Abstract
This paper proposes a new and improved fast-transient-response low-transient-voltage boost converter with pseudo-current hysteresis-controlled techniques (PCHC). The converter uses the rail-to-rail current-sensing circuit to provide a hysteresis-controlled signal, helping to speed up the transient response and improve the overall efficiency. The proposed boost converter has been fabricated with TSMC $0.18~\mu \text{m}$ CMOS 1P6M technology, and the chip area is $1.18\times 1.18$ mm2 (include PADs). The measured results show that the input voltage range is from 0.5 V to 1 V, the output voltage is set as 1.8 V, and the output load current range is from 10 mA to 100 mA. When the output load current changes from 10 mA to 100mA and 100 mA to 10 mA, the transient responses are both 2 $\mu \text{s}$ , and peak power efficiency is 88.5% at the output load current of 75 mA.
Highlights
Today's technology is changing with each passing day, and the development of artificial intelligence, 5G and the Internet of Things has made life more convenient
Boost converters are widely used in fields such as green energy and LED drivers
When the load current changes from light to heavy, the instantaneous voltage drops to ∆V1
Summary
Today's technology is changing with each passing day, and the development of artificial intelligence, 5G and the Internet of Things has made life more convenient. When the loads of the PMICs change, the output voltage of the circuit will produce a transient voltage. When the load current changes from light to heavy, the instantaneous voltage drops to ∆V1. This voltage is the so-called transient voltage, known as undershoot. When the load current changes from heavy to light, the instantaneous voltage rises by ∆V2. The hysteresiscontrolled technology can achieve fast transient response, because it can quickly turn on or off the power stage transistor through a hysteresis trigger when the load changes [7,8].
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