QW020A0G1-H Lineage Power, QW020A0G1-H Datasheet - Page 14

• Manufacturer Part Number: QW020A0G1-H
• Description: CONVERTER DC/DC 2.5V 50W OUT T/H
• Manufacturer: Lineage Power
• Series: QWr
• Type: Isolated with Remote On/Offr

Specifications of QW020A0G1-H

• Output: 2.5V
• Number Of Outputs: 1
• Power (watts): 50W
• Mounting Type: Through Hole
• Voltage - Input: 36 ~ 75V
• Package / Case: 8-DIP Module
• 1st Output: 2.5 VDC @ 20A
• Size / Dimension: 2.28" L x 1.45" W x 0.34" H (57.9mm x 36.8mm x 8.6mm)
• Power (watts) - Rated: 50W
• Operating Temperature: -40°C ~ 85°C
• Efficiency: 89%
• Approvals: CE, CSA, UL, VDE
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• 3rd Output: -
• 2nd Output: -
• 4th Output: -

Tyco Electronics Power Systems
Feature Descriptions
Output Voltage Set-Point Adjustment (Trim) (con-
tinued)
Table 1
For example, to trim-down the output voltage of 2.5 V mod-
ule (QW020A0G) by 8% to 2.3 V, Rtrim-down is calculated
as follows:
F= 0.08, A = 5.11, & B = 45.31
Figure 42. Circuit Configuration to Decrease Output
The QW010/015/020 modules have a fixed current-limit set
point. As the output voltage is trim-down, the available out-
put power is reduced.
With an external resistor Rtrim-up, connected between the
TRIM and SENSE(+) pins, the output voltage set point VO,
set increases (see Figure 42). The following equation deter-
mines the required external-resistor value to trim-up and out-
put voltage:
Rtrim-up is the external resistor in kW
∆%
Data Sheet
August 22, 2006
is the percentage change in voltage
F
V
ON/OFF
V
=
I
I
(+)
(–)
V
5.0
3.3
2.5
1.8
1.5
1.2
Voltage.
O
R
∆%
-------- -
100
trim-down
R
R
SENSE(+)
trim-down
SENSE(–)
trim-up
V
TRIM
V
O
O
(+)
=
(–)
=
⎧
⎨
⎩
5.11
--------- - 45.31
0.08
=
⎧
⎨
⎩
3.248
2.312
2.315
A
--- - B
F
(continued)
5.11
5.11
5.11
18.565kΩ
A
–
–
R
⎫
⎬
⎭
36 Vdc to 75 Vdc Input; 1.2 Vdc to 5.0 Vdc Output; 10 A to 20 A
trim-down
kΩ
⎫
⎬
⎭
kΩ
QW010/015/020 Series Power Modules: dc-dc Converters;
R
18.645
17.711
17.711
LOAD
45.31
45.31
45.31
B
A and B values are defined in Table 2 for various
models
Table 2
For example, to trim-up the output voltage of 1.5 V module
(QW020A0M) by 8% to 1.62 V, Rtrim-up is calculated as fol-
lows:
F= 0.08, A = 3.946, & B = 11.454
Figure 43. Circuit Configuration to Increase Output
The voltage between the VO(+) and VO(–) terminals must
not exceed the minimum output overvoltage protection value
shown in the Feature Specifications table. This limit includes
any increase in voltage due to remote-sense compensation
and output voltage set-point adjustment trim.
Although the output voltage can be increased by both the
remote sense and by the trim, the maximum increase for the
output voltage is not the sum of both. The maximum
increase is the larger of either the remote sense or the trim.
The amount of power delivered by the module is defined as
the voltage at the output terminals multiplied by the output
current. When using remote sense and trim, the output volt-
age of the module can be increased, which at the same out-
put current would increase the power output of the module.
Care should be taken to ensure that the maximum output
power of the module remains at or below the maxi mum
rated power.
Output Voltage
V
ON/OFF
V
I
I
(+)
(–)
1.2
1.5
1.8
2.5
3.3
5.0
(V)
R
Voltage.
trim-up
SENSE(+)
SENSE(–)
R
trim-up
V
TRIM
V
=
O
O
(+)
(-)
⎧
⎨
⎩
3.946
------------ - 11.454
0.08
=
15.9
19.8
23.8
34.5
45.5
69.0
A
37.871kΩ
–
R
trim-up
1089
1089
1089
1690
1690
1690
⎫
⎬
⎭
B
kΩ
R
LOAD
62.0
73.1
73.1
73.1
104
104
C
14