ED8101 Datasheet, PDF (1/23 Pages) Altera Corporation – Single-Rail PWM controller

Description
The ED8101 is a configurable true-digital single-
phase PWM controller for high-current, non-isolated
DC/DC supplies. It is optimally configured for use
with the Altera ET4040 40A Power Train.
The ED8101 integrates a digital control loop that is
optimized for maximum flexibility and stability as
well as load step and steady-state performance. In
addition, a rich set of protection functions is
provided. On-chip, non-volatile memory (NVM) and
an I²C^TM interface facilitate configuration.
The PC-based Altera ED81xx Power Designer
provides a user-friendly and easy-to-use interface
to the device for communication and configuration.
It can guide the user through the design of the
digital compensator and offers intuitive
configuration methods for additional features, such
as protection and sequencing.
Reference solutions are available complete with
layout recommendations, example circuit board
layouts, complete bill of materials and more.
Features
• Programmable digital control loop.
• Advanced, digital control techniques
• Improved transient response and noise immunity
• Protection features
• Over-current protection
• Over-voltage protection (VIN, VOUT)
• Under-voltage protection (VIN, VOUT)
• Overloaded startup
• Continuous retry (“hiccup”) mode for fault
conditions
• Fuse-based one-time programmable (OTP)
nonvolatile memory for improved reliability.
• Operation from a single 5V or 3.3V supply.
• Optional PMBus^TM address selection without
external resistors.
Enpirion^® Power Datasheet
ED8101 True Digital Single-Phase
Single-Rail PWM controller
Physical Characteristics
• Operation temperature: -40°C to +85°C
• V_OUT max: 5V
• Lead free (RoHS compliant) 24-pin QFN
package (4mm x 4mm)
Benefits
• Fast time-to-market using an off-the-shelf,
optimally configured controller and power train.
• Fast configuration and design flexibility.
• FPGA designer-friendly solution.
• Simplified monitoring for system power and
thermal management.
• Highest power density with smallest footprint.
• Higher energy efficiency across all output
loading conditions.
Applications
• FPGA Designs
• Single-Rail/Single-Phase supplies for FPGA’s,
Processors, ASIC’s, DSP’s, etc.
• Servers and Storage
• Base Stations
• Network Routers
• Industrial Applications
• Telecommunications
PWM
PWM
OFF#
4.5V – 14V
CIN
VIN
PGND
1.8V
VCC_GD
3.3V
PGND
VCC
VCC_GND
SW
PGND
INDUCTOR
COUT
VOUT
PHASE
BOOT
Figure 1: Simplified Applications Circuit
10030
May 30, 2014
www.altera.com/enpirion, Page 1
Rev A