Ericsson Internal
E
SECSUND
PRODUCT SPECIFICATION
3 (17)
Prepared (also subject responsible if other)
No.
2/1301-BMR 457 Uen
7
Technical Specification
BMR457 series Fully regulated AdvCahneckceed d Bus Converters
Approved
Date
Rev
Reference
SEC/D (Julia You)
EZHIXZH
2012-08-24
C
1/28701-FGCL101 1835 revC August 2012
© Ericsson AB
Input 36-75 V, Output up to 25 A / 300 W
Electrical Specification
12 V, 22 A, 264 W
BMR457 0004/001
TP1 = -40 to +90ºC, VI = 36 to 75V, sense pins connected to output pins unless otherwise specified under Conditions.
Typical values given at: TP1 = +25°C, VI = 53 V, max IO, unless otherwise specified under Conditions.
Additional Cin= 0.1 mF, Cout = 0.1 mF. See Operating Information section for selection of capacitor types.
Configuration File: 19010-CDA 102 0315/001
Characteristics
Conditions
min
36
typ
max
75
Unit
V
VI
Input voltage range
VIoff
VIon
CI
Turn-off input voltage
Turn-on input voltage
Internal input capacitance
Output power
Decreasing input voltage
Increasing input voltage
32
33
35
11
34
V
34
36
V
μF
W
PO
0
264
50% of max IO
94.7
94.5
95.2
94.8
15.5
3.5
max IO
η
Efficiency
%
50% of max IO, VI = 48 V
max IO, VI = 48 V
max IO
Pd
Pli
PRC
fs
Power Dissipation
22
W
W
Input idling power
IO = 0 A, VI = 53 V
VI = 53 V (turned off with RC)
0-100 % of max IO
Input standby power
Default switching frequency
0.4
W
171
180
189
kHz
Output voltage initial setting and
accuracy
VOi
TP1 = +25°C, VI = 53 V, IO = 12 A
11.88
12.0
12.12
V
Output adjust range
Output voltage tolerance band
Idling voltage
See operating information
0-100 % of max IO
IO = 0 A
6.9
13.2
12.24
12.12
200
V
V
11.76
11.88
VO
V
Line regulation
max IO
100
30
mV
mV
Load regulation
VI = 53 V, 1-100 % of max IO
100
Load transient
voltage deviation
VI = 53 V, Load step 25-75-25% of
max IO, di/dt = 1 A/μs, Cout = 2.2 mF
OSCON type
Vtr
ttr
±350
200
8
mV
µs
Load transient recovery time
Ramp-up time
(from 10−90% of VOi)
tr
ms
10-100 % of max IO
Start-up time
(from VI connection to 90% of VOi)
ts
tf
23
ms
max IO
IO = 0 A
max IO
0.7
6
ms
s
VI shut-down fall time
(from VI off to 10% of VO)
RC start-up time
12
ms
tRC
max IO
3
6
ms
RC shut-down fall time
(from RC off to 10% of VO)
IO = 0 A
s
A
IO
Output current
0
22
26
Ilim
Current limit threshold
Short circuit current
VO = 10.8 V, TP1 < max TP1
TP1 = 25ºC, see Note 1
24
25
1.1
2.2
50
A
Isc
A
Cout
VOac
Recommended Capacitive Load TP1 = 25ºC, see Note 2
0
6
mF
mVp-p
Output ripple & noise
See ripple & noise section, VOi
100
TP1 = +25°C, VI = 53 V, 10-100 % of
max IO
OVP
RC
Over voltage protection
15.6
V
Sink current, see Note 3
Trigger level
See operating information
0.7
mA
V
Decreasing / Increasing RC-voltage
2.6/2.9
Note 1: OCP in hic-up mode
Note 2: Low ESR-value
Note 3: Sink current drawn by external device connected to the RC pin. Minimum sink current required to guarantee activated RC function.
ERICSSON [ ERICSSON ]
