LINEAR TECHNOLOGY LTC3722-1 User Guide and Specifications Book LTC3722-2 User Manual and Technical Documentation
Summary
Optimize your power delivery systems with this dual-mode full bridge controller, engineered for high efficiency Zero Voltage Switching (ZVS) converters. Featuring adaptive ZVS circuits and configurable protection options, it ensures optimal performance in critical infrastructure applications. The detailed manual provides technical deep-dive on advanced features like programmable delay control, comprehensive UVLO management, and low quiescent current operation. Essential for engineers designing reliable power solutions for telecom, data centers, and distributed power architectures.
Page 1 Text Content
LTC3722-1/LTC3722-2 Synchronous Dual Mode Phase Modulated Full Bridge Controllers
FEATURES DESCRIPTIO Adaptive or Manual Delay Control for Zero Voltage The LTC®3722-1/LTC3722-2 phase shift PWM controllers Switching Operation provide all of the control and protection functions neces- Adjustable Synchronous Rectification Timing for sary to implement a high efficiency, zero voltage switched Highest Efficiency (ZVS), full bridge power converter. Adaptive ZVS circuitry Adjustable Maximum ZVS Delay delays the turn-on signals for each MOSFET independent
Adjustable System Undervoltage Lockout/Hysteresis of internal and external component tolerances. Manual Programmable Leading Edge Blanking delay set mode enables secondary side control operation Very Low Start-Up and Quiescent Currents or direct control of switch turn-on delays.
Current Mode (LTC3722-1) or Voltage Mode
The LTC3722-1/LTC3722-2 feature adjustable synchro-
(LTC3722-2) Operation
nous rectifier timing for optimal efficiency. A UVLO pro-
Programmable Slope Compensation
gram input provides accurate system turn-on and turn-off
VCC UVLO and 25m A Shunt Regulator
voltages. The LTC3722-1 features peak current mode
50m A Output Drivers
control with programmable slope compensation and lead-
Soft-Start, Cycle-by-Cycle Current Limiting and
ing edge blanking, while the LTC3722-2 employs voltage
Hiccup Mode Short-Circuit Protection EF FI CI EN CY
mode control with voltage feedforward capability.
5V, 15m A Low Dropout Regulator
24-Pin Surface Mount GN Package The LTC3722-1/LTC3722-2 feature extremely low operat- ing and start-up currents. Both devices include a full range
APPLICATIO S of protection features and are available in the 24-pin
surface mount GN package.
Telecommunications, Infrastructure Power Systems
, LTC and LT are registered trademarks of Linear Technology Corporation.
Distributed Power Architectures Server Power Supplies
TYPICAL APPLICATIO VIN 36V TO 72V
CIN R1
12VOUT, 240W Converter Efficiency
MA MC 36VIN
LTC3722
VOUT 48VIN
L2 72VIN
MB MD
RCS T2
CURRENT (A)
3722 • TA01AU1, U2: LTC4440 GATE DRIVER 3722 TA01b
U3: LTC3901 GATE DRIVER
Page Summary Contents For LINEAR TECHNOLOGY LTC3722-1 User Guide and Specifications Book LTC3722-2 User Manual and Technical Documentation
Manual Details
| Brand | Linear |
|---|---|
| Pages | 28 |
| File Size | 325.72 KB |
| Published | June 16, 2026 |
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Frequently Asked Questions
How does the LTC3722 manage ZVS operation?
It uses an adaptive ZVS circuitry and adjustable synchronous rectification timing for high efficiency, zero voltage switched full bridge power conversion.
What special modes are available for protection and control?
The device offers multiple protections like UVLO and Hiccup Mode Short-Circuit Protection; the LTC3722-1 also features peak current mode control.
Can I customize the power switching behavior?
Yes, users can adjust various delay signals (ADLY/PDLY) and program programmable leading edge blanking delays for secondary side control operation.
What is the operating temperature range?
The LTC3722E operates from -40°C to 85°C, while the other versions use a wider industrial range.