PAH300-450 Series
300-450W Half Brick Converters
Features
Standard Half Brick Footprint
18-36 or 36-76VDC Inputs
12V 29A - 48V 9.4A Nominal Outputs
Through Hole Mounting
Low 12.7mm Profile
High operating efficiencies (up to 92%)
Constant switching frequency
Baseplate cooling
Key Market Segments & Applications
Specifications
Model
Nominal Output Voltage
Input Voltage range
Input Current (max)
Output Voltage Adjustment
Ripple & Noise (max) (pk to pk)
Line Regulation (max)
Load Regulation (max)
Overload Protection
Overvoltage Protection
(3)
Remote Sense
Remote On / Off (See options)
Temperature (operating)
Temperature (storage)
Temperature Coefficient
Humidity (operating)
Humidity (storage)
Cooling
Isolation Voltage
Vibration
Amplitude
Shock
Safety Agency Approvals
Weight (Typ)
Size (WxHxD)
Warranty
VDC
VDC
A
VDC
mV
mV
mV
%
%
-
-
°C
°C
-
-
-
-
VDC
-
-
-
-
g
in(mm)
yrs
12V
PAH300S, 350S, 450S
(see model selector)
28V
48V
18-36 or 36-76
6.8-17.4A (model dependant)
7.2 - 13.2
16.8 - 33
28.8 - 57.6(5)
200
280(1)
480
24
56
96
24
56
96
105 - 140%, constant current with auto recovery
115-135%
125-140%(2)
125-145%(6)
Yes
Standard; Low = ON, Open = OFF /P option; Low = OFF, Open = ON
-40°C to +100°C baseplate, full power(4)
-40°C to +100°C
0.02%/°C
5-95% RH Non condensing
5-95% RH Non condensing
Conduction (See Installation Manual for heatsink selection)
1500VDC Input to output & baseplate, 500VDC Output to baseplate
Non Operating, 10-55Hz (sweep for 1 min.)
0.825mm constant (Max 49 m/s
2
) X,Y,Z 1 hour each
196.1m/s
2
UL60950-1, CSA60950-1, EN60950-1, CE LVD (48V input models only)
110
2.4x0.5x2.28 (61x12.7x57.9) See outline drawing
2 Years
Note: See Installation Manual for full details, test methods of parameters and application notes
(1) 240mV for PAH300
(2) 125-145% for PAH450S48-28
(3) Manual reset
(4) PAH350S24-28 & -48: derate linearly to 85% load from 90°C to 100°C
(5) 28.8-52.8 PAH350S28-48
(6) 115-140% PAH350S28-48
1-800-526-2324 • www.us.tdk-lambda.com/lp/
179
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PAH300-450 Series
Model Selector
Model
PAH300S24-12
PAH300S48-12
PAH350S48-12
PAH300S24-28
PAH350S24-28
PAH350S24-48
PAH300S48-28
PAH350S48-28
PAH450S48-28
PAH450S48-48
Input
Voltage (V)
18 - 36
36 - 76
36 - 76
18 - 36
18 - 36
18 - 36
36 - 76
36 - 76
36 - 76
36 - 76
Output
Voltage (V)
12
12
12
28
28
48
28
28
28
48
Max.
Curr. (A)
25
25
29.2
11
12.5
7.3
11
12.5
16
9.4
Max. Output
Power (W)
300
300
350
308
350
350
308
350
448
451
Efficiency
Typ. (%)
87
90
89
88
88
87
90
89
92
92
Outline Drawing
Pinout
Pin Description
-Vin
+Vin
CNT
+V
-V
TRIM
+S
-S
Function
Negative Input Terminal
Positive Input Terminal
On / Off Control terminal
Positive Output Terminal
Negative Output Terminal
Output adjustment Trim pin
Positive Remote sense
Negative Remote sense
PAH350S48-12
INPUT:36-76V
OUTPUT:12V
12.5A
29.2A
DC-DC
CNT
+Vin
MADE IN JAPAN
+V
+S
TRM
-S
For Additional Information, please visit
us.tdk-lambda.com/lp/products/pah300-series.htm
1-800-526-2324 • www.us.tdk-lambda.com/lp/
-Vin
CASE
-V
Options
Suffix
-
/T
/P
Description
M3 Tapped inserts for mounting
M3 clearance inserts for mounting
Positive logic remote On/Off (Not on PAH450S)
Other DC-DC Products
PAF
PAH
PAQ
PAE
PX
400-700W Full brick DC-DC
Other half brick DC-DC converters
Quarter brick DC-DC converters
Eighth brick DC-DC converters
10-48W, 12-48V DC-DC
180
Revision A5: Apr 2015
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