LM5032_14 Datasheet, PDF (1/29 Pages) Texas Instruments – High Voltage Dual Interleaved Current Mode Controller

LM5032
www.ti.com
SNVS344 – MARCH 2005
LM5032 High Voltage Dual Interleaved Current Mode Controller
Check for Samples: LM5032
FEATURES
1
•2 Two independent PWM current mode
controllers
• Integrated high voltage startup regulator
• Compound 2.5A 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 under-voltage lockout
• Independently adjustable soft-start (each
regulator)
• Direct interface with opto-coupler transistor
• Thermal shutdown
APPLICATIONS
• Telecommunication Power Converters
• Industrial Power Converters
• +42V Automotive Systems
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 100V and compound (bipolar + CMOS)
gate drivers that provide a robust 2.5A peak sink current. The adjustable maximum PWM duty cycle reduce
stress on the primary side MOSFET switches. Additional features include programmable line under-voltage
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.
Packages
• TSSOP-16
1
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Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
All trademarks are the property of their respective owners.
2
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 2005, Texas Instruments Incorporated