Fixing device for double sided heat sink and associated heat dissipating system

A heat dissipating system, comprising:

• a double-sided heat sink (200);
• a carrier (300), on which a chip (400) is arranged;
• and
• a fixing device (100) to mount the double-sided heat sink (200) on the carrier (300),
• wherein the fixing device (100) comprises:
• a first holder (110) comprising a first cylindrically-shaped rod (111), wherein the first cylindrically-shaped rod (111) can pass through a first cooling portion (210) of the double-sided heat sink (200) and a mounting hole of the carrier (300) to fix the first cooling portion (210) to a first side (310) of the carrier (300), and the first cylindrically-shaped rod (111) comprises a through-hole (112) extending along a longitudinal direction (z);
• and
• a second holder (120) comprising a second cylindrically-shaped rod (121), wherein the second cylindrically-shaped rod (121) can pass through a mounting hole of a second cooling portion (220) of the double-sided heat sink (200) and the through-hole (112) of the first holder (110), such that the second holder (120) is coupled with the first holder (110) to fix the second cooling portion (220) to a second side (320) of the carrier (300) opposite to the first side (310).
• wherein the double-sided heat sink (200) comprises:
• a first cooling portion (210), arranged at a first side (310) of the carrier (300) and connectable to the chip (400);
• a second cooling portion (220), arranged at a second side (320) of the carrier (300) opposite to the first side (310);
• and
• a heat pipe (230), through which the first cooling portion (210) and the second cooling portion (220) are connected to perform heat transfer.