BMR4500002/020 Ericsson Power Modules, BMR4500002/020 Datasheet - Page 24

• Manufacturer Part Number: BMR4500002/020
• Description: DC/DC Converters & Regulators 66W 4.5-14V OUT 20A 25.65x12.9x8.22 mm
• Manufacturer: Ericsson Power Modules
• Series: BMR 450r

Specifications of BMR4500002/020

• Output Power: 110 W
• Input Voltage Range: 4.5 V to 14 V
• Number Of Outputs: 1
• Output Voltage (channel 1): 0.6 V to 5.5 V
• Output Current (channel 1): 20 A
• Package / Case Size: 25.65 mm x 12.9 mm x 8.2 mm
• Output Voltage: 0.6 V to 5.5 V
• Product: Non-Isolated / POL
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

PMBus Interface
The regulator provides a digital PMBus interface that enables
the user to monitor the input and output parameters. The
PMBus interface can also be used for configuration of the
regulator. The products can be used with any standard 2-wire
I
with PMBus version 1.1 and includes an SALERT line to help
mitigate bandwidth limitations related to continuous fault
monitoring. The PMBus signals, SCL, SDA, SALERT requires
passive pull-up resistors as stated in the SMBus Specification.
Monitoring via PMBus
A system controller can monitor a wide variety of different
parameters through the PMBus interface. The controller can
monitor for fault condition by monitoring the SALERT pin,
which will be asserted when any number of pre-configured
fault or warning conditions occur. The system controller can
also continuously monitor for any number of power conversion
parameters including but not limited to the following:
•
•
•
•
•
•
Software Tools for Design and Production
For the regulators Ericsson provides software for configuring
and monitoring via the PMBus interface for use in design and
in production.
For more information please contact your local
Ericsson sales representative.
PMBus Addressing
The PMBus address should be configured with resistors
connected between SA0 and SA1 pin to the –S pin, as shown
in the figure. Recommended resistor values for hard-wiring
PMBus addresses (series E96, 1% tolerance resistors
suggested) are shown in the table.
Schematic of connection of address resistors.
E
2
Prepared (also subject responsible if other)
EAB/FJB/GMF/EKAMAGN
Approved
EAB/FJB/GMF Torbjörn Holmberg
BMR 450 Digital PoL Regulators
Input 4.5-14 V, Output up to 20 A / 100 W
C or SMBus host device. In addition, the device is compatible
Input voltage
Output voltage
Output current
Internal junction temperature
Switching frequency
Duty cycle
SA0
SA1
−S
R SA1
R SA0
Checked
ETORHOL
The PMBus address follows the equation below:
The user can theoretically configure up to 625 unique PMBus
addresses, however the PMBus address range is inherently
limited to 128. Therefore, the user should use index values 0 -
4 on the SA1 pin and the full range of index values on the SA0
pin, which will provide 125 device address combinations. The
user shall also be aware of further limitations of the address
space as stated in the SMBus Specification.
Ericsson Confidential
PRODUCT SPECIFICATION
No.
31/1301-BMR 450 0002
Date
2010-03-02
SA0/SA1 Index
PMBus Address = 25 x (SA1 index) + (SA0 index)
10
11
12
0
1
2
3
4
5
6
7
8
9
R
Technical Specification
EN/LZT 146 400 R3A March 2010
© Ericsson AB
Rev
B
SA0
/R
12.1
13.3
14.7
16.2
17.8
19.6
21.5
23.7
26.1
28.7
31.6
10
11
SA1
[kΩ]
Reference
SA0/SA1 Index
13
14
15
16
17
18
19
20
21
22
23
24
R
SA0
/R
34.8
38.3
42.2
46.4
51.1
56.2
61.9
68.1
82.5
90.9
100
75
SA1
1 (4)
24
[kΩ]