PLM5177DCPR datasheet(32/54 Pages) TI

Part #	PLM5177DCPR

Description	LM5177 80-V Wide VIN Bidirectional 4-Switch Buck-Boost Controller

PDF	54 Pages

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Manufacturer	TI [Texas Instruments]

Direct Link	http://www.ti.com

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32 / 54 page

The f(SW) synchronization stops if the device enters power save mode or μSleep operation, if enabled. Once the

converter enters the PWM operation again, the device re-syncs to a pin signal. The synchronization timings are

given in Figure 8-18.

VT(SYNC)

OSC

PLL

CORE

LOGIC

SYNC

ACTIVITY

DETECTION

LIMITER

Figure 8-17. Main Oscillator Functional Block Diagram

V(SYNC)

VT+(SYNC)

PLL lock Cycles

VT-(SYNC)

td(Det,Sync)

RT pro gramed fsw

td(Det,Sync)

fsw Synced

RT pro gramed fsw

Figure 8-18. Timing Diagram SYNC Function

The sync pin has a dual function to configure the current limit direction.

8.4 Device Functional Modes

Figure 8-19 describes the functional behavior of the internal device logic.

LM5177

SNVSBU4A – JUNE 2022 – REVISED OCTOBER 2022

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PLM5177DCPR Datasheet(PDF) 32 Page - Texas Instruments