TDA9115 View Datasheet(PDF) - STMicroelectronics
Part Name
Description
MFG CO.
'TDA9115' PDF : 45 Pages View PDF
TDA9115
6.8 DC/DC CONTROLLER SECTION
VCC = 12V, Tamb = 25°C
Symbol
Parameter
Test Condit ions
RB+FB
AOLG
fUGBW
IRI
IBComp
ABISense
VThrBIsCurr
IBISense
IBOut
VBOSat
VBReg
tBTrigDel / TH
Ext. resistance applied between
BComp output and BRegIn input
Open loop gain of error amplifier
on BRegIn input
Low frequency(18)
Unity gain bandwidth of error am- (18)
plifier on BRegIn input
Bias current delivered by regula-
tion input BRegIn
Output current capability of BComp
output.
HBOutEn = ”Enable”
HBOutEn = ”Disable” (32)
Voltage gain on BISense input
Threshold voltage on BISense input
corresponding to current limitation
Input current sourced by BISense input
Output current capability of BOut
output
Saturation voltage of the internal output
transistor on BOut
IBOut=10mA
Regulation reference for BRegIn
voltage(33)
VRefO=8V
Delay of BOut “Off-to-On” edge after
middle
(34)
of
flyback
pulse,
as
part
of
TH
BOutPh = ”0”
Min.
5
-0.5
1.98
0
4.7
Value
Typ. Max.
100
6
-0.2
2.0
0.5
3
2.1 2.22
-1
10
0.25 0.35
4.8 5.0
16
Units
kΩ
dB
MHz
µA
mA
mA
V
µA
mA
V
V
%
Note 32: A current sink is provided by the BComp output while BOut is disabled:
Note 33: Internal reference related to VRefO. The same values to be found on pin BRegIn, while regulation loop is
stabilized.
Note 34: Only applies to configuration specified in ”Test conditions” column, i.e. synchronization of BOut “Off-to-On”
edge with horizontal flyback signal. Refer to chapter ”DC/DC controller” for more details.
15/45
Share Link: 
