Digital Controller
Data Sheet
Digital Controller for Isolated Power Supply with PMBus Interface
ADP1051
FEATURES
GENERAL DESCRIPTION
Ve...
Description
Data Sheet
Digital Controller for Isolated Power Supply with PMBus Interface
ADP1051
FEATURES
GENERAL DESCRIPTION
Versatile digital voltage mode controller High speed input voltage feedforward control 6 pulse-width modulation (PWM) logic outputs with 625 ps
resolution Switching frequency: 49 kHz to 625 kHz Frequency synchronization as master and slave device Multiple energy saving modes Adaptive dead time compensation for efficiency optimization Low device power consumption: 100 mW typical Direct parallel control for power supplies without OR’ing devices
Accurate droop current share Pre-bias startup Reverse current protection Conditional overvoltage protection Extensive fault detection and protection PMBus compliant Graphical user interface (GUI) for ease of programming On-board EEPROM for programming and data storage Available in a 24-lead, 4 mm × 4 mm LFCSP −40°C to +125°C operating temperature
APPLICATIONS
High density isolated dc-to-dc power supplies Intermediate bus converters High availability parallel power systems
Server, storage, industrial, networking, and communications infrastructure
The ADP1051 is an advanced digital controller with a PMBusTM interface targeting high density, high efficiency dc-to-dc power conversion. This controller implements voltage mode control with high speed, input line feedforward for enhanced transient and improved noise performance. The ADP1051 has six programmable pulse-width modulation (PWM) outputs capable of controlling most hig...
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