Ericsson Internal
E
ETORHOL, EKAMAGN, EJANARV
PRODUCT SPEC
2 (9)
Prepared (also subject responsible if other)
No.
2/1301-BMR 451 0002 Uen
5
Technical Specification
Approved
Checked
Date
Rev
Reference
EN/LZT 146 401 R4A May 2015
BMR 451 Digital PoL Regulators
Input 4.5-14 V, Output up to 40 A / 132 W
SEC/D (Julia You)
ETORHOL
2010-03-02
E
© Ericsson AB
Functional Specification
TP1 = -40 to +85ºC, VI = 4.5 to 14 V
Typical values given at: TP1 = +25°C, VI = 12 V, max IO, unless otherwise specified under Conditions
Configuration File: 190 10-CDA 102 900/020
Characteristics
Conditions
min
typ
max
Unit
SMBus monitoring
VIN_READ, 0x88h
VOUT_READ, 0x8Bh
IOUT_READ, 0x8Ch
Accuracy vs. VI
Accuracy vs. VO
Accuracy vs. IO
-3
-1
3
1
%
%
%
-20
20
General Electrical Characteristics
fs Switching frequency
Factory default
320
10
kHz
pF
CISMBus Internal capacitance
CI Internal input capacitance
Fault Protection Characteristics
UVLO Threshold
SMBus signals, SDA, SCL
140
µF
4.0
0.4
V
mV
V
Input Under
Set point accuracy
-100
100
2.5
Voltage Lockout,
Hysteresis
UVLO
Factory default
Delay
µs
UVP threshold
Factory default
Factory default
85
% VOUT
% VOUT
(Output voltage)
Over/Under
Voltage Protection,
OVP/UVP
OVP threshold
115
OVP/UVP fault response
time
Factory default
25
µs
Set point accuracy
OCP threshold
Io
-20
+20
%
A
Over Current
Protection,
OCP
Factory default
50
45
OCP protection delay
OTP threshold
Factory default
Factory default
µs
120
15
Over Temperature
Protection,
OTP at TP1
°C
OTP hysteresis
Factory default
Logic Input/Output Characteristics
Logic input low threshold (VIL)
Logic input high threshold (VIH)
0.8
0.4
V
V
CTRL, SCL, SDA, FLEX
2.0
SALERT, SCL, SDA, FLEX
Logic output low (VOL
)
V
V
I
OL ≤ 4 mA
SALERT, SCL, SDA, FLEX
IOL ≥ -2 mA
Logic output high (VOH
)
2.25
Setup time, SMBus (tset
)
See Note 1
See Note 1
300
250
ns
ns
Hold time, SMBus (thold
)
Note 1: See operation information section for I2C/SMBus Setup and Hold Times – Definitions
ERICSSON [ ERICSSON ]
