参数资料
型号: OPENLPPOL-EVB
厂商: Silicon Laboratories Inc
文件页数: 18/36页
文件大小: 0K
描述: BOARD EVAL OPEN-LOOP POL
标准包装: 1
主要目的: 电源管理,电流感应
嵌入式:
已用 IC / 零件: Si8410,Si8512,Si8540
主要属性: 单相 POL,100 ~ 500 kHz 切换频率
次要属性: 20 ~ 80% 可变占空比
已供物品:
产品目录页面: 628 (CN2011-ZH PDF)
其它名称: 336-1919
Si85xx
3.3.4. Setting Reset Time t R
The programmable reset timer is triggered when the states of the signals applied to R1–R4 cause the associated
logic expression in Table 11 to go high (transition to the TRUE state).
Because this timer is re-triggerable, R1–R4 must remain TRUE for the duration of the desired t R as shown in
Figure 15. Should R1–R4 transition FALSE during t R , integrator reset will be immediately halted, resulting in lower
measurement accuracy due to higher integrator offset error.
CURRENT
R1–R4 TRUE
for programmed
t R (minimum)
TRUE
R1–R4 STATE
Programmed
value of t R
0 ns (min)
FALSE
Si85xx STATUS
RESET
MEASURE
Si85xx OUTPUT
Figure 15. Correct t R Programming Using Resistor from TRST Input to Ground
18
Preliminary Rev. 0.4
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