Product Details
●The ADP1055 is a flexible, feature-rich digital secondary side controller that targets ac-to-dc and isolated dc-to-dc secondary side applications. The ADP1055 is optimized for minimal component count, maximum flexibility, and minimum design time. Features include differential remote voltage sense, primary and secondary side current sense, pulse-width modulation (PWM) generation, frequency synchronization, redundant OVP, and current sharing. The control loop digital filter and compensation terms are integrated and can be programmed over the PMBus™ interface. Programmable protection features include overcurrent (OCP), overvoltage (OVP) limiting, undervoltage lockout (UVLO), and external overtemperature (OTP).
●The built-in EEPROM provides extensive programming of the integrated loop filter, PWM signal timing, inrush current, and soft start timing and sequencing. Reliability is improved through a built-in checksum and programmable protection circuits.
●A comprehensive GUI is provided for easy design of loop filter characteristics and programming of the safety features. The industry-standard PMBus provides access to the many moni-toring and system test functions. The ADP1055 is available in a 32-lead LFCSP and operates from a single 3.3 V supply.
●Applications
● Isolated dc-to-dc power supplies and modules
● Redundant power supply systems
●### Features and Benefits
● −40°C to +125°C operation with EEPROM data retention of 15 years at 125°C
● PMBus Revision 1.2 compliant
● 32-bit password protection with command masking
● 64 address selections (16 base addresses, expandable to 64)
● 6 PWM control signals, 625 ps resolution
● Duty cycle double update rate
● Digital control loop (PID + additional pole or zero configurability)
● Programmable loop filters (CCM, DCM, low/normal temperature)
● 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)
● Fast line voltage feedforward
● Adaptive dead time compensation for improved efficiency
● Extended black box data recorder for fault recording
● See datasheet for additional features
