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參數(shù)資料
| 型號： | IR3092 |
| 廠商： | International Rectifier |
| 英文描述： | 2 PHASE OPTERON, ATHLON, OR VR10.X CONTROL IC |
| 中文描述： | 2相皓龍，速龍，或控制IC的VR10.X |
| 文件頁數(shù)： | 18/37頁 |
| 文件大?。?/td> | 619K |
| 代理商： | IR3092 |
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IR3092
Page 18 of 37
06/25/04
Table 2. Intel VR10.X VID (VID_SEL Grounded, measured at EAOUT=FB. )
Processor Pins (0 = low, 1 = high)
VID4
VID3
VID2
0
1
0
0
1
0
0
1
0
0
1
0
0
1
0
0
0
1
0
0
1
0
0
1
0
0
1
0
0
1
0
0
1
0
0
1
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
0
1
1
0
1
1
0
Note: 4. Output disabled (Fault mode)
Oscillator Resistor R
ROSC
The oscillator frequency is programmable from 100kHz to 540kHZ with an external resistor R
ROSC
as shown in Figure 6.
The oscillator generates an internal 50% duty cycle saw tooth signal (Figure 4
.) that is used to generate 180°out-of-phase
timing pulses to set Phase 1 and 2 RS flip-flops. Once the switching frequency is chosen, R
ROSC
can be determined from
the curve in the I(SETBIAS) vs. Rosc curve in the Typical Operating Characteristics Section.
Soft Start, Over-Current Fault Delay, and Hiccup Mode
The IR3092 has a programmable soft-start function to limit the surge current during converter power-up. A capacitor
connected between the SS/DEL and LGND pins controls soft start timing as well as over-current protection delay and
hiccup mode timing.
Figure 8 depicts the various operating modes of the SS/DEL function. Under a no fault condition, the SS/DEL capacitor
will charge. The SS/DEL charge soft-start duration is controlled by a 55uA charge current which charges CSS up to 4.0V.
The Error Amplifier output is clamped low until SS/DEL reaches 1.3V. The Error Amplifier will then regulate the
converter’s output voltage to match the SS/DEL voltage less the 1.3V offset until it reaches the level determined by the
VID inputs. The PWRGD signal is asserted once the SS/DEL voltage exceeds 3.75V.
Processor Pins (0 = low, 1 = high)
VID4
VID3
VID2
1
1
0
1
1
0
1
1
0
1
1
0
1
1
0
1
0
1
1
0
1
1
0
1
1
0
1
1
0
1
1
0
1
1
0
1
1
0
1
1
0
0
1
0
0
1
0
0
1
0
0
1
0
0
1
0
0
1
0
0
1
0
0
0
1
1
0
1
1
0
1
1
0
1
1
0
1
1
0
1
1
0
1
1
0
1
1
0
1
0
0
1
0
0
1
0
VID1
VID0
VID5
Vout
(V)
0.8375
0.8500
0.8625
0.8750
0.8875
0.9000
0.9125
0.9250
0.9375
0.9500
0.9625
0.9750
0.9875
1.0000
1.0125
1.0250
1.0375
1.0500
1.0625
1.0750
1.0875
OFF
OFF
4
1.1000
1.1125
1.1250
1.1375
1.1500
1.1625
1.1750
1.1875
1.2000
VID1
VID0
VID5
Vout
(V)
1.2125
1.2250
1.2375
1.2500
1.2625
1.2750
1.2875
1.3000
1.3125
1.3250
1.3375
1.3500
1.3625
1.3750
1.3875
1.4000
1.4125
1.4250
1.4375
1.4500
1.4625
1.4750
1.4875
1.5000
1.5125
1.5250
1.5375
1.5500
1.5625
1.5750
1.5875
1.6000
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
1
0
0
0
0
1
1
1
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
1
0
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
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