參數(shù)資料
型號: AFE031AIRGZR
廠商: Texas Instruments
文件頁數(shù): 26/57頁
文件大?。?/td> 0K
描述: IC AFE POWERLINE COMM 48VQFN
標(biāo)準(zhǔn)包裝: 2,500
位數(shù): 10
通道數(shù): 1
電壓 - 電源,模擬: 3 V ~ 3.6 V
電壓 - 電源,數(shù)字: 3 V ~ 3.6 V
封裝/外殼: 48-VFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝: 48-VQFN 裸露焊盤(7x7)
包裝: 帶卷 (TR)
0.0
3.3
ZC
O
U
T
Time (5 ms/div)
0
50
100
350
0
-350
120
V
AC
to
240
V
AC
50
Hz
to
60
Hz
+
120 VAC
to 240 VAC
50/60 Hz
PS2505-1A Opto Isolator
or equivalent
AVDD
3.3 V
ZC
IN
ZC
OUT
AV
DD
AGND
Zero
Crossing
Inside the AFE031
SBOS531D – AUGUST 2010 – REVISED MAY 2012
For maximum protection of the AFE031 against line transients, it is recommended to use Schottky diodes as
indicated in Figure 38. These diodes should limit the ZC_IN pins (pins 38 and 39) to within the maximum rating
of (AVDD + 0.4 V) and (AGND – 0.4 V). Some applications may require an isolated zero crossing detection circuit.
With a minimal amount of components, the AFE031 can be configured for isolated zero crossing detection, as
Figure 40. Isolated Zero Crossing Detection Using the AFE031
Isolated zero crossing waveforms are shown in Figure 41.
Figure 41. Isolated Zero Crossing Waveforms
32
Copyright 2010–2012, Texas Instruments Incorporated
Product Folder Link(s): AFE031
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