APPLICATION NOTE

AN50

 

 

VID

Iload (A)

Vout (V)

11010

0.5

2.505

 

 

 

 

1.0

2.504

 

 

 

 

2.0

2.501

 

 

 

 

3.0

2.496

 

 

 

 

4.0

2.493

 

 

 

 

5.0

2.493

 

 

 

 

6.0

2.492

 

 

 

 

7.0

2.492

 

 

 

 

8.0

2.491

 

 

 

 

9.0

2.490

 

 

 

 

10.0

2.989

 

 

 

 

11.0

2.488

 

 

 

 

12.0

2.486

 

 

 

 

13.0

2.485

 

 

 

 

13.9

2.484

 

 

 

Load Regulation 0.5A – 13.9A

0.84%

 

 

 

Note:

Load regulation is expected to be typically around 0.8%. The load regulation performance for this device under evaluation is excellent.

Output Voltage Load Transients Due to Load Current Step

This test is performed using Intel P6.0/P6S/P6T Voltage Transient Tester.

Low to High

0.5A-9.9A

-76.0mV

Refer to

Current Step

 

 

Attachment

 

 

 

A for Scope

 

 

 

Picture

 

 

 

 

High to Low

9.9A-0.5A

+70mV

Refer to

Current Step

 

 

Attachment

 

 

 

B for Scope

 

 

 

Picture

 

 

 

 

Low to High

0.5A-12.4A

-97.6mV

Refer to

Current Step

 

 

Attachment

 

 

 

C for Scope

 

 

 

Picture

 

 

 

 

High to Low

12.4A-0.5A

+80.0mV

Refer to

Current Step

 

 

Attachment

 

 

 

D for Scope

 

 

 

Picture

 

 

 

 

Low to High

0.5A-13.9A

-99.2mV

Refer to

Current Step

 

 

Attachment

 

 

 

E for Scope

 

 

 

Picture

 

 

 

 

High to Low

13.9A-0.5A

+105.2mV

Refer to

Current Step

 

 

Attachment

 

 

 

F for Scope

 

 

 

Picture

 

 

 

 

Note:

Transient voltage is recommended to be less than 4% of the output voltage. The performance of the device under evalua- tion is significantly better than a typical VRM.

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Fairchild RC5051, RC5050 11010 505 504 501 496 493 492 491 490, 989, 488, 486, 485, 484, Load Regulation 0.5A 13.9A