TNY378PN

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Power management systems are an important feature of many electronic devices, ranging from mobile phones, tablet computers, and laptops to home appliances, medical equipment, and automotive systems. Often the most critical part of these systems is the power management integrated circuit (PMIC). The power management IC (PMIC) provides the DC to DC converter, and in some cases the AC to DC converter, for system power conversion, as well as voltage and current regulation for the system. PMICs can be divided into several categories, including AC / DC converters, offline switchers, and so on.

The TNY378PN is a highly integrated, cost effective and efficient AC-DC converter. It is suitable for applications requiring wide input voltage range, low power consumption and reliable operation in confined environments. It is compatible with various AC input voltages such as 220VAC, 110VAC, and 85VAC, and provides precise DC output voltage.

The TNY378PN features an integrated primary PWM regulator and an optimized secondary PWM with a minimum switch peak current of 6.5A. It integrates a wide range of protection functions to ensure circuit reliability, such as short-circuit protection for both AC and DC sides, over-voltage protection, over-temperature protection, and overload protection. The TNY378PN also includes built-in fault protection and delay recovery, eliminating the need for external components, and enabling designs with small form factors and reduced costs.

The TNY378PN is composed of a gate driver, MOSFETs, isolation layer, primary and secondary controllers, high-voltage rectifier, high-voltage capacitor, compensation capacitors and other components to provide a complete, robust, and reliable AC-DC conversion solution. It has a wide input voltage range of 85VAC to 265VAC and an efficiency up to 94.5%. The TNY378PN also features a no-load power consumption of less than 0.2W and provides an output voltage accuracy of ±2%. It operates over a temperature range of -40°C to 85°C, making it suitable for a variety of environmental conditions.

The TNY378PN works by first rectifying the AC input voltage and providing the dc bus voltage to the primary controller. The primary controller is a high frequency, fixed frequency PWM controller with a maximum switching frequency of 250kHz. The primary controller then regulates the output voltage by switching the MOSFETs in order to produce the desired output voltage. The secondary controller is a fixed frequency PWM controller with a maximum switching frequency of 400kHz. It provides additional current regulation and over-current protection. The output voltage is then regulated by the secondary controller, by modulating the switching of the MOSFETs, in order to provide the desired output voltage.

In summary, the TNY378PN is an integrated AC-DC converter with a wide input voltage range, high power conversion efficiency, low no-load power consumption, and multiple protection functions. It provides the reliable, cost-effective and efficient AC-DC conversion needed for many power management systems. The TNY378PN is a great choice for applications requiring high performance in small form factors and environments with a wide range of operating temperatures.

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