LinkSwitch-TNZ
Energy Efficient Off-line Switcher IC with Best-in-Class Light Load Efficiency and Lossless AC Zero-Cross Detection
Applications
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Product
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Data Sheet
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Output Power (Max) - Open Frame, 230V
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Output Power (Max) - Open Frame, Univ
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Current - Output (Max, CCM, 230V)
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Current - Output (Max, CCM, Univ)
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Current - Output (Max, MDCM, 230V)
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Current - Output (Max, MDCM, Univ)
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Integrated X-Capacitor Discharge
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Max X Capacitance
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Total Series Resistance
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RDK Available
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Auto-Restart & Overvoltage Response
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Over-Temperature Response
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Topology
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Protection Features
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Breakdown Voltage
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Switching Frequency (max)
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Voltage - Input (Min)
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Voltage - Input (Max)
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Internal Switch
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IC Package
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Product Type
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Control Scheme
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Duty Cycle (Max)
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Output Profile
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Voltage - Start-up
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Temperature - Operating (Min)
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Temperature - Operating (Max)
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MSL Rating
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Data Sheet
View Data Sheet
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Output Power (Max) - Open Frame, 230V
5.0 W
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Output Power (Max) - Open Frame, Univ
3.0 W
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Current - Output (Max, CCM, 230V)
80 mA
|
Current - Output (Max, CCM, Univ)
80 mA
|
Current - Output (Max, MDCM, 230V)
63 mA
|
Current - Output (Max, MDCM, Univ)
63 mA
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|
|
|
RDK Available
|
Auto-Restart & Overvoltage Response
Auto-restart, Hysteretic
|
Over-Temperature Response
Auto-restart, Hysteretic
|
Topology
Buck-Boost, Flyback, Tapped Buck
|
Protection Features
Input Overvoltage, Output Open Loop, Output Overload, Output Overvoltage, Output Short Circuit, Overtemperature
|
Breakdown Voltage
725 V
|
Switching Frequency (max)
66 kHz
|
Voltage - Input (Min)
85 V
|
Voltage - Input (Max)
305 V
|
Internal Switch
Yes
|
IC Package
SO-8C
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Product Type
IC
|
Control Scheme
Primary-side
|
Duty Cycle (Max)
0.69 %
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Output Profile
CV
|
Voltage - Start-up
18.00V
|
Temperature - Operating (Min)
-40 °C
|
Temperature - Operating (Max)
150 °C
|
MSL Rating
3
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|
|
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Data Sheet
View Data Sheet
|
Output Power (Max) - Open Frame, 230V
10.0 W
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Output Power (Max) - Open Frame, Univ
6.0 W
|
Current - Output (Max, CCM, 230V)
170 mA
|
Current - Output (Max, CCM, Univ)
170 mA
|
Current - Output (Max, MDCM, 230V)
120 mA
|
Current - Output (Max, MDCM, Univ)
120 mA
|
|
|
|
RDK Available
|
Auto-Restart & Overvoltage Response
Auto-restart, Hysteretic
|
Over-Temperature Response
Auto-restart, Hysteretic
|
Topology
Buck-Boost, Flyback, Tapped Buck
|
Protection Features
Input Overvoltage, Output Open Loop, Output Overload, Output Overvoltage, Output Short Circuit, Overtemperature
|
Breakdown Voltage
725 V
|
Switching Frequency (max)
66 kHz
|
Voltage - Input (Min)
85 V
|
Voltage - Input (Max)
305 V
|
Internal Switch
Yes
|
IC Package
