Overview
The ADP1055ACPZ-RL, produced by Analog Devices Inc., is a flexible and feature-rich digital secondary side controller. It is designed to target ac-to-dc and isolated dc-to-dc secondary side applications, offering minimal component count, maximum flexibility, and reduced design time. This controller integrates various advanced features such as differential remote voltage sense, primary and secondary side current sense, pulse-width modulation (PWM) generation, and frequency synchronization. It also includes redundant overvoltage protection (OVP), current sharing, and extensive programmable protection circuits. The ADP1055 is ideal for applications requiring high reliability and comprehensive system management.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Operating Supply Voltage | 3 V to 3.6 V | V |
| Operating Temperature Range | -40°C to +125°C | °C |
| Input Voltage Range | 0 V to 1.6 V | V |
| Package Type | 32-Lead Lead Frame Chip Scale Package (LFCSP_WQ) | |
| Pin Count | 32 | |
| Peak Reflow Temperature | 260°C | °C |
| Time@Peak Reflow Temperature-Max | 30 seconds | s |
| ADC Clock Frequency | 1.56 MHz | Hz |
| ADC Update Rate | 10.5 ms | ms |
Key Features
- Digital control loop with PID and additional pole or zero configurability
- Programmable loop filters (CCM, DCM, low/normal temperature)
- Fast line voltage feedforward and adaptive dead time compensation
- Remote voltage sense and redundant programmable OVP
- Primary and secondary side cycle-by-cycle fast protection and secondary side averaged reverse current protection
- Synchronous rectifier control for improved efficiency in light load mode
- Nonlinear gain for faster transient response from DCM to CCM
- Frequency synchronization and soft start and soft stop functionality
- Average and peak constant current mode
- External PN junction temperature sensing and 4 GPIOs (2 configurable as active clamp snubber PWMs)
- Extended black box data recorder for fault recording and user trimming on input and output voltages and currents
- Digital current sharing and comprehensive GUI for easy design of loop filter characteristics and programming of safety features
- Industry-standard PMBus interface for monitoring and system test functions
Applications
- Isolated dc-to-dc power supplies and modules
- Redundant power supply systems
- Ac-to-dc and isolated dc-to-dc secondary side applications
Q & A
- What is the operating supply voltage range of the ADP1055ACPZ-RL?
The operating supply voltage range is 3 V to 3.6 V.
- What is the operating temperature range of the ADP1055ACPZ-RL?
The operating temperature range is -40°C to +125°C.
- What type of package does the ADP1055ACPZ-RL come in?
The ADP1055ACPZ-RL comes in a 32-Lead Lead Frame Chip Scale Package (LFCSP_WQ).
- What are some of the key protection features of the ADP1055ACPZ-RL?
The key protection features include overcurrent (OCP), overvoltage (OVP) limiting, undervoltage lockout (UVLO), and external overtemperature (OTP) protection.
- Does the ADP1055ACPZ-RL support frequency synchronization?
Yes, it supports frequency synchronization.
- What is the purpose of the PMBus interface in the ADP1055ACPZ-RL?
The PMBus interface provides access to many monitoring and system test functions.
- Can the ADP1055ACPZ-RL be used in redundant power supply systems?
Yes, it is suitable for redundant power supply systems.
- What is the ADC clock frequency of the ADP1055ACPZ-RL?
The ADC clock frequency is 1.56 MHz.
- Does the ADP1055ACPZ-RL support digital current sharing?
Yes, it supports digital current sharing.
- What is the peak reflow temperature for the ADP1055ACPZ-RL during soldering?
The peak reflow temperature is 260°C.
