IR38060MGM10TRP

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IR38060MGM10TRP is a monolithic integrated circuit used for DC to DC voltage conversion. It is categoryed as Power Management ICs, Voltage Regulators, DC DC Switching Regulators in particular.

General Features

This model provides a high step up ratio with fixed frequency, current mode peak current mode control. It is operated in the fixed frequency and delivers continuous-conduction-mode (CCM) in its nominal load ranges. Also, it includes an external soft-start plus a unique Pulse-Skipped-Mode (PSM) for ultra-low-standby power loss. Its features for safety include input under-voltage protection, output over-current limitation, output over-voltage protection and thermal shutdown protection. The device has a wide input voltage range from 3.5 to 28V and utilizes a low-profile 8mm X 8mm QFN-26 packaging.

Application field

IR38060MGM10TRP is suitable for many applications due to its features. For example, it can be used for mobile and battery-powered applications, such as mobile phones, digital still cameras, portable radio, digital video camcorders and so on. It can actually provide supplies for any kind of DC-powered devices, such as backlight, RF circuits, audio circuits, etc. This type of devices is perfect for very low noise, high efficiency and low cost DC/DC conversion applications. For the discrete application, it can also be a good alternative for high efficiency switching regulators.

Working Principle and System Application

The working principle of IR38060MGM10TRP is based on the combination of peak current-mode control principle and soft-start functions. It consists of an external MOSFET switch and an internal under-voltage control circuitry. When the voltage on the VIN pin reaches a certain preset voltage, the current-mode PWM comparator will compare the current sense signal with the internal oscillator signal. The result of the comparison will be the MOSFET gate control signal. If the current sense is greater than the oscillator signal, the MOSFET is turned on, otherwise it is turned off. The external soft-start will restrict the startup current and reduce the circuit start-up time. During the normal operation, the IC will monitor the output voltage and adjust the peak current limit accordingly. The internal references and under-voltage protection will guarantee a safe and optimized operation.

System applications of IR38060MGM10TRP contain but not limited to the following. An inductor is commonly used to bump the voltage up, while the output capacitor and load resistor perform the output voltage smoothing and load stabilization. In addition, a flyback transformer is recommended when the input voltage is out of the acceptable range. The addition of an external resistor can also adjust the output capacitance. Finally, a diode and capacitor are also necessary for the regulation and protection of the circuit.

Conclusion

In conclusion, IR38060MGM10TRP is a high performance DC to DC converter with a wide input voltage range and variable output voltage. It features peak current mode control, external soft-start, and pulse pause-skip mode for excellent low noise operation. Its application field covers are wide and it has many system application options. The device brings great convenience to the design of DC-to-DC switching regulators and is a preferred choice for most applications.

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