Multi-output switched capacitor converter applicable for multi-layer stacked loads

Abstract

The invention discloses a multi-output switched capacitor converter applicable for multi-layer stacked loads. The multi-output switched capacitor converter comprises a first drive signal input end, asecond drive signal input end, N inner fly capacitors, N output capacitors, 2N branches and N interlayer loads, wherein the 2i-th branch, the (2i-1)-th branch, the i-th inner fly capacitor and the i-th output capacitor form a i-th power supply module; and the power supply modules are stacked in sequence. The multi-output switched capacitor converter is relatively low in voltage ripple and relatively high in conversion efficiency.

Description

technical field [0001] The invention belongs to the field of integrated circuit design and testing, and relates to a multi-output switched capacitor converter suitable for multi-layer stacked loads. Background technique [0002] With the rapid development of biomedicine and information technology, ultra-low power consumption components are widely used in implanted medical equipment and wearable devices. Since most portable devices run on batteries, it is important to be as energy efficient as possible to prolong life. Reducing the power supply voltage of digital circuit components to the region below or close to the threshold value is very important to reduce the energy consumption of the circuit, and the optimal operation is achieved at the minimum energy point. [0003] Conventional methods of reducing the load supply voltage include using an LDO or buck converter to regulate the input voltage to a lower output voltage. However, because of the low output power and the hi...

AI Technical Summary

Problems solved by technology

While there is a typical architecture of embedding two subsystems into an energy delivery system, which saves system-level energy in half by eliminating the need for switching converters for ultra-low power applications, two identical subsystem cores perform data processing in exchange operations and transmission may cause large supply voltage ripple when each core starts to work, and this structure requires at least twice the chip area

Although there are some effective methods to help reduce voltage ripple, such as adaptive full digital ripple suppression technology can achieve ripple control, but the efficiency still needs to be improved

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