Functional Block Diagram - Power integrations TOPSwitch-HX Series Manual

TOP252-262
CONTROL (C)
Z
C
SHUNT REGULATOR/
ERROR AMPLIFIER
-
+
I
FB
CURRENT
LIMIT
ADJUST
MULTI- V
BG
FUNCTION (M)
V OVP
LINE
SENSE
Figure 3a. Functional Block Diagram (P and G Packages).
CONTROL (C)
Z
C
SHUNT REGULATOR/
ERROR AMPLIFIER
I
FB
CURRENT
LIMIT
ADJUST
EXTERNAL
CURRENT
LIMIT (X)
VOLTAGE
MONITOR (V)
V
LINE
SENSE
Figure 3b. Functional Block Diagram (M Package).
4
Rev. J 08/16
V
C
+
5.8 V
-
4.8 V
5.8 V
INTERNAL UV
COMPARATOR
V I (LIMIT)
ON/OFF
+ V
T
STOP LOGIC
STOP SOFT
OV/
START
UV
OSCILLATOR
DC
DC
MAX
WITH JITTER
MAX
F REDUCTION
F REDUCTION
SOFT START
I
PWM
FB
K
I
PS(UPPER) PS(UPPER)
K I
PS(LOWER) PS(LOWER)
V
C
+
5.8 V
-
-
4.8 V
5.8 V
+
INTERNAL UV
COMPARATOR
V I (LIMIT)
ON/OFF
V + V
BG T
STOP LOGIC
1 V
STOP SOFT
OVP OV/ START
UV
OSCILLATOR
DC
DC
WITH JITTER
MAX
MAX
F REDUCTION
F REDUCTION
SOFT START
I
PWM
FB
I I
PS(UPPER) PS(UPPER)
I
I
PS(LOWER) PS(LOWER)
0
INTERNAL
1 SUPPLY
SOFT START
÷ 16
SHUTDOWN/
AUTO-RESTART
HYSTERETIC
THERMAL
SHUTDOWN
D
MAX
CLOCK
S
R
OFF
0
INTERNAL
SUPPLY
1
SOFT START
÷ 16
SHUTDOWN/
AUTO-RESTART
HYSTERETIC
THERMAL
SHUTDOWN
D
MAX
CLOCK
OFF
DRAIN (D)
-
+
K
-
PS(UPPER)
+
K -
PS(LOWER)
+
CURRENT LIMIT
COMPARATOR
SOURCE (S)
CONTROLLED
TURN-ON
GATE DRIVER
Q
LEADING
EDGE
BLANKING
PI-4508-120307
-
+
I
-
PS(UPPER)
+
I -
PS(LOWER)
+
CURRENT LIMIT
COMPARATOR
SOURCE (S)
CONTROLLED
TURN-ON
GATE DRIVER
S Q
LEADING
EDGE
R
BLANKING
PI-4643-040507
SOURCE (S)
DRAIN (D)
SOURCE (S)
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