Integrated circuit packaging system with pad and method of manufacture thereof

1. A method of manufacture of an integrated circuit packaging system comprising:

forming a peripheral lead having a peripheral lead bottom side, a peripheral lead top side, a peripheral lead non-horizontal side, and a peripheral lead horizontal ridge protruding from the peripheral lead non-horizontal side;

forming a first top distribution layer on the peripheral lead top side;

connecting an integrated circuit to the first top distribution layer; and

applying an insulation layer directly on a distribution layer bottom extent of the first top distribution layer and a peripheral lead ridge lower side of the peripheral lead horizontal ridge with a cavity in the portion of the insulation layer directly below the integrated circuit.

2. The method as claimed in claim 1 further comprising:

forming a package paddle between the peripheral lead and another of the peripheral lead; and

wherein:

applying the insulation layer includes exposing the package paddle in the cavity.

3. The method as claimed in claim 1 further comprising forming a conductive cap directly on the peripheral lead top side.

4. The method as claimed in claim 1 wherein forming the peripheral lead includes forming a peripheral lead step portion protruding from the peripheral lead top side.

5. The method as claimed in claim 1 further comprising forming a central lead directly under the integrated circuit.

6. A method of manufacture of an integrated circuit packaging system comprising:

forming a peripheral lead having a peripheral lead bottom side, a peripheral lead top side, a peripheral lead conductive plate at the peripheral lead bottom side, and a peripheral lead non-horizontal side with a peripheral lead horizontal ridge protruding from the peripheral lead non-horizontal side;

forming a first top distribution layer on the peripheral lead top side;

connecting an integrated circuit to the first top distribution layer;

forming an encapsulation over the integrated circuit and the first top distribution layer; and

applying an insulation layer directly on a distribution layer bottom extent of the first top distribution layer and a peripheral lead ridge lower side of the peripheral lead horizontal ridge with a cavity in the portion of the insulation layer directly below the integrated circuit.

7. The method as claimed in claim 6 wherein forming the peripheral lead includes forming the peripheral lead having the peripheral lead conductive plate with a recess at the peripheral lead bottom side.

8. The method as claimed in claim 6 further comprising:

forming a conductive cap directly on the peripheral lead top side; and

wherein:

forming the first top distribution layer includes forming the first top distribution layer directly on the conductive cap and having a distribution layer conductive material.

9. The method as claimed in claim 6 wherein:

forming the peripheral lead includes forming a peripheral lead step portion protruding from the peripheral lead top side; and

wherein:

forming the first top distribution layer includes forming the first top distribution layer having a peripheral distribution step portion directly on the peripheral lead step portion.

10. The method as claimed in claim 6 further comprising forming a central lead directly under the integrated circuit and adjacent the peripheral lead.

11. An integrated circuit packaging system comprising:

a peripheral lead having a peripheral lead bottom side, a peripheral lead top side, a peripheral lead non-horizontal side, and a peripheral lead horizontal ridge protruding from the peripheral lead non-horizontal side;

a first top distribution layer on the peripheral lead top side;

an integrated circuit connected to the first top distribution layer; and

an insulation layer directly on a distribution layer bottom extent of the first top distribution layer and a peripheral lead ridge lower side of the peripheral lead horizontal ridge with a cavity in the portion of the insulation layer directly below the integrated circuit.

12. The system as claimed in claim 11 further comprising a package paddle between the peripheral lead and another of the peripheral lead with the package paddle exposed in the cavity.

13. The system as claimed in claim 11 further comprising a conductive cap directly on the peripheral lead top side.

14. The system as claimed in claim 11 wherein the peripheral lead includes a peripheral lead step portion protruding from the peripheral lead top side.

15. The system as claimed in claim 11 further comprising a central lead directly under the integrated circuit.

16. The system as claimed in claim 11 further comprising the peripheral lead having a recess at the peripheral lead bottom side.

17. The system as claimed in claim 16 wherein the peripheral lead includes the peripheral lead conductive plate with a recess at the peripheral lead bottom side and with a lead plate conductive material.

18. The system as claimed in claim 16 further comprising:

a conductive cap directly on the peripheral lead top side; and

wherein:

the first top distribution layer is directly on the conductive cap and has a distribution layer conductive material.

19. The system as claimed in claim 16 wherein:

the peripheral lead includes a peripheral lead step portion protruding from the peripheral lead top side; and

wherein:

the first top distribution layer includes a peripheral distribution step portion directly on the peripheral lead step portion.

20. The system as claimed in claim 16 further comprising a central lead directly under the integrated circuit and adjacent the peripheral lead.