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ZLR964222L
Line Module User Guide
33
Microsemi Corporation Confidential and Proprietary
6.4 Power Consumption at DC Feed and Ringing
Power Data is shown for two confurations. The first representing power consumption related to EUs Code of
Conduct 2018/2019 (CoC) requirements. The second is the default profile which would be more applicable to other
regions of the world.
6.4.1 CoC Profile Power Consumption
The following parameters are used to calculate DC feed and Ringing power consumption:
DC Feed Power Consumption
1. On- and off- hook

states: (see
Le9642
data sheet conditions)
2. Off-Hook Load 200

(CoC defined loop feed 20ma into 200

)
3. V
DD
= 3.3V, V
SW
= 12.0 V, V
BL
= 22 V, V
BH
= 54 V
4. V
OC
= 48V, I
LA
= 20 mA
5. All tests were performed on a
ZLR964222L
Rev B0 module.
Ringing Power Consumption
Ringing tests have two conditions: C1 and C2 with ILR = 50 mA and RTTH = 21 mA (AC only).
1. C1 programmed ringing 25 Hz 70 V
PK
(50 V
RMS
), 0 V
DC
offset and 1 REN (6920

+ 8 µF) load
2. C2 programmed ringing 25 Hz 70 V
PK
(50 V
RMS
), 0 V
DC
offset and 3 REN (2333

+ 24 µF) load
Table 2 - CoC Profile Power Dissipation
1. I
DD
supply current is the sum of I
AVDD
and I
DVDD
for the device.
2. Power numbers are per channel for both channels in the same state.
3. Power numbers are for a combinations of both channels for these specific conditions.
Operational State Condition
I
DD
mA
(1)
I
VSW
mA
I
VBL1/2
mA
I
VBH
mA
Device Power
mW
(4)
System
Power mW
(4)
Typ Typ Typ Typ Typ Typ
Shutdown
(2)
Disconnect, switcher off 1.5 0 0 0 5 5
Disconnect
(2)
Per Ch, Disconnect 4.75 0.53 0 0.1 21 22
Low Power Idle
(2)
Per Ch LPI 8.8 1.2 0 0.18 39 43.4
Idle/Standby
(2)
Per Ch Idle 14.7 4.88 0 0.75 89 107
Active OHT
(2)
Per Ch, OHT 20 13.1 1.98 173 223
Active (normal or
reverse polarity)
(3)
One Ch Off-Hook,
200

, other Ch LPI
31.5 57.6 20.8 0.66 517 795
Both Ch Off-Hook,
200

38.9 110.5 41.6 0.95 935 1454
Ringing
(3)
C1, Other Channel LPI 33.7 86 0 7.33 380 1143
C2, Other Channel LPI 33.5 191 0 18.8 925 2403
C1, Other Channel
Active
41.5 170 20.8 7.74 897 2177
C2, Other Channel
Active
41.7 274 20.8 19.2 1442 3426