ISL28025 Datasheet, PDF (1/47 Pages) Intersil Corporation – Precision Digital Power Monitor with Real Time Alerts

DATASHEET
Precision Digital Power Monitor with Real Time Alerts
ISL28025
The ISL28025 is a bidirectional high-side and low-side digital
current sense and voltage monitor with a serial interface. The
device monitors power supply current and voltage and
provides the digital results along with calculated power. The
ISL28025 provides tight accuracy of less than 0.1% for both
voltage and current monitoring.
The V_CC power can either be externally supplied or internally
regulated, which allows the ISL28025 to handle a
common-mode input voltage range from 0V to 60V. The wide
range permits the device to handle telecom, automotive and
industrial applications with minimal external circuitry.
Fault indication includes Bus Voltage window and overcurrent
fast fault logic indication. The ISL28025 includes an integrated
temperature sensor for monitoring.
The ISL28025 serial interface is PMBus compatible and
operates down to 1.2V voltage. It draws an average current of
just 1.3mA and is available in the space saving 16 ball WLCSP
package. The parts operate across the full industrial
temperature range from -40°C to +125°C.
Related Literature
AN1955, “Design Ideas for Intersil Digital Power Monitors”
Features
• Bus voltage sense range . . . . . . . . . . . . . . . . . . . . . . 0V to 60V
• Voltage gain error. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.05%
• Current gain error. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.05%
• High or low (RTN) side sensing
• Bidirectional current sensing
• Auxiliary low voltage input channel
• ∆∑ADC, 16-bit native resolution
• Programmable averaging modes
• Internal 3.3V regulator
• Internal temperature sense
• Over/undervoltage and current fault monitoring with 500ns
detection delay
• I²C/SMBus/PMBus interface that handles 1.2V supply
• 55 I²C slave addresses
Applications
• Data processing servers
• DC power distribution
• Telecom equipment
• Portable communication equipment
• DC/DC, AC/DC converters
• Automotive power
• Many I²C ADC with alert applications
FROM 1.8V TO 5.5V
June 17, 2015
FN8388.3
PVIN
10µF
GND,
PGND
ISL9110
3.3V
BUCK/
BOOST
LX1
Lo
LX2
VOUT
PG
En ^FB
ISL28025
VBUS
VINP
VINM
3.3V
Vreg
ADC
16-Bit
AuxV
TEMP
SENSE
PMBus
REG
MAP
SMBALERT1
A0 A1 A2
MCU
GPIO/Int
SCL
SDA
VCC
GND
SCL
SDA
SMBALERT2
/ECLK
I2CVCC
FIGURE 1. TYPICAL APPLICATION CIRCUIT
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
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