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TSM121

Features: ·HOUSEKEEPING CIRCUIT :·Over voltage protection for 3.3V, 5V and 12V without external components·Additional Over voltage protection (-5V and/or -12V, or Primary Over Power control) with external components·Under voltage protection for 3.3V, 5V and 12V without external components·Over cur...

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SeekIC No. : 004529628 Detail

TSM121: Features: ·HOUSEKEEPING CIRCUIT :·Over voltage protection for 3.3V, 5V and 12V without external components·Additional Over voltage protection (-5V and/or -12V, or Primary Over Power control) with ex...

TSM121 Data Sheet

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Part Number:
TSM121
Supply Ability:
5000

Price Break

  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

·HOUSEKEEPING CIRCUIT :
·Over voltage protection for 3.3V, 5V and 12V without external components
·Additional Over voltage protection (-5V and/or -12V, or Primary Over Power control) with external components
·Under voltage protection for 3.3V, 5V and 12V without external components
·Over current protection for 3.3V, 5V and 12V with internal threshold voltage
·Externally adjustable Inrush Current blanking during transients
·Externally adjustable Under voltage blanking during Power Up
·Power Good output
·Externally adjustable PG delay
·Remote input
·Externally adjustable Remote delay
·Internal Precision Voltage Reference (Vref1)
·PWM GENERATOR :
·Error Amplifier (easy compensation)
·Oscillator (adjustable frequency)
·PWM generation
·Soft Start & Dead Time Control (adjustable)
·Open collector outputs for indirect Pulse Transformer driving
·Precision Voltage Reference (Vref2) (Uncommitted with Vref1)


Application

Primary PWM and secondary housekeeping in PC/Server SMPS using Half Bridge topology


Pinout

Connection Diagram


Specifications

Symbol DC Supply Voltage Value Unit

Vcc

DC Supply voltage pin 2 1)

25

V

Iout

Output current Power Good and Fault

30

mA

Co

 Collector Output Current

50

mA
Top
 Operating Free Air Temperature Range
-55 to 125
°C
Pd
Power dissipation
1
W
Tstg
Storage temperature
-55 to 125
°C
Tuv
 Adjustable Under voltage blanking delay at Power Up
5
V
EP
 Extra Protection
5
V
PI
Power Good input
5
V
PG
 Power Good output
5
V
Tpg
Adjustable Power Good delay
5
V
REM
 Remote control
5
V
Trem
Adjustable Remote delay
5
V
Tsur
Adjustable Inrush Current Blank (surge)
5
V
IN+
Positive Input of the error amplifier
5
V
IN-
Negative Input of the error amplifier
5
V
FB
Feedback input of the error amplifier
5
V
OSC
Frequency setting capacitor input
5
V

1. All voltages values , except differential voltage , are with respect to network ground terminal .


Description

The TSM121 integrated circuit incorporates all sensing circuit to regulate and protect from over voltage, under voltage and over current a multiple output power supply (12V, 5V, 3.3V). TSM121 incorporates all the necessary functions for proper PWM generation and pulse transformer drive to be adapted easily in the PC SMPS power supplies, and all the Housekeeping features which allow safe operation in all conditions, and very high integration. TSM121 integrates two independent Voltage References which are uncommitted to ensure safe Regulation and Protection by the same chip.




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