L6728DTR STMicroelectronics, L6728DTR Datasheet - Page 17

IC PWM CTLR 1PH POWERGOOD 10DFN

L6728DTR

Manufacturer Part Number
L6728DTR
Description
IC PWM CTLR 1PH POWERGOOD 10DFN
Manufacturer
STMicroelectronics
Datasheet

Specifications of L6728DTR

Pwm Type
Voltage Mode
Number Of Outputs
1
Frequency - Max
330kHz
Duty Cycle
80%
Voltage - Supply
5 V ~ 12 V
Buck
Yes
Boost
No
Flyback
No
Inverting
No
Doubler
No
Divider
No
Cuk
No
Isolated
No
Operating Temperature
-40°C ~ 125°C
Package / Case
10-DFN
Frequency-max
330kHz
Duty Cycle (max)
80 %
Mounting Style
SMD/SMT
Switching Frequency
300 KHz
Operating Supply Voltage
5 V to 12 V
Supply Current
6 mA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
497-10432-2

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
L6728DTR
Manufacturer:
ST
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Company:
Part Number:
L6728DTR
Quantity:
20 000
Part Number:
L6728DTR@@@@@
Manufacturer:
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L6728D
Figure 6.
To place the poles and zeroes of the compensation network, the following suggestions can
be followed:
Open loop converter singularities:
a)
b)
Compensation network singularities frequencies:
a)
b)
c)
d)
a)
Set the gain R
according to the approximated formula (suggested values for R
of a few kΩ):
F
F
F
F
F
F
----------
R
R
LC
ESR
Z1
Z2
P1
P2
FB
F
Example of type III compensation
=
=
=
=
=
=
compensation
converter gain
loop gain
open loop
=
EA gain
closed
------------------------------
2π R
---------------------------------------------------- -
------------------------------------------------- -
2π R
------------------------------ -
2π R
open loop
--------------------------------- -
2π L C
F
------------
F
------------------------------------------- -
2π C
gain
0dB
LC
(
1
R
Gain
1
[dB]
0dB
1
F
F
S
FB
ΔV
------------------ -
OUT
F
C
1
C
V
OUT
1
1
/R
+
-------------------- -
C
OSC
C
F
IN
S
R
F
FB
F
+
ESR
S
) C
C
C
in order to obtain the desired closed loop regulator bandwidth
Doc ID 16498 Rev 1
P
P
S
F
Z1
F
F
LC
Z2
F
F
ESR
P1
F
0dB
F
P2
20log (R
F
/R
20log (V
FB
Log (Freq)
)
IN
Application details
/ΔV
FB
OSC
are in the range
)
17/33

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