TPS2112PW

Current - Output (Max):	750mA
Base Part Number:	TPS2112
Supplier Device Package:	8-TSSOP
Package / Case:	8-TSSOP (0.173", 4.40mm Width)
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 85°C
Applications:	Handheld/Mobile Devices
Voltage - Supply:	2.8 V ~ 5.5 V
Current - Supply:	55µA
Series:	--
Delay Time - OFF:	3ms
Delay Time - ON:	500µs
Internal Switch(s):	Yes
Ratio - Input:Output:	2:1
FET Type:	N-Channel
Type:	Source Selector Switch
Part Status:	Active
Packaging:	Tube

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<h3>TPS2112PW Application Field and Working Principle</h3>The Texas Instruments TPS2112PW is a cost competitive high efficiency synchronous buck controller with integrated ideal diode. It has a wide VIN (4.5V to 20V) and output voltage (0.6V to VIN) range to support a wide variety of applications. It is best suited for portable consumer and industrial applications with medium to low power requirements.<h4>PMIC – OR Controllers</h4>The TPS2112PW is an OR controller that integrates an operational amplifier and logic-level MOSFET drivers. This allows for a fast transient response times for load transients with the added benefit of high efficiency. The OR controller also supports a wide array of voltage regulation designs and thus can enable designers to implement various architectures.<h4>Ideal Diodes</h4>The integrated ideal diode of the TPS2112PW eliminates the need for an external Schottky diode. This significantly reduces the board area, BOM cost and complexity of the design. It also improves system efficiency and accuracy of the regulation. The ideal diode is rated for a maximum continuous current of 4A operating at junction temperatures up to 125°C. <h4>Working Principle</h4>The TPS2112PW provides superior performance by using several different methods. The first method leverages its topology to decrease the charge left in the output capacitors every time the controller enters discontinuous mode (DCM), and thus improve switching frequency and reduce power loss. The second method is that it uses synchronous rectification to achieve higher conversion efficiency. The ideal diode uses a MOSFET to emulate the behaviour of a diode using synchronous rectification. The diode alternates between ON and OFF states depending on the voltage polarities. This is used to redirect the flow of current in the primary side of the converter to minimise the losses while switching between ON and OFF state. The TPS2112PW also provides an Advanced Slope Compensation (ASC) feature which helps to improve the performance of the system. It increases the deadtime between switching cycles and improves the regulator’s transient response time. It also enables the controller to run at higher frequencies which improves the overall efficiency and reduces the switching losses.In conclusion, the TPS2112PW is an ideal solution for applications requiring high efficiency and fast transient response times. Its wide operating range and robust feature set make it suitable for a wide variety of consumer, automotive and industrial applications. The integrated ideal diode helps to reduce the BOM cost and board area considerably and improves system accuracy and efficiency. The Advanced Slope Compensation feature further helps to improve the performance of the system.

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