PTMA401120N1AS

Voltage - Isolation:	1.5kV
Applications:	ITE (Commercial)
Features:	OCP, OVP, UVLO
Operating Temperature:	-40°C ~ 85°C
Efficiency:	87%
Mounting Type:	Surface Mount
Package / Case:	5-SMD Module
Size / Dimension:	1.10" L x 0.96" W x 0.36" H (27.9mm x 24.4mm x 9.1mm)
Base Part Number:	PTMA401120
Series:	PTMA40xx
Packaging:	Tray
Part Status:	Obsolete
Type:	Isolated Module
Number of Outputs:	1
Voltage - Input (Min):	36V
Voltage - Input (Max):	75V
Voltage - Output 1:	12V
Voltage - Output 2:	--
Voltage - Output 3:	--
Current - Output (Max):	1A
Power (Watts):	10W

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DC DC Converters: PTMA401120N1AS Application Field and Working PrincipleDC to DC conversion, also known as DC DC conversion, is used in many industries to convert power and energy from one type of DC source to another. Most commonly, it is used to convert electrical energy from one voltage level to another, such as converting a 12V battery to a 50V output. The PTMA401120N1AS is a specialty DC to DC converter designed to provide high efficiency. This article will discuss the application field of PTMA401120N1AS as well as its working principle.Application FieldThe PTMA401120N1AS DC to DC converter can be used in a variety of applications where efficient power conversion is required. Its wide input voltage range and high efficiency makes it suitable for applications requiring a wide input voltage range, such as for vehicle or aircraft electrical power supplies, telecommunications systems, and laptop computers. The PTMA401120N1AS is also suitable for use in uninterruptible power supplies, photovoltaic energy conversion systems, and renewable energy storage systems, as well as in lightweight, compact portable electronic systems.Working PrincipleThe PTMA401120N1AS DC to DC converter is a buck-boost converter with small form factor. Its switching frequency is specifically optimized for use in harsh environments. Its high efficiency is achieved through precise output voltage control and current mode control, with low noise operation at all switching frequencies.The PTMA401120N1AS also features an integrated high-efficiency synchronous rectification and output power rating up to 12A. In addition, it has a wide range of operating conditions, including input voltages from 3V to 40V, and output voltages from -1V to 38V.The PTMA401120N1AS DC to DC converter works by first rectifying the input voltage. Then, a high-frequency pulse width modulation (PWM) signal is applied to the base of an N-channel MOSFET. The PWM signal is generated by an internal oscillator, which is then filtered with a low-pass filter to smooth out the output voltage.When the input voltage is greater than the output voltage, the PWM signal switches the MOSFET to an ON state and the input voltage is stepped down to the output voltage. When the input voltage is lower than the output voltage, the PWM switches the MOSFET to an OFF state and the input voltage is stepped up to the output voltage.The efficiency of the DC to DC converter is directly dependent on the input voltage and the direction of current flow. When the input voltage is much higher than the output voltage, the efficiency is higher because of the higher step-down conversion ratio. However, when the input voltage is lower than the output voltage, the efficiency is lower due to the step-up conversion ratio.ConclusionThe PTMA401120N1AS DC to DC converter is a high-efficiency solution for converting a wide range of input voltages to a wide range of output voltages. Its small size, high efficiency, wide operating range, and high output power rating make it suitable for many applications including uninterruptible power supplies, renewable energy storage systems, and portable electronics. The working principle of the converter is based on the high-frequency pulse width modulation and rectification of the input voltage. Its efficiency is dependent on the input voltage as well as the direction of current flow.

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