IC OFFLINE SWIT PROG OVP 8DIP

TOP258PN

Manufacturer Part NumberTOP258PN
DescriptionIC OFFLINE SWIT PROG OVP 8DIP
ManufacturerPower Integrations
SeriesTOPSwitch®-HX
TypeOff Line Switcher
TOP258PN datasheet
 


Specifications of TOP258PN

Output IsolationIsolatedFrequency Range119 ~ 145kHz
Voltage - Output700VPower (watts)77W
Operating Temperature-40°C ~ 150°CPackage / Case8-DIP (0.300", 7.62mm), 7 Leads
Output Voltage700 VInput / Supply Voltage (max)9 V
Input / Supply Voltage (min)- 0.3 VDuty Cycle (max)78 %
Switching Frequency132 KHzOperating Temperature Range- 40 C to + 150 C
Mounting StyleSMD/SMTMaximum Operating Temperature+ 150 C
Minimum Operating Temperature- 40 COutput Current6.88 A
Output Power48 WFor Use With596-1193 - KIT REF DESIGN TOP HX FOR TOP258
Lead Free Status / RoHS StatusLead free / RoHS CompliantOther names596-1189-5
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Line Overvoltage Shutdown (OV)
The same resistor used for UV also sets an overvoltage
threshold, which, once exceeded, will force TOPSwitch-HX to
stop switching instantaneously (after completion of the current
switching cycle). If this condition lasts for at least 100 μs, the
TOPSwitch-HX output will be forced into off state. Unlike with
TOPSwitch-GX, however, when the line voltage is back to
normal with a small amount of hysteresis provided on the OV
threshold to prevent noise triggering, the state machine sets to
S13 and forces TOPSwitch-HX to go through the entire auto-
restart sequence before attempting to switch again. The ratio
of OV and UV thresholds is preset at 4.5, as can be seen in
Figure 12. When the MOSFET is off, the rectifi ed DC high
voltage surge capability is increased to the voltage rating of the
MOSFET (700 V), due to the absence of the refl ected voltage
and leakage spikes on the drain. The OV feature can be
disabled independent of the UV feature.
In order to reduce the no-load input power of TOPSwitch-HX
designs, the V-pin (or M-pin for P Package) operates at very low
currents. This requires careful layout considerations when
designing the PCB to avoid noise coupling. Traces and
components connected to the V-pin should not be adjacent to
any traces carrying switching currents. These include the drain,
Voltage Monitor and External Current Limit Pin Table*
Figure Number
16
Three Terminal Operation
Line Undervoltage
Line Overvoltage
Line Feed-Forward (DC
)
MAX
Output Overvoltage Protection
Overload Power Limiting
External Current Limit
Remote ON/OFF
Device Reset
*
This table is only a partial list of many VOLTAGE MONITOR and EXTERNAL CURRENT LIMIT Pin Confi gurations that are possible.
Table 2.
VOLTAGE MONITOR (V) Pin and EXTERNAL CURRENT LIMIT (X) Pin Confi guration Options.
Multi-Function Pin Table*
Figure Number
29
Three Terminal Operation
Line Undervoltage
Line Overvoltage
Line Feed-Forward (DC
)
MAX
Output Overvoltage Protection
Overload Power Limiting
External Current Limit
Remote ON/OFF
Device Reset
*
This table is only a partial list of many MULTI-FUNCTIONAL Pin Confi gurations that are possible.
Table 3.
MULTI-FUNCTION (M) Pin Confi guration Options.
www.powerint.com
clamp network, bias winding return or power traces from other
converters. If the line sensing features are used, then the sense
resistors must be placed within 10 mm of the V-pin to minimize
the V-pin node area. The DC bus should then be routed to the
line sense resistors. Note that external capacitance must not
be connected to the V-pin as this may cause misoperaton of the
V pin related functions.
Hysteretic or Latching Output Overvoltage Protection (OVP)
The detection of the hysteretic or latching output overvoltage
protection (OVP) is through the trigger of the line overvoltage
threshold. The V-pin or M-pin voltage will drop by 0.5 V, and
the controller measures the external attached impedance
immediately after this voltage drops. If I
(336 μA typical) longer than 100 μs, TOPSwitch-HX will latch
into a permanent off state for the latching OVP. It only can be
reset if V
or V
V
M
up-reset threshold (V
If I
or I
does not exceed I
V
M
100 μs, TOPSwitch-HX will initiate the line overvoltage and the
hysteretic OVP. Their behavior will be identical to the line
overvoltage shutdown (OV) that has been described in detail in
the previous section.
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TOP252-262
or I
exceeds I
V
M
goes below 1 V or V
goes below the power-
C
) and then back to normal.
C(RESET)
or exceeds no longer than
OV(LS)
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OV(LS)
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Rev. F 01/09