LM5039 Texas instruments

LM5039

Уточнить цену

LM5039

Уточнить цену

СРАВНИТЬ

В СРАВНЕНИИ

Уточнить цену

Описание

The LM5039 Half-Bridge Controller/Gate Driver contains all of the features necessary to implement half-bridge topology power converters using voltage mode control with line voltage feed-forward. The LM5039 is a functional variant of the LM5035B half-bridge PWM controller, featuring average current limit during an overload event to balance the center-point of the half-bridge capacitor divider. The floating high-side gate driver is capable of operating with supply voltages up to 105V. Both the high-side and low-side gate drivers are capable of 2A peak. An internal high voltage startup regulator is included, along with programmable line undervoltage lockout (UVLO). The oscillator is programmed with a single resistor to frequencies up to 2MHz. The oscillator can also be synchronized to an external clock. A current sense input provides peak cycle-by-cycle and average current limit. Other features include adjustable hiccup mode overload protection, soft-start, revision reference, and thermal shutdown.

105V / 2A Half-Bridge Gate Drivers
Synchronous Rectifier Control Outputs with Programmable Delays
High Voltage (105V) Start-up Regulator
Voltage-mode Control with Line Feed-Forward and Volt • Second Limiting
Programmable Average Current Limit Balances the Half-Bridge Capacitor Divider Voltage in an Overload Condition
Programmable Hiccup Mode Timer Reduces Power Dissipation During a Continuous Overload Event
Adjustable Peak Cycle-by-Cycle Over Current Protection
Resistor Programmed, 2MHz Capable Oscillator
Patented Oscillator Synchronization
Programmable Line Under-Voltage Lockout
Internal Thermal Shutdown Protection
Adjustable Soft-Start
Direct Opto-Coupler Interface
5V Reference Output

Packages

HTSSOP-20 (Thermally enhanced)
WQFN-24 (4mm x 5mm)

All trademarks are the property of their respective owners.

Topology	Half bridge
Control mode	Voltage
Duty cycle (max) (%)	50
Switching frequency (max) (kHz)	2000
Features	Current limiting, High-voltage startup, Multi-topology, Synchronization pin
UVLO thresholds on/off (V)	Programmable/1.25V
Operating temperature range (°C)	-40 to 125
Rating	Catalog
Gate drive (typ) (A)	2
Vin (max) (V)	15