Datasheet

ERROR AMP
& ISOLATION
ERROR AMP
& ISOLATION
CS1
CS2
OUT1
OUT2
COMP1
COMP2
VIN
SS1
SS2
VCC
DCL
RES
UVLO
LM5032
VCC
3.3V
2.5V
RT
Sync
36V to 75V
Input
GND1 GND2
V
PWR
LM5032
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SNVS344A MARCH 2005REVISED APRIL 2013
LM5032 High Voltage Dual Interleaved Current Mode Controller
Check for Samples: LM5032
1
FEATURES
Industrial Power Converters
+42V Automotive Systems
2
Two Independent PWM Current Mode
Controllers
DESCRIPTION
Integrated High Voltage Startup Regulator
The LM5032 dual current mode PWM controller
Compound 2.5A Main Output Gate Drivers
contains all the features needed to control either two
Single Resistor Oscillator Setting to 2 MHz
independent forward dc/dc converters or a single high
current converter comprised of two interleaved power
Synchronizable Oscillator
stages. The two controller channels operate 180° out
Programmable Maximum Duty Cycle
of phase thereby reducing input ripple current. The
Maximum Duty Cycle Fold-Back at High Line
LM5032 includes a startup regulator that operates
Voltage
over a wide input range up to 100V and compound
(bipolar + CMOS) gate drivers that provide a robust
Adjustable Timer for Hiccup Mode Current
2.5A peak sink current. The adjustable maximum
Limiting
PWM duty cycle reduce stress on the primary side
Integrated Slope Compensation
MOSFET switches. Additional features include
Adjustable Line Under-Voltage Lockout
programmable line under-voltage lockout, cycle-by-
cycle current limit, hiccup mode fault operation with
Independently Adjustable Soft-Start (Each
adjustable response time, PWM slope compensation,
Regulator)
soft-start, and a 2 MHz capable oscillator with
Direct Interface with Opto-Coupler Transistor
synchronization capability.
Thermal Shutdown
PACKAGE
APPLICATIONS
TSSOP-16
Telecommunication Power Converters
Typical Application Circuit
Figure 1. Dual Interleaved Regulators with Independent Outputs
1
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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
2All trademarks are the property of their respective owners.
PRODUCTION DATA information is current as of publication date.
Copyright © 2005–2013, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.

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