SO-8C
|
Product Type
IC
|
Control Scheme
Primary-side
|
Duty Cycle (Max)
0.69 %
|
Output Profile
CV
|
Voltage - Start-up
18.00V
|
Temperature - Operating (Min)
-40 °C
|
Temperature - Operating (Max)
150 °C
|
MSL Rating
3
|
|
|
|
Data Sheet
View Data Sheet
|
Output Power (Max) - Open Frame, 230V
18.0 W
|
Output Power (Max) - Open Frame, Univ
12.0 W
|
Current - Output (Max, CCM, 230V)
360 mA
|
Current - Output (Max, CCM, Univ)
360 mA
|
Current - Output (Max, MDCM, 230V)
225 mA
|
Current - Output (Max, MDCM, Univ)
225 mA
|
|
|
|
RDK Available
|
Auto-Restart & Overvoltage Response
Auto-restart, Hysteretic
|
Over-Temperature Response
Auto-restart, Hysteretic
|
Topology
Buck-Boost, Flyback, Tapped Buck
|
Protection Features
Input Overvoltage, Output Open Loop, Output Overload, Output Overvoltage, Output Short Circuit, Overtemperature
|
Breakdown Voltage
725 V
|
Switching Frequency (max)
66 kHz
|
Voltage - Input (Min)
85 V
|
Voltage - Input (Max)
305 V
|
Internal Switch
Yes
|
IC Package
SO-8C
|
Product Type
IC
|
Control Scheme
Primary-side
|
Duty Cycle (Max)
0.69 %
|
Output Profile
CV
|
Voltage - Start-up
18.00V
|
Temperature - Operating (Min)
-40 °C
|
Temperature - Operating (Max)
150 °C
|
MSL Rating
3
|
|
|
|
Data Sheet
View Data Sheet
|
Output Power (Max) - Open Frame, 230V
18.0 W
|
Output Power (Max) - Open Frame, Univ
12.0 W
|
Current - Output (Max, CCM, 230V)
575 mA
|
Current - Output (Max, CCM, Univ)
575 mA
|
Current - Output (Max, MDCM, 230V)
360 mA
|
Current - Output (Max, MDCM, Univ)
360 mA
|
|
|
|
RDK Available
|
Auto-Restart & Overvoltage Response
Auto-restart, Hysteretic
|
Over-Temperature Response
Auto-restart, Hysteretic
|
Topology
Buck-Boost, Flyback, Tapped Buck
|
Protection Features
Input Overvoltage, Output Open Loop, Output Overload, Output Overvoltage, Output Short Circuit, Overtemperature
|
Breakdown Voltage
725 V
|
Switching Frequency (max)
66 kHz
|
Voltage - Input (Min)
85 V
|
Voltage - Input (Max)
305 V
|
Internal Switch
Yes
|
IC Package
SO-8C
|
Product Type
IC
|
Control Scheme
Primary-side
|
Duty Cycle (Max)
0.69 %
|
Output Profile
CV
|
Voltage - Start-up
18.00V
|
Temperature - Operating (Min)
-40 °C
|
Temperature - Operating (Max)
150 °C
|
MSL Rating
3
|
|
|
|
Data Sheet
View Data Sheet
|
Output Power (Max) - Open Frame, 230V
5.0 W
|
Output Power (Max) - Open Frame, Univ
3.0 W
|
Current - Output (Max, CCM, 230V)
80 mA
|
Current - Output (Max, CCM, Univ)
80 mA
|
Current - Output (Max, MDCM, 230V)
63 mA
|
Current - Output (Max, MDCM, Univ)
63 mA
|
Integrated X-Capacitor Discharge
Yes
|
Max X Capacitance
100 nF to 6 µF
|
Total Series Resistance
7.5 MΩ to 142 kΩ
|
RDK Available
|
Auto-Restart & Overvoltage Response
Auto-restart, Hysteretic
|
Over-Temperature Response
Auto-restart, Hysteretic
|
Topology
Buck-Boost, Flyback, Tapped Buck
|
Protection Features
Input Overvoltage, Output Open Loop, Output Overload, Output Overvoltage, Output Short Circuit, Overtemperature
|
Breakdown Voltage
725 V
|
Switching Frequency (max)
66 kHz
|
Voltage - Input (Min)
85 V
|
Voltage - Input (Max)
305 V
|
Internal Switch
Yes
|
IC Package
SO-8C
|
Product Type
IC
|
Control Scheme
Primary-side
|
Duty Cycle (Max)
0.69 %
|
Output Profile
CV
|
Voltage - Start-up
18.00V
|
Temperature - Operating (Min)
-40 °C
|
Temperature - Operating (Max)
150 °C
|
MSL Rating
3
|
|
|
|
Data Sheet
View Data Sheet
|
Output Power (Max) - Open Frame, 230V
10.0 W
|
Output Power (Max) - Open Frame, Univ
6.0 W
|
Current - Output (Max, CCM, 230V)
170 mA
|
Current - Output (Max, CCM, Univ)
170 mA
|
Current - Output (Max, MDCM, 230V)
120 mA
|
Current - Output (Max, MDCM, Univ)
120 mA
|
Integrated X-Capacitor Discharge
Yes
|
Max X Capacitance
100 nF to 6 µF
|
Total Series Resistance
7.5 MΩ to 142 kΩ
|
RDK Available
|
Auto-Restart & Overvoltage Response
Auto-restart, Hysteretic
|
Over-Temperature Response
Auto-restart, Hysteretic
|
Topology
Buck-Boost, Flyback, Tapped Buck
|
Protection Features
Input Overvoltage, Output Open Loop, Output Overload, Output Overvoltage, Output Short Circuit, Overtemperature
|
Breakdown Voltage
725 V
|
Switching Frequency (max)
66 kHz
|
Voltage - Input (Min)
85 V
|
Voltage - Input (Max)
305 V
|
Internal Switch
Yes
|
IC Package
SO-8C
|
Product Type
IC
|
Control Scheme
Primary-side
|
Duty Cycle (Max)
0.69 %
|
Output Profile
CV
|
Voltage - Start-up
18.00V
|
Temperature - Operating (Min)
-40 °C
|
Temperature - Operating (Max)
150 °C
|
MSL Rating
3
|
|
|
|
Data Sheet
View Data Sheet
|
Output Power (Max) - Open Frame, 230V
18.0 W
|
Output Power (Max) - Open Frame, Univ
12.0 W
|
Current - Output (Max, CCM, 230V)
360 mA
|
Current - Output (Max, CCM, Univ)
360 mA
|
Current - Output (Max, MDCM, 230V)
225 mA
