LinkSwitch-TN2Q
Highly Energy Efficient Switcher IC for Automotive Use with Integrated System Level Protection for Low Component-Count Power Supplies
Applications
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Product
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Data Sheet
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RDK Available
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Current - Output (Max, CCM, Univ)
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Voltage Input (Min, DC)
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Voltage Input (Max, DC)
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Breakdown Voltage
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IC Package
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Topology
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Control Features
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Voltage - Output (Reflected)
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Protection Features
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Over-Temperature Response
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Control Scheme
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Switching Frequency (max)
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Voltage - Output (Max)
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Mounting Type
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Product Type
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Temperature - Operating (Max)
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Temperature - Operating (Min)
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Internal Switch
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Auto-Restart & Overvoltage Response
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Power - Output (Max, VDC)
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Output Profile
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MSL Rating
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Secondary Response
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Data Sheet
View Data Sheet
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RDK Available
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Current - Output (Max, CCM, Univ)
360 mA
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Voltage Input (Min, DC)
30V
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Voltage Input (Max, DC)
550V
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Breakdown Voltage
750 V
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IC Package
SMD-8C
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Topology
Buck, Buck-Boost, Flyback
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Control Features
Frequency Jittering, Soft Start, Auto-Restart/Latching Fault Response, On/Off Control, Selectable Current Limit
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Voltage - Output (Reflected)
15 V
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Protection Features
Input Overvoltage, Input Undervoltage, Output Open Loop, Output Overload, Output Overvoltage, Output Short Circuit, Overtemperature
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Over-Temperature Response
Hysteretic
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Control Scheme
Primary-side
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Switching Frequency (max)
74 kHz
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Voltage - Output (Max)
24 V
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Mounting Type
Surface Mount
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Product Type
IC
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Temperature - Operating (Max)
150 °C
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Temperature - Operating (Min)
-40 °C
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Internal Switch
Yes
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Auto-Restart & Overvoltage Response
Latch Off
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Power - Output (Max, VDC)
10 W
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Output Profile
CV
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MSL Rating
3
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Secondary Response
Auto-restart
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Data Sheet
View Data Sheet
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RDK Available
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Current - Output (Max, CCM, Univ)
850 mA
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Voltage Input (Min, DC)
30V
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Voltage Input (Max, DC)
550V
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Breakdown Voltage
750 V
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IC Package
SMD-8C
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Topology
Buck, Buck-Boost, Flyback
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Control Features
Frequency Jittering, Soft Start, Auto-Restart/Latching Fault Response, On/Off Control, Selectable Current Limit
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Voltage - Output (Reflected)
15 V
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Protection Features
Input Overvoltage, Input Undervoltage, Output Open Loop, Output Overload, Output Overvoltage, Output Short Circuit, Overtemperature
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Over-Temperature Response
Hysteretic
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Control Scheme
Primary-side
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Switching Frequency (max)
74 kHz
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Voltage - Output (Max)
24 V
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Mounting Type
Surface Mount
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Product Type
IC
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Temperature - Operating (Max)
150 °C
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Temperature - Operating (Min)
-40 °C
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Internal Switch
Yes
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Auto-Restart & Overvoltage Response
Latch Off
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Power - Output (Max, VDC)
10 W
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Output Profile
CV
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MSL Rating
3
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Secondary Response
Auto-restart
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Product Details
The LinkSwitch™-TN2 family of ICs for automotive power supplies provide significant reduction in component count compared to traditional discrete solutions making it highly reliable. The device family supports buck, buck-boost and flyback converter topologies. Each device incorporates a 750 V power MOSFET, oscillator, On/Off control, a high-voltage switched current source for self-biasing, frequency jittering, fast (cycle-by-cycle) current limit, hysteretic thermal shutdown, and output and overvoltage protection circuitry onto a monolithic IC.
LinkSwitch-TN2 ICs consume very little current in standby resulting in power supply designs that meet <50 mW no-load input at 400 VDC input. A full suite of protection features enable 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
- AEC-Q100 qualified
- Supports buck, buck-boost and flyback topologies
- Wide input voltage 30 VDC to 550 VDC
- Excellent load and line regulation
- 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
- Pin-out simplifies PCB heat sinking
- Fab and assembly are IATF16949 certified
Enhanced Safety and Reliability Features
- Auto-restart for short-circuit and open loop faults
- Output overvoltage protection (OVP)
- Hysteretic over-temperature protection (OTP)
- Extended creepage between DRAIN pin and all other pins improves field reliability
- 750 V MOSFET rating for excellent surge withstand
EcoSmart™– Extremely Energy Efficient
- 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 <50 mW
