ADP1055

Data Sheet Digital Controller for Power Supply Applications with PMBus Interface ADP1055 FEATURES −40°C to +125°C operation PMBus Revision 1.2 compliant with PEC and extended manufacturer specific commands 32-bit password protection with command masking 64 address selections (16 base addresses, expandable to 64) 6 PWM control signals, 625 ps resolution Frequency from 48 kHz to 1 MHz Duty cycle double update rate Digital control loop (PID + additional pole or zero configurability) Programmable loop filters (CCM, DCM, low/normal temperature) Fast line voltage feedforward Adaptive dead time compensation for improved efficiency Remote voltage sense Redundant programmable OVP Current sense Primary side cycle-by-cycle fast protection Secondary side cycle-by-cycle fast overcurrent protection Secondary side averaged reverse current protection using diode emulation mode with fixed debounce Synchronous rectifier control for improved efficiency in light load mode Nonlinear gain for faster transient response from DCM to CCM Frequency synchronization Soft start and soft stop functionality Average and peak constant current mode External PN junction temperature sensing 4 GPIOs (2 GPIOs configurable as active clamp snubber PWMs) Extended black box data recorder for fault recording User trimming on input and output voltages and currents Digital current sharing APPLICATIONS Isolated dc-to-dc power supplies and modules Redundant power supply systems GENERAL DESCRIPTION The ADP1055 is a flexi...