LM3152-3.3DEMO

Series:	SIMPLE SWITCHER®
Part Status:	Active
Main Purpose:	DC/DC, Step Down
Outputs and Type:	1, Non-Isolated
Voltage - Output:	3.3V
Current - Output:	10A
Voltage - Input:	6 V ~ 24 V
Regulator Topology:	Buck
Frequency - Switching:	500kHz
Board Type:	Fully Populated
Supplied Contents:	Board(s)
Utilized IC / Part:	LM3152

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LM3152-3.3DEMO Application Field and Working PrincipleThe LM3152-3.3 Demo Board from Texas Instruments is an evaluation board for the LM3152-3.3, a 5A maximum load, digitally programmable, current-mode, isolated switching regulator. The board provides a practical platform for users to quickly evaluate the LM3152 using a small, low cost, optimized design and minimize external constraints on the device rating.ApplicationsThe LM3152-3.3 Demo Board works well in certain industrial, automotive, and consumer applications. This includes, but is not limited to, amplifiers, computer peripherals, domestic appliances, LED lighting, medical instruments, and process control. The LM3152-3.3 can be made suitable for a variety of other applications by making some slight modifications.FeaturesThe LM3152-3.3 Demo Board features a programmable control loop parameters including switching frequency, spread spectrum mode, minimum on time, programmable current limit, boundary conductor mode, and temperature voltage slope compensation. It also features a power supply with a dual voltage output for single rail applications, adjustable input voltage, low output ripple, and a low-side synchronous rectifier for improved thermal performance. In addition, the board also offers protection features such as overvoltage, undervoltage, and overcurrent protection.Working PrincipleThe LM3152-3.3 Demo Board works by taking power from a power supply and using a control loop to regulate the output voltage. This is achieved by measuring the output voltage and sending it back to a controller that adjusts the voltage as needed. In order to limit the output current, a current outside the loop is measured and a limit value is adjusted to match the maximum output current.The LM3152-3.3 Demo Board also employs the synchronous rectifier to improve the thermal performance of the device. The synchronous rectifier works by sensing the voltage across the lower MOSFET and controlling the rectifier and load current in order to minimize losses.ConclusionThe LM3152-3.3 Demo Board from Texas Instruments is a robust and reliable evaluation board for the LM3152-3.3, a 5A maximum load, digitally programmable, current-mode, isolated switching regulator. This board provides a quick and easy way to evaluate the performance of the LM3152-3.3 in a wide range of industrial, automotive, and consumer applications. The board also features adjustable input voltage, low output ripple, and protection features for maximum safety. The working principle of the board is based on the use of a control loop to regulate the output voltage and a synchronous rectifier to improve the thermal performance of the device.

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