Datasheet

SM72442
PM_O
UT
P
M
Pulse
High
SM72482
IN
_A
IN_
B
2.0
0k
400 kHz
Square
Wave
VC
C
VE
E
10
V
0.47 PF
OUT
_A
OUT_
B
10k
499
0.47 PF
150
pF
499
10k
PV
(+)
VOUT
(+)
Fast
Slow
No Slew
1200 ms
40V
30V
'V = 10V
20 ± 40 ms
(Frequency
dependent)
600 ms
SM72442
SNVS689H –OCTOBER 2010–REVISED APRIL 2013 www.ti.com
Figure 6. Slew Rate Limitation Circuit
Figure 7. Sample Application for Panel Mode Operation
RESET PIN
When the reset pin is pulled low, the chip will cease its normal operation and turn-off all of its PWM outputs
including the output of PM_OUT pin. Below is an oscilloscope capture of a forced reset condition.
Figure 8. Forced Reset Condition
As seen in Figure 8, the initial value for output voltage and load current are 28V and 1A respectively. After the
reset pin is grounded both the output voltage and load current decreases immediately. MOSFET switching on the
buck-boost converter also stops immediately. VLOB indicates the low side boost output from the SM72295.
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