Due to lack of product functionality, the basic design of traditional washing machines has not changed substantially over the years. In addition to providing the traditional 5V analog and logic commodity devices used, Texas Instruments (TI) also provides a feature-rich product that integrates relay drivers, zero-voltage detection, brown-out detection functions, and BoM (material List) 5V linear voltage regulator with cost kept within budget.
5V logic and simulation:
Texas Instruments (TI) offers the largest product range in the commodity space, giving designers the flexibility to choose from all the logical functions they need. Whether it is an AND gate or a unit buffer required on a circuit board, TI can provide it. TI also offers a wide selection of standard linear devices for voltage regulation (linear regulator), relay (relay driver), signal conditioning (op amp), etc. These devices are available in the industrial temperature range.
integrated:
Texas Instruments (TI) provides fully integrated solutions, such as digital signal controllers (for digital motor control, PFC, and other system functions) and relay drivers, which provide up to 8 channels, zero-voltage detection, and 5V linear stability Pressure. In addition to providing commonly used 7-bit relay drivers (such as ULN2003A Darlington arrays), TI also provides 8-bit TPL9201 or TPL9202 to drive water valve and drain valve relays and a three-terminal bidirectional switch that can be used to turn on / off the motor Silicon controlled switching element. These devices also have integrated functions that allow zero-voltage crossover detection on the secondary side of the power converter. The information is fed back to the microcontroller so that it knows when to turn on / off the relay to achieve better long-term reliability of the relay itself. The TPL9202 has a power-down detection function, which can issue a notice in advance to prevent the power supply voltage from decreasing. These devices also carry an on-chip 5V linear regulator for powering the 5V logic or microcontroller resident on the circuit board.
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