Allicdata Part #: | MAX1978ETM+-ND |
Manufacturer Part#: |
MAX1978ETM+ |
Price: | $ 0.00 |
Product Category: | Integrated Circuits (ICs) |
Manufacturer: | Maxim Integrated |
Short Description: | IC CNTRLR INT TEMP 48TQFN |
More Detail: | Peltier Module, Thermoelectric Cooler PMIC 48-TQFN... |
DataSheet: | MAX1978ETM+ Datasheet/PDF |
Quantity: | 781 |
Series: | -- |
Packaging: | Tube |
Part Status: | Active |
Applications: | Peltier Module, Thermoelectric Cooler |
Current - Supply: | -- |
Voltage - Supply: | 3 V ~ 5.5 V |
Operating Temperature: | -40°C ~ 85°C |
Mounting Type: | Surface Mount |
Package / Case: | 48-WFQFN Exposed Pad |
Supplier Device Package: | 48-TQFN (7x7) |
Base Part Number: | MAX1978 |
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The MAX1978ETM+ is a highly specialized power management integrated circuit (PMIC) that enables a single power supply to manage the power of a wide range of electronic devices. This PMIC is designed to provide devices with a small-to-medium current operating voltage range while maintaining a low-noise profile and high power efficiency. With its two-switch forward conversion topology, the MAX1978ETM+ meshes excellence in power utilization, low output ripple noise and efficiency, ease of use, and the protection of sensitive components.
Applications
The MAX1978ETM+ is a versatile PMIC that has been successfully implemented in various applications, including consumer electronics, consumer audio, consumer and industrial appliances, optoelectronics, industrial control, office automation, and automotive applications.
The MAX1978ETM+ offers a unique power-management solution that allows a single power supply to provide power for multiple boards and multiple channels. The MAX1978ETM+ supports voltages from 2.5V to 5.5V, allowing it to be used in a wide variety of applications. It can provide up to 20A of output current, and has the ability to deliver up to 52V of high-side output voltage. The device also provides a separate ground connection for power and signal, which eliminates potential noise problems associated with the power ground floating on the board.
The device includes protection features such as over-temperature, over-current, and under-voltage protection, as well as fault reporting for immediate system shutdown. An output slew rate limit and enable/disable input pin make the MAX1978ETM+ suitable for switching sensitive loads. Moreover, a wide range of reset features such as assertion by reset of power up and periodic power failure reset can be configured.
Working Principle
The MAX1978ETM+ is based on a two-switch forward conversion topology, which helps reduce output ripple noise and increase the efficiency. The two-switch forward conversion topology is based on two power MOSFETs and an inductor (L1). The two MOSFETs are used to control the output voltage; one MOSFET is used to switch on the inductor, and the other is used to switch off the inductor. The switching cycle is represented by the figure below.
The MAX1978ETM+ PMIC uses a Frequency-Mode Control (FMC) Architectured regulator. The FMC regulator works by using a hysteretic comparator to generate a square voltage waveform at the switching frequency (discussed below). This square wave is then used to control the high-side and low-side MOSFETs of the output stage.
The regulator has two main control loops: the voltage loop and the current loop, which also gov- erns the switching frequency. The voltage loop senses the output voltage and controls the duty cycle of the two MOSFETs, which regulates the output voltage to the desired value. The current loop is then used to control the switching frequency, depending on the amount of load current. As the amount of load current increases, the current loop reduces the switching frequency, thus reducing the switching losses.
Conclusion
The MAX1978ETM+ is an advanced PMIC that meets the needs of various device designs and applications. Its two-switch forward conversion topology merges efficiency and low output ripple noise, and the integrated protection features make it an ideal choice for designs requiring power management solutions.
The specific data is subject to PDF, and the above content is for reference
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