LM5026EVAL National Semiconductor, LM5026EVAL Datasheet - Page 6

• Manufacturer Part Number: LM5026EVAL
• Description: BOARD EVALUATION LM5026
• Manufacturer: National Semiconductor
• Series: PowerWise®r

Specifications of LM5026EVAL

• Main Purpose: DC/DC, Step Down
• Outputs And Type: 1, Isolated
• Voltage - Output: 3.3V
• Current - Output: 30A
• Voltage - Input: 36 ~ 78V
• Regulator Topology: Buck
• Frequency - Switching: 230kHz
• Board Type: Fully Populated
• Utilized Ic / Part: LM5026
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• Power - Output: -

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Over Current Restart
Soft-Start
Oscillator
PWM Comparator
Output Section
Output Timing Control
Symbol
Restart Threshold
Fault Charging Current
Discharging Current
Soft-start Current
Source
Soft-stop Current Sink
Soft-start Current
Source following a
restart event
Frequency1
Frequency2
SYNC Source Current
SYNC Sink Impedance Can sync up to 5 like controllers
Sync Threshold (falling)
Sync Pulse Width
Minimum
Delay to Output
Mimimum Duty Cycle
Maximum Duty Cycle
Limit 1
Maximum Duty Cycle
Limit 2
Maximum Duty Cycle
Limit 3
SS to PWM Offset
COMP Input
Impedance
Slope Compensation
Amplitude
OUT_A High Saturation MOS Device @ Iout = -10mA,
OUTPUT_A Peak
Current Sink
OUT_A Low Saturation MOS Device @ Iout = 10mA,
OUTPUT_A Rise Time C
OUTPUT_A Fall Time
OUT_B High Saturation Iout = -10mA,
OUT_B Low Saturation Iout = 10mA,
OUTPUT_B Rise Time C
OUTPUT_B Fall Time
Overlap Time
Deadtime
Parameter
RT = 30.0 kΩ
RT = 10.0 kΩ
minimum
CS stepped, Time to onset of
OUT_A transition low
I
UVLO=1.3V, COMP = open,
V
UVLO=1.3V, COMP = open,
V
UVLO=2.92V, COMP = open,
V
Small signal impedance
Delta increase at PWM
comparator to CS
Bipolar Device @ Vcc/2
C
C
R
GND, 50% to 50% transitions
R
REF, 50% to 50% transitions
COMP
DCL
DCL
DCL
gate
gate
gate
gate
SET
SET
= 2.5V
= V
= 2.5V
= 2.2nF
= 2.2nF
= 470pF
= 470pF
= 34.8 kΩ connected to
= 30.0 kΩ connected to
= 1mA
RT
Conditions
x 0.875
6
Min
180
520
2.4
7.5
7.5
0.6
38
38
15
75
70
70
1700
2.55
Typ
200
590
200
100
100
100
1.4
1.4
10
10
50
50
40
80
70
40
90
20
15
10
10
15
15
1
5
3
6
Max
12.5
12.5
220
660
115
130
130
2.7
1.3
58
58
10
20
20
0
9
Units
kHz
kHz
mV
µA
µA
µA
µA
ns
ns
ns
ns
ns
ns
ns
ns
%
%
%
%
Ω
Ω
Ω
Ω
Ω
Ω
V
V
V
A