E
SECSUND
Approved
Prepared (also subject responsible if other)
No.
Ericsson Internal
PRODUCT SPECIFICATION
Rev
Reference
3 (17)
BMR457 series
SEC/D (Julia You)
Fully
regulated Advanced
Bus
Converters
EZHIXZH
2012-08-24
Input 36-75 V, Output up to
25
A /
300
W
Checked
2/1301-BMR 457
Technical Specification
Uen
Date
7
1/28701-FGC
101 1835
revC
August
2012
© Ericsson AB
C
L
Electrical Specification
12 V, 22 A, 264 W
T
P1
= -40 to +90ºC, V
I
= 36 to 75V, sense pins connected to output pins unless otherwise specified under Conditions.
Typical values given at: T
P1
= +25°C, V
I
= 53 V, max I
O
, unless otherwise specified under Conditions.
Additional C
in
= 0.1 mF, C
out
= 0.1 mF. See Operating Information section for selection of capacitor types.
Configuration File: 19010-CDA 102 0315/001
Characteristics
Conditions
min
typ
V
I
V
Ioff
V
Ion
C
I
P
O
Input voltage range
Turn-off input voltage
Turn-on input voltage
Internal input capacitance
Output power
50% of max I
O
η
Efficiency
max I
O
50% of max I
O
, V
I
= 48 V
max I
O
, V
I
= 48 V
P
d
P
li
P
RC
f
s
V
Oi
Power Dissipation
Input idling power
Input standby power
Default switching frequency
Output voltage initial setting and
accuracy
Output adjust range
Output voltage tolerance band
V
O
Idling voltage
Line regulation
Load regulation
V
tr
t
tr
t
r
t
s
t
f
Load transient
voltage deviation
Load transient recovery time
Ramp-up time
Start-up time
(from 10−90% of V
Oi
)
(from V
I
connection to 90% of V
Oi
)
(from V
I
off to 10% of V
O
)
BMR457 0004/001
max
75
34
36
264
Unit
V
V
V
μF
W
36
Decreasing input voltage
Increasing input voltage
32
34
0
94.7
94.5
95.2
94.8
15.5
3.5
0.4
171
11.88
6.9
11.76
11.88
100
30
±350
200
8
23
0.7
6
12
3
6
0
V
O
= 10.8 V, T
P1
< max T
P1
T
P1
= 25ºC, see Note 1
T
P1
= 25ºC, see Note 2
See ripple & noise section, V
Oi
T
P1
= +25°C, V
I
= 53 V, 10-100 % of
max I
O
See operating information
Decreasing / Increasing RC-voltage
2.6/2.9
0
24
25
1.1
2.2
50
15.6
180
12.0
33
35
11
%
max I
O
I
O
= 0 A, V
I
= 53 V
V
I
= 53 V (turned off with RC)
0-100 % of max I
O
T
P1
= +25°C, V
I
= 53 V, I
O
= 12 A
See operating information
0-100 % of max I
O
I
O
= 0 A
max I
O
V
I
= 53 V, 1-100 % of max I
O
V
I
= 53 V, Load step 25-75-25% of
max I
O
, di/dt = 1 A/
μ
s, C
out
= 2.2 mF
OSCON type
10-100 % of max I
O
max I
O
I
O
= 0 A
max I
O
max I
O
I
O
= 0 A
22
W
W
W
189
12.12
13.2
12.24
12.12
200
100
kHz
V
V
V
V
mV
mV
mV
µs
ms
ms
ms
s
ms
ms
s
V
I
shut-down fall time
RC start-up time
t
RC
I
O
I
lim
I
sc
C
out
V
Oac
OVP
RC
RC shut-down fall time
Output current
Current limit threshold
Short circuit current
(from RC off to 10% of V
O
)
22
26
6
100
A
A
A
mF
mVp-p
V
Recommended Capacitive Load
Output ripple & noise
Over voltage protection
Sink current, see Note 3
Trigger level
0.7
mA
V
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 ]
