TNY266GN Power Integrations, TNY266GN Datasheet - Page 4

• Manufacturer Part Number: TNY266GN
• Description: IC OFFLINE SWIT OTP OCP HV 8SMD
• Manufacturer: Power Integrations
• Series: TinySwitch®-IIr

Specifications of TNY266GN

• Output Isolation: Isolated
• Frequency Range: 124 ~ 140kHz
• Voltage - Output: 700V
• Power (watts): 15W
• Operating Temperature: -40°C ~ 150°C
• Package / Case: 8-SMD Gull Wing, 7 Leads
• Output Voltage: 5.8 V
• Input / Supply Voltage (max): 265 VAC
• Input / Supply Voltage (min): 85 VAC
• Duty Cycle (max): 68 %
• Switching Frequency: 132 KHz
• Supply Current: 265 uA
• Operating Temperature Range: - 40 C to + 150 C
• Mounting Style: SMD/SMT
• Supply Voltage: 265VAC
• Digital Ic Case Style: SOIC
• No. Of Pins: 8
• No. Of Regulated Outputs: 1
• Filter Terminals: SMD
• Rohs Compliant: Yes
• On Resistance Rds(on): 14ohm
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

300
200
100
70 °C (typical) is provided to prevent overheating of the PC
board due to a continuous fault condition.
Current Limit
The current limit circuit senses the current in the power MOSFET.
When this current exceeds the internal threshold (I
power MOSFET is turned off for the remainder of that cycle. The
current limit state machine reduces the current limit threshold
by discrete amounts under medium and light loads.
The leading edge blanking circuit inhibits the current limit
comparator for a short time (t
turned on. This leading edge blanking time has been set so that
current spikes caused by capacitance and secondary-side rectifier
reverse recovery time will not cause premature termination of
the switching pulse.
Auto-Restart
In the event of a fault condition such as output overload, output
short circuit, or an open loop condition, TinySwitch-II enters
into auto-restart operation. An internal counter clocked by the
oscillator gets reset every time the EN/UV pin is pulled low. If
the EN/UV pin is not pulled low for 50 ms, the power MOSFET
switching is normally disabled for 850 ms (except in the case of
line under-voltage condition, in which case it is disabled until
the condition is removed). The auto-restart alternately enables
and disables the switching of the power MOSFET until the fault
condition is removed. Figure 5 illustrates auto-restart circuit
operation in the presence of an output short circuit.
In the event of a line under-voltage condition, the switching
of the power MOSFET is disabled beyond its normal 850 ms
time until the line under-voltage condition ends.
Figure 5. TinySwitch-II Auto-Restart Operation.
10
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Line Under-Voltage Sense Circuit
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