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參數(shù)資料
| 型號： | P62000NLG8 |
| 廠商： | INTEGRATED DEVICE TECHNOLOGY INC |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | DUAL SWITCHING CONTROLLER, QCC64 |
| 封裝： | ROHS COMPLIANT, QFN-64 |
| 文件頁數(shù)： | 21/62頁 |
| 文件大?。?/td> | 1221K |
| 代理商： | P62000NLG8 |
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IDTP62000
2/3/4-PHASE PWM CONTROLLER WITH DYNAMIC VOLTAGE & FREQUENCY SCALING
IDT 2/3/4-PHASE PWM CONTROLLER WITH DYNAMIC VOLTAGE & FREQUENCY SCALING
28
IDTP62000
REV E 050510
CONFIDENTIAL
AMD PVI/SVI Mode Soft Start
In AMD PVI/SVI mode, the reference voltage ramps directly to the value determined by the active VID code at a rate of 6.25
mV every 3.03 s or 330 kHz.
Figure 23: AMD PVI/SVI Soft-Start Waveforms
The timings for T1, T2 and T3 are shown below:
Pre-Biased Soft Start
In order to prevent reverse inductor current when starting up into pre-charged output capacitors the IDTP62000 will not
activate its low side gate drivers until the voltage on the FB pin exceeds the Error Amplifier's reference voltage.
Fault Monitoring Protection
Power Good Signal (VR_READY)
The PGOOD pin is an open drain output that should be pulled up to the system appropriate voltage with an external resistor.
PGOOD indicates to the rest of the system that the voltage regulator has completed its startup cycle and that all operating
parameters are within normal conditions. PGOOD is then used to transmit to the rest of the system the condition of the PWM
and especially when a fault condition exists.
During shutdown and soft-start the PGOOD signal is low and will go high after the soft-start sequence completes and the
output voltage is between the over-voltage and under-voltage limits (approximately 1 ms after the end of soft-start). During
an under-voltage, over-voltage, over-current condition or when the controller output enable UVLO_PVCC is pulled low,
PGOOD will drive low. PGOOD will also be pulled low when a no-CPU VID (or OFF) code is selected or during any reset
event. During an over-voltage or over-current event, PGOOD will be latched low and will not go high until after a successful
soft-start. In the case of an under-voltage condition, PGOOD will transition high when the output voltage returns to above
the under-voltage threshold.
VCORE
POR
PGOOD
T2
T3
T1 (ms)
T2 (ms)
T3 (ms)
1.0
25
.
6
3030
×
VID
1.0
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