LM5034 High Voltage Dual Interleaved Current Mode Controller with Active Clamp | TI.com

LM5034 (ACTIVE) High Voltage Dual Interleaved Current Mode Controller with Active Clamp

 

Description

The LM5034 dual current mode PWM controller contains all the features needed to control either two independent forward/active clamp 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 LM5034 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 dead-time of the active clamp gate drivers and 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 restart delay, PWM slope compensation, soft-start, and a 2 MHz capable oscillator with synchronization capability.

Features

  • 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
  • Active Clamp Gate Driver for P-Channel MOSFETs
  • Adjustable Gate Drive Overlap Time
  • 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

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Parametrics

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Part number Order Topology Control method VCC (Min) (V) VCC (Max) (V) Frequency (Max) (kHz) UVLO thresholds on/off (V) Duty cycle (Max) (%) Gate drive (Typ) (A) Features Rating Operating temperature range (C) Package Group Package size: mm2:W x L (PKG)
LM5034 Order now Active-Clamp Forward
Flyback
Forward    
Current     8     15     2000     Programmable/1.25V     76     2.5     Current Limiting
HV Start-up
Soft Start
Supports PFET Clamp
Synchronization Pin    
Catalog     -40 to 125     TSSOP | 20     20TSSOP: 42 mm2: 6.4 x 6.5 (TSSOP | 20)    
LM5026 Order now Active-Clamp Forward
Forward    
Current     8     15     1000     Programmable/1.25V     80     3     Current Limiting
Dead Time Control
HV Start-up
Leading Edge Blanking
Programmable Max Duty Cycle
Programmable Soft Start
Supports NFET Clamp
Supports PFET Clamp
Synchronization Pin    
Catalog     -40 to 125     TSSOP | 16
WSON | 16    
16TSSOP: 22 mm2: 4.4 x 5 (TSSOP | 16)
16WSON: 25 mm2: 5 x 5 (WSON | 16)    
UCC2897A Order now Active-Clamp Forward
Forward    
Current     8.5     16     1000     12.7/~8     74     2     HV Start-up
Input Line Monitor
Programmable Slope Compensation
Soft Start
Soft Switching
Supports PFET Clamp    
Catalog     -40 to 125     QFN | 20
TSSOP | 20    
20QFN: 16 mm2: 4 x 4 (QFN | 20)
20TSSOP: 42 mm2: 6.4 x 6.5 (TSSOP | 20)