DCM4623TD2K06B5M00

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DC-DC converters provide an efficient way to transform direct current (DC) from one voltage level to another. The DCM4623TD2K06B5M00 is a high performance buck DC/DC converter LED driver module with a buck converter topology configured as a constant voltage output. It operates from an input voltage range of 6V to 7.5V and provides an adjustable constant voltage output of 3.2V to 6.8V at up to 6A of output current. The part features cycle-by-cycle current limiting, soft-start, and thermal shutdown, all of which enhance system safety and reliability.

DCM4623TD2K06B5M00 Application Field

The DCM4623TD2K06B5M00 is ideal for applications such as LED lighting, automotive lighting, industrial lighting, and general power conversion systems. Its 6A switching current capabilities makes it suitable for driving multiple high-power LEDs for brightness levels up to 1000 lumens. The high efficiency of the module allows for maximum power conversion while keeping heat dissipation and the power system footprint to a minimum.

The module also offers a wide range of adjustable features. It is rated for 6A constant current output and offers two user-definable external compensation network points for improved power system transient response, allowing it to be used in many applications where high performance and stability are essential. The module comes pre-configured with the default output voltage of 5V. However, the user can adjust the output voltage via the two external step senses resistors, allowing it to be used for a variety of applications with different output voltage requirements. The design also allows the user to control LED dimming via an analog voltage or PWM signal.

DCM4623TD2K06B5M00 Working Principle

The DCM4623TD2K06B5M00 operates on the principle of voltage buck conversion. When an input voltage is applied to the module, it steps down the voltage to the desired output voltage value while maintaining the same output current. The voltage buck converter operates in a switching mode, using a pair of MOSFET switches in a push-pull configuration to transfer power from the input to the output. This type of converters has the advantage of providing high efficiency as well as high power output with a small footprint.

The module also features a pulse-width modulation (PWM) dimming function, allowing users to adjust the output LED\'s brightness via an external PWM signal. This is achieved through the use of an internal comparator which compares the PWM signal\'s pulses with an internal reference voltage. The comparison is used to switch the MOSFETs on and off, thereby controlling the output current and thus the output LED brightness.

The DCM4623TD2K06B5M00 also includes built-in safety and protection features. The part includes cycle-by-cycle current limiting and thermal shutdown to protect the device from any short circuit or overtemperature conditions. Additionally, the part includes a soft-start function to reduce start-up shock and inrush current. By providing these features, the module ensures the highest level of system safety and reliability.

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