TOP257YN Power Integrations, TOP257YN Datasheet - Page 18

• Manufacturer Part Number: TOP257YN
• Description: IC OFFLINE SWIT PROG OVP TO220
• Manufacturer: Power Integrations
• Series: TOPSwitch®-HXr
• Type: Off Line Switcherr

Specifications of TOP257YN

• Output Isolation: Isolated
• Frequency Range: 119 ~ 145kHz
• Voltage - Output: 700V
• Power (watts): 157W
• Operating Temperature: -40°C ~ 150°C
• Package / Case: TO-220-7 (Formed Leads), 5 Leads
• Output Voltage: 700 V
• Input / Supply Voltage (max): 9 V
• Input / Supply Voltage (min): - 0.3 V
• Duty Cycle (max): 78 %
• Switching Frequency: 132 KHz
• Operating Temperature Range: - 40 C to + 150 C
• Mounting Style: Through Hole
• Maximum Operating Temperature: + 150 C
• Minimum Operating Temperature: - 40 C
• Output Current: 5.44 A
• Output Power: 157 W
• For Use With: 596-1193 - KIT REF DESIGN TOP HX FOR TOP258
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 596-1188-5

Typical Uses of VOLTAGE MONITOR (V) and EXTERNAL CURRENT LIMIT (X) Pins (cont.)
Typical Uses of MULTI-FUNCTION (M) Pin
Figure 26. Active-on Remote ON/OFF with Line-Sense and External
Rev. F 01/09
Figure 29. Three Terminal Operation (MULTI-FUNCTION Features Disabled).
TOP259-261YN would
use the G pin as the
return for Q
18
Voltage
Voltage
Input
Input
Current Limit.
DC
DC
+
+
R
-
-
TOP252-262
.
D
S
D
S
R
CONTROL
CONTROL
LS
X
V
M
Figure 28. Line-Sensing for Undervoltage, Overvoltage, Line Feed-Forward and
4 M
R
IL
Reset
C
Q
C
V
V
DC
DC
R
UV
OV
Q
output or can be replaced
by a manual switch.
D
Voltage
MAX
MAX
R
Input
= I
Latched Output Overvoltage Protection with Device Reset.
= I
DC
+
can be an optocoupler
-
@100 VDC = 76%
@375 VDC = 41%
D
UV
OV
S
16 k
10 k
× R
× R
S
For R
LS
LS
I
LIMIT
PI-4725-011008
C
S
+ V
PI-4727-061207
+ V
ON/OFF
IL
Q
V
=
= 61%
V
M
S
R
(I
(I
12 k
V
V
S C
= I
= I
D
S
UV
oV
R
)
)
CONTROL
LS
V
4 M
Figure 30. Line Sensing for Undervoltage, Overvoltage and Line Feed-Forward.
Figure 27. Line Sensing and Externally Set Current Limit.
TOP259-261YN would
use the G pin as the
return for R
C
V
V
For R
DC
DC
UV
OV
MAX
MAX
Voltage
Voltage
V
V
= I
= I
Input
Input
UV
OV
LS
DC
DC
+
+
UV
OV
Sense Output Voltage
IL
@ 100 VDC = 76%
@ 375 VDC = 41%
-
-
= 102.8 VDC
.
= 4 M
= 451 VDC
× R
× R
LS
LS
+ V
+ V
PI-4756-121007
V
V
(I
(I
V
V
= I
= I
D
S
D
S
UV
OV
)
R
R
)
CONTROL
CONTROL
LS
LS
X
12 k
M
V
4 M
R
4 M
IL
V
V
For R
DC
DC
C
C
V
V
For R
DC
DC
UV
OV
UV
OV
MAX
MAX
V
V
= I
= I
MAX
MAX
V
V
UV
OV
LS
= I
= I
For R
See Figure 55b for
other resistor values
(R
I
LIMIT
UV
OV
LS
UV
OV
@ 100 VDC = 76%
@ 375 VDC = 41%
= 102.8 VDC
UV
IL
= 4 M
= 451 VDC
OV
@ 100 VDC = 76%
@ 375 VDC = 41%
I
LIMIT
www.powerint.com
= 4 M
= 102.8 VDC
= 451 VDC
) to select different
× R
× R
x R
values.
x R
IL
LS
= 12 k
LS
= 61%
LS
LS
+ V
+ V
PI-4728-120307
+ V
+ V
M
M
V
V
(I
(I
(I
(I
M
M
V
V
= I
= I
= I
= I
UV
OV
UV
oV
)
)
)
)