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OPERATING INSTRUCTIONS 

 

 

Page 4 

www.schroff.biz

 

 

General Conditions:  

 

• 

T

A

 = 25 °C, unless 

T

c

 is specified.  

• 

 CPA500: 300 LFM (1.5 m/s)  

• 

 Sense lines connected directly at the connector  

 

Output data  of CPA500 
 

Output 

 

Vo1 (5.0 V) 

 

Vo2 (3.3 V) 

 

Unit 

 

Characteristics 

 

Conditions 

 

min 

 

typ

 

max

 

min 

 

typ

 

max

 

 

V

o  

Output voltage  

V

i nom

, 50%

 I

o nom  

4.95  

5.0 

5.05 

3.267  

3.3 

3.333 

V

DC

  

I

nom  

Nominal output current  

 

 

40

 

 

 50   

I

max  

Max. output current  

V

i min 

 V

i max 

  

50 

 

 

60 

 

I

oL  

Output current limit  

T

C min 

– 

T

C max  

52,2  

62 

63 

 

74 

I

min  

Minimum load  

 

no min. load required  

no min. load required  

A  

v

o  

Switch. 
frequ.  

V

i nom

I

o nom 

BW = 20 MHz

  

 20     15   

 

Output  
voltage 
noise  

Total  

C

ext

 = 22 µF + 100 nF  

 20     15   

mV

pp  

V

o

V  

Static line regulation  

V

i min 

 V

i max

I

o nom  

  ±10    ±10 

V

o

L  

Static load regulation  

V

i nom

, 50 – 100% 

I

o max  

  ±10    ±10 

V

o

S  

Overshoot at switch 
on/off  

 

 0  

 0   

mV  

v

o d  

Dynamic 
load  

Voltage 
deviation  

Vo1: 

I

o1

 = 10 A, d

I

o1

/dt = 2 A/µs 

Vo2: 

I

o2

 = 10 A, d

I

o2

/dt = 2 A/µs  

  

± 

150 

 

 

± 150

 

mV

 

t

d  

regulation  

Recovery 
time  

 

 300     300    µs 

 

α

V

o  

Temperature coefficient 
of output voltage  

T

C min 

 T

C max 

0 –

 I

o nom

V

i min 

 V

max  

 

±0.3  

 

±0.2  

 

 

mV/K 

 

Output 

 

Vo3 (+12 V) 

 

Vo4 (–12 V) 

 

Unit 

 

Characteristics 

 

Conditions 

 

min 

 

typ 

 

max 

 

min 

 

typ 

 

max 

 

 

V

o  

Output voltage  

V

i nom

, 50%

 I

o nom  

11.88 

12.0  

12.12 

–11.52 

–12.0   –12.48 

V

DC

 

I

o nom  

Nominal output current  

 

 

8

 

 

 

3

 

 

I

o max  

Max. output current  

V

i min 

 V

i max 

 

12  

 

 

4  

 

I

oL  

Output current limit  

T

C min 

– 

T

C max  

 

13,5 

  

 4,3 

 

I

o min  

Minimum load  

 

I

o3

 > 75% 

I

o4

1

 

 

v

o  

Switch. 
frequ.  

V

i nom

I

o nom  

BW = 20 MHz

 

 

 

mV

pp  

 

Output  
voltage  
noise 

Total  

C

ext

 = 22 µF + 100 nF  

 

15 

 

 

10 

 

 

V

oV  

Static line regulation  

V

i min 

 V

i max

I

o nom  

 

±10  

 

±10  

mV  

V

oL  

Static load regulation  

V

i nom

I

= 1 – 2 A  

 

±50  

– 220 

2

 

 

 

 

V

oS  

Overshoot at switch 
on/off  

 

 

 

 

Vo3: 

I

o3

 = 2 A, d

I

o3

/dt = 2 A/µs  

 

± 200 

 

± 150  

 

v

o d  

Voltage  
deviation  

Vo4: 

I

o4

 = 0.5 A, d

I

o4

/dt = 2 

A/µs  

 

 

 

 

 

t

d  

Dynamic  
load  
regulation   Recovery 

time  

 

300 

 

300 

 

µs  

α

V

o  

Temperature 
coefficient  
of output voltage  

T

C min 

 T

C max  

0 –

 I

o nom

,

 V

i min 

 V

i max  

±0.3  

±0.5  

mV/K 

1

 Minimum load is only required to maintain regulation of Vo4 

2

 Droop characteristic for passive current sharing

 

 
 

Содержание maxpowerPRO CPA Series

Страница 1: ...ries are highly reliable power supplies for CompactPCI systems which are increasingly used in communications industrial military aerospace and other applications These power supplies offer high power...

Страница 2: ...uption of Vi without affecting the outputs Input Transient Protection A metal oxide VDR Voltage Dependent Resistor together with the input fuse form an effective protection against high input voltage...

Страница 3: ...A dIo1 dt 2 A s Vo2 Io2 10 A dIo2 dt 2 A s 120 120 mV td regulatio n Recovery time 100 100 s Vo Temperature coefficient of output voltage TC min TC max 0 Io nom Vi min Vi max 0 3 0 2 mV K Output Vo3...

Страница 4: ...10 A dIo2 dt 2 A s 150 150 mV td regulation Recovery time 300 300 s Vo Temperature coefficient of output voltage TC min TC max 0 Io nom Vi min Vi max 0 3 0 2 mV K Output Vo3 12 V Vo4 12 V Unit Charact...

Страница 5: ...rature TA max see Temperatures the temperature measured at the measurement point of the case temperature TC see Mechanical Data will approach after an initial warm up phase the indicated maximum value...

Страница 6: ...f logic signals or to enable the source to start up before full load is applied Note If this function is not used the inhibit pin 39 can be left open circuit not connected If pin 39 is connected to a...

Страница 7: ...A250 up to Version V115 is not monitored Vi min of CPA models is considered as insufficient when vi remains for typ 30 ms below 2 Vi min Connector pin 42 signal VFAL is internally connected via the dr...

Страница 8: ...g terminals causes the converters to share the output current evenly In n 1 redundant systems a failure of a single converter will not lead to a system failure since the outputs are already decoupled...

Страница 9: ...following specifications Electromagnetic Immunity Immunity type tests Electromagnetic Emission Radiated and conducted emissions comply with EN 55011 55022 class A In addition CPA500 550 meet conducted...

Страница 10: ...ations valid for an air pressure of 800 1200 hPa 800 1200 mbar Reliability MTBF Ratings at specified case temperature Model Ground benign 40 C Ground fixed 40 C 70 C Ground mobile 50 C Unit MTBF acc t...

Страница 11: ...nected 33 M V2SENSE V2 Remote Sense 34 M S RTN Sense Return 35 M V1SHARE V1 Current Share 36 M V3SENSE V3 Remote Sense 37 M Reserved 3 38 M DEG Degrade Signal 39 M INH Inhibit 40 M Reserved 3 41 M V2S...

Страница 12: ...vides a means of mechanical electrical and fire protection To maintain SELV requirements the outputs should not be connected together in any manner which causes the total output voltage to exceed 60 V...

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