Datasheet

Block diagram PM6641
18/47 Doc ID 13510 Rev 3
6 Block diagram
Figure 27. Functional and block diagram
Table 7. Legend
TD Tracking discharge enable
NTD Non-tracking discharge enable
EN VTTREF buffer enable
HiZ LDO high impedance mode enable
COMP_1S05
SGND_1S05
VFB_1S05
VOUT_1S8
SGND_1S5
R
R
EN
NTD
VREF = 0.8V
NTD
OSC
? 1
? 3
? 2
ASM
ASM
ASM
ANTI X
COND
ANTI X
COND
ANTI X
COND
ZERO
CROSS &
VALLEY
C.L.
ZERO
CROSS &
VALLEY
C.L.
ZERO
CROSS &
VALLEY
C.L.
SS CONTROL
SS
CONTROL
SS
CONTROL
+
_
+
_
0.9V
+
_
+
_
+
_
gm
+
_
gm
+
_
gm
OVP
UVP
OVP
UVP
OVP
UVP
+
_
PULSE
SKIP
PULSE
SKIP
PULSE
SKIP
UVLO
THERMAL PROTECTION
1.237V
+
_
+
_
+
_
+
_
+
_
+
_
VREF
VREF
VREF
VIMIN
VIMAX
VIMIN
VIMAX
VIMAX
VIMAX
VIMIN
VIMIN
VREF+10%
V
REF-10%
V
REF-10%
V
REF+10%
VREF+10%
V
REF-10%
HiZ
PG_1S05
SS_1S05
SW_1S05
VIN_1S05
SET_SWF
VTTGND
VTT
LDOIN
VTTFB
VTTREF
PG_1S8
VIN_1S8
VSW_1S8
SGND_1S8
COMP_1S8
VFB_1S8
SS_1S8
VIN_1S5
VSW_1S5
COMP_1S5
VFB_1S5
SS_1S5
PG_1S5
CSNS
DSCG AVCC
VCC
EN
HiZ TD NTD
CONTROL LOGIC
SET_PH1
0.9V
PEAK
CURR.
LIMIT
PEAK
CURR.
LIMIT
PEAK
CURR.
LIMIT
COMP_1S05
SGND_1S05
VFB_1S05
VOUT_1S8
SGND_1S5
R
R
EN
NTD
VREF = 0.8V
NTD
OSC
? 1
? 3
? 2
ASM
ASM
ASM
ANTI X
COND
ANTI X
COND
ANTI X
COND
ZERO
CROSS &
VALLEY
C.L.
ZERO
CROSS &
VALLEY
C.L.
ZERO
CROSS &
VALLEY
C.L.
SS CONTROL
SS
CONTROL
SS
CONTROL
+
_
+
_
0.9V
+
_
+
_
+
_
gm
+
_
gm
+
_
gm
OVP
UVP
OVP
UVP
OVP
UVP
+
_
PULSE
SKIP
PULSE
SKIP
PULSE
SKIP
UVLO
THERMAL PROTECTION
1.237V
+
_
+
_
+
_
+
_
+
_
+
_
VREF
VREF
VREF
VIMIN
VIMAX
VIMIN
VIMAX
VIMAX
VIMAX
VIMIN
VIMIN
VREF+10%
V
REF-10%
V
REF-10%
V
REF+10%
VREF+10%
V
REF-10%
HiZ
PG_1S05
SS_1S05
SW_1S05
VIN_1S05
SET_SWF
VTTGND
VTT
LDOIN
VTTFB
VTTREF
PG_1S8
VIN_1S8
VSW_1S8
SGND_1S8
COMP_1S8
VFB_1S8
SS_1S8
VIN_1S5
VSW_1S5
COMP_1S5
VFB_1S5
SS_1S5
PG_1S5
CSNS
DSCG AVCC
VCC
EN
HiZ TD NTD
CONTROL LOGIC
SET_PH1
0.9V
PEAK
CURR.
LIMIT
PEAK
CURR.
LIMIT
PEAK
CURR.
LIMIT