Datasheet Texas Instruments LM5020SDX-1/NOPB — Ficha de datos

LM5020
www.ti.com SNVS275F – MAY 2004 – REVISED APRIL 2006 LM5020 100V Current Mode PWM Controller
Check for Samples: LM5020 FEATURES PACKAGES 1 2 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 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 feedforward. The LM5020 includes a high-voltage start-up …