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UC2625DW Application Field and Working Principle

The UC2625DW is a member of the Texas Instrument\'s PMIC- Motor Drivers, Controllers. It is a high-speed, high frequency DMOS Full Bridge Driver that can switch up to a maximum of 1.2 A. It can drive low-side as well as high-side power MOSFET and IGBTs. The UC2625DW has a built-in protection circuit which enables the device to operate in a temperature range of up to 125°C maximum. It is designed to handle dc motors and operates at frequencies up to 10 kHz.

Application Fields

The UC2625DW is suitable for applications where high-frequency operation and excellent power efficiency are required. It is widely used in electric vehicles, consumer appliances, industrial and automotive applications. It can drive any motor which needs controlled speed and power in any direction.

The UC2625DW is well-suited for controlling cooling fans in electric and hybrid vehicles. It can be used for efficient power supply of high-torque and low-speed motors in consumer products like electric fans, electric vacuum cleaners, etc. It is also suitable for controlling industrial equipment like electric pumps, compressors, and automotive electric components.

UC2625DW Working Principle

The UC2625DW contains two independent, high-speed, high-frequency full-bridge, low-side drivers and two equally separated high-side drivers. It is non-inverting, H-bridge driver with a power source connected to the VCC pin. The drivers consist of two external power MOSFETs configured as shown in Figure 1. The MOSFETs are connected on the same power plane, so when one MOSFET is in the conducting state, the other one will be in the off-state.

The UC2625DW features a low-power sleep mode. This enables the user to save power while idle without the need to completely power down the device. In sleep mode, the output drivers are shut off and the device keeps only the clock and the drive logic active. This helps reduce power consumption and consequently, extends battery life.

The device also has a built-in protection circuit which helps protect the device from short circuit, under-voltage and over-voltage conditions. The built-in protection circuit enables the device to operate in a temperature range of up to 125°C maximum.

Conclusion

The UC2625DW is an ideal choice for applications requiring reliable and efficient power control and switching. It is designed to handle dc motors and operates at frequencies up to 10 kHz. It is suitable for applications such as electric vehicles, consumer appliances, industrial, and automotive applications. It also has a low-power sleep mode which helps reduce power consumption when the device is idle.

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