TSM111 STMicroelectronics, TSM111 Datasheet - Page 5

• Manufacturer Part Number: TSM111
• Description: 3.3, 5, 12V triple over voltage and over current protection
• Manufacturer: STMicroelectronics

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