LS4301-7R POWER-ONE [Power-One], LS4301-7R Datasheet - Page 23

• Manufacturer Part Number: LS4301-7R
• Description: 100 Watt AC-DC Converters with PFC
• Manufacturer: POWER-ONE [Power-One]

Cassette Style
JFET output (D0…D4):
Connector pin D is internally connected via the drain-
source path of a JFET (self-conducting type) to the nega-
tive potential of output 1. U
to a monitored voltage level ( U
rent I
JFET is protected by a 0.5 W Zener diode of 8.2 V against
external overvoltages.
Edition 01/01.2001
D Undervoltage Monitor
The input and/or output undervoltage monitoring circuit op-
erates independently of the built-in input undervoltage lock-
out circuit. A logic "low" (JFET output) or "high" signal (NPN
output) is generated at pin 20 as soon as one of the moni-
tored voltages drops below the preselected threshold level
U
when the monitored voltage(s) exceed(s) U
Table 18: Undervoltage monitoring functions
1
2
3
4
NPN output (D5...DD):
Connector pin D is internally connected via the collector-
emitter path of a NPN transistor to the negative potential of
output 1. U
voltage level ( U
through the open collector should not exceed 20 mA. The
NPN output is not protected against external overvoltages.
U
Table 19: D-output logic signals
Threshold level adjustable by potentiometer
Fixed value. Tracking if U
The threshold level permanently adjusted according to customer specification 2% at 25 C. Any value within the specified range is
basically possible but causes a special type designation in addition to the standard option designations (D0/D9)!
Option D monitors the boost regulator output voltage. The trigger level is adjusted in the factory to 355 V DC.
Version of D
D1, D2, D3, D4, D0
D5, D6, D7, D8, D9, DD
t
D
. The return for this signal is Vo1–. The D output recovers
JFET
should not exceed 40 V.
U
U
D1
D2
D3
D4
D0
i
i
D
Output type
and U
and U
U
U
U
U
through the JFET should not exceed 2.5 mA. The
i
i
i
i
, U
, U
or U
or U
D
o1
o1
o1
o1
o1
o1
status
status
0.4 V (logic low) corresponds to a monitored
NPN
U
U
DD
D5
D6
D7
D8
D9
i
U
t
U
t
+ U
+ U
and/or U
t
t
h
h
o1
adjusted via R-input, option P or sense lines.
D
yes
yes
yes
yes
U
no
no
no
o1
high, H, I
Monitoring
low, L, U
high, H, I
low, L, U
i
)
0.4 V (logic low) corresponds
i
and/or U
U
t
U
D
D
+ U
D
D
U
yes
yes
yes
yes
yes
yes
D output, U
D output, U
i
no
o1
25 A at U
0.4 V at I
0.4 V at I
U
25 A at U
h
o1
t
. The current I
100 Watt AC-DC Converters
resp. U
)
high
low
-
355V DC
355V DC
-
-
355V DC
355V DC
t
U
D
D
+ U
D
t
D
. The cur-
D
= 2.5 mA
o
= 20 mA
D
= 5.25 V
= 40 V
h
Minimum adjustment range
U
. The
U
4
4
4
4
t
ti
of threshold level U
D
threshold level U
level U
through a hole in the front cover, or factory adjusted to a
fixed value specified by the customer.
Option D exists in various versions D0...DD as shown in the
following table.
Fig. 36
Option D0...D4: JFET output, I
Fig. 37
Option D5...DD: NPN output, U
U
i
3.5...40 V
-
(0.95...0.985 U
(0.95...0.985 U
3.5...40 V
3.5...40 V
3.5...40 V
U
t
to
+ U
is either adjusted by a potentiometer, accessible
high
h
low
t
U
resp. U
1
3
3
1
to
ti
o1
o1
is adjusted in the factory. The threshold
)
)
o
2
2
U
t
Typical hysteresis U
D
o1
for U
2.5 mA
11007
11006
40 V, I
Configuration
2.5...0.6
2.5...0.6
2.5...0.6
2.5...0.6
t min
U
Vo1+
D
Vo1–
"0"
"0"
Vo1+
D
Vo1–
JFET
-
NPN
ho
D
... U
S Series PFC
I
I
D
D
U
20 mA
t max
U
ho
D
D
[% of U
R
R
p
p
23/27
t
]