Hauptplatte – Netzteil / Main Board – Power Supply
1
IN
2
CURRENT
INTERNAL
SENSE
REGULATORS
AMPLIFIER
OSCILLATOR
SLOPE
COMP
40/385KHz
CLK
+
+
S
R
0.7V
--
SHUTDOWN
--
CURRENT
COMPARATOR
COMPARATOR
EN
7
LOCKOUT
COMPARATOR
--
2.3V/
2.6V
+
+
--
MP1593
3A, 28V, 385KHz
FREQUENCY
--
0.7V
1.22V
+
ERROR
AMPLIFIER
STEP-DOWN CONVERTER
FOLDBACK
COMPARATOR
5
6
8
FB
COMP
SS
+
5V
--
1
BS
M1
Q
Q
3
SW
M2
1.8V
4
GND