Ericsson Internal
E
EMAOLII
PRODUCT SPECIFICATION
2 (21)
Prepared (also subject responsible if other)
No.
2/1301-BMR 454 Uen
6
Technical Specification
BMR454 series Fully regulated InteCrmheckeeddiate Bus Converters
Approved
Date
Rev
Reference
EN/LZT 146 404 R7A March 2013
SEC/D (Julia You)
SECSUND
2011-07-15
F
© Ericsson AB
Input 36-75 V, Output up to 40 A / 240 W
Functional Description
TP1 = -40 to +90ºC, VI = 36 to 75 V, 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
Configuration File: 190 10-CDA 102 1900/001 rev A
Characteristics
Conditions
min
typ
max
Unit
PMBus monitoring accuracy
VIN_READ
Input voltage
-3
-1.0
-6
+0.4
-0.3
-1.0
-
3
1.0
6
%
%
%
A
VOUT_READ
IOUT_READ
IOUT_READ
TEMP_READ
Output voltage
Output current
Output current
Temperature
VI = 53 V
VI = 53 V, 50-100% of max IO
VI = 53 V, 10% of max IO
-0.7
-5
0.7
5
ºC
-
Fault Protection Characteristics
Factory default
-
-3
-
33
-
-
3
-
V
%
V
Setpoint accuracy
Input Under
Voltage Lockout,
UVLO
Factory default
1.8
Hysteresis
Configurable via PMBus of
threshold range, Note 1
0
-
-
V
Delay
-
-
200
0
-
-
μs
V
Factory default
VOUT_UV_FAULT_LIMIT
(Output voltage)
Over/Under Voltage
Protection,
Configurable via PMBus, Note 1
Factory default
0
-
-
16
-
V
15.6
-
V
VOUT_OV_FAULT_LIMIT
OVP/UVP
Configurable via PMBus, Note 1
VOUT
-
16
-
V
μs
%
fault response time
Setpoint accuracy
200
Io
-6
6
Over Current
Protection,
OCP
Factory default
-
25
-
IOUT_OC_FAULT_LIMIT
A
Configurable via PMBus, Note 1
0
-
-
100
fault response time
OTP_FAULT_LIMIT
200
125
-
-
μs
Factory default
-
Configurable via PMBus, Note 1
Factory default
-50
125
Over Temperature
Protection,
OTP
C
μs
10
OTP hysteresis
Configurable via PMBus, Note 1
0
-
165
-
fault response time
200
Logic Input/Output Characteristics
Logic input low (VIL)
-
-
-
0.8
-
V
V
CTRL_CS, SA0, SA1, PG_SYNC,
SCL, SDA,
Logic input high (VIH)
2.0
CTRL_CS, PG_SYNC, SALERT,
SCL, SDA
IOL = 5 mA
Logic output low (VOL
)
-
-
-
0.4
-
V
V
CTRL_CS, PG_SYNC, SALERT,
SCL, SDA
Logic output high (VOH
)
2.8
IOH = -5 mA
Setup time, SMBus
Hold time, SMBus
Bus free time T(BUF)
100
300
200
-
-
-
ns
ns
us
Note 2
Note 1: See Operating Information section.
Note 2: It is recommended that a PMBus master read back written data for verification i.e. do not rely on the ACK/NACK bit since this bit are as susceptible to errors as any other bit*. However,
under very rare operating conditions, it is possible to get intermittent read back failures. It is therefore recommended to implement error handling in the master that also deals with those situations.
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