LM5160DNTR

Voltage - Input (Max):	65V
Supplier Device Package:	12-WSON (4x4)
Package / Case:	12-WFDFN Exposed Pad
Mounting Type:	Surface Mount
Operating Temperature:	-40°C ~ 125°C (TJ)
Synchronous Rectifier:	Yes
Frequency - Switching:	Adj to 1MHz
Current - Output:	1.5A
Voltage - Output (Max):	60V
Voltage - Output (Min/Fixed):	2V
Series:	--
Voltage - Input (Min):	4.5V
Number of Outputs:	1
Output Type:	Adjustable
Topology:	Buck, Flyback
Output Configuration:	Positive, Isolation Capable
Function:	Step-Down
Part Status:	Active
Packaging:	Tape & Reel (TR)

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Introduction to LM5160DNTR

The LM5160DNTR is an integrated PMIC (Power Management Integrated Circuit) designed for DC-DC Buck (step-down) applications. It is ideal for high power and high voltage applications, providing up to 40A of output current and 4V to 80V of adjustable output voltage. The LM5160DNTR features sinusoidal, continuous conduction mode operation, synchronous rectification, and integrated MOSFETs, allowing it to achieve greater than 97% efficiency. Additionally, the device is protected against various fault conditions, including short-circuit, over-load, and over-temperature, guaranteeing reliable operation over a wide temperature range (-40°C to +125°C).

Application Field & Working Principle

The LM5160DNTR is a wide-input, high-current integrated PMIC specifically designed for use in DC-DC switching regulator applications. One of its main advantages is its wide input voltage range – from 4V to 80V – allowing for great versatility and flexibility when designing power supply systems for different voltage environments. The device is perfect for applications like intelligent power modules (IPMs), DC/DC converter modules, and adjustable voltage power supplies (AVPS).The simplest DC/DC switching regulator configuration is the buck-type converter. The LM5160DNTR features an operating frequency range of 50kHz to 800kHz, allowing designers to switch frequencies to optimize converter performance. To ensure maximum efficiency and limit component stress, the LM5160DNTR uses synchronous rectification in the output stage and operates in continuous conduction mode. This allows the device to provide up to 40A of output current.

Circuit Analysis of the LM5160DNTR

The LM5160DNTR consists of a control stage and an output stage. The control stage consists of an internal pulse width modulator (PWM) for controlling the output voltage. The PWM is a switching circuit that rapidly turns the main switch on and off in order to maintain the desired output voltage. The main switch is an NMOS transistor connected between the input voltage and the inductor. The other component in the control stage is the current sense comparator, whose main function is to monitor the inductor current and adjust the duty cycle of the main switch accordingly.The output stage is made up of an NMOS and PMOS transistor connected in a synchronous rectification configuration. The NMOS and PMOS transistors control the current flow from the input voltage and the inductor. The output voltage is then regulated and regulated by the internal PWM.

Conclusion

The LM5160DNTR is a high-efficiency and high-power PMIC designed for DC-DC switching regulator applications. Its wide input voltage range and wide frequency range make it an ideal solution for IPMs, DC/DC converter modules, and adjustable voltage power supplies. Additionally, its synchronous rectification and continuous conduction mode operation provide efficiency levels of greater than 97%. Through its various protection features, the device ensures reliable operation over a wide temperature range.

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