AON7702A_101

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AON7702A_101 is a highly integrated power management solution with a small size and high efficiency, providing a conversion platform for high-end applications. It is a single-channel power management solution designed specifically for mobile terminals. Featuring a low-voltage, low-power, highly integrated architecture, AON7702A_101 can save 50% of its board space compared to similar traditional products and reduce multiple power consumption tests. Its high efficiency and small size make it the ideal solution for high-end power management.

AON7702A_101 integrates a MOSFET and pre-driver, which can control the start and stop of two power supply voltages, thereby achieving better power conversion ,thus improving the standby current of the system and increasing the working duration of the battery. AON7702A_101 has a very powerful feature presented below.

• Low voltage drive: AON7702A_101 has a dedicated low voltage pre-driver to support up to 0.7V single supply voltage.
• High power conversion efficiency: AON7702A_101 can achieve an efficiency of 95%.
• Seamless switching between power supply voltages: AON7702A_101 can switch between power supply voltages in 10us.
• Integrated low leakage MOSFET: AON7702A_101 includes a built-in low leakage MOSFET that can reduce the power consumption of the system by over 30%.
• High voltage drive capability: AON7702A_101 can provide a very high drive capability from 5V to 24V.
• Integrated ESD protection: AON7702A_101 has integrated ESD and surge protection on both the high and low voltage sides.

The working principle of the AON7702A_101 is very simple. It consists of a main control block, an auxiliary control block and two power switch blocks. The Main Control Block is responsible for driving the two power devices via two low voltage pre-drivers while the auxiliary control block is responsible for monitoring the system status or controlling other circuits.

The Main Control Block receives commands from the microcontroller and controls the two power switches accordingly. It also provides output voltage feedback to the microcontroller, which is used to adjust the switching frequency and maintain a constant output voltage. The Auxiliary Control Block monitors the system status, such as over temperature, over current and output voltage overshoot, and provides protection for the system.

The two power switches consist of low voltage pre-drivers and high voltage MOSFETs. The pre-driver amplifies the signal from the microcontroller and sends it to the MOSFET to control its on and off states. The MOSFETs provide a low resistance ‘on’ path, while blocking any current flow when turned ‘off’. Thus, the two power switches are responsible for switching the power on and off to the load.

AON7702A_101 has various features and advantages such as low voltage drive, high power conversion efficiency, seamless switching between power supply voltages, integrated low leakage MOSFET, high voltage drive capability and integrated ESD protection, making it the ideal solution for power management applications. It also has a simple working principle and can be easily used in various systems.

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