SP000081008 Infineon Technologies, SP000081008 Datasheet - Page 13

• Manufacturer Part Number: SP000081008
• Manufacturer: Infineon Technologies

Specifications of SP000081008

• Start-up Supply Current: 1mA
• Operating Supply Voltage (min): -0.3V
• Operating Supply Voltage (max): 17V
• Operating Temp Range: -25C to 125C
• Operating Temperature Classification: Commercial
• Package Type: DSO
• Pin Count: 14
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Compliant

Error Amplifier EA / Soft-Start (Pin 3, Pin 4)
Figure 9 shows the simplified Error Amplifier circuit. The positive input of the Error
Amplifier (EA) is the reference voltage 5 V. The negative input is the pulsed output
voltage from the auxiliary winding, divided by
dimensioned only for delaying zero crossings and smoothing the first spike after switch-
off. Smoothing of the regulation voltage is done with the soft start capacitor
During start up
regulation
voltage diagrams of the Error Amplifier circuit.
Figure 9
Figure 10
Version 2.0
C
4
is charged and discharged with pulsed currents. Figure 10 shows the
Error Amplifier
Regulation Pulse Diagram
C
4
is charged with a current of approx. 2 A (Soft Start). For primary
13
R
31
and
R
32
TDA 16846/16846-2
. The capacitor
TDA 16847/16847-2
C
4
31 Jul 2003
at Pin 4.
C
3
is