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UC1875-SP датащи(PDF) 1 Page - Texas Instruments

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номер детали UC1875-SP
подробное описание детали  RAD-TOLERANT CLASS-V, PHASE SHIFT RESONANT CONTROLLER
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производитель  TI1 [Texas Instruments]
домашняя страница  http://www.ti.com
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UC1875-SP датащи(HTML) 1 Page - Texas Instruments

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UC1875-SP
www.ti.com
SLUSAQ9
– DECEMBER 2011
RAD-TOLERANT CLASS-V, PHASE SHIFT RESONANT CONTROLLER
Check for Samples: UC1875-SP
1
FEATURES
DESCRIPTION
The UC1875-SP implements control of a bridge
QML-V Qualified, SMD 5962-94555
power stage by phase-shifting the switching of one
Zero to 100% Duty Cycle Control
half-bridge
with
respect
to
the
other,
allowing
Programmable Output Turn-On Delay
constant
frequency
pulse-width
modulation
in
combination with resonant, zero-voltage switching for
Compatible with Voltage or Current Mode
high efficiency performance at high frequencies. This
Topologies
circuit may be configured to provide control in either
Practical Operation at Switching Frequencies
voltage or current mode operation, with a separate
to 1 MHz
overcurrent shutdown for fast fault protection
Four 2-A Totem Pole Outputs
A programmable time delay is provided to insert a
10 MHz Error Amplifier
dead-time at the turn-on of each output stage. This
delay, providing time to allow the resonant switching
Undervoltage Lockout
action, is independently controllable for each output
Low Startup Current
– 150 µA
pair (A-B, C-D).
Outputs Active Low During UVLO
With the oscillator capable of operation at frequencies
Soft-Start Control
in excess of 2 MHz, overall switching frequencies to
Latched Overcurrent Comparator With Full
1 MHz are practical. In addition to the standard free
Cycle Restart
running mode, with the CLOCKSYNC pin, the user
may configure these devices to accept an external
Trimmed Reference
clock synchronization signal, or may lock together up
to 5 units with the operational frequency determined
APPLICATIONS
by the fastest device
Power FPGAs
spacer
BLOCK DIAGRAM
1
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Copyright
© 2011, Texas Instruments Incorporated
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.


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