ID 原文 译文
12354 提出了一种可以在宽频范围内控制恒定导通时间 (COT) 电流模环路开关频率的锁相环 (PLL) 电路。 A phase-locked loop ( PLL) circuit to control the constant on time ( COT) currentmode loop＇s switching frequency in a wide frequency range was presented．
12355 电路采用经典电荷泵锁相结构，针对传统 COT 锁频方案中瞬态频率锁定速度和频率锁定精度性能无法兼顾的问题，通过一个由三极管构成的电流乘法计算单元引入 PLL 控制和输入电压前馈信息改变计时电容的充电电流，控制开关频率，保证了电路的锁频速度和精度。 The classical charge pumpphase-locked structure was adopted in the circuit． To solve the problem that transient frequency lockingspeed and frequency locking accuracy of the traditional COT frequency-locking scheme cannot be simultaneously obtained，a current multiplication calculation unit based on transistors was used to introduce thePLL control and the feedforward information of input voltage． Thus the charging current of timingcapacitor was changed to control the switching frequency，ensuring the frequency locking speed and accuracy of the circuit．
12356 此外，锁相环的环路参数在宽电压变化范围内不发生变化，简化了频率补偿网络的设计。 In addition，the loop parameters do not change within a wide voltage range，whichsimplifies the design of the frequency compensation network.
12357 采用 0. 25 μm 60 V 双极型－CMOS －DMOS (BCD) 工艺对电路进行了仿真和流片，芯片面积为2. 83 mm2。 The circuit was simulated and fabricated with the 0. 25 μm 60 V bipolar-CMOS-DMOS (BCD) process，and the chip area is 2. 83 mm2.
12358 结果表明，该电路在 200 kHz～1. 8 MHz 的开关频率内均可以实现良好的频率锁定功能，开关频率的波动幅度小于 0. 2 kHz，验证了设计的正确性。 The results show that the circuit can achieve good frequency locking function in the 200 kHz－1. 8 MHz switching frequency range． The frequency fluctuation is less than 0. 2 kHz，which verifies the validity of the scheme．
12359 基于 SMIC 55 nm CMOS 工艺，设计并制备了工作在 1. 2 V 电源电压下的超低功耗 ＲC振荡器。 An ultra-low power consumption ＲC oscillator under 1. 2 V power supply voltage was designed and fabricated based on SMIC 55 nm CMOS process．
12360 该振荡器主要包括运算放大器、压控振荡器 (VCO)、基准电流源、低温漂电阻和可修调开关电容以及非交叠时钟产生电路。 The oscillator mainly consists of the operational amplifier，voltage controlled oscillator (VCO)，reference current source，low temperature drift resistor, repairable switching capacitor and non-overlapping clock generation circuit．
12361 该振荡器用工作在亚阈值区的运算放大器和 VCO 取代了传统单比较器型 ＲC 振荡器中的比较器，显著降低了功耗；用开关电容取代了充放电电容，并且将输出时钟的频率转换成了阻抗，与参考电阻进行比较。 The proposed oscillator replaced the comparator in the traditional single comparator ＲC oscillator with the operationalamplifier and VCO working in sub-threshold region，which significantly reduced power consumption． The switched capacitors replaced the charge and discharge capacitors，and the output clock frequency wasconverted to the impedance，which was compared with the reference resistance．
12362 利用负反馈环路锁定了输出时钟信号频率，从而得到了稳定的时钟信号。 The output clock signalfrequency was locked by the negative feedback loop，thus the stable clock signal was obtained．
12363 测试结果表明，1. 2 V 电源电压、27 ℃ 环境下，该 ＲC 振荡器的输出时钟信号频率为 32. 63 kHz，功 耗 为 65 nW；在 － 10 ～ 100 ℃，其 温 度 系 数 为 1. 95 ×10－4 /℃ ; 在 0. 7～1. 8 V 电源电压内，其电源电压调整率为 3. 2% /V。 The test results show that the ＲC oscillator outputs a 32. 63 kHz output clock signal frequency while consuming65 nW at 1. 2 V supply voltage at 27 ℃ ． The temperature coefficient of the ＲC oscillator is 1. 95 ×10－4 /℃ between －10 ℃ to 110 ℃ ． The supply voltage line sensitivity is 3. 2% /V between 0. 7 V to1. 8 V．