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Power Integrations INN3990CQ | Demoboard DER-953Q
100 W Output Automotive Power Supply for 400 V Systems Using InnoSwitchTM3-AQ INN3990CQ
Overview
| Topology | Flyback Converter |
| Input voltage | 150-400 V |
| Output 1 | 13.5 V / 7.35 A |
| IC revision | 1.0 |
Description
100 W flyback power supply for 400 V DC BEV automotive applications as a replacement for the 12 V lead-acid auxiliary battery, using 900 V PowiGaN-based InnoSwitch3-AQ (INN3990CQ)
Features
- Ultra-compact design for 400 VDC BEV automotive applications
- Low component count (only 66 components)1 design with a single 900 V power switch
- Full load operation from 150 VDC to 500 VDC input2
- Reinforced 500 V isolated transformer (IEC-60664-1 and IEC 60664-4 compliant)
- ≥92% full load efficiency across the input voltage range
- 1% output voltage load and line regulation
- Secondary-side regulated output
- Ambient operating temperature from -40 °C to 85 °C
- Complete fault protection, including output current limit and short-circuit protection
- Uses automotive-qualified AEC-Q surface mounted (SMD) components3
- Low profile, 22 mm height
Typical applications
- Power supplies for automotive subsystems such as the emergency
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