Datasheet

PHASE_B_OFF
DROPOUT
ZCDA
ZCA
1.7V
/
1.0V
+
16
100ns
Blanking
ZCDB
ZCB
1.7V
/
1.0V
+
1
100ns
Blanking
10CS
Overcurrent
Open
Detection
CS_OPEN
-0.200V /
-0.015V
100ns
Blanking
OC
+
-0.167V /
-0.015V
1-PHASE
3TSET
TSET_FLT
Open/Short
Detection
Interleave
Control
Crossover
Notch
Reduction
Phase A
On-Time Control
Phase B
On-Time Control
T
ON
Modulation
T
ON
Basis
Trigger
T
ON
Modulation
T
ON
Basis
Trigger
PWMA
PWMB
VINAC
STOP_GDA
STOP_GDB
PHASE_B_OFF
GDA14
PGND
13.5V
13 PGND
11 GDB
13.5V
VREF15
12 VCC
UVLO
12.6V
/
10.35V
24V
+
Thermal ShutDown
160°C /
140°C
TSD
+ T
J
UVLO
EN
V
GD
Reg.
6.00V
Reg.
13.5V
VREF
1-PHASE
COMP_DSCHG
7VINAC
+
1.4V
BROWNOUT
2μA Dropout Detection
DROPOUT
+
Brownout Detection
0.70V /
0.35V
440ms Delay
5ms Delay
50mV
4μA
2k
LOW_OV
1.25V
EN
+
50mV
6.48V
LOW_OV
+
120mV
HIGH_OV
+
6.67V
4.95V
2VSENSE
5
COMP
6
AGND
50μS /
250μS
VREF
100nA
+
g
M
+
272mV /
222mV
+
1.0V /
0.8V
4
PHB
EA Gain Control
for Soft-Start
and Dropout
DIS_High_GainDIS_EA
DSCHG_RST
20mV
+
Phase Fail Detector
and
12ms Filter
ZCBZCA
PhaseFail
4.87V
/
4.67V
9 PWMCNTL
8 HVSEN
2.5V
+
HVSEN_OV
12μA
+
VCC
HIGH_OV
STOP_GDA
STOP_GDB
S Q
Q
R
OC
PHASE_B_OFF
DSCHG _RST COMP_DSCHG
BROWNOUT
HVSEN_OV
TSET_FLT
UVLO
CS_OPEN
TSD
EN
Clamping
Clamping
UCC28063
SLUSAO7 – SEPTEMBER 2011 www.ti.com
Functional Block Diagram
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Product Folder Link(s): UCC28063