LTM4643MPY

Current - Output (Max):	3A, 3A, 3A, 3A
Base Part Number:	LTM4643
Supplier Device Package:	77-BGA (15x9)
Size / Dimension:	0.59" L x 0.35" W x 0.10" H (15.0mm x 9.0mm x 2.4mm)
Package / Case:	77-BBGA Module
Mounting Type:	Surface Mount
Efficiency:	--
Operating Temperature:	-55°C ~ 125°C
Features:	OCP, OTP, OVP
Applications:	ITE (Commercial)
Series:	µModule®
Voltage - Output 3:	0.6 ~ 3.3 V
Voltage - Output 2:	0.6 ~ 3.3 V
Voltage - Output 1:	0.6 ~ 3.3 V
Voltage - Input (Max):	20V
Voltage - Input (Min):	4V
Number of Outputs:	4
Type:	Non-Isolated PoL Module
Part Status:	Active
Packaging:	Tray

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DC DC Converters

DC to DC converters have been essential for providing power solutions in applications that require them, such as vehicle power management, industrial and commercial applications, telecommunication and other custom applications. These devices are essential for converting direct current (DC) input power sources into the output voltage levels required by electronic systems. One such device is the LTM4643MPY DC to DC converter which features an integrated charge pump, full bridge rectifiers, and charge balancing circuitry.

LTM4643MPY application field and working principles

The LTM4643MPY is a DC to DC converter with an integrated dual-path (dual-channel) converter that provides output drive capability with bi-directional conversion capability for 12V, 24V, and 48V systems. With the LTM4643MPY, you can achieve high efficiency (up to 95%) and low noise operation (EMI Signature Compliance) while developing hybrid power sources for automotive, telecommunication, ARM microcontrollers, and other applications that need higher output voltage levels. The application fields of the LTM4643MPY include, but are not limited to, energy management systems, professional audio/video systems, communications systems, healthcare systems, automotive applications, and industrial applications. The working principles of the LTM4643MPY are based on two main phases. In the first phase, the input voltage is converted from its source current (DC) level to a voltage at which the built-in incorporation can be used. The incorporated functions are the full bridge rectifiers, blocking diode and voltage regulated supply (VRS). These components are used to reduce load peaks, and also to maintain the input voltage level for optimal efficiency. The second phase consists of the charge pump, which is responsible for providing the output voltage level for the system. The charge pump uses two capacitors - one for the input voltage source and the other for the output voltage, and converts or down-converts the input voltage according to the polarity of the voltage applied. This process is essential for Bi-directional operation and provides high performance.The LTM4643MPY DC to DC converter also offers additional features, such as an integrated 3-phase rectifier, 2-level buck converter, dynamic bypass capability, switchable input ranges, and high-current drive capability. The dynamic bypass feature allows the converter to sense the load current and automatically switch to bypass mode when the load current is below the designed threshold. The switchable input range feature allows the user to adjust the input voltage to meet the needs of the application.

Conclusion

The LTM4643MPY DC to DC converter is a highly efficient device that offers a wide range of features and benefits for applications that require higher output voltage levels, such as energy management systems, professional audio/video systems, communications systems, healthcare systems, automotive applications, and industrial applications. Its power architecture combines two distinct phases, the full bridge rectifier and charge pump, that enables low noise operation, superior efficiency, and dynamic bypassing capability. Its high-current drive capability and adjustable input range make it an ideal solution for those applications.

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