Analog Devices Inc. LTC7880 Step-Up Controllers
Analog Devices Inc. LTC7880 Step-Up Controllers are dual PolyPhase®, DC/DC synchronous, switching regulator controllers with an I2C-based PMBus compliant serial interface. The LTC7880 utilizes a constant-frequency, current-mode architecture, with high voltage input and output capability along with programmable loop compensation.
The LTC7880 is supported by the LTpowerPlay™ software development tool with a graphical user interface (GUI). The device can program switching frequency, output voltage, and device address by both digital interfaces as well as external configuration resistors. Parameters can be set via the digital interface or stored in EEPROM. The LTC7880 gate drive can be programmed from 6.3V to 9V to maximize efficiency. Both outputs have an independent power good indicator and FAULT function.
Features
- PMBus/I2C compliant serial interface
- Telemetry read-back includes input and output voltage and current, temperature, and faults
- Programmable voltage, current limit, digital soft-start/stop, sequencing, margining, OV/UV/OC, frequency, and control loop compensation
- Output error of less than ±0.5% over temperature
- Integrated 16-Bit ADC and 12-Bit DAC
- Internal EEPROM with ECC and fault logging
- Integrated N-Channel MOSFET gate drivers
- Power conversion
- Wide input voltage range of 5Vto 40V
- Operates down to 2.5V after start-up
- Up to 60V VOUT0, VOUT1 range
- Analog current mode control
- Accurate PolyPhase® current sharing for up to 6 phases (50kHz to 500kHz)
- Available in a 52-Lead (7mm× 8mm) QFN Package
Applications
- Automotive always-on and start-stop systems
- Industrial and point of load applications
Typical Application
Related Development Tool
Analog Devices Inc. DC2728 Demo Circuit for LTC7880
Demo circuit is a high voltage, dual output boost converter with 12V to 24V input range.
Publicado: 2019-12-02
| Actualizado: 2022-03-11