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 voltage regulator, battery, and super-capacitor charger applications in automotive, industrial, telecom, and even battery-powered systems.
Additionally, the LT8392 provides an input or output current monitor and a 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/-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
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.
Associated Demo Circuit
Analog Devices Inc. Placa de demostración DC2626A LT8392
Demuestra la capacidad de alta potencia del controlador reductor-elevador sincrónico de 4 conmutadores de 60 V LT8392.