1 Features

4V to 18V input voltage without external bias
2.7V to 18V input voltage with external bias
0.4V to 5.5V output voltage
Supports 35A single-phase or 2 ×, 3 ×, or 4 × stacked configurations
Rds_{on_HS} = 3.3mΩ, Rds_{on_LS} = 1mΩ
400kHz to 2MHz operating frequency (four discrete settings through pinstrap, additional settings through PMBus)
PMBus® programmability
- Revision 1.5 Compliant with PASSKEY security feature
- Input voltage, output voltage, output current, temperature telemetry
- Programmable overcurrent, overvoltage, undervoltage, overtemperature protections
- Includes single command write function in stacked configuration
- Extended write protection feature
- Non-volatile memory to store configuration settings
Two methods for programming the output voltage
- Internal resistor divider (discrete settings), with boot-up voltage selected by pin strapping
- External resistor divider (continuous settings), with boot-up voltage selected by VBOOT field
Precision voltage reference and differential remote sense for high output accuracy
- +/– 0.5% DAC accuracy from 0°C to 85°C junction
- +/– 1% VOUT tolerance from –40°C to 125°C junction
Selectable FCCM/DCM in single phase only
Start-up without PMBus communication through pin strapping
Safe start-up into prebiased output
Programmable soft-start time from 0.5ms to 16ms
Programmable soft-stop time from 0.5ms to 4ms
D-CAP4 control topology with fast transient response, supporting all ceramic output capacitors
Programmable internal loop compensation
Selectable cycle-by-cycle valley current limit
Open-drain power-good output