PT4471C

Power (Watts):	100W
Base Part Number:	PT4471
Control Features:	Enable, Active Low
Size / Dimension:	3.61" L x 1.62" W x 0.50" H (91.7mm x 41.1mm x 12.7mm)
Package / Case:	26-SMD Module
Mounting Type:	Surface Mount
Efficiency:	89%
Operating Temperature:	-40°C ~ 85°C
Features:	Remote On/Off, OCP, OTP, OVP, UVLO
Applications:	ITE (Commercial)
Voltage - Isolation:	1.5kV
Series:	Excalibur™ PT4471
Current - Output (Max):	30A
Voltage - Output 3:	--
Voltage - Output 2:	--
Voltage - Output 1:	1.3 ~ 3.5 V
Voltage - Input (Max):	36V
Voltage - Input (Min):	18V
Number of Outputs:	1
Type:	Isolated Module
Part Status:	Obsolete
Packaging:	Tray

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The PT4471C is a type of DC DC converter that is widely used in a variety of industrial applications. It is a low power device, capable of providing up to 5A output current, and is optimized for high efficiency operation. The PT4471C is designed to regulate output without the need for external filtering, and it is available in a variety of configurations including non-isolated module, buck, boost, SEPIC, and isolated flyback topologies.The PT4471C is designed to operate at frequencies up to 2kHz, making it well-suited for higher speed applications. The device utilizes a constant-on-time (COT) control scheme to regulate output, and features current mode PWM control for optimised transient response and fast loop settling time. The device also makes use of an adaptive dead-time control technique which minimizes load transient overshoot, further enhancing system reliability and stability.The PT4471C is designed to accurately control output voltage and provide excellent regulation even under conditions of widely varying input voltage, load current, and duty cycle. The device also features selectable burst mode operation at light load conditions, reducing power consumption and improving overall system efficiency. The device can operate at supply voltages ranging from 4.5V to 60V, and is available in industry-standard packages, making it easy to design-in to existing systems.The PT4471C achieves high efficiency operation through a number of measures. Its very low quiescent current, fast loop response, and low peak current capabilities all contribute to maximum system efficiency, especially at light loads. Low output ripple, fast transient response, and ultra-low EMI also result from the device’s constant on-time control mechanism.The PT4471C features a host of protection mechanisms, including short circuit protection (SCP), undervoltage lockout (UVLO), current-limit protection (CLP) and thermal shutdown (TSD). The device also features an external frequency synchronization terminal, allowing for synchronization with external clock signals for improved system reliability.In summary, the PT4471C is a low power DC DC converter optimized for high efficiency operation. Its constant-on-time control scheme, adaptive dead-time control, and selectable burst mode operation all combine to provide excellent output voltage regulation, fast transient response, low output ripple, and ultra-low EMI. The device also features a range of protection mechanisms and is available in a variety of configurations, making it a suitable choice for a wide range of industrial applications.

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