LM5032_15 Datasheet, PDF (1/34 Pages) Texas Instruments – High-Voltage Dual Interleaved Current Mode Controller

Product
Folder
Sample &
Buy
Technical
Documents
Tools &
Software
Support &
Community
Reference
Design
LM5032
SNVS344B – MARCH 2005 – REVISED DECEMBER 2014
LM5032 High-Voltage Dual Interleaved Current Mode Controller
1 Features
•1 Two Independent PWM Current Mode Controllers
• Integrated High-Voltage Startup Regulator
• Compound 2.5-A Main Output Gate Drivers
• Single Resistor Oscillator Setting to 2 MHz
• Synchronizable Oscillator
• Programmable Maximum Duty Cycle
• Maximum Duty Cycle Fold-Back at High-Line
Voltage
• Adjustable Timer for Hiccup Mode Current
Limiting
• Integrated Slope Compensation
• Adjustable Line Undervoltage Lockout
• Independently Adjustable Soft-Start (Each
Regulator)
• Direct Interface with Opto-Coupler Transistor
• Thermal Shutdown
• TSSOP 16-Pin Package
2 Applications
• Telecommunication Power Converters
• Industrial Power Converters
• 42-V Automotive Systems
3 Description
The LM5032 dual current mode PWM controller
contains all the features needed to control either two
independent forward dc/dc converters or a single high
current converter comprised of two interleaved power
stages. The two controller channels operate 180° out
of phase thereby reducing input ripple current. The
LM5032 includes a startup regulator that operates
over a wide input range up to 100 V and compound
(bipolar + CMOS) gate drivers that provide a robust
2.5-A peak sink current. The adjustable maximum
PWM duty cycle reduce stress on the primary side
MOSFET switches. Additional features include
programmable line undervoltage lockout, cycle-by-
cycle current limit, hiccup mode fault operation with
adjustable response time, PWM slope compensation,
soft-start, and a 2-MHz capable oscillator with
synchronization capability.
Device Information⁽¹⁾
PART NUMBER PACKAGE
BODY SIZE (NOM)
LM5032
TSSOP (16)
5.00 mm x 4.40 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Typical Application Circuit
36V to 75V
Input
Sync
V_PWR
VIN
LM5032 ^CS1
UVLO
RES
OUT1
RT
DCL
COMP1
VCC
3.3V
ERROR AMP
& ISOLATION
2.5V
VCC
SS2
SS1
GND1 GND2
CS2
OUT2
COMP2
ERROR AMP
& ISOLATION
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.