ZL9101MIRZ-T

Current - Output (Max):	12A
Base Part Number:	ZL9101
Supplier Device Package:	21-QFN (15x15)
Size / Dimension:	0.59" L x 0.59" W x 0.14" H (15.0mm x 15.0mm x 3.5mm)
Package / Case:	21-PowerBQFN Module
Mounting Type:	Surface Mount
Efficiency:	95%
Operating Temperature:	-40°C ~ 85°C
Features:	OCP, OTP, OVP, UVLO
Applications:	ITE (Commercial)
Series:	ZL9101M
Voltage - Output 3:	--
Voltage - Output 2:	--
Voltage - Output 1:	0.54 ~ 3.6 V
Voltage - Input (Max):	13.2V
Voltage - Input (Min):	4.5V
Number of Outputs:	1
Type:	Non-Isolated PoL Module, Digital
Part Status:	Active
Packaging:	Tape & Reel (TR)

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DC DC Converters: ZL9101MIRZ-T Application Field and Working Principle

The ZL9101MIRZ-T is a DC-DC converter which is part of a family of power products from Texas Instruments. It can be used to convert and step-down a 9V input to 4V or 6V output. This kind of converter is commonly used in LED lighting applications. It can also be used in mobile devices, devices that require powering from batteries such as digital cameras, remote control toys, and handheld games. The ZL9101MIRZ-T is a step-down switch-mode regulator that uses a switching topology to generate a regulated output voltage. Its key features include a wide input voltage range of 5V to 45V, up to 90% efficiency, output voltage accuracy of ±2%, no-load power consumption of < 4mW, external current-limit protection, and low quiescent current.The ZL9101MIRZ-T works most efficiently in a buck (step-down) converter mode. It has two main sections, the power stage and the driver circuit. The power stage contains an N-channel power MOSFET which acts as a switching element and a current-sense resistor. The driver circuit uses an external signal to control the MOSFET on and off.The core of the ZL9101MIRZ-T switch-mode converter is a flyback topology. The N-channel MOSFET is the main switch in this topology, which drives the output voltage to the required level. When the MOSFET turns on, the input voltage is rectified and stored as energy in an inductor. When the MOSFET turns off, the stored energy in the inductor is released to the output. In this way, the DC-DC converter is able to step down the input voltage to the desired output voltage.The external current-limit protection of the ZL9101MIRZ-T is particularly useful. This protection feature effectively limits the maximum amount of current that can flow through the output side of the power stage. If this current exceeds the predetermined limit, the power MOSFET will shut off and the current is unable to reach the output side. This helps to improve the efficiency of the converter and prevents it from drawing large amounts of power from the input side. In addition, the current-sense resistor helps to stabilize the circuit and can be used to accurately monitor the current flow through the output side. This helps to improve the efficiency of the converter as well as prevents the output voltage from going beyond the safe limits.Overall, the ZL9101MIRZ-T DC-DC converter is an effective and efficient solution for large scale LED lighting applications. It is capable of taking a wide range of input voltages and converting them to the desired output voltage accurately and efficiently. Its features such as external current-limit protection and current-sense resistor stabilization improve the safety and reliability of the process.

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