TSM121

10/12

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