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AN4172 数据表(PDF) 3 Page - STMicroelectronics

部件名 AN4172
功能描述  IEEE802.3af class 3 PoE converter reference design
PDF  16 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

AN4172 数据表(HTML) 3 Page - STMicroelectronics

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AN4172
Electrical specifications
Doc ID 023723 Rev 1
3/16
1
Electrical specifications
Table 1.
Specifications for 3.3 V output
Parameter
Description
Min.
Typ.
Max.
Unit
Input voltage range
Applied at RJ45 connector
0
57
V
Operative input voltage
42
57
V
UVLO
Vin rising edge
36
V
Vin falling edge
30
V
Auxiliary input voltage range
42
48
56
V
Output voltage (Vout)
Vin = 42 V to 57 V, Iout 0 to Imax
3.25
3.35
3.45
V
Output current (Iout)
Vin = 42 V to 57 V
0
3.5
A
Peak-to-peak output ripple
48 Vin, Iout = Imax
30
50
mVpp
Efficiency DC-DC only
Vin = 48 V, Iout = Imax
90
%
Overall efficiency
Vin = 48 V, Iout = Imax
88
%
Switching frequency
150
kHz



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