XRP7724 Datasheet, PDF (12/29 Pages) Exar Corporation – Quad Channel Digital PWM/PFM Programmable Power Management System

XRP7724
Quad Channel Digital PWM/PFM
Programmable Power Management System
FEATURES AND BENEFITS
Programmable Power Benefits
 Fully Configurable
 Output set point
 Feedback compensation
 Frequency set point
 Under voltage lock out
 Input voltage measurement
 Gate drive dead time
 Reduced Development Time
 Configurable and re-configurable for
different Vout, Iout, Cout, and Inductor
values
 No need to change external passives for a
new output specification.
 Higher integration and Reliability
 Many external circuits used in the past
can be eliminated significantly improving
reliability.
PowerArchitect™ 5.0 Design and
Configuration Software
 Wizard quickly generates a base design
 Calculates all configuration registers
 Projects can be saved and/or recalled
 GPIOs can be configured easily and
intuitively
 “Dashboard” Interface can be used for
real-time monitoring and debug
System Integration Capabilities
 Single supply operation
 I²C interface allows:
 Communication with a System Controller
or other Power Management devices for
optimized system function
 Access to modify or read internal
registers that control or monitor:
 Output Current
 Input and Output Voltage
 Soft-Start/Soft-Stop Time
 ‘Power Good’
 Part Temperature
 Enable/Disable Outputs
 Over Current
 Over Voltage
 Temperature Faults
 Adjusting fault limits and
disabling/enabling faults
 Packet Error Checking (PEC) on I²C
communication
 5 GPIO pins with a wide range of
configurability
 Fault reporting (including UVLO
Warn/Fault, OCP Warn/Fault, OVP,
Temperature, Soft-Start in progress,
Power Good, System Reset)
 Allows a Logic Level interface with other
non-digital IC’s or as logic inputs to other
devices
System Benefits
 Reliability is enhanced via communication
with the system controller which can obtain
real time data on an output voltage, input
voltage and current.
 System processors can communicate with
the XRP7724 directly to obtain data or
make adjustments to react to circuit
conditions
 A system process or could also be
configured to log and analyze operating
history, perform diagnostics and if required,
take the supply off-line after making other
system adjustments.
 Frequency and Synchronization
Capability
 Selectable switching frequency between
105kHz and 1.2MHz
 Main oscillator clock and DPWM clock can
be synchronized to external sources
 ‘Master’, ‘Slave’ and ‘Stand-alone’
Configurations are possible
 Internal MOSFET Drivers
 Internal FET drivers (4Ω/2Ω) per channel
 Built-In Automatic Dead-time adjustment
 30ns Rise and Fall times
 4 Independent SMPS channels and 2
LDOs in a 7x7mm TQFN
© 2012 Exar Corporation
12/29
Rev. 1.0.1