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參數(shù)資料
| 型號： | FAN8800 |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | MOSFETs |
| 英文描述： | Single IGBT Gate Drive IC(單IGBT門驅(qū)動集成電路) |
| 中文描述： | 2 A AND GATE BASED MOSFET DRIVER, PDIP8 |
| 封裝： | 0.300 INCH, DIP-8 |
| 文件頁數(shù)： | 8/15頁 |
| 文件大小： | 122K |
| 代理商： | FAN8800 |
FAN8800 (KA3162)
8
3. OCP DELAY TIME (T
OCP
)
1) If the saturation detector(DESAT or Vpin8 ) is 4.5V < Vpin8 < 6.5V, the Fault-Out signal will be high after T
OCP
.
2) T
COP
(This value is fixed internally) is
4. CHARGE TIME IN THE DE-SATURATION DETECTION
1) When the signal of Drive Output (Vpin5) is high, Q4 turns on and it is operated De-saturation Detection Mode in upper fig-
ure. In this mode, when it detects the voltage of collector- emitter terminal of IGBT through D1.
If Vce(sat) + Vf of D1 > 4.5V, it is operated OCP Mode.
If Vce(sat) + Vf of D1 > 6.5V, it is operated SCP Mode.
When the input signal of IGBT is from low-state to high-state, Q4 turns off and it is operated De-saturation Detection
Mode. On this times, the voltage of collector-emitter terminal of IGBT is not saturation-state yet.
This period is said On Time Delay (Td (on) ).
Here, the operation of C
DESAT
is following ; When C
DESAT
is charged by current source of 300uA and so it prevents
operating error for Td (on) of IGBT.
2) Slope of Vpin8 is
T
OCP
50pF 3
μ
A
83
μ
s
5V
×
=
=
8
L
O
A
D
Vlink
4.5V
6.5V
Internal Circuit
300uA
Detect
Control
C
DESAT
+
-
+
-
Q4
D1
V
T
300
μ
A C
DESAT
=
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