ADP1046A Series

Digital Controller for Isolated Power Supply Applications

Catalog

Digital Controller for Isolated Power Supply Applications

Part	Package / Case	Voltage - Supply [Max]	Voltage - Supply [Min]	Supplier Device Package	Voltage - Input [Min]	Voltage - Input [Max]	Mounting Type	Current - Supply	Operating Temperature [Max]	Operating Temperature [Min]	Applications	Grade	Utilized IC / Part	Type	Function	Supplied Contents	Contents	Secondary Attributes
Analog Devices ADP1046ACPZ-R7	32-WFQFN Exposed Pad CSP	3.6 V	3 V	32-LFCSP-WQ (5x5)	0 V	1.6 V	Surface Mount	20 mA	125 °C	-40 °C	Power Supplies
Analog Devices ADP1046AWACPZ-R7	32-WFQFN Exposed Pad CSP	3.6 V	3 V	32-LFCSP-WQ (5x5)	0 V	1.6 V	Surface Mount	20 mA	125 °C	-40 °C	Power Supplies	Automotive
Analog Devices ADP1046A-100-EVALZ													ADP1046A	Power Management	Power Supply Supervisor/Tracker/Sequencer	Board(s)	Board(s)
Analog Devices ADP1046-100-EVALZ													ADP1046	Power Management	Power Supply Supervisor/Tracker/Sequencer	Board(s)	Board(s)
Analog Devices ADP1046ADC1-EVALZ													ADP1046A	Power Management	Power Supply Supervisor/Tracker/Sequencer	Board(s)
Analog Devices ADP1046DC1-EVALZ													ADP1046	Power Management	Power Supply Supervisor/Tracker/Sequencer	Board(s)	Board(s)	I2C Interface(s)
Analog Devices ADP1046AACPZ-RL	32-WFQFN Exposed Pad CSP	3.6 V	3 V	32-LFCSP-WQ (5x5)	0 V	1.6 V	Surface Mount	20 mA	125 °C	-40 °C	Power Supplies

Catalog

Digital Controller for Isolated Power Supply Applications

Key Features

• Integrates all typical PWM controller functions7 PWM control signalsDigital control loopIntegrated programmable loop filtersProgrammable voltage line feedforwardDedicated soft start filterRemote and local voltage sensePrimary and secondary side current senseSynchronous rectifier controlCurrent sharingOrFET control

• 7 PWM control signals

• Digital control loop

• Integrated programmable loop filters

• Programmable voltage line feedforward

• Dedicated soft start filter

• Remote and local voltage sense

• Primary and secondary side current sense

• Synchronous rectifier control

• Current sharing

• OrFET control

• I2C interface

• Extensive fault detection and protection

• Extensive programming and telemetry

• Fast digital calibration

• User accessible EEPROM

• Qualified for automotive applications

• DownloadADP1046AW Automotive Data Sheet(pdf)

Description

The ADP1046A is a flexible, digital secondary side controller designed for ac-to-dc and isolated dc-to-dc secondary side applications. The ADP1046A is pin-compatible with the ADP1043A and offers several enhancements and new features, including voltage feedforward and improved loop response to maximize efficiency.The ADP1046A is optimized for minimal component count, maximum flexibility, and minimum design time. Features include local and remote voltage sense, primary and secondary side current sense, digital pulse-width modulation (PWM) generation, current sharing, and redundant OrFET control. The control loop digital filter and compensation terms are integrated and can be programmed over the I2C interface. Programmable protection features include overcurrent protection (OCP), over- voltage protection (OVP), undervoltage lockout (UVLO), and overtemperature protection (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 I2C bus provides access to the many monitoring and system test functions.The ADP1046A is available in a 32-lead LFCSP and operates from a single 3.3 V supply.APPLICATIONSAC-to-DC power suppliesIsolated dc-to-dc power suppliesRedundant power supply systemsServer, storage, network, and communications infrastructure