Instructions
Table Of Contents
- LS50(75(100(150 Series
- Instruction Manual
- 1. Terminal Explanation
- LS50, LS75
- 2. Terminal connecting method
- LS50, LS75 LS100, LS150
- Maximum output current of each output terminal is 25A. If more than 25A, use 2 terminals
- 3. Explanation of Functions and Precautions
- 3-1. Input Voltage Range
- 3-2. Output Voltage Range
- 3-3. Inrush Current
- 3-4. Over Voltage Protection (OVP)
- 3-5. Over Current Protection (OCP)
- 3-6. Output Ripple & Noise
- 3-7. Series Operation
- 3-8. Parallel Operation
- 4. Isolation / Withstand Voltage
- 4-1. Isolation Test
- 4-2. Withstand Voltage
- 5-1. Output Derating according to the Mounting Directions
- NOTE : LS50, LS75 & LS150 series do not require Input Voltage Derating.
- 5-2 Mounting Method
- Note 1 : When using separate loads, use of two pcs of 0.8mm thick crimp-type terminal is recommended.
- 7. External Fuse Rating
- 8. Before concluding that the unit is at fault…
NEMIC-LAMBDA
LS50
⋅
75
⋅
100
⋅
150 Series
INSTRUCTION MANUAL
5. Mounting Directions
5-1. Output Derating according to the Mounting Directions
Recommended standard mounting is Method ( A ). Method ( B ), ( C ) and ( D ) are also possible. Refer to the derating
below. Please do not use installation Method ( E ), where the PCB will be on the topside and heat will be trapped inside
the unit.
In the following derating curve, the maximum output current is considered to be 100%.
(A) Output Derating versus Ambient Temperature (Convection Cooling)
LS50-3.3, -5, -12, -15, -24, -36 & -48
Output Derating Vs Ambient Temperature
0
20
40
60
80
100
120
-25 0 25 50 75
100
Ambient Temperature (°C)
Load
Mounting
Mounting
A, B & D
C
40 60
70
50
70
5