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General Purpose Power Supply (GPDPS) 6 Device PowerSupply

System Reference, January 2001

147

The following table helps you to find the appropriate

performance range and capacitive load:

Table 28 GPDPS Performance Ranges and Characteristics

(Voltage ripple ≤ 200 mV)

For each performance range, the minimum essential

capacitive load (Min. C

Load

) that is always required is

shown together with two pairs of current swing values and

their respective capacitive loads, dimensioned so that the

supply voltage ripple will be less than 200mV for the

respective current swing. These reference values help you

find the appropriate load capacitances for the particular

performance range and current swing of the DUT to keep

the voltage ripple below 200mV.

Note that the current swings shown are maximum values

within which the power supply ripple will not exceed

200mV. They do not, however, represent the only current

swings permissible for the particular range. If, for

example, your expected current swing is 150mA, although

this could be handled by the performance range 1, you

should preferably use the performance range 2 with 4µF to

produce the lowest voltage ripple (in this case well below

200mV).

On this basis, performance range 1 is typically used for

current swings up to 100mA (although current swings of

up to 3A could be regulated with this performance range),

performance range 2 typically for current swings in the

Range Min. Cload CDV<200mV Current swing CDV<200mV Current swing

1 100nF 100nF 60mA <4µF100 mA

24µF4µF300mA<20µF400 mA

320µF20µF 1.0A <100 µF 1.5 A

4100µF100µF3A 3000µF8A

Range 1 max. current: 3 A DC, all other ranges 8 A DC

1 2 ... 142 143 144 145 146 147 148 149 150 151 152 ... 284 285

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AWG G3 PAD FOR PS3 Spezifikationen Seite 147