TOP258PN Power Integrations, TOP258PN Datasheet - Page 12

IC OFFLINE SWIT PROG OVP 8DIP

TOP258PN

Manufacturer Part Number
TOP258PN
Description
IC OFFLINE SWIT PROG OVP 8DIP
Manufacturer
Power Integrations
Series
TOPSwitch®-HXr
Type
Off Line Switcherr
Datasheet

Specifications of TOP258PN

Output Isolation
Isolated
Frequency Range
119 ~ 145kHz
Voltage - Output
700V
Power (watts)
77W
Operating Temperature
-40°C ~ 150°C
Package / Case
8-DIP (0.300", 7.62mm), 7 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
SMD/SMT
Maximum Operating Temperature
+ 150 C
Minimum Operating Temperature
- 40 C
Output Current
6.88 A
Output Power
48 W
For Use With
596-1193 - KIT REF DESIGN TOP HX FOR TOP258
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
596-1189-5

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
TOP258PN
Manufacturer:
PowerInt
Quantity:
2 100
Part Number:
TOP258PN
Manufacturer:
PANASONIC
Quantity:
230
Part Number:
TOP258PN
Manufacturer:
POWER
Quantity:
1 017
Figure 12. MULTI-FUNCTION (P and G package). VOLTAGE MONITOR and EXTERNAL CURRENT LIMIT (Y, E/L and M package) Pin Characteristics.
The circuit examples shown in Figures 41, 42 and 43 show a
simple method for implementing the primary sensed over-
voltage protection.
During a fault condition resulting from loss of feedback, output
voltage will rapidly rise above the nominal voltage. The increase
in output voltage will also result in an increase in the voltage at
the output of the bias winding. A voltage at the output of the
bias winding that exceeds of the sum of the voltage rating of the
Zener diode connected from the bias winding output to the
V-pin (or M-pin) and V-pin (or M-pin) voltage, will cause a
current in excess of I
(or M-pin), which will trigger the OVP feature.
Rev. F 01/09
12
Pin Voltage
Duty Cycle
Note: This figure provides idealized functional characteristics with typical performance values. Please refer to the parametric
Switching
Maximum
MOSFET
Current
Output
Limit
table and typical performance characteristics sections of the data sheet for measured data. For a detailed description of
each functional pin operation refer to the Functional Description section of the data sheet.
TOP252-262
-250
(Enabled)
(Disabled)
I
DC
LIMIT
X and V Pins (Y, E, L and M Packages) and M Pin (P and G Packages) Current (μA)
V
or I
MAX
-200
(Default)
M
(78%)
to be injected into the V-pin
-150
V
X Pin
BG
-100
-50
I
REM(N)
0
Disabled when supply
output goes out of
regulation
I
25
UV
The primary sensed OVP protection circuit shown in Figures 41,
42 and 43 is triggered by a signifi cant rise in output voltage (and
therefore bias winding voltage). If the power supply is operating
under heavy load or low input line conditions when an open
loop occurs, the output voltage may not rise signifi cantly.
Under these conditions, a latching shutdown will not occur until
load or line conditions change. Nevertheless, the operation
provides the desired protection by preventing signifi cant rise in
the output voltage when the line or load conditions do change.
Primary side OVP protection with the TOPSwitch-HX in a typical
application will prevent a nominal 12 V output from rising above
approximately 20 V under open loop conditions. If greater
accuracy is required, a secondary sensed OVP circuit is
recommended.
M Pin
50
75
V Pin
100
I
OV
125
(Non-Latching)
www.powerint.com
I
OV(LS)
336
PI-4646-071708
(Latching)
I
I
I
I

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