TPS61050YZGR

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The TPS61050YZGR is an LED driver which belongs to the PMIC (Power Management Integrated Circuit) category and is capable of driving up to 8 LEDs in series. It features a constant current up to 5 A and has an adjustable voltage ranging from 12 V to 48 V, making it suitable for a variety of applications and use cases. Furthermore, it has a programmable frequency range from 500 kHz to 2.4 MHz, making it quite versatile and allowing for optimization of various LED light source parameters.

The primary application of the TPS61050YZGR is in LED lighting and signage systems, as it provides a maximum LED current of 5 A, allowing for up to 8 LED strings of various lengths and configurations. If a larger number of LED strings is desired, the device can be configured in a parallel topology, allowing for a greater number of strings to be powered per current setting. Additionally, with its adjustable voltage range, the device can be used to drive a variety of LED light sources, such as COB, SMD, and more.

The TPS61050YZGR features a valley fillwork mode which allows for higher efficiency and lower EMI when driving LEDs with PWM dimming. It also features a standard frequency synchronization pin which allows for synchronizing the device’s switching frequency with an external clock, allowing for simplified system design and fewer external components. Additionally, its integrated soft start helps to minimize inrush current and reduce the stress on the power source.

The working principle of the TPS61050YZGR is based on a full bridge topology, with the bridge consisting of two N-channel MOSFETs and two P-channel MOSFETs. The bridge begins to operate when enough current is supplied to the gate of the P-channel MOSFET. The falling MOSFET gate voltage causes a current to flow through the inductor and diode, allowing a voltage to build up on the capacitor. Once the voltage reaches the source of the N-channel MOSFET, it is switched off, and the current flows in reverse through the diode and inductor. This process is repeated until the current reaches the desired constant current value.

In conclusion, the TPS61050YZGR is an LED driver which belongs to the PMIC category and is suitable for LED lighting and signage systems. It features an adjustable voltage range, a valley fillwork mode, a programmable frequency range, an integrated soft start, and more. Furthermore, its working principle is based on a full bridge topology which allows for constant current up to 5 A. This makes it a valuable tool for both experienced and inexperienced engineers alike.

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