High-Voltage Ideal Diode Controller with
Integrated CSA
MAX16170
The MAX16170 is available in a 4mm x 4mm x 0.75mm,
20-pin, side-wettable, TQFN package with an exposed
pad and operates over the automotive temperature
range of −40°C to +125°C.
General Description
The MAX16170, a high-voltage ideal diode controller,
offers full system-level protections for automotive
applications. The MAX16170 is designed to enhance
system safety, reliability, and performance with added
diagnostics, robust fault-recovery mode, and a high-
side, integrated current-sense amplifier (CSA). The
MAX16170 features dual-gate-driver topology that
supports common-drain configuration and protects
systems against reverse voltage, input overvoltage
(OV), undervoltage (UV), overcurrent, and thermal fault
conditions. During power-up, the device monitors the
health of the external power metal-oxide semiconductor
field effect transistors (MOSFETs) for open or short-
circuit conditions and asserts an open-drain output
(FETOK) when one or both power MOSFETs are
damaged. Additionally, the device offers an open-drain
fault output (FLT) that asserts low when there is a fault
condition.
Features and Benefits
•
•
AEC-Q100 Qualified for Automotive Applications
3V to 65V Operating Voltage Range
• Supports 12V/24V Battery Systems
•
•
•
•
−42V to +76V Input Protection Range
• Wider Transients Immunity
High-Side CSA
• Enables System Power-Level Measurement
Output Sensing
• Enables Fast Fault Recovery
30kHz Active Rectification
• Facilitates System Level Testing Per Automotive
Standard
During normal operation, the MAX16170 regulates the
voltage drop across the drain-to-source of MOSFET
(Q1) to 10mV to block DC flow to the battery in reverse
voltage fault condition. A resistor from a low-voltage
input (ILIM) to ground sets the overcurrent threshold.
•
•
•
Support ORing Application
Robust Fault-Recovery Mode
5µA Shutdown Mode Current
• Extends Battery Life
During sleep mode of operation, the device consumes
only 5uA (typ) while delivering 1mA (min) of current to
the load to support stand-by system operation. In
shutdown mode, the charge pump is disabled, and the
OV and UV resistive dividers are disconnected from the
battery through the TERM switch to lower the shutdown
supply current to 3µA (typ).
•
•
•
Resistor-Adjustable OCP Threshold
• Adds Design Flexibility
1mA (min) Sleep Mode Current Output
• Supports Standby Mode of Operation
FETOK/FLT Outputs
• Enhance System Diagnostics
Ordering Information appears at end of data sheet.
Applications
•
•
•
•
•
Automotive Power Systems
Network/Telecom Power Systems
RAID Systems
Servers
PoE Systems
19-101635; Rev 0; 1/24
© 2024 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners.