Analog Devices Inc. LT8392 60V Synch 4-Switch Buck-Boost Controllers
Analog Devices Inc. LT8392 60V Synchronous 4-Switch Buck-Boost Controller with Spread Spectrum regulates output voltage, input, or output current from input voltage above, below, or equal to the output voltage. The LT8392 offers a proprietary peak-buck peak-boost current mode control scheme that allows adjustable, synchronizable 150kHz to 650kHz fixed-frequency operation or internal ±15% triangle spread-spectrum operation for low EMI.
The ADI LT8392 Buck-Boost Controllers feature a 3V to 60V input voltage range, 1V to 60V output voltage capability, and seamless low noise transitions between operation regions. The LT8392 is ideal for the voltage regulator, battery, and super-capacitor charger applications in automotive, industrial, telecom, and even battery-powered systems.
Additionally, the LT8392 provides input or output current monitor and power good flag. The fault protection function detects output short-circuit condition, during which the LT8392 retries, latches off, or keeps running.
Features
- 4-Switch single inductor architecture allows VIN above, below or equal to VOUT
- Up to 98% efficiency
- Proprietary peak-buck peak-boost current mode
- 3V (Need EXTVCC ≥ 4.5V) to 60V wide VIN range
- ±1.5% Output voltage accuracy to 1V ≤ VOUT ≤ 60V
- ±4% Input or output current accuracy with monitor
- Spread spectrum frequency modulation for low EMI
- Integrated bootstrap diodes
- 150kHz to 650kHz Adjustable and synchronizable
- VOUT Disconnected from VIN during shutdown
- Available in 28-Lead TSSOP with exposed pad and 28-lead QFN (4mm × 5mm)
Applications
- Automotive
- Industrial
- Telecom systems
- High frequency battery-powered system
Associated Demo Circuit
Analog Devices Inc. LT8392 demobord DC2626A
Toont de hoge stroomcapaciteit van de LT8392 60 V synchrone 4-schakelaars buck-boost-controller.
Typical application
4-Switch Buck-Boost Controller Layout for Low Emissions
Automotive application circuits must meet strict EMI standards to avoid interfering with broadcast and mobile service frequency bands so careful layout is imperative.