参数资料
型号: TPS51916EVM-746
厂商: Texas Instruments
文件页数: 18/34页
文件大小: 0K
描述: EVAL MODULE FOR TPS51916-746
标准包装: 1
系列: D-Cap™, D-Cap2™
主要目的: 特殊用途 DC/DC,DDR 存储器电源
输出及类型: 1,非隔离
输出电压: 1.2 V ~ 1.5 V
电流 - 输出: 20A
输入电压: 8 ~ 20 V
稳压器拓扑结构: 降压
频率 - 开关: 500kHz
板类型: 完全填充
已供物品:
已用 IC / 零件: TPS51916
其它名称: 296-30054
TPS51916EVM-746-ND
TPS51916
SLUSAE1D – DECEMBER 2010 – REVISED JUNE 2012
Jitter is another attribute caused by signal-to-noise ratio of the feedback signal. One of the major factors that
determine jitter performance in D-CAP? mode is the down-slope angle of the VDDQSNS ripple voltage.
Figure 36 shows, in the same noise condition, that jitter is improved by making the slope angle larger.
V VDDQSNS
Slope (1)
Jitter
(2)
Slope (2)
Jitter
20 mV
(1)
V REFIN
V REFIN +Noise
t ON
t OFF
UDG-10139
Figure 36. Ripple Voltage Slope and Jitter Performance
For a good jitter performance, use the recommended down slope of approximately 20 mV per switching period as
shown in Figure 36 and Equation 2 .
V OUT ESR
f SW ′ L X
where
3 20mV
?
V OUT is the VDDQ output voltage
?
L X is the inductance
(2)
18
Copyright ? 2010–2012, Texas Instruments Incorporated
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