发表于:2008-06-04 13:49:30
3楼
Peak Input Voltage Vin ②+,③-,⑤800
V
DC ②+,③5
A
Input Current Iin Pulse ②+,③-Duty1/2 10 A
Maximum Power Dissipation PD Ta=25℃
3 W
PD Heatsink Tc=100℃
21
W
Dielectric Strength Vdis Terminals To Case AC 1 min 2 kV
Insulation Resistance Terminals To Case 500VDC 100 MΩ
Max Voltage ④ to ⑥
V④.⑥
④+,⑥6
V
Max Current ⑥ to ④
I⑥.
④
⑥+,④- (
Peak)Duty Max 1/2 200 mA
Reverse Current IZ ⑤+,④MAX
20 mA
●Electrical Characteristics (Tc=25℃)
Item Symbol Conditions Ratings Unit
Zero Gate Voltage Dreain Current IDSS VDS=800V, VGS=0V,②+,③MAX
250 μA
TYP (2.1) Ω
Q1
Static Drain-Source On-State
Resistance RDS(on) ID=2.5A, ②+,③-VGS =10V,⑤+,③MAX
3.0 Ω
Thermal Resistance θjc Junction to Case MAX 2.3 ℃/W
D1
Reverse Current IR VR=800V, ①+,②MAX
10 μA
Forward Voltage VF IF=0.6A, ②+,①MAX
1.7 V
Q2
Fold Back Detection Voltage③+,④TYP
0.7 V
Copyright & Copy;2000 Shindengen Electric Mfg.Co.Ltd
MA4820
●Standard Operating Condition.Design Standard For Application Circuit
Item Conditions Ratings Unit
Input Rated Voltage AC90~276 V
Output Nominal Voltage 12 V
Output Nominal Current 4 A
●Standard Operating Condition.Standard Operating Characteristics(Ta=25℃)
Item Conditions Ratings Unit
Minimum Input Full Load Output Voltage Vin=90V, IO=4.0A 12.0±0.6 V Fig 1, ① Refer
Maximum Input Light Load Output Voltage Vin=276V, IO=0.40A 12.0±0.6 V Fig 1, ② Refer
Over Current Protection Foldback Current Vin=276V, VO=10V MAX 6.0 A Fig 1, ③ Refer
Short Circuit Vin=276V, RO=0.5Ω
Nodamage To Any Device,
Automatic Recovery. -Fig 1, ④ Refer
Figure in ○=Terminal Sign
Fig1. Output Voltage/Current
Copyright & Copy;2000 Shindengen Electric Mfg.Co.Ltd
Drain Current ID [A]
MA4820 Transfer Characteristics
10
8
6
4
2
0
0 4 8 12 16
VDS = 25V
pulse test
TYP
Tch = -20°C
25°C
100°C
150°C
Tch = -20°C
25°C
100°C
150°C
Gate-Source Voltage VGS [V]
10
ID = 2.5A
1
VGS = 10V
pulse test
TYP
Channel Temperature Tch [°C]
-20 0 20 40 60 80 100120140
Static Drain-Source On-state Resistance RDS(ON) [W
0
1
2
3
4
5
VDS = 10V
ID = 1mA
TYP
Gate Threshold Voltage VTH [V]
0
1
2
3
4
5
VDS = 10V
ID = 1mA
TYP
Gate Threshold Voltage VTH [V]
-20 0 20 40 60 80 100120140
Channel Temperature Tch [°C]
Ciss
Ciss
e
1000
Coss
100
Crss
Tc=25°C
TYP
10
Drain-Source Voltage VDS [V]
0 20 40 60 80 100
Capacitance Ciss Coss Crss [pF]
MA4820 Transient Thermal Impedance
0.010.1110100
Transient Thermal Impedance qjc(t) [°C/W]
10-5 10-4 10-3 10-2 10-1 100 101
Time t [s]
Drain Current ID [A]
MA4820 Safe Operating Area
10
1
0.1
0.01
1 10 100 1000
100ms
Tc = 25°C
Single Pulse
200ms
RDS(ON)
limit
Drain-Source Voltage VDS [V]
Power Derating [%
]
MA4820 Power Derating
100
80
60
40
20
0
Channel Temperature Tch [°C]
0 50 100 150