Microchip Technology ADM00427 데이터 시트
MCP16323
DS22284A-page 16
© 2011 Microchip Technology Inc.
4.1.9
OVERTEMPERATURE
PROTECTION
PROTECTION
Overtemperature protection limits the silicon die
temperature to +170°C by turning the converter off. The
normal switching resumes at +160°C.
temperature to +170°C by turning the converter off. The
normal switching resumes at +160°C.
FIGURE 4-1:
MCP16323 Block Diagram.
Amp
-
+
COMP
-
+
LS Drive
HS Drive
Gate Drive
Control
BOOST
Voltage
Voltage
PGND
Monitor and
Control
EN
PG
OV
Proon
UV
Current
Limit
OTEMP
V
REF
and
start
+
+
Slope
Comp
1MHz
Oscillator
V
OUT
Compe
COMP
-
+
V
REF
SW
C
BOOST
L
C
OUT
4.2V
R
TOP
R
BOT
V
IN
PFM
Comparator
FB
C
IN
CS
V
OUT
BOOST
PWM
Comparator
SGND
V
OUT