E
ESECZHW
Approved
Ericsson Internal
PRODUCT SPECIFICATION
No.
Checked
Date
4 (5)
Prepared (also subject responsible if other)
2/1301-BMR 636
Technical Specification
01/E4 Uen
2009-8-5
EN/LZT 146
394 R5D
October
2013
Rev
Reference
7
PKB
4000
Wu)
SEC/D (Betty
series
DC/DC converters,
Input
36-75
V, Output
30
A/90 W
EZYPING
A
© Ericsson AB
1.0 V/30 A Typical Characteristics
Start-up
Shut-down
PKB 4318N PINB
Start-up enabled by connecting V
I
at:
T
ref
= +25°C, V
I
= 53 V,
I
O
= 30 A resistive load.
Top trace: output voltage (0.5 V/div.).
Bottom trace: input voltage (50 V/div.).
Time scale: (5 ms/div.).
Shut-down enabled by disconnecting V
I
at:
T
ref
= +25°C, V
I
= 53 V,
I
O
= 30 A resistive load.
Top trace: output voltage (0.5 V/div.).
Bottom trace: input voltage (50 V/div.).
Time scale: (0.5 ms/div.).
Output Ripple & Noise
Output Load Transient Response
Output voltage ripple at:
T
ref
= +25°C, V
I
= 53 V,
I
O
= 30 A resistive load.
Trace: output voltage (20 mV/div.).
Time scale: (2
μs/div.).
Output voltage response to load current step- Top trace: output voltage (100 mV/div.).
Bottom trace: load current (30 A/div.).
change (7.5-22.5-7.5 A) at:
Time scale: (0.1 ms/div.).
T
ref
=+25°C, V
I
= 53 V.
Output Voltage Adjust (see operating information)
Passive adjust
The resistor value for an adjusted output voltage is calculated by
using the following equations:
For a desired change of the nominal output voltage, the value of the
resistor should be
Radj
=
Where
V
adj
V
oi
−
V
adj
−
1(
k
Ω
)
V
adj
is adjusted output voltage, and
V
oi
is initial output
voltage.
Vertical bars indicate absolute value.
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