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DESCRIPTION
The TSM111 integrated circuit incorporates all
sensing circuit to control a triple output power sup-
ply. It includes voltage references , comparatorsand
matched resistors bridge for overcurrent and over-
voltage detection without the need of any external
components.Timing generatorwith externalcapaci-
tors, control turn On and Off delays. It provides an
integrated and cost effective solution for simultane-
ous multiple voltage control.
APPLICATIONS
This circuit is designedto be used in SMPS forDesk-
top PC, to supervise currents and voltages of all out-
puts and generate power good information to the
system while managing all timing during transitory
operation.
The IC also manages the standby mode of SMPS
while the PC is in sleep mode.
May 1999
PIN CONNECTIONS
(top view)
Vs33
Vs5
Vs12
ADJ
Vcc
P WM
REM
Tre m
PG
Tpor
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
Is33
Is5
Is12
Ts ur
GND
FbMAIN
VrefMAIN
VrefAUX
FbAUX
UV
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