|
Current - Output (Max, MDCM, Univ)
225 mA
|
Integrated X-Capacitor Discharge
Yes
|
Max X Capacitance
100 nF to 6 µF
|
Total Series Resistance
7.5 MΩ to 142 kΩ
|
RDK Available
|
Auto-Restart & Overvoltage Response
Auto-restart, Hysteretic
|
Over-Temperature Response
Auto-restart, Hysteretic
|
Topology
Buck-Boost, Flyback, Tapped Buck
|
Protection Features
Input Overvoltage, Output Open Loop, Output Overload, Output Overvoltage, Output Short Circuit, Overtemperature
|
Breakdown Voltage
725 V
|
Switching Frequency (max)
66 kHz
|
Voltage - Input (Min)
85 V
|
Voltage - Input (Max)
305 V
|
Internal Switch
Yes
|
IC Package
SO-8C
|
Product Type
IC
|
Control Scheme
Primary-side
|
Duty Cycle (Max)
0.69 %
|
Output Profile
CV
|
Voltage - Start-up
18.00V
|
Temperature - Operating (Min)
-40 °C
|
Temperature - Operating (Max)
150 °C
|
MSL Rating
3
|
|
|
|
Data Sheet
View Data Sheet
|
Output Power (Max) - Open Frame, 230V
18.0 W
|
Output Power (Max) - Open Frame, Univ
12.0 W
|
Current - Output (Max, CCM, 230V)
575 mA
|
Current - Output (Max, CCM, Univ)
575 mA
|
Current - Output (Max, MDCM, 230V)
360 mA
|
Current - Output (Max, MDCM, Univ)
360 mA
|
Integrated X-Capacitor Discharge
Yes
|
Max X Capacitance
100 nF to 6 µF
|
Total Series Resistance
7.5 MΩ to 142 kΩ
|
RDK Available
|
Auto-Restart & Overvoltage Response
Auto-restart, Hysteretic
|
Over-Temperature Response
Auto-restart, Hysteretic
|
Topology
Buck-Boost, Flyback, Tapped Buck
|
Protection Features
Input Overvoltage, Output Open Loop, Output Overload, Output Overvoltage, Output Short Circuit, Overtemperature
|
Breakdown Voltage
725 V
|
Switching Frequency (max)
66 kHz
|
Voltage - Input (Min)
85 V
|
Voltage - Input (Max)
305 V
|
Internal Switch
Yes
|
IC Package
SO-8C
|
Product Type
IC
|
Control Scheme
Primary-side
|
Duty Cycle (Max)
0.69 %
|
Output Profile
CV
|
Voltage - Start-up
18.00V
|
Temperature - Operating (Min)
-40 °C
|
Temperature - Operating (Max)
150 °C
|
MSL Rating
3
|
|
Product Details
The LinkSwitch-TNZ family of ICs combine power conversion with lossless generation of AC zero crossing signal used typically for system clock and timing functions. Designs using the highly integrated LinkSwitch-TNZ ICs are more flexible than discrete implementations reducing component count by 40% or higher. Besides enabling 80+ efficiencies in low power Flyback designs, very low consumption at light loads enabled by On/Off control allow for more functions (display, wireless connectivity, sensors etc.) to be active during system standby. The device family supports buck, buck-boost and flyback converter topologies.
Each device incorporates a 725 V power MOSFET, oscillator, a high-voltage switched current source for self-biasing, frequency jittering, fast (cycle-by-cycle) current limit, hysteretic thermal shutdown, and output and input overvoltage protection circuitry onto a monolithic IC.
LinkSwitch-TNZ ICs consume <100 µA current in standby resulting in power supply designs that can meet no-load and standby regulations worldwide. MOSFET current limit modes can be selected through the BYPASS pin capacitor value. The high current limit level provides maximum continuous output current while the low level permits using very low-cost and small surface mount inductors. A full suite of protection features enables safe and reliable power supplies protecting the device and the system against input and output overvoltage faults, device over-temperature faults, lost regulation, and power supply output overload or short-circuit faults.
Product Highlights
Highest Performance and Design Flexibility
- Lossless zero cross signal generation
- Supports buck, buck-boost and flyback topologies
- Enables ±3% regulation across line and load
- Selectable device current limit
- 66 kHz operation with accurate current limit
- Allows the use of low-cost off-the-shelf inductors
- Reduces size and cost of magnetics and output capacitor - Frequency jittering reduces EMI filter complexity
- X capacitor discharge function (LNK331x only)
Enhanced Safety and Reliability Features
- Soft-start limits system component stress at start-up
- Auto-restart for short-circuit and open loop faults
- Output overvoltage protection (OVP)
- Line input overvoltage protection (OVL)
- Hysteretic over-temperature protection (OTP)
- Extended creepage between DRAIN pin and all other pins improves field reliability
- 725 V MOSFET rating for excellent surge withstand
EcoSmart– Extremely Energy Efficient
- IC standby supply current <100 µA
- On/Off control provides constant efficiency over a wide load range
- Easily meets all global energy efficiency regulations
- No-load consumption <30 mW with external bias
