PAH300
･
350S24
-SERIES
TDK-Lambda
12
■
Installation
1. Mounting Method
By the following instruction shown in Fig.1-1 and Fig.1-2,
mount power module onto printed circuit board.
Fig.1-1 Mounting method
for standard model and /P option model
Fig.1-2 Mounting method
for /T option model and /PT option model
(1) Method to Fix
(1-1) Standard model and /P option model
To fix a power module onto printed circuit board, use
M3 screws and mount it to the M3 threaded holes
(4 places) of the power module. Recommended torque is
0.54N∙m.
(1-2) /T option model and /PT option model
To fix a power module onto printed circuit board, use
M3 screws and mount it to the M3 threaded holes of the
heatsink (4 places) through the
φ
3.4 non-threaded holes
(4 places) of the power module. Recommended torque is
0.54N∙m
(2) Mounting Holes
Mounting holes of the power module are connected to
baseplate. Connect baseplate to FG (Frame Ground) by
using this mounting holes.
(3) Mounting Holes on Printed Circuit Board
Refer to the following sizes when determining diameter of
hole and land diameter of printed circuit board.
Input / Signal terminals (
φ
1.0 mm )
Hole diameter
:
φ
1.5 mm
Land diameter
:
φ
3.0 mm
Output terminals (
φ
2.0 mm )
Hole diameter
:
φ
2.5 mm
Land diameter
:
φ
4.5 mm
Mounting Holes (FG)
Hole diameter
:
φ
3.5 mm
Land diameter
:
φ
5.5 mm
For position of the holes, see outline drawing of the
power module.
(4) Recommended Material of PCB
Recommended materials of the printed circuit board is
double sided glass epoxy with through holes.
(thickness t:1.6mm , copper 35
μ
m).
(5) Input/ Output terminal pin
Connect +Vin, -Vin, +V, -V terminals such that
contact resistance is minimal. Note that if contact
resistance is high, efficiency will drop and power
module will be damaged by abnormal heat.
(6) Input / Output Pattern Width
Large current flows through input and output pattern.
If pattern width is too narrow, heat on pattern will
increase because of voltage drop of pattern.
Relationship between allowable current and pattern
width varies depending on materials of printed circuit
board, thickness of conductor. It is definitely necessary
to confirm on manufacturers of printed circuit board for
designing pattern.
M3 Threaded
Mounting Hole
Heatsink
Silicone grease
φ
3.4 Non-threaded
Mounting Hole
Power Module
Printed Circuit Board
Plain Washer
Spring Washer
M3 Screw
M3 Screw
Spring Washer
Plain Washer
Heatsink
Silicone grease
M3 Threaded
Mounting Hole
Power Module
Printed Circuit Board
Plain Washer
Spring Washer
M3 Screw
