TL1451 (IC201):
PWM control, voltage range for working: 3.6~35V, Has such functions
as short-voltage protection, Over-voltage protection, over-current protection and
etc. The function of each pin and the circuit diagram inside are as follows
:
Pin Symbol
Description
Pin Symbol
Description
1
CT
External timing capacitor 9
VCC
Power
supply
2
RT
External timing resistor
10
2OUT
Output 2
3
1IN+
Positive input for error amplifier 1
11
2DTC
Output 2 dead time/soft start setting
4
1IN-
Positive input for error amplifier 2
12
2FBK
Error amplifier 2 output
5
1FBK
Error amplifier 1 output
13
2IN+
Positive input for error amplifier
6 1DTC
Output 1 dead time/soft start
setting
14
2IN-
Positive input for error amplifier
7
1OUT
Output 1
15
SCP
Timing latch setting
8
GND
Ground
16
REF
Reference voltage output (2.5v)
19
ViewSonic
Corporation
Co
nfidential
-
Do
Not
Copy
VG920-1
Summary of Contents for VG920-1
Page 24: ...Power Block Function 21 ViewSonic Corporation Confidential Do Not Copy VG920 1...
Page 40: ...37 ViewSonic Corporation Confidential Do Not Copy VG920 1...
Page 43: ...5 7 Packing For Shipping 40 ViewSonic Corporation Confidential Do Not Copy VG920 1...
Page 52: ...6 Trouble Shooting Flow Chart 49 ViewSonic Corporation Confidential Do Not Copy VG920 1...
Page 79: ...11 2 MAIN BOARD PCB BUTTON VIEW 76 ViewSonic Corporation Confidential Do Not Copy VG920 1...
Page 81: ...11 5 POWER PCB TOP VIEW 78 ViewSonic Corporation Confidential Do Not Copy VG920 1...
Page 82: ...11 6 POWER PCB BUTTON VIEW 79 ViewSonic Corporation Confidential Do Not Copy VG920 1...
Page 83: ...11 7 AUDIO PCB TOP VIEW 80 ViewSonic Corporation Confidential Do Not Copy VG920 1...
Page 84: ...11 8 AUDIO PCB BUTTON VIEW 81 ViewSonic Corporation Confidential Do Not Copy VG920 1...
