參數(shù)資料
型號： pentium pro processor
廠商： Intel Corp.
英文描述： Pentium Pro Processor with 1MB L2 Cache at 200MHZ(1兆比特L2高速緩存頻率200兆赫茲處理器)
中文描述： 奔騰Pro處理器在200MHz（1兆比特二級高速緩存頻率200兆赫茲處理器帶有1MB的L2緩存）
文件頁數(shù)： 32/39頁
文件大小： 930K
代理商： PENTIUM PRO PROCESSOR
AP-523
E
32
DC Voltage Regulation
REQUIRED
Voltage regulation limits must include:
·
Output load ranges specified in Table 8
.
·
Output ripple/noise.
·
DC Output initial voltage set point adjust
·
Temperature and warm up drift specified
in Table 11.
·
Output load transient (slew rate) as defined
in Table 6.
The toggle rate for the output load ranges specified in
this section must range from 100 Hz to 100 kHz. Under
the above conditions and for all toggle rates, voltage
levels must be ±5% of nominal setting, as measured over
a 20 MHz frequency band.
Output Ripple and Noise
GUIDELINE
Ripple and noise are defined as periodic or random
signals over the frequency band of 20 MHz at the output
pins. Output ripple and noise requirements of
±
1.0%
must be met throughout the full load range and under all
specified input voltage conditions.
Variation with Load
GUIDELINE
To assist in providing margin during high slew rate
current load transitions, the vendor may target module
performance so as to provide for a nominal +2% offset
when under minimum load conditions, and a nominal
-2% offset when under maximum load conditions.
Overshoot At Turn-On/Turn-Off
GUIDELINE
Overshoot upon the application or removal of the input
voltage under the conditions specified in this section
must be less than 10% above the initial set output
voltage. No voltage of opposite polarity must be present
on any output during turn-on or turn-off.
Turn-on Response Time
GUIDELINE
The output voltage must reach 99% of nominal level
within 10 ms of the input reaching 90% of nominal level.
Efficiency
GUIDELINE
The efficiency of the DC-to-DC converter must be
greater than 80% at high current draw and greater than
40% at low current draw.
10.1.4.
PROTECTION
These are features built in to the DC-to-DC converter to
prevent damage to itself or the circuits it powers.
Over-Voltage Protection (OVP)
GUIDELINE
Protection level: The converter must provide over-
voltage protection by shutting itself off when the output
voltage rises beyond V
TRIP
. V
TRIP
must be set between
10% and 20% above the selected output voltage level.
Short Circuit Protection
GUIDELINE
A load short circuit is defined as a load impedance of less
than approximately 200 m
W
. The DC-to-DC converter
must operate in a constant current mode for a shorted
output. The DC-to-DC converter must be capable of
withstanding a continuous short-circuit to the output
without damage or over-stress to the unit.
Reset After Shutdown
GUIDELINE
If the DC-to-DC converter goes into a shutdown state
due to a fault condition on its outputs, the DC-to-DC
converter must return to normal operation after the fault
has been removed, or after the fault has been removed
and power has been cycled off and on.
Voltage Sequencing
REQUIRED
No combination of input voltages may falsely trigger an
OVP event.
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