PTMA403033N2AZT

Series:	PTMA40xx
Packaging:	Tape & Reel (TR)
Part Status:	Active
Type:	Isolated Module
Number of Outputs:	1
Voltage - Input (Min):	36V
Voltage - Input (Max):	75V
Voltage - Output 1:	3.3V
Voltage - Output 2:	--
Voltage - Output 3:	--
Current - Output (Max):	3A
Power (Watts):	10W
Voltage - Isolation:	1.5kV
Applications:	ITE (Commercial)
Features:	Remote On/Off, OCP, OVP, UVLO
Operating Temperature:	-40°C ~ 85°C
Efficiency:	82%
Mounting Type:	Surface Mount
Package / Case:	6-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:	PTMA403033

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DC DC ConvertersDC to DC converters can be used to step up or step down the voltage to a different voltage level while still providing the same amount of current. PTMA403033N2AZT is a DC-DC converter from Murata, specifically designed for automotive applications. It is a single-channel switch-mode DC/DC converter that contains a synchronous rectifier circuit and various fault protections.ApplicationsPTMA403033N2AZT has a wide range of applications and is suitable for use in automotive, consumer, and industrial systems. It can be used to step down a higher voltage input to a specific lower voltage output, while still providing the same amount of current, while still offering high efficiency, fast transient response, and good EMC performance. The output voltage is adjustable from 0.6V to 12V with a few volts of range. It is also suitable for use in wide input voltage range applications, such as in automotive power supplies, where it can convert a 40V input to a 12V output.Working PrinciplePTMA403033N2AZT is a Topology BB type of DC-DC converter. In Topology BB, the main device acts as a switch and the synchronous diode acts as a rectifier. In this type of converter, the switching frequency of the device can be adjusted to obtain optimal efficiency. The output voltage is regulated by adjusting the width of the pulse with a pulse width modulation (PWM) signal, generated by the Pulse Width Modulator (PWM) IC.The main device operates in the two possible states: OFF-state and ON-state. When the device is in the OFF-state, the current will flow through free wheeling diode to the load current and the inductor stores the energy. When the device is in the ON-state, the inductor current flows to the output and is regulated by the PWM signal. The output voltage of the converter is generated by the difference between the current inductor and the load current. The output voltage is kept at the desired level by adjusting the width of the pulses as per the feedback voltage.ConclusionPTMA403033N2AZT is an automotive DC-DC converter suitable for a wide range of automotive, consumer, and industrial applications. It is a Topology BB type converter which works by switching between an OFF-state and ON-state to regulate the output voltage with a PWM signal. The output voltage is adjustable from 0.6V to 12V with a few volts of range. This makes it a great option for applications which require wide input voltage range.

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