JAHW075Y1 Lineage Power, JAHW075Y1 Datasheet - Page 11

• Manufacturer Part Number: JAHW075Y1
• Description: CONVERTER DC/DC 1.8V 27W OUT
• Manufacturer: Lineage Power
• Series: JAHWr
• Type: Isolated with Remote On/Offr

Specifications of JAHW075Y1

• Output: 1.8V
• Number Of Outputs: 1
• Power (watts): 27W
• Mounting Type: Through Hole
• Voltage - Input: 36 ~ 75V
• Package / Case: 9-DIP Module
• 1st Output: 1.8 VDC @ 15A
• Size / Dimension: 2.40" L x 2.28" W x 0.50" H (61mm x 57.9mm x 12.7mm)
• Power (watts) - Rated: 27W
• Operating Temperature: -40°C ~ 100°C
• Efficiency: 88%
• Approvals: CE, CSA, UL, VDE
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• 3rd Output: -
• 2nd Output: -
• 4th Output: -

April 2008
Feature Descriptions
Remote Sense
Figure 21. Effective Circuit Configuration for
Output Voltage Set-Point Adjustment
(Trim)
Output voltage trim allows the user to increase or
decrease the output voltage set point of a module. This is
accomplished by connecting an external resistor between
the TRIM pin and either the SENSE(+) or SENSE(–) pins.
The trim resistor should be positioned close to the mod-
ule.
If not using the trim feature, leave the TRIM pin open.
With an external resistor between the TRIM and
SENSE(–) pins (R
(V
tion determines the required external-resistor value to
obtain a percentage output voltage change of Δ%.
The test results for this configuration are displayed in
Figure 23. This figure applies to all output voltages.
With an external resistor connected between the TRIM
and SENSE(+) pins (R
point (V
Lineage Power
O, adj
R
adj-down
SUPPLY
RESISTANCE
) decreases (see Figure 22). The following equa-
CONTACT
O, adj
Single-Module Remote-Sense Operation
=
) increases (see Figure 24).
I
⎛
⎝
I
1000
------------ - 11
Δ%
adj-down
(continued)
V
V
I
I
–
(+)
(–)
adj-up
SENSE(+)
SENSE(–)
), the output voltage set point
⎞ kΩ
⎠
V
V
), the output voltage set
dc-dc Converters; 36 to 75 Vdc Input, 1.8 Vdc Output; 18 W to 36 W
O
O
(+)
(–)
(continued)
DISTRIBUTION LOSSES
I
O
CONTACT AND
LOAD
8-651 (F).m
The following equation determines the required exter-
nal-resistor value to obtain a percentage output voltage
change of Δ%.
The voltage between the V
must not exceed the minimum output overvoltage shut-
down value indicated in the Feature Specifications
table. This limit includes any increase in voltage due to
remote-sense compensation and output voltage set-
point adjustment (trim). See Figure 21.
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. Consult the factory if you
need to increase the output voltage more than the
above limitation.
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 voltage of the module can be increased, which at
the same output 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 maximum rated power.
Figure 22. Circuit Configuration to Decrease
R
adj-up
V
ON/OFF
CASE
V
I
I
(+)
(–)
=
⎛
⎜
⎜
⎝
(
------------------------------------------------------------------------- - 1000
Output Voltage
V
O nom
,
SENSE(+)
SENSE(–)
)
V
TRIM
V
(
1.225Δ%
O
O
1
(+)
(–)
+
------- -
100
Δ%
O
(+) and V
)
–
1.225
R
adj-down
O
(–) terminals
–
R
LOAD
11
8-748 (F).b
⎞
⎟
⎟
⎠
kΩ
11