78HT205TC

Voltage - Output 3:	--
Base Part Number:	78HT205
Size / Dimension:	--
Package / Case:	3-SIP Module
Mounting Type:	Through Hole
Efficiency:	82%
Operating Temperature:	-40°C ~ 85°C
Features:	OTP, SCP
Applications:	ITE (Commercial)
Current - Output (Max):	2A
Series:	78HT200
Voltage - Output 2:	--
Voltage - Output 1:	5V
Voltage - Input (Max):	28V
Voltage - Input (Min):	7V
Number of Outputs:	1
Type:	Non-Isolated PoL Module
Part Status:	Obsolete
Packaging:	Tray

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DC DC Converters

DC-DC converters are one of the most important pieces of technology in a variety of industrial and consumer applications. With advancements in technology, including better understanding of static and dynamic behavior, new types of converters are continually being developed. One of the latest innovations is the 78HT205TC, a commercial current-mode DC-DC converter manufactured by Linear Technology. This article will explain the application field and working principle of this device.DC-DC converters are used when a higher-voltage or lower-voltage output is required than that supplied by the main power source. Such devices can be used for voltage conversion, voltage regulation, power supply management, and high power transfer. Common applications in which a DC-DC converter may be used include complex control systems, communications systems, industrial equipment, battery powered equipment, and computers.The 78HT205TC converter was designed to provide a three-phase output with a wide input range. It operates from a wide input voltage of 8V to 40V and has an output current capability of 5A. In addition, the device offers excellent dynamic response, fast transient response and high power density.The 78HT205TC utilizes current-mode control for controlling the output voltage. Current-mode control is beneficial due to its inherent fast transient response, which is useful for applications which require fast response times. The device also features a wide frequency range of 100KHz to 1.2MHz, adjustable soft-start, over-voltage protection, and adjustable current-limit.The 78HT205TC DC-DC converter operates on the principle of constant-on-time PWM control. When enabled, an internal oscillator generates a fixed frequency square wave signal that is compared to the feedback control signal from the load. The difference between the two signals is used to adjust the duty cycle of the output. When the feedback signal is less than the oscillator signal, the duty cycle increases, while when the feedback signal is greater than the oscillator signal, the duty cycle of the output decreases. This feedback-controlled regulation of the output voltage ensures that the output remains constant under varying conditions.The 78HT205TC is an ideal solution for applications that require high-power, fast response, and a wide operating range. The device is suitable for use in power supplies, power converters, or motor drives. With its high power output, fast transient response, and wide input voltage range, the 78HT205TC is an excellent choice for a variety of applications.

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