CM6901GIP CHAMP [Champion Microelectronic Corp.], CM6901GIP Datasheet - Page 10

• Manufacturer Part Number: CM6901GIP
• Description: SLS (SRC/LLC+SR) Controller with 1 FM+2 PWMs
• Manufacturer: CHAMP [Champion Microelectronic Corp.]

CM6901
SLS (SRC/LLC+SR) Controller with 1 FM+2 PWMs
V re f
R T
V F B
+
V T o I
O S C
2 .5 V
-
C T
R S E T
2 PWMings:
SR Ideal Diode PWMing (Synchronous Outputs)
SR Ideal Diode PWMing for synchronous drivers is accomplished by comparing the voltage signal at the RSET pin
to RTCT ramp. The pulse-width reduction happens when the voltage at the RSET is lower than 1.5V. This allows
safe operation of the power converter with synchronous rectification when the switching frequency is below the
highest resonant point frequency fr1.
V out
V ref
3V
R f1
R T
V FB
1.25V
+
FEA O
+
V To I
O SC
To
Logic
R f3
2.5V
-
-
1.5V
C T
R S E T
R f4
D ecreasing Pulsew idth
w ith V (R S E T)<1.5V
S R D R V
P R ID R V
2009/11/02 Rev1.4
Champion Microelectronic Corporation
Page 10