Ericsson Internal
E
ETORHOL, EKAMAGN, EJANARV
PRODUCT SPEC
8 (9)
Prepared (also subject responsible if other)
No.
2/1301-BMR 451 0002 Uen
11
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
3.3 V, 40 A/132 W Typical Characteristics
Start-up
BMR 451 0002/020
Shut-down
Start-up enabled by connecting VI at:
P1 = +25°C, VI = 12 V,
IO = 40 A resistive load and 4.4 mF.
Top trace: output voltage (2 V/div.).
Bottom trace: input voltage (5 V/div.).
Time scale: (10 ms/div.).
Shut-down enabled by disconnecting VI at:
Top trace: output voltage (2 V/div).
Bottom trace: input voltage (5 V/div.).
Time scale: (2 ms/div.).
T
T
P1 = +25°C, VI = 12 V,
IO = 40 A resistive load.
Output Ripple & Noise
Output Load Transient Response
Output voltage ripple at:
TP1 = +25°C, VI = 12 V,
IO = 40 A resistive load.
Trace: output voltage (50 mV/div.).
Time scale: (2 µs/div.).
Output voltage response to load current step- Top trace: output voltage (100 mV/div.).
change (10-30-10 A) at:
Bottom trace: load current (10 A/div.).
Time scale: (0.2 ms/div.).
TP1 = +25°C, VI = 12 V, CO = 4.4 mF.
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