QM48T45033-NBB0

Current - Output (Max):	45A
Control Features:	Enable, Active Low
Size / Dimension:	2.28" L x 1.45" W x 0.36" H (57.9mm x 36.8mm x 9.1mm)
Package / Case:	8-DIP Module, 1/4 Brick
Mounting Type:	Through Hole
Efficiency:	80.5%
Operating Temperature:	-40°C ~ 85°C
Features:	Remote On/Off, OCP, OTP, OVP, UVLO
Applications:	ITE (Commercial)
Voltage - Isolation:	2kV
Power (Watts):	149W
Series:	QM
Voltage - Output 3:	--
Voltage - Output 2:	--
Voltage - Output 1:	3.3V
Voltage - Input (Max):	75V
Voltage - Input (Min):	36V
Number of Outputs:	1
Type:	Isolated Module
Part Status:	Active
Packaging:	Bulk

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Introduction

QM48T45033-NBB0 is a type of DC-DC converter, used to convert voltage from a higher level to a lower level, or vice-versa. It is an advanced point-of-load DC-DC converter that provides efficient power solutions in a compact package and supports a wide input voltage range.

Application field

QM48T45033-NBB0 is primarily used in power modules that can be used for many different application fields such as industrial, automotive, telecommunication, and consumer electronics. Specifically, this device is used in a wide range of applications such as powering and/or driving processor cores, ASICs, FPGAs, memory, DSPs, and other point-of-loads.

Working principle

QM48T45033-NBB0 DC-DC converters are based on a synchronous buck architecture, comprising of a high-side MOSFET and a low-side MOSFET that are both controlled by a single control chip. The controller chip is responsible for setting and managing the frequency and duty cycle of the converters for optimal power conversion efficiency. The current sensing of QM48T45033-NBB0 is based on the use of current-sense feedback while the voltage sensing is based on an external resistor divider. It offers a remote, programmable on/off feature for advanced power management. The power stage features synchronous rectification for improved efficiency and an integrated boot capacitor for higher output voltage accuracy. In addition, it also has over-voltage, over-current and short circuit protection to ensure operation safety.

Conclusion

In conclusion, QM48T45033-NBB0 is an advanced DC-DC converter used to convert voltage from a higher level to a lower level, or vice-versa. It offers wide input voltage range and efficient power solutions in a compact package. It can be used for many application fields such as industrial, automotive, telecommunication, and consumer electronics. This device is based on a synchronous buck architecture and uses current sensing and voltage sensing for optimal power conversion efficiency. Furthermore, it also features integrated boot capacitor, remote, programmable On/Off feature, over-voltage, over-current, and short circuit protection.

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