You Do Need power plug adapter while traveling from Burundi to Philippines.

Here is Why You Need An Adapter

The outlet and plug type used in Philippines are A, B and C and in Burundi are C and E. This is how they look like.

Burundi

In Burundi, outlets of type C and E are in use.

Type C

Type E

Philippines

In Philippines, outlets of type A, B and C are in use.

Type A

Type B

Type C