PT4528A

Current - Output (Max):	5A
Base Part Number:	PT4528
Size / Dimension:	2.58" L x 1.19" W x 0.34" H (65.5mm x 30.2mm x 8.6mm)
Package / Case:	12-SIP Module
Mounting Type:	Through Hole, Right Angle
Efficiency:	67%
Operating Temperature:	-40°C ~ 85°C
Features:	--
Applications:	ITE (Commercial)
Voltage - Isolation:	1.5kV
Power (Watts):	20W
Series:	Excalibur™ PT4520
Voltage - Output 3:	--
Voltage - Output 2:	--
Voltage - Output 1:	2.5V
Voltage - Input (Max):	75V
Voltage - Input (Min):	36V
Number of Outputs:	1
Type:	Isolated Module
Part Status:	Obsolete
Packaging:	Tray

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DC DC Converters

DC-to-DC converters are paramount in our increasingly complex, interconnected world. Owing in large part to ever-growing demand for high-density packaging, the DC-to-DC converter-at once bulky and complex-now approaches a sleek numerical construction of efficiency and performance. The PT4528A, from Princeton Technology Corporation, is one of the leading solutions to the challenge of providing the low-cost, high-accuracy and rapid response necessary to meet our power needs.The PT4528A is a high efficiency, high current, low-side analog-control DC/DC converter. It is designed to provide high-accuracy current and voltage regulation, helping to minimize power loss during the conversion process. The PT4528A utilizes a combination of adjustable power factor correction analog control, synchronous rectification, and low-voltage start to achieve 0.099% accuracy. The PT4528A is primarily used in a wide-range of applications, particularly in emerging sensor networks and mobile computing. It is capable of operating over a wide 2-25V input range and requires only 0.8V headroom to start up. This makes it ideal for applications such as DSPs, FPGAs, microprocessors, and ASICs. Moreover, the device is designed with a selectable ROUND and SYMMETRIC mode, enabling users to adjust the duty cycle to maximize efficiency at a specific load.The PT4528A achieves its high efficiency by utilizing a combination of analog and digital controls. Its analog control schemes include the use of pulse-width modulation (PWM), which enables the device to rapidly and accurately regulate the output voltage and current. This is accomplished by controlling the on/off state of the MOSFETs, which are responsible for the conversion of the input voltage into the output voltage. Additionally, the PT4528A implements synchronized rectification, which helps to prevent both EMI interference and excessive heat build up. Finally, the device also incorporates a low-voltage start scheme, which enables the device to start up from a low voltage input (0.8V). This makes it particularly well-suited for battery-powered applications where the voltage can vary significantly over time. In addition to its high-efficiency and low-voltage start capabilities, the PT4528A also offers users a variety of benefits. For instance, the device is designed with frequency synchronization capabilities, which allow users to synchronize the PWM switching frequency with an external clock source. This is extremely useful in applications where frequency hopping or spread spectrum technology is being used. Additionally, the device is designed to dissipate less than 7mW of static power, making it an excellent choice for power-sensitive applications. Finally, the device features an integrated short-circuit protection circuit which helps to mitigate any damage caused by an accidental short circuit or other fault. In conclusion, the PT4528A is a leading solution for DC-to-DC conversion. Its combination of high efficiency, low voltage start, integrated protection circuitry, and frequency synchronization capabilities make it a highly versatile and reliable solution for various power needs.

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