參數(shù)資料
型號： 88EM8081XX-SAG2C000-T
廠商： MARVELL SEMICONDUCTOR INC
元件分類： 穩(wěn)壓器
英文描述： 2 A POWER FACTOR CONTROLLER, 120 kHz SWITCHING FREQ-MAX, PDSO8
封裝： GREEN, SOIC-8
文件頁數(shù)： 20/64頁
文件大?。?/td> 667K
代理商： 88EM8081XX-SAG2C000-T
Functional Characteristics
VFB Characteristics for Over Voltage Protection
Copyright 2010 Marvell
Doc. No. MV-S106340-01 Rev. B
August 6, 2010, Preliminary Information
Document Classification: Proprietary
Page 27
4.2
VFB Characteristics for Over Voltage Protection
Figure 8: IDD vs. VFB
Figure 9: VFB_OVP vs. Temperature
Test Conditions:
VDD = 12V
VIN = 0V
FSW = 118kHz
CGate = 1nF
V_Isns = 0V
Test Conditions:
VDD = 12V
VIN = 0V
FSW = 118kHz
CGate = 1nF
V_Isns = 0V
Figure 10: VFB_OVP Hysteresis vs. Temperature
Figure 11: VFB_OVP_LATCH vs. Temperature
Test Conditions:
VDD = 12V
VIN = 0V
FSW = 118kHz
CGate = 1nF
V_Isns = 0V
Test Conditions:
FSW = 118kHz
VDD = 12V
CGate = 1nF
VIN = 0V
V_Isns = 0V
3.0
3.5
4.0
4.5
5.0
5.5
2.0
2.2
2.4
2.6
2.8
3.0
3.2
VFB (V)
ID
D
(
m
A
)
VFB Down
VFB Up
0
1
2
3
4
-40
-20
0
20406080
Temperature (C)
VF
B
(
V
)
OVP_Threshold
Recover Threshold
OVP Threshold
Recovery Threshold
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
-40
-20020
40
60
80
Temperature (C)
VF
B
(
V
)
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
-40
-20
0
20
40
60
80
Temperature (°C)
VF
B
(
V
)
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