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TSM121 Datasheet(PDF) 10 Page - STMicroelectronics

Part # TSM121
Description  SINGLE CHIP PWM & HOUSEKEEPING IC FOR HALF BRIDGE SMPS
PDF  12 Pages
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Manufacturer  STMICROELECTRONICS [STMicroelectronics]
Direct Link  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics

TSM121 Datasheet(HTML) 10 Page - STMicroelectronics

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TSM121
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When the Error Amplifier output (FB) is low, the
C1 / C2 outputs duty cycle is high.
When the Error Amplifier output (FB) is high, the
C1 / C2 outputs duty cycle is low.
When the Soft Start input (SS/DTC) is low, the C1
/ C2 outputs duty cycle is high.
When the Soft Start input (SS/DTC) is high, the C1
/ C2 outputs duty cycle is low.
Figure 4 :
OSCILLATOR
CK
D
Q
!Q
C1
C2
PWM GENERATOR
FAULT
FB
OSC
SS
PWM
SSDTC
CK
A
B
OSC
SS
FB
PWM
SSDTC
CK
Q
!Q
A
B
C1
C2
OSC
SS
FB
C1
C2



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