TPS658620ZQZT datasheet(34/104 Pages) TI

номер детали	TPS658620ZQZT

подробное описание детали	Advanced Power Management Unit

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TPS658620

Advanced Power Management Unit

SLVS993 – OCTOBER 2009

www.ti.com

Table 3-3. Power Path Detection Functions

SYSTEM STATUS

DETECTION CONDITIONS(1)

AC input voltage detected

VIN(OVP) > V(AC) > V(BAT) + VIN(DT)

USB input voltage detected

VIN(OVP) > V(USB) > V(BAT) + VIN(DT)

AC over-voltage detected

V(AC) > VIN(OVP)

USB over-voltage detected

V(USB) > VIN(OVP)

SYS pin short detected

V(SYS) < VSH(SYS)

Battery switch over-current detection

I(BAT) > IBATSYS

Supplement mode detection

V(SYS)<V(BAT)–VSUP(SYS) AND I(BAT)< IBATSYS

(1)

VIN(DT), VSH(SYS), VBATSH, VIN(OVP), VSUP(SYS) are TPS658620 internal references, refer to the electrical characteristics for additional

details

Figure 3-4. Simplified Power Path Block

The I2C control bits and system status are used by the power path control logic to define the state of the

power path switches as shown below; a fault condition will be detected when the SYS pin is shorted or a

battery switch over-current condition is detected.

DETAILED DESCRIPTION

34

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