ADP1055 Series

Digital Controller for Power Supply Applications with PMBusInterface

Catalog

Digital Controller for Power Supply Applications with PMBusInterface

Part	Mounting Type	Supplier Device Package	Operating Temperature [Max]	Operating Temperature [Min]	Voltage - Supply [Max]	Voltage - Supply [Min]	Voltage - Input [Min]	Voltage - Input [Max]	Applications	Package / Case
Analog Devices ADP1055ACPZ-RL	Surface Mount	32-LFCSP (5x5)	125 °C	-40 °C	3.6 V	3 V	0 V	1.6 V	Power Supply Controller/Monitor	32-WFQFN Exposed Pad CSP

Catalog

Digital Controller for Power Supply Applications with PMBusInterface

Key Features

• −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

Description

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 monitoring and system test functions. The ADP1055 is available in a 32-lead LFCSP and operates from a single 3.3 V supply.APPLICATIONSIsolated dc-to-dc power supplies and modulesRedundant power supply systems