ADP5080 datasheet(33/64 Pages) AD

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Data Sheet

ADP5080

Recovering from UVP

After the cause of the undervoltage condition is removed, the

outputs can be recovered by toggling EN from low to high. If

standalone Channel 5 undervoltage shutdown is enabled (by

setting the SEL_IND_UV5 bit in Register 34), Channel 5 can

be recovered by setting the CH5_ON bit in Register 48 to 1.

The undervoltage status of a channel is stored in the UVPST

the UVx bit in Register 26. The UVx bit is cleared by writing a

1 to it.

OVERVOLTAGE PROTECTION (OVP)

The ADP5080 incorporates overvoltage protection (OVP)

on Channel 1 to Channel 6. When the output of any of these

channels rises above 125% of the specified voltage, OVP shuts

down all six channels by internally resetting the CHx_ON bits

in Register 48.

OVP Detection Delay

Overvoltage detection includes a debounce delay, which is

configured in Register 23 (see Table 57). The overvoltage

condition is recognized only after it continues for the period

specified by the OV_DLY bits in Register 23 (see Figure 55).

Setting the OV_DLY bits to 11 disables OVP.

Recovering from OVP

After the cause of the overvoltage condition is removed, the

outputs can be recovered by toggling EN from low to high.

The overvoltage status of a channel is stored in the OVPST

from the OVx bit in Register 27. The OVx bit is cleared by

writing a 1 to it.

Figure 55. Overvoltage Detection Delay

VOUT

CHx_ON

(x = 1 TO 6)

OVx

(x = 1 TO 6)

TIME

125%

Δt < OV_DLY

SHUTDOWN

Δt = OV_DLY

Rev. A | Page 33 of 64

ADP5080 Datasheet(PDF) 33 Page - Analog Devices