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Overview
| Topology | Push-Pull Converter symmetrical isolated |
| Input voltage | 2.25-5.5 V |
| Switching frequency | 100-1600 kHz |
| Output 1 | 16 V / 1.5 A |
| IC revision | 00 |
Description
This application note gives out information on how to make a compact-design for a combination of signal and power isolation. There are several important points to achieve a proper design for isolation power supply that will be discussed in this app note. The board contains three independent lanes that show transformer and component selection for different requirements.
Features
- Push-pull driver for transformers
- Wide input voltage range: 2.25 V to 5.5 V
- High output drive: 1 A at 5 V supply
- Low RON 0.25 Ω max at 4.5 V supply
- Ultra-low EMI
- Spread spectrum clocking
- Precision internal oscillator options: 160 kHz (SN6505A) and 420 kHz (SN6505B)
- Synchronization of multiple devices with external clock input
- Slew-rate control
- 1.7 A Current-limit
- Low shutdown current: <1 µA
- Thermal shutdown
- Wide temperature range: –55°C to 125°C
- Small 6-Pin SOT23 (DBV) package
- Soft-start to reduce In-rush current
More information
Products
Order Code | Datasheet | Downloads | Status | Product series | VIN | VOut1(V) | IOut1(mA) | Type of Insulation | fswitch(kHz) | ∫Udt(Vµs) | NPRI : NSEC | L(µH) | VT(V (AC)) | L(mm) | W(mm) | H(mm) | Mount | Samples | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | WE-PPTI Push-Pull Transformers, 3.3 V (DC), 23 V | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PPTI Push-Pull Transformers | Input Voltage 3.3 V (DC) | Output Voltage 123 V | Output Current 185 mA | Type of InsulationSupplementary | Switching Frequency 200 - 600 | Voltage-µSecond15 Vµs | Turns Ratio1:7 | Inductance200 µH | Insulation Test Voltage2500 V (AC) | Length8.3 mm | Width14.75 mm | Height4.2 mm | MountSMT | |||
| WE-PPTI Push-Pull Transformers, 3.3 V (DC), 5 V | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PPTI Push-Pull Transformers | Input Voltage 3.3 V (DC) | Output Voltage 15 V | Output Current 1700 mA | Type of InsulationSupplementary | Switching Frequency 200 - 600 | Voltage-µSecond15 Vµs | Turns Ratio1:1.67 | Inductance200 µH | Insulation Test Voltage2500 V (AC) | Length8.3 mm | Width14.75 mm | Height4.2 mm | MountSMT | |||
| WE-PPTI Push-Pull Transformers, 3.3 V (DC), 12 V | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PPTI Push-Pull Transformers | Input Voltage 3.3 V (DC) | Output Voltage 112 V | Output Current 1165 mA | Type of InsulationSupplementary | Switching Frequency 200 - 600 | Voltage-µSecond15 Vµs | Turns Ratio1:4 | Inductance200 µH | Insulation Test Voltage2500 V (AC) | Length8.3 mm | Width14.75 mm | Height4.2 mm | MountSMT | |||
| WE-PPTI Push-Pull Transformers, 3.3 V (DC), 20 V | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PPTI Push-Pull Transformers | Input Voltage 3.3 V (DC) | Output Voltage 120 V | Output Current 1125 mA | Type of InsulationSupplementary | Switching Frequency 200 - 600 | Voltage-µSecond15 Vµs | Turns Ratio1:6.17 | Inductance200 µH | Insulation Test Voltage2500 V (AC) | Length8.3 mm | Width14.75 mm | Height4.2 mm | MountSMT | |||
| WE-PPTI Push-Pull Transformers, 5 V (DC), 12 V | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PPTI Push-Pull Transformers | Input Voltage 5 V (DC) | Output Voltage 112 V | Output Current 1380 mA | Type of InsulationSupplementary | Switching Frequency 200 - 600 | Voltage-µSecond15 Vµs | Turns Ratio1:2.5 | Inductance200 µH | Insulation Test Voltage2500 V (AC) | Length8.3 mm | Width14.75 mm | Height4.2 mm | MountSMT | |||
| WE-PPTI Push-Pull Transformers, 5 V (DC), 23 V | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PPTI Push-Pull Transformers | Input Voltage 5 V (DC) | Output Voltage 123 V | Output Current 1180 mA | Type of InsulationSupplementary | Switching Frequency 200 - 600 | Voltage-µSecond15 Vµs | Turns Ratio1:4.67 | Inductance200 µH | Insulation Test Voltage2500 V (AC) | Length8.3 mm | Width14.75 mm | Height4.2 mm | MountSMT | |||
| WE-PPTI Push-Pull Transformers, 5 V (DC), 5 V | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PPTI Push-Pull Transformers | Input Voltage 5 V (DC) | Output Voltage 15 V | Output Current 1950 mA | Type of InsulationSupplementary | Switching Frequency 200 - 400 | Voltage-µSecond15 Vµs | Turns Ratio1:1.17 | Inductance200 µH | Insulation Test Voltage2500 V (AC) | Length8.3 mm | Width14.75 mm | Height4.2 mm | MountSMT | |||
| WE-PPTI Push-Pull Transformers, 5 V (DC), 3.3 V | Status Activei| Production is active. Expected lifetime: >10 years. | Product seriesWE-PPTI Push-Pull Transformers | Input Voltage 5 V (DC) | Output Voltage 13.3 V | Output Current 11100 mA | Type of InsulationSupplementary | Switching Frequency 200 - 600 | Voltage-µSecond15 Vµs | Turns Ratio1.2:1 | Inductance200 µH | Insulation Test Voltage2500 V (AC) | Length8.3 mm | Width14.75 mm | Height4.2 mm | MountSMT |