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LinkSwitch-TNZ

Energy Efficient Off-line Switcher IC with Best-in-Class Light Load Efficiency and Lossless AC Zero-Cross Detection

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Product Parts Table
Product
Data Sheet
Output Power (Max) - Open Frame, 230V
Output Power (Max) - Open Frame, Univ
Current - Output (Max, CCM, 230V)
Current - Output (Max, CCM, Univ)
Current - Output (Max, MDCM, 230V)
Current - Output (Max, MDCM, Univ)
Auto-Restart & Overvoltage Response
Over-Temperature Response
Topology
Protection Features
Total Series Resistance
Max X Capacitance
Breakdown Voltage
Switching Frequency (max)
Voltage - Input (Min)
Voltage - Input (Max)
Internal Switch
IC Package
Product Type
Control Scheme
Duty Cycle (Max)
Output Profile
Voltage - Start-up
Temperature - Operating (Min)
Temperature - Operating (Max)
MSL Rating
RDK Available
Data Sheet View PDF
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
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
RDK Available
Data Sheet View PDF
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
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
RDK Available
Data Sheet View PDF
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
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
RDK Available
Data Sheet View PDF
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
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
RDK Available
Data Sheet View PDF
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
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
Total Series Resistance 7.5 MΩ to 142 kΩ
Max X Capacitance 100 nF to 6 µF
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
RDK Available
Data Sheet View PDF
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
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
Total Series Resistance 7.5 MΩ to 142 kΩ
Max X Capacitance 100 nF to 6 µF
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
RDK Available
Data Sheet View PDF
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
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
Total Series Resistance 7.5 MΩ to 142 kΩ
Max X Capacitance 100 nF to 6 µF
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
RDK Available
Data Sheet View PDF
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
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
Total Series Resistance 7.5 MΩ to 142 kΩ
Max X Capacitance 100 nF to 6 µF
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
RDK Available

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