PT6407P

Voltage - Output 3:	--
Base Part Number:	PT6407
Size / Dimension:	--
Package / Case:	12-SIP Module
Mounting Type:	Through Hole
Efficiency:	77%
Operating Temperature:	0°C ~ 85°C
Features:	--
Applications:	ITE (Commercial)
Current - Output (Max):	3A
Series:	PT6400
Voltage - Output 2:	--
Voltage - Output 1:	2.1V
Voltage - Input (Max):	5.5V
Voltage - Input (Min):	4.5V
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Part Status:	Obsolete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 power electronic devices that convert one direct current (DC) voltage to another. They enable the voltage of a power supply to be regulated, raised or lowered using electronic switching components. DC-DC converters are commonly used in applications involving power conversion, battery charging, voltage regulation and power optimization. This article will focus on the application field and working principle of the PT6407P converter.

Application Field

The PT6407P is a Shunt Mode current mode programmable DC/DC controller designed for isolated LED lighting application. It integrates an accurate programmable current source and a light load current boost function, providing a solution that simplifies compliance with the Energy Star and DOE Maximum Merit Criteria (MMC) standards for LED lighting applications. It also supports analog dimming and flicker free mode, guaranteeing stable light output with excellent quaility.The PT6407P is suitable for powering single stage isolated LED drivers. It integrated a 95.8V precision reference voltage, ideal for use as a feedback voltage for constant current control. Its maximum working voltage of 550V supports medium power range applications.

Working Principle

The working principle of the PT6407P is based on the Shunt Mode current mode system. In this system, the output current is regulated by controlling the peak current flowing through the power switch of the system. The peak current is sensed using a shunt resistor and the voltage across it is compared with the reference voltage by the internal error amplifier.The PT6407P provides two modes of current regulation: Peak Current Mode and Average Current Mode. In Peak Current Mode, the peak current of the output current waveform is precisely set. In Average Current Mode, the average current is regulated instead of the peak current. This system ensures low power dissipation and improves the overall efficiency of the power system. The PT6407P is also equipped with an accurate programmable current source and a light load current boost function. The current source provides a precise reference current signal to the error amplifier, which is used to adjust the peak current. The light load current boost function allows the system to remain in constant current mode even at light loads, avoiding current dipping problems.The PT6407P provides a rich set of control and protection features. It is equipped with an over voltage protection (OVP) to protect the power system from over voltage damage. It also includes an over temperature protection (OTP) for thermal protection of the system. In addition, it has a power good signal (PGS) to indicate normal operation, and a soft-start feature to avoid inrush currents. In conclusion, the PT6407P is a high performance Shunt Mode current mode programmable DC/DC converter ideal for isolated LED lighting application. Its accurate programmable current source and light load current boost feature provide excellent performance and improved system efficiency. The device\'s rich set of control and protection functions ensures reliable operation.

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