BQ1101-7 POWER ONE, BQ1101-7 Datasheet - Page 25

• Manufacturer Part Number: BQ1101-7
• Description: DC/DC Power Supply Single-OUT 3.3V 25A 82W 15-Pin
• Manufacturer: POWER ONE
• Type: Step Downr

Specifications of BQ1101-7

• Output Current: 25 A
• Output Voltage: 3.3 V
• Input Voltage: 14.4 to 36 V
• Number Of Outputs: 1
• Output Power: 82 W

Table 21: Safety concept leading to an SELV output circuit
BCD20011-G Rev AD, 22-Dec-09
Conditions Front end
Nominal
supply
voltage
Mains
≤150 VAC
Mains
≤ 250 VAC
1
2
3
4
5
6
7
The front end output voltage should match the specified input voltage range of the DC-DC converter.
The maximum rated input voltage of EQ models acc. to IEC/EN 60950 is 150 V. Power-One specifies the tolerance as +12% (max. 168 V)
The earth connection has to be provided by the installer according to IEC/EN 60950.
Based on the maximum rated output voltage provided by the front end.
The installer shall provide an approved fuse with the lowest rating suitable for the application in a non-earthed input conductor directly at the
input of the DC-DC converter (see fig. Schematic safety concept). For UL’s purposes, the fuse needs to be UL-listed.
Each suppressor diode should be dimensioned such that in the case of an insulation fault the diode is able to limit the output voltage to
SELV (<60 V), until the input fuse blows (see fig. Schematic safety concept).
Has to be insulated from earth according to IEC/EN 60950, by at least supplementary insulation, based on the maximum nominal output
voltage from the front end.
Minimum required grade
Functional (i.e. there is
of insolation, to be pro-
vided by the AC-DC front
end, including mains-
supplied battery charger
no need for electrical iso-
lation between the mains
supply circuit and the
DC-DC converter input
circuit)
Basic
Double or reinforced
®
Maximum DC
output voltage safety status of the
from the front
end
≤150 V
≤60 V
≤75 V
≤60 V
≤75 V
≤150 V
≤60 V
≤120 V
≤150 V
1
2
2
2
Minimum required
ELV circuit
Hazardous voltage
Earthed SELV
SELV circuit
front end output
circuit
Primary circuit
secondary circuit
circuit
ELV circuit
Unearthed
hazardous voltage
secondary circuit
Earthed hazardous
voltage secondary
circuit
ELV circuit
Unearthed
hazardous voltage
secondary circuit
TNV-2 circuit
Double or re-infor-
ced insulated un-
earthed hazardous
voltage secondary
circuit
Page 25 of 26
3
3
7
or earthed
3
DC-DC converter
Types
DQ
EQ
BQ, GQ Supplementary insulation,
48Q
CQ
48Q
CQ
BQ, GQ Functional insulation (provi-
48Q, CQ ded by the converter)
48Q
CQ
BQ, GQ Double or reinforced
48Q, CQ insulation
DQ
EQ
DQ
EQ
BQ, 48Q Functional insulation (provi-
CQ, GQ ded by the converter)
48Q, CQ Basic insulation
DQ
EQ
66 – 132 Watt DC-DC Converter
Measures required to achieve
the specified safety status of
the output circuit
Double or reinforced insula-
tion, based on 150 VAC and
DC (provided by the con-
verter) and earthed case
based on 150 VAC (provided
and earthed case
Supplementary insulation,
based on 150 VAC and
double or reinforced insula-
tion
DC-DC converter) and
earthed case
Input fuse
diodes
circuit
user-accessible case
the converter)
and earthed case
Supplementary insulation, ba-
sed on 250 VAC and double
or reinforced insulation
provided by the converter)
and earthed case
by the converter)
by the DC-DC converter)
4
(both provided by the
3
6
, earthed output
and earthed
4
5
, output suppressor
Q Series Data Sheet
(provided by
3
4
(provided
3
3
3
3
or non
4
(both
3
www.power-one.com
Result
Safety status
of the DC-DC
converter
output circuit
SELV circuit
Earthed
SELV circuit
SELV circuit