TPS56C231
ZHCSNT8 –AUGUST 2022
www.ti.com.cn
7.2 功能方框图
PG high
threshold
PGOOD
+
+
UV threshold
+
+
UV
OV
PG Logic
PG low
threshold
VIN
OV threshold
+
VREG5
LDO
Vref
VREGOK
UVLO
+
+
+
PWM
FB
SS
SS
BOOT
VIN
Internal SS
+
Control Logic
ꢀꢁOn/Off time
ꢀꢁMinimum On/Off
ꢀꢁInternal/External VREG5
ꢀꢁOVP/UVP/TSD
ꢀꢁFCCM/SKIP
Ripple injection
SW
SW
XCON
ꢀꢁSoft-Start
ꢀꢁPGOOD
One Shot
PGND
Ip1
Ih
+
+
EN
OCL
+
+
ZC
Light Load Operation/
Current Limit/
Switching Frequency
Mode
NOCL
THOK
+
OT threshold
Discharge Control
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