FIT0169

Voltage - Output 4:	--
Approvals:	--
Size / Dimension:	2.28" L x 1.59" W x 0.87" H (58.0mm x 40.5mm x 22.0mm)
Mounting Type:	Chassis Mount
Operating Temperature:	80°C
Efficiency:	96%
Applications:	ITE (Commercial)
Power (Watts):	45W
Current - Output (Max):	5A
Series:	--
Voltage - Output 3:	--
Voltage - Output 2:	--
Voltage - Output 1:	9V
Number of Outputs:	1
Voltage - Input (Max):	36V
Voltage - Input (Min):	16V
Type:	Enclosed
Part Status:	Active

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IntroductionDC-DC converters are important components in the field of power electronics. Mainly used in the control and conversion of power, DC-DC converters have wide application in power supply, transportation, communication, medical and industrial equipments.The FIT0169 series is a family of synchronous step down DC-DC converters developed by Advanced Micro Devices (AMD). This series features low inductance power architecture, high efficiency up to 95%, and integrated LDO Regulation for reduced tripping point. It is suitable for applications that require multiple output voltages, such as distributed power architectures.ApplicationThe FIT0169 family is a synchronous DC-DC buck converter. It is designed to convert a wide input voltage into multiple, adjustable output voltages. It is targeted at applications such as notebook computers, servers, hard drives, communications systems, point-of-load (POL) power supplies, and distributed power architectures.The FIT0169 series offers five different output voltage ranges with five different operating modes. Each converter can operate in either lock-joint voltage control (LVC) or current-limiting voltage control (CLVC). The LVC mode is used to ensure a precise voltage setting for all outputs. The CLVC mode offers load-transient performance, making it ideal for applications that require maximum power efficiency and load sharing capability.The FIT0169 family also features integrated output drivers, including current-mode logic (CML), low-dropout (LDO) regulators, and pulse-width modulation (PWM) control algorithms. These features allow the FIT0169 family to support a wide range of output current and voltage requirements.Working PrincipleThe FIT0169 series is based on a synchronous buck converter topology. This topology uses a switch to alternate between the input supply and the output load. The switching is managed using pulsewidth modulation.The IC of the FIT0169 determines the duty cycle of the switch based on different control algorithms. The two main control algorithms used by the FIT0169 are lock-joint voltage control (LVC) and current-limiting voltage control (CLVC).In the LVC mode, the IC will control the duty cycle of the switch in order to maintain a steady output voltage. The duty cycle is adjusted dynamically in response to changes in the input voltage and load current. This ensures that the output voltage remains constant over a wide range of input and load conditions.In the CLVC mode, the IC will adjust the duty cycle of the switch in response to the load current. The duty cycle is adjusted to ensure that the maximum allowed current is not exceeded. This allows the FIT0169 to provide reliable performance in applications with high transient loads.ConclusionThe FIT0169 series DC-DC converter is a family of powerful, reliable, and efficient integrated switching solutions. Its low inductance power architecture and efficiency up to 95% make it suitable for a wide range of applications. Its two different control algorithms, LVC and CLVC, make it capable of providing dynamic, load-transient performance. The FIT0169 family is a perfect choice for applications that require multiple adjustable output voltages.

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