Accelerated startup circuit based on reference source for chip
A technology for accelerating startup and startup circuits, applied in electrical components, electronic switches, pulse technology, etc., can solve the problems of inability to control the startup speed of the main circuit in the chip, and the startup circuit cannot control the speed of power-on and power-off, so as to reduce leakage discharge. time, the effect of reducing charge residue and reducing overshoot
Active Publication Date: 2022-02-01
BEIJING SMARTCHIP MICROELECTRONICS TECH COMPANY +3
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Problems solved by technology
However, the existing start-up circuit cannot control the speed of power-on and power-off, so it cannot control the start-up speed of the main circuit in the chip, and it is impossible to avoid the impact of the overshoot generated during power-on on the reference source circuit in the chip
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[0033] Specific embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.
[0034] figure 2 It is a block diagram of a reference source-based acceleration startup circuit for a chip provided by an embodiment of the present invention. Such as figure 2 As shown, the embodiment of the present invention provides an accelerated startup circuit based on a reference source for a chip, including a startup circuit, a bias current generation circuit, a reference voltage generation circuit, an accelerated startup circuit and a secondary accelerated startup circuit. The acceleration startup circuit is arranged between the bias current generating circuit and the reference voltage generating circuit, and is used to synchronize the power-on process ...
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The present invention relates to the technical field of integrated circuits, and provides an accelerated startup circuit for chips based on a reference source, including: a startup circuit, a bias current generation circuit, a reference voltage generation circuit, and an accelerated startup circuit; the accelerated startup circuit Set between the bias current generating circuit and the reference voltage generating circuit, it is used to isolate the power-on process of the bias current generating circuit from the power-on process of the reference voltage generating circuit, and is turned on after the bias current generating circuit is powered on The power-on process of the reference voltage generating circuit is used to block the mutual interference between the bias current generating circuit and the reference voltage generating circuit during the power-on process. On the one hand, the present invention reduces the number of nodes participating in charging in the circuit, avoiding the overall circuit in the chip participating in the startup process and slowing down the startup time; Accelerate the start-up speed of the overall circuit in the chip.
Description
technical field [0001] The invention relates to the technical field of integrated circuits, in particular to a reference source-based accelerated startup circuit for chips. Background technique [0002] The reference source circuit is the most commonly used basic circuit in the chip, which can be used independently or integrated. The analog integrated circuit in the chip usually needs to use the reference source circuit to generate the reference voltage and reference current that do not change with the change of power supply voltage, temperature and process error, so as to provide suitable and stable static bias for other circuits, so that the integrated circuit Work stably in the desired state. [0003] figure 1 is the architecture diagram of the reference source circuit, such as figure 1 As shown, the reference source circuit is composed of a bias current generation circuit (including a start-up circuit), a VBE generation circuit, a voltage divider circuit, and a PTAT (...
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IPC IPC(8): H03K17/04
CPCH03K17/04
Inventor 赵东艳胡毅李德建肖衍马永旺甘杰李振国冯文楠尹芸婷汪宇怀
Owner BEIJING SMARTCHIP MICROELECTRONICS TECH COMPANY