LINEAR LTC1922-1 Data Sheet
Summary
The LTC1922-1 is a high-performance, full-bridge power controller designed for developing isolated, high-efficiency, zero voltage switched (ZVS) power supplies. It integrates synchronous rectification with fixed frequency operation and features robust protection mechanisms suitable for critical systems. This manual provides comprehensive electrical characteristics, operational guidelines, and application details for implementing complex distributed power architectures in fields like telecommunications, infrastructure, and server power solutions.
Page 1 Text Content
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LTC1922-1
Synchronous Phase
Modulated Full-Bridge Controller
FEATURES DESCRIPTIO Adaptive Direct Sense TM Zero Voltage Switching The LTC®1922-1 phase shift PWM controller provides all Integrated Synchronous Rectification Control for of the control and protection functions necessary to imple- Highest Efficiency ment a high performance, zero voltage switched, phase Output Power Levels from 50W to Kilowatts shift, full-bridge power converter with synchronous recti-
Very Low Start-Up and Quiescent Currents fication. The part is ideal for developing isolated, low Compatible with Voltage Mode and Current Mode voltage, high current outputs from a high voltage input Topologies source. The LTC1922-1 combines the benefits of the full- Programmable Slope Compensation bridge topology with fixed frequency, zero voltage switch- Undervoltage Lockout Circuitry with 4.2V Hysteresis ing operation (ZVS). Adaptive ZVS circuity controls the and Integrated 10.3V Shunt Regulator turn-on signals for each MOSFET independent of internal Fixed Frequency Operation to 1MHz and external component tolerances for optimal perfor- 50m A Outputs for Bridge Drive and Secondary Side mance.
Synchronous Rectifiers
The LTC1922-1 also provides secondary side synchro-
Soft-Start, Cycle-by-Cycle Current Limiting and
nous rectifier control. The device uses peak current mode
Hiccup Mode Short-Circuit Protection
control with programmable slope comp and leading edge
5V, 15m A Low Dropout Regulator
blanking.
20-Pin PDIP and SSOP Packages
The LTC1922-1 features extremely low operating and
APPLICATIO S EF FI CI EN CY start-up currents to simplify off-line start-up and bias
circuitry. The LTC1922-1 also includes a full range of
Telecommunications, Infrastructure Power Systems
protection features and is available in 20-pin through hole
Distributed Power Architectures
(N) and surface mount (G) packages.
Server Power Supplies
, LTC and LT are registered trademarks of Linear Technology Corporation. High Density Power Modules Direct Sense is a trademark of Linear Technology Corporation.
TYPICAL APPLICATIO
VIN 48V
SUPPLY Efficiency
VOUT 3.3V
VIN = 48V
VIN = 36V
LTC1922-1
ISOLATED FEEDBACK
LOAD CURRENT (A)
1922 • TA01b
1922 TA01a
Page Summary Contents For LINEAR LTC1922-1 Data Sheet
Manual Details
| Brand | Linear |
|---|---|
| Pages | 24 |
| File Size | 298.75 KB |
| Published | June 17, 2026 |
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Frequently Asked Questions
What is the typical output power range for the LTC1922-1?
It supports a wide range of outputs, from 50W up to Kilowatts.
How does the device maintain high efficiency?
It uses Synchronous Rectification Control and features adaptive Zero Voltage Switching (ZVS) operation.
Does it offer various operating modes for protection?
Yes, it includes protections like Soft-Start, Cycle-by-Cycle Current Limiting, Hiccup Mode, and Short-Circuit Protection.
What temperature range is supported by the LTC1922-1 package in G/N style?
The operational temperature range for the LTC1922E/I is –40°C to 85°C.