LTC3722 Series

Synchronous Dual Mode Phase Modulated Full Bridge Controllers

Catalog

Synchronous Dual Mode Phase Modulated Full Bridge Controllers

Part	Output Configuration	Supplier Device Package	Control Features	Duty Cycle (Max) [Max]	Output Phases	Mounting Type	Output Type	Number of Outputs	Topology	Voltage - Supply (Vcc/Vdd) [Min]	Voltage - Supply (Vcc/Vdd) [Max]	Package / Case	Package / Case [custom]	Function	Operating Temperature [Max]	Operating Temperature [Min]
Analog Devices LTC3722IGN-1#PBF	Isolation Capable Positive	24-SSOP	Current Limit Ramp Soft Start	98.5 %	2	Surface Mount	Transistor Driver	2	Full-Bridge	3.8 V	10.25 V	24-SSOP	0.154 " 3.9 mm	Step-Up/Step-Down	85 °C	-40 °C
Analog Devices LTC3722HGN-1	Isolation Capable Positive	24-SSOP	Current Limit Ramp Soft Start	98.5 %	2	Surface Mount	Transistor Driver	2	Full-Bridge	3.8 V	10.25 V	24-SSOP	0.154 " 3.9 mm	Step-Up/Step-Down	150 °C	-40 °C
Analog Devices LTC3722IGN-1	Isolation Capable Positive	24-SSOP	Current Limit Ramp Soft Start	98.5 %	2	Surface Mount	Transistor Driver	2	Full-Bridge	3.8 V	10.25 V	24-SSOP	0.154 " 3.9 mm	Step-Up/Step-Down	85 °C	-40 °C
Analog Devices LTC3722EGN-2#TRPBF	Isolation Capable Positive	24-SSOP	Current Limit Ramp Soft Start	98.5 %	2	Surface Mount	Transistor Driver	2	Full-Bridge	3.8 V	10.25 V	24-SSOP	0.154 " 3.9 mm	Step-Up/Step-Down	85 °C	-40 °C
Analog Devices LTC3722HGN-1#PBF	Isolation Capable Positive	24-SSOP	Current Limit Ramp Soft Start	98.5 %	2	Surface Mount	Transistor Driver	2	Full-Bridge	3.8 V	10.25 V	24-SSOP	0.154 " 3.9 mm	Step-Up/Step-Down	150 °C	-40 °C
Analog Devices LTC3722IGN-2#TRPBF	Isolation Capable Positive	24-SSOP	Current Limit Ramp Soft Start	98.5 %	2	Surface Mount	Transistor Driver	2	Full-Bridge	3.8 V	10.25 V	24-SSOP	0.154 " 3.9 mm	Step-Up/Step-Down	85 °C	-40 °C
Analog Devices LTC3722EGN-1#PBF	Isolation Capable Positive	24-SSOP	Current Limit Ramp Soft Start	98.5 %	2	Surface Mount	Transistor Driver	2	Full-Bridge	3.8 V	10.25 V	24-SSOP	0.154 " 3.9 mm	Step-Up/Step-Down	85 °C	-40 °C
Analog Devices LTC3722HGN-1#TRPBF	Isolation Capable Positive	24-SSOP	Current Limit Ramp Soft Start	98.5 %	2	Surface Mount	Transistor Driver	2	Full-Bridge	3.8 V	10.25 V	24-SSOP	0.154 " 3.9 mm	Step-Up/Step-Down	150 °C	-40 °C

Catalog

Synchronous Dual Mode Phase Modulated Full Bridge Controllers

Key Features

• Adaptive or Manual Delay Control for Zero Voltage Switching Operation

• Adjustable Synchronous Rectification Timing for Highest Efficiency

• Adjustable Maximum ZVS Delay

• Adjustable System Undervoltage Lockout Hysteresis

• Programmable Leading Edge Blanking

• Very Low Start-Up and Quiescent Currents

• Current Mode (LTC3722-1) or Voltage Mode (LTC3722-2) Operation

• Programmable Slope Compensation

• VCCUVLO and 25mA Shunt Regulator

• 50mA Output Drivers

• Soft-Start, Cycle-by-Cycle Current Limiting and Hiccup Mode Short-Circuit Protection

• 5V, 15mA Low Dropout Regulator

• 24-Pin Surface Mount GN Package

Description

The LTC3722-1/LTC3722-2 phase-shift PWM controllers provide all of the control and protection functions necessary to implement a high efficiency, zero voltage switched (ZVS), full bridge power converter. Adaptive ZVS circuitry delays the turn-on signals for each MOSFET independent of internal and external component tolerances. Manual delay set mode enables secondary side control operation or direct control of switch turn-on delays.The LTC3722-1/LTC3722-2 feature adjustable synchronous rectifier timing for optimal efficiency. A UVLO program input provides accurate system turn-on and turn-off voltages. The LTC3722-1 features peak current mode control with programmable slope compensation and leading edge blanking, while the LTC3722-2 employs voltage mode control.The LTC3722-1/LTC3722-2 feature extremely low operating and start-up currents. Both devices include a full range of protection features and are available in the 24-pin surface mount GN package.ApplicationsTelecommunications, Infrastructure Power SystemsDistributed Power ArchitecturesServer Power Supplies