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LM5034 датащи(PDF) 2 Page - National Semiconductor (TI)

[Old version datasheet] Texas Instruments acquired National semiconductor. Click here to check the latest version.
номер детали LM5034
подробное описание детали  High Voltage Dual Interleaved Current Mode Controller with Active Clamp
PDF  29 Pages
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производитель  NSC [National Semiconductor (TI)]
домашняя страница  http://www.national.com
Logo NSC - National Semiconductor (TI)

LM5034 датащи(HTML) 2 Page - National Semiconductor (TI)

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Connection Diagram
Top View
20136802
20-Lead TSSOP
Ordering Information
Order Number
Package Type
NSC Package Drawing
Supplied As
LM5034MTC
TSSOP-20
MTC-20
73 Units per Rail
LM5034MTCX
TSSOP-20
MTC-20
2500 Units on Tape and Reel
Pin Description
PIN
NAME
DESCRIPTION
APPLICATIONS INFORMATION
1
OVLP
Active Clamp Overlap Adjust
An external resistor (10 k
Ω to 100 kΩ) sets the overlap time of the
active clamp outputs relative to the main outputs for both Controller 1
and Controller 2. The overlap time results in deadtime between each
main switch and its active clamp switch.
2
VIN
Input Supply
Input to the startup regulator. The operating input range is 13V to
100V with transient capability to 105V.
3
COMP1
PWM Control, Controller 1
The COMP1 input provides voltage feedback to the PWM comparator
inverting input of Controller 1 through a 3:1 divider. The OUT1 duty
cycle increases as the COMP1 voltage increases. An internal 5K
Ω
pull-up resistor to +5.0V provides bias current to an opto-coupler
transistor.
4
CS1
Current Sense Input, Controller 1
Input for current mode control and the current limit sensing. If the CS1
pin exceeds 0.5V the OUT1 pulse is terminated producing
cycle-by-cycle current limiting. External resistance connected to CS1
will adjust (increase) PWM slope compensation. This pin’s voltage
must not exceed 1.25V.
5
SS1
Soft-start, Controller 1
An internal 50 µA current source charges an external capacitor to set
the soft-start rate. During a current limit restart sequence, the internal
current source is reduced to 1 µA to increase the delay before retry.
Forcing SS1 below 0.5V shuts off Controller 1.
www.national.com
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