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LM5032 Datasheet(PDF) 6 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
Part # LM5032
Description  High Voltage Dual Interleaved Current Mode Controller
PDF  22 Pages
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Manufacturer  NSC [National Semiconductor (TI)]
Direct Link  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM5032 Datasheet(HTML) 6 Page - National Semiconductor (TI)

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Electrical Characteristics (Continued)
Specifications with standard typeface are for T
J = 25˚C, and those with boldface type apply over full Operating Junction
Temperature range. VIN = 48V, VCC = 10V externally applied, R
T =RDCL = 42.2k
Ω, UVLO = 1.5V, unless otherwise
stated (Note 3) and (Note 4).
Symbol
Parameter
Conditions
Min
Typ
Max
Units
Oscillator (RT/SYNC Pin)
F
S1
Frequency 1 (at OUT1,
OUT2)
R
T = 42.2 k
Ω
183
200
217
kHz
F
S2
Frequency 2 (at OUT1,
OUT2)
R
T = 13.7 k
Ω
530
600
670
kHz
DC voltage
2V
Input Sync threshold
2.6
3.3
3.7
V
PWM Controller (COMP1, COMP2, Duty Cycle Limit Pins)
Delay to output
COMP1 (COMP2) set to 2V. CS1 (CS2)
stepped from 0 to 0.4V. Time for OUT1
(OUT2) to fall to 90% of VCC. Output
load = 0 pF.
50
ns
V
COMP
COMP1 (COMP2) open
circuit voltage
5V
I
COMP
COMP1 (COMP2) short
circuit current
COMP1 (COMP2) = 0V
0.6
1
1.4
mA
COMP1 (COMP2) to PWM1
(PWM2) gain
0.33
V/V
Minimum duty cycle
SS1 (SS2) = 0V
0
%
Maximum duty cycle 1
UVLO pin = 1.30V, R
DCL =RT, COMP1
(COMP2) = open
76
%
Maximum duty cycle 2
UVLO pin = 3.75V, R
DCL =RT, COMP1
(COMP2) = open
20
%
Maximum duty cycle 3
UVLO pin = 1.30V, R
DCL =RT/4,
COMP1 (COMP2) = open
20
%
Maximum duty cycle 4
UVLO pin = 2.50V, R
DCL =RT, COMP1
(COMP2) = open
50
%
Maximum duty cycle 5
UVLO pin = 1.30V, R
DCL =RT/2,
COMP1 (COMP2) = open
40
%
Slope compensation
Delta increase at PWM comparator to
CS1 (CS2)
90
mV
Channel mismatch
CS1 (CS2) = 0.25V
7
%
Soft-start to COMP offset
SS1 (SS2) = 0.8V
0
V
Main Output Drivers (OUT1, OUT2)
Output high voltage
I
OUT = 50mA (source)
VCC-1
VCC-0.2
V
Output low voltage
I
OUT = 100 mA (sink)
0.3
1
V
Rise time
C
LOAD =1nF
12
ns
Fall time
C
LOAD =1nF
10
ns
Peak source current
1.5
A
Peak sink current
2.5
A
www.national.com
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