not require external protection snubbers or varistors due to its high noise immunity and overvoltage protection features.
- How does the ACS120 reduce component count?
The ACS120 reduces component count up to 80% by integrating necessary protection and control features within the device.
- Can the ACS120 be driven directly by a microcontroller?
Yes, the ACS120 can be driven directly by a microcontroller through a resistor.
- What standards does the ACS120 help equipment meet?
The ACS120 helps equipment meet IEC 61000-4-5 standards.
- What types of loads can the ACS120 drive?
The ACS120 can drive low power high inductive or resistive loads such as relays, valves, solenoids, dispensers, pumps, fans, micro-motors, and defrost heaters.
- What is the operating junction temperature range of the ACS120?
The operating junction temperature range (TJ) is -30 to +125°C.
