ir3092 International Rectifier Corp., ir3092 Datasheet - Page 26

• Manufacturer Part Number: ir3092
• Description: 2 Phase Opteron, Athlon, Or Vr10.x Control Ic
• Manufacturer: International Rectifier Corp.

IR3092
V
O
F
(22)
M
V
*
V
I
RAMP
C
is optional and may be needed in some applications to reduce the jitter caused by the high frequency noise. A
CP1
ceramic capacitor between 10pF and 220pF is usually enough.
Set BIASOUT Voltage Resistor Rset
BIASOUT pin provides 150mA open-looped regulated voltage for GATE drive bias, and the voltage is set by SETBIAS
through an external resistor Rset connecting between SETBIAS pin and ground. Bias current I
is a function of
SETBIAS
ROSC. Rset is chosen by equation (23)
V
BIASOUT
R
(23)
SET
I
SETBIAS
Page 26 of 37
06/25/04