LM5020 13-100V Wide Vin, Current Mode PWM Boost, Flyback, Sepic Controller | TI.com

LM5020 (ACTIVE)

13-100V Wide Vin, Current Mode PWM Boost, Flyback, Sepic Controller

13-100V Wide Vin, Current Mode PWM Boost, Flyback, Sepic Controller - LM5020
Datasheet
 

Description

The LM5020 high voltage pulse-width-modulation (PWM) controller contains all of the features needed to implement single ended primary power converter topologies. Output voltage regulation is based on current-mode control, which eases the design of loop compensation while providing inherent line feed-forward. The LM5020 includes a high-voltage start-up regulator that operates over a wide input range up to 100V. The PWM controller is designed for high speed capability including an oscillator frequency range to 1MHz and total propagation delays less than 100ns. Additional features include an error amplifier, precision reference, line under-voltage lockout, cycle-by-cycle current limit, slope compensation, softstart, oscillator synchronization capability and thermal shutdown. The controller is available in both MSOP-10 and LLP-10 packages.


Features

  • Internal Start-up Bias Regulator
  • Error Amplifier
  • Precision Voltage Reference
  • Programmable Softstart
  • 1A Peak Gate Driver
  • Maximum Duty Cycle Limiting (80% for LM5020-1 or 50% for LM5020-2)
  • Programmable Line Under Voltage Lockout (UVLO) with Adjustable Hysteresis
  • Cycle-by-Cycle Over-Current Protection
  • Slope Compensation (LM5020-1)
  • Programmable Oscillator Frequency with Synchronization Capability
  • Current Sense Leading Edge Blanking
  • Thermal Shutdown Protection

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Parametrics Compare all products in Boost controllers (external switch)

 
Vin (Min) (V)
Vin (Max) (V)
Vout (Min) (V)
Vout (Max) (V)
Regulated Outputs (#)
Switching Frequency (Min) (kHz)
Switching Frequency (Max) (kHz)
Iq (Typ) (mA)
Features
Duty Cycle (Max) (%)
Operating Temperature Range (C)
Rating
Type
Package Group
LM5020 LM25122-Q1 LM5022 LM5121 LM5122 LM5122-Q1 LM5122ZA
13     3     6     3     3     3     3    
100     42     60     65     65     65     65    
1.25     3     1.25     3     3     3     3    
300     50     300     100     100     100     100    
1     1     1     1     1     1     1    
175     50     170     50     50     50     50    
1000     600     2200     1000     1000     1000     1000    
2     4     3.5     4     4     4     4    
Enable
Frequency Synchronization
Pre-Bias Start-Up    
Enable
Frequency Synchronization
Phase Interleaving
Synchronous Rectification    
Enable
Frequency Synchronization
UVLO Adjustable    
Adjustable Current Limit
Enable
Frequency Synchronization
Light Load Efficiency
Synchronous Rectification
UVLO Adjustable    
Enable
Frequency Synchronization
Phase Interleaving
Synchronous Rectification
UVLO Adjustable    
Enable
Frequency Synchronization
Phase Interleaving
Synchronous Rectification
UVLO Adjustable    
Enable
Frequency Synchronization
Phase Interleaving
Synchronous Rectification
UVLO Adjustable    
80     100     90     100     100     100     100    
-40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 125     -40 to 125    
Catalog     Automotive     Catalog     Catalog     Catalog     Automotive     Catalog    
Controller     Controller     Controller     Controller     Controller     Controller     Controller    
VSSOP | 10
WSON | 10    
HTSSOP | 20     VSSOP | 10     HTSSOP | 20     HTSSOP | 20
HTSSOP | 24    
HTSSOP | 20     HTSSOP | 24