TOP234GN Power Integrations, TOP234GN Datasheet - Page 9

IC OFFLINE SWIT OVP UVLO 8SMD

TOP234GN

Manufacturer Part Number
TOP234GN
Description
IC OFFLINE SWIT OVP UVLO 8SMD
Manufacturer
Power Integrations
Series
TOPSwitch®-FXr
Type
Off Line Switcherr
Datasheet

Specifications of TOP234GN

Output Isolation
Isolated
Frequency Range
66 ~ 132kHz
Voltage - Output
700V
Power (watts)
30W
Operating Temperature
-40°C ~ 150°C
Package / Case
8-SMD Gull Wing, 7 Leads
Output Voltage
12 V
Input / Supply Voltage (max)
265 VAC
Input / Supply Voltage (min)
85 VAC
Duty Cycle (max)
78 %
Switching Frequency
132 KHz
Supply Current
1.5 mA
Operating Temperature Range
- 40 C to + 150 C
Mounting Style
SMD/SMT
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
TOP234GN
Manufacturer:
PowerInt
Quantity:
350
Company:
Part Number:
TOP234GN,,5800,SOP-7,POWER,,,2020+
0
Company:
Part Number:
TOP234GN-TL
Manufacturer:
POWER
Quantity:
10 000
Company:
Part Number:
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Company:
Part Number:
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Using FREQUENCY and MULTI-
FUNCTION Pins
FREQUENCY (F) Pin Operation
The FREQUENCY pin is a digital input pin available in
TO-220 package only. Shorting the FREQUENCY pin to
SOURCE pin selects the nominal switching frequency of
132 kHz (Figure 10) which is suited for most applications. For
other cases that may benefit from lower switching frequency
such as noise sensitive video applications, a 66 kHz switching
frequency (half frequency) can be selected by shorting the
FREQUENCY pin to the CONTROL pin (Figure 11). In
addition, an example circuit shown in Figure 12 may be used to
lower the switching frequency from 132 kHz in normal operation
to 66 kHz in standby mode for very low standby power
consumption.
MULTI-FUNCTION (M) Pin Operation
When current is fed into the MULTI-FUNCTION pin, it works
as a voltage source of approximately 2.6 V up to a maximum
current of +400 µA (typical). At +400 µA, this pin turns into
a constant current sink. When current is drawn out of the
MULTI-FUNCTION pin, it works as a voltage source of
approximately 1.32 V up to a maximum current of –240 µA
(typical). At –240 µA, it turns into a constant current source.
Refer to Figure 9.
There are a total of five functions available through the use of
the MULTI-FUNCTION pin: OV, UV, line feed forward with
DC
A short circuit between the MULTI-FUNCTION pin and
SOURCE pin disables all five functions and forces
TOPSwitch-FX to operate in a simple three terminal mode like
TOPSwitch-II. The MULTI-FUNCTION pin is typically used
Table 2. Typical MULTI-FUNCTION Pin Configurations.
*This table is only a partial list of many MULTI-FUNCTION pin configurations that are possible.
Three Terminal Operation
Under-Voltage
Overvoltage
Line Feed Forward (DC
Line Feed Forward (I
External Current Limit
Remote ON/OFF
MAX
Figure Number
reduction, external current limit and remote ON/OFF.
LIMIT
MAX
)
)
13
MULTI-FUNCTION PIN TABLE*
14
15
16
for line sensing by connecting a resistor from this pin to the
rectified DC high voltage bus to implement OV, UV and DC
reduction with line voltage functions. In this mode, the value
of the resistor determines the line OV/UV thresholds, and the
DC
starting from just above the UV threshold. In high efficiency
applications this pin can be used in the external current limit
mode instead, to reduce the current limit externally to a value
close to the operating peak current, by connecting the pin to the
SOURCE pin through a resistor. The same pin can also be used
as a remote on/off and a synchronization input in both modes.
Please refer to Table 2 for possible combinations of the functions
with example circuits shown in Figure 13 through Figure 23. A
description of specific functions in terms of the MULTI-
FUNCTION pin I/V characteristic is shown in Figure 8. The
horizontal axis represents MULTI-FUNCTION pin current
with positive polarity indicating currents flowing into the pin.
The meaning of the vertical axes varies with functions. For
those that control the on/off states of the output such as UV, OV
and remote ON/OFF, the vertical axis represents the enable/
disable states of the output. UV triggers at I
and OV triggers at I
+225 µA, the output is enabled. For external current limit and
line feed forward with DC
represents the magnitude of the I
forward with DC
78% at I
current limit is available only with negative MULTI-FUNCTION
pin current. Please see graphs in the typical performance
characteristics section for the current limit programming range
and the selection of appropriate resistor value.
MAX
17
M(DC)
is reduced linearly with rectified DC high voltage
(+90 µA typical) to 38% at I
18
MAX
OV
reduction lowers maximum duty cycle from
19
(+225 µA typical). Between +50 µA and
MAX
20
reduction, the vertical axis
LIMIT
21
TOP232-234
and DC
OV
(+225 µA). External
UV
(+50 µA typical)
MAX
22
. Line feed
7/01
B
23
9
MAX