PKL4118PIT Ericsson Power Modules, PKL4118PIT Datasheet - Page 35

• Manufacturer Part Number: PKL4118PIT
• Description: Module DC-DC 1-OUT 1.8V 60A 108W 11-Pin Half-Brick
• Manufacturer: Ericsson Power Modules
• Series: PKLr

Specifications of PKL4118PIT

• Product: Isolated
• Output Power: 108 W
• Input Voltage Range: 36 V to 75 V
• Number Of Outputs: 1
• Output Voltage (channel 1): 1.8 V
• Output Current (channel 1): 60 A
• Isolation Voltage: 1.5 KV
• Package / Case Size: Extended Half Brick
• Output Type: Isolated
• Lead Free Status / Rohs Status: Details

Thermal Consideration continued
Definition of reference temperature (T
The reference temperature is used to monitor the temperature
limits of the product. Temperatures above maximum T
not allowed and may cause degradation or permanent
damage to the product. T
temperature range for normal operating conditions.
T
margins, proper operation and high reliability of the module.
Ambient Temperature Calculation
By using the thermal resistance the maximum allowed
ambient temperature can be calculated.
1. The power loss is calculated by using the formula
((1/η) - 1) × output power = power losses (Pd).
η = efficiency of converter. E.g 89.5 % = 0.895
2. Find the thermal resistance (Rth) in the Thermal Resistance
graph found in the Output section for each model.
Calculate the temperature increase (ΔT).
3. Max allowed ambient temperature is:
Max Tref - ΔT.
E.g PKL4118B PIT at 2m/s:
1.
2. 25.0 W × 1.3°C/W = 32.5°C
3. 110 °C — 32.5°C = max ambient temperature is 77.5°C
The actual temperature will be dependent on several factors
such as the PCB size, number of layers and direction of
airflow.
ΔT = Rth x Pd
Prepared (also subject responsible if other)
EQUENXU
Approved
SEC/D (Julia You)
PKL 4000 PI series
DC/DC converters, Input 36-75 V, Output 100 A/300 W
ref
((
is defined by the design and used to guarantee safety
0.852
1
) -
1) × 144 W = 25.0 W
ref
is also used to define the
ref
)
Checked
EZYPING
ref
are
Connections
PRODUCT SPECIFICATION
No.
3/1301-BMR 632 Uen
Date
2007-01-11
Pin
5,10
9,11
1
2
3
4
6
7
8
+In
RC
Case
-In
-Out
-Sen
V
+Sen
+Out
Designation
adj
Technical Specifi cation
EN/LZT 146 311 R2E June 2007
© Ericsson Power Modules AB
Rev
B
Positive Input
Remote Control
Connected to baseplate
Negative Input
Negative Output
Negative Sense
Output voltage adjust
Positive Sense
Positive Output
Function
Reference
4 (5)
35