Design Files
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GreenChip X Capacitor Discharge IC
The TEA1708 is an automatic discharge IC for X capacitors with a low power consumption (typically 1 mW at 230 V (AC).
A 500 V clamping circuit is integrated, protecting the IC during mains surges. In a typical application with only two 200 kΩ resistors, the maximum differential mode mains surge voltage allowed exceeds 6 kV. A metal oxide varistor is not required to protect the IC.
The X capacitor discharge current is internally limited to 2.3 mA. The discharge delay timer is set externally using a low voltage capacitor.
The very low power consumption in combination with a large discharge current enables the use of a large value X capacitor to reduce EMI while retaining the low standby power.
Product Details
Block Diagram
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Features
Key Features
- 1 mW power consumption at 230 V (AC)
- Integrated 500 V clamp; no metal oxide varistor required to protect the IC
- Self supplied, no external bias required
- Discharge current internally limited
- Adjustable discharge delay
- Very high differential surge: 6 kV with two 200 kΩ resistors
- Easier application design, resolving EMI issues while retaining the efficiency level
NXP GreenChip
- This product is part of the NXP GreenChip portfolio, this program optimizes for energy efficiency in mobile and computing applications, specializing in high-power density, safety and reliability.
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