1 Features

• Input operating voltage range: 9V to 80V

– 92V absolute maximum rating

– Withstands negative transient voltages

up to –5V at output

• Integrated FET with low ON-resistance

– RON = 3.65mΩ (typ)

• PMBus interface for telemetry, control,

configuration, and debug

– PIN/EIN/VIN/VOUT/IIN temperature and

fault monitoring

– VIN/VOUT monitoring accuracy: ±0.5%

– Programmable overcurrent protection

• Adjustable overcurrent threshold: 2A to 20A

• Programmable transient overcurrent timer

(OC_TIMER)

– Programmable slew rate control (dvdt)

– Programmable Power Good/fault/alert

indication

– Programmable overtemperature protection

– Non-volatile configuration memory for

configuration values

– Blackbox fault recording with option to store in

external EEPROM

• Fast trip response to severe overcurrent (shortcircuit)

events

• Precise analog load current monitoring (IMON)

– <3% error over 50%–100% of max current

• Small footprint: QFN 6mm × 5mm

– IPC9592B clearance for 60V

2 Applications

• Server and high performance computing

• Network interface cards

• Graphics and hardware accelerator cards

• Datacenter switches and routers

• Input hotswap and hotplug

• Fan trays

3 Description

The TPS1689x is an integrated high current circuit

protection and power management solution in a small

package. The device provides multiple protection

modes using very few external components and is a

robust defense against overloads, short circuits and

excessive inrush current. The integrated PMBus™

interface allows a host controller to monitor, control

and configure the system in real-time. Key system

parameters can be read back for remote telemetry.

Various protection/warning thresholds and coefficients

can be configured through PMBus or stored in nonvolatile

configuration memory. An integrated fast and

accurate sense analog load current monitor facilitates

predictive maintenance and advanced dynamic

platform power management such as Intel® PSYS

and PROCHOT to optimize server and data-center

performance. Blackbox fault recording feature helps

in debug of field failure/returns. For higher current

support, TPS1689x can be connected in parallel

with TPS1685x. The devices are characterized for

operation over a junction temperature range of –40°C

to +125°C.