TSM111 데이터 시트보기 (PDF) - STMicroelectronics
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TSM111 Datasheet PDF : 17 Pages
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TSM111
PIN DESCRIPTION
Name
Pin
Type
Function
Vcc
Vrefmain
Fbmain
Vrefaux
Fbaux
IS33
V33
IS5
V5
IS12
V12
Adj
Tsur
Rem
Trem
PWM
Tpor
UV
PG
GND
Positive supply voltage. The DC supply voltage must be higher than the maxi-
5
supply
mum voltage applied on the 3.3, 5, 12V inputs (Is3.3, Is5, Is12) plus 2V.
For example, if 13.2V is present on the Is12 input, the minimum required
value on VCC is 15.2V
14
analog input
Reference comparison input for main converter regulation loop.
2.5V ±1.6%
15 analog output Output for main converter regulation loop (optocoupler)
13
analog input
Reference comparison input for auxiliary converter regulation loop.
2.5V ±1.6%
12 analog output Output for auxiliary converter regulation loop (optocoupler)
20
analog input 3.3V overcurrent control sense input.
1
analog input 3.3V overvoltage control sense input.
19
analog input 5V overcurrent control sense input.
2
analog input 5V overvoltage control sense input.
18
analog input 12V overcurrent control sense input.
3
analog input 12V overvoltage control sense input.
Adjustment pin for 3.3V OVP. This pin is to be used for an OVP other than
4
ana input 3.3V (eg for µC power supply = 2.7V). When not in use, this pin should be
grounded. When in use, VS33 should not be connected.
17
program. Overcurrent blank-out time 20 to 30ms settable through external RC.
analog input The voltage at this pin is clamped at typically 5V. Trip voltage = 1.25V.
7
logic input
Remote On/Off logic input for µC, turn off PWM after Trem delay.
Rem = 0 means that the main SMPS is operational.
8
program.
analog input
Connected to external capacitor to determine Trem (remote control delay) tim-
ing. Trem (on to off) is 8ms typ. Trem (off to on) is 24ms typ.
Crem = 0.1µF
6
logic output
Output signal to control the primary side of the main SMPS through an
opto-coupler. When PWM is low, the main SMPS is operational.
10
program. Connected to external capacitor for Power-on-reset timing.
analog input Cpor = 2.2µF
11
analog input Undervoltage detection, control and detect main AC voltage failure.
9
logic input
Power Good logic output, 0 or 5V. Power Good high (=1) means that the
power is good for operation.
16
supply
Ground or Negative supply voltage.
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