Multi-output switched capacitor converter applicable for multi-layer stacked loads
An output capacitor, multi-channel output technology, applied in output power conversion devices, conversion equipment without intermediate conversion to AC, electrical components, etc., can solve problems such as large power supply voltage and ripple, and reduce voltage ripple and current. Small deviation, the effect of reducing the fluctuation of the power supply voltage
Active Publication Date: 2018-11-23
XI AN JIAOTONG UNIV
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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 cau
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[0032] Example one
[0033] Manufactured using standard 180nm CMOS process, in V DD A 4-layer static random access memory (SRAM) array connected in series with GND. The SRAM array uses 8T-SRAM cells. The switched capacitor converter uses a transmission gate as a power switch. The operating frequency of the internal flying capacitor CB is 10 kHz. With this power supply method, the working voltage of each SRAM layer can be kept stable and consistent, the power supply voltage adjustment accuracy can reach more than 99%, and the measured efficiency can be as high as 94% in the worst case.
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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...
Claims
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Login to view more IPC IPC(8): H02M3/18H02M1/14
CPCH02M1/14H02M3/18
Inventor 范世全赵洋董军张芮苟伟耿莉
Owner XI AN JIAOTONG UNIV
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