LM5034 Texas instruments

LM5034

Уточнить цену

LM5034

Уточнить цену

СРАВНИТЬ

В СРАВНЕНИИ

Уточнить цену

Описание

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.

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

All trademarks are the property of their respective owners.

Topology	Active-clamp forward
Control mode	Current
Duty cycle (max) (%)	76
Switching frequency (max) (kHz)	2000
Features	Current limiting, High-voltage startup, Soft start, Supports PFET clamp, Synchronization pin
UVLO thresholds on/off (V)	Programmable/1.25V
Operating temperature range (°C)	-40 to 125
Rating	Catalog
Gate drive (typ) (A)	2.5
Vin (max) (V)	15