DataSheet.es    


PDF UC2864 Data sheet ( Hoja de datos )

Número de pieza UC2864
Descripción (UC2861 - 2868) Resonant-Mode Power Supply Controllers
Fabricantes Unitrode 
Logotipo Unitrode Logotipo



Hay una vista previa y un enlace de descarga de UC2864 (archivo pdf) en la parte inferior de esta página.


Total 9 Páginas

No Preview Available ! UC2864 Hoja de datos, Descripción, Manual

www.DataSheet4U.com
Resonant-Mode Power Supply Controllers
UC1861-1868
UC2861-2868
UC3861-3868
FEATURES
DESCRIPTION
Controls Zero Current Switched (ZCS)
or Zero Voltage Switched (ZVS)
Quasi-Resonant Converters
Zero-Crossing Terminated One-Shot
Timer
Precision 1%, Soft-Started 5V
Reference
Programmable Restart Delay
Following Fault
Voltage-Controlled Oscillator (VCO)
with Programmable Minimum and
Maximum Frequencies from 10kHz to
1MHz
Low Start-Up Current (150µA typical)
Dual 1 Amp Peak FET Drivers
UVLO Option for Off-Line or DC/DC
Applications
The UC1861-1868 family of ICs is optimized for the control of Zero Cur-
rent Switched and Zero Voltage Switched quasi-resonant converters. Dif-
ferences between members of this device family result from the various
combinations of UVLO thresholds and output options. Additionally, the
one-shot pulse steering logic is configured to program either on-time for
ZCS systems (UC1865-1868), or off-time for ZVS applications (UC1861-
1864).
The primary control blocks implemented include an error amplifier to com-
pensate the overall system loop and to drive a voltage controlled oscillator
(VCO), featuring programmable minimum and maximum frequencies. Trig-
gered by the VCO, the one-shot generates pulses of a programmed maxi-
mum width, which can be modulated by the Zero Detection comparator.
This circuit facilitates “true” zero current or voltage switching over various
line, load, and temperature changes, and is also able to accommodate the
resonant components' initial tolerances.
Under-Voltage Lockout is incorporated to facilitate safe starts upon
power-up. The supply current during the under-voltage lockout period is
typically less than 150µA, and the outputs are actively forced to the low
state.
(continued)
Device
UVLO
Outputs
“Fixed”
1861
16.5/10.5
Alternating
Off Time
BLOCK DIAGRAM
1862
16.5/10.5
Parallel
Off Time
1863
36014
Alternating
Off Time
1864
36014
Parallel
Off Time
1865
16.5/10.5
Alternating
On Time
1866
16.5/10.5
Parallel
On Time
1867
36014
Alternating
On Time
1868
36014
Parallel
On Time
Pin numbers refer to the J and N packages.
10/98
UDG-92018

1 page




UC2864 pdf
APPLICATION INFORMATION
UC1861-1868
UC2861-2868
UC3861-3868
UDG-92020
Figure 1. UVLO, 5V, fault and soft-ref.
5
UDG-92021-1

5 Page










PáginasTotal 9 Páginas
PDF Descargar[ Datasheet UC2864.PDF ]




Hoja de datos destacado

Número de piezaDescripciónFabricantes
UC2860Resonant Mode Power Supply ControllerTexas Instruments
Texas Instruments
UC2861(UC2861 - 2868) Resonant-Mode Power Supply ControllersUnitrode
Unitrode
UC2861Resonant-Mode Power Supply Controllers (Rev. B)Texas Instruments
Texas Instruments
UC2862(UC2861 - 2868) Resonant-Mode Power Supply ControllersUnitrode
Unitrode

Número de piezaDescripciónFabricantes
SLA6805M

High Voltage 3 phase Motor Driver IC.

Sanken
Sanken
SDC1742

12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters.

Analog Devices
Analog Devices


DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares,
permitiéndote verlos en linea o descargarlos en PDF.


DataSheet.es    |   2020   |  Privacy Policy  |  Contacto  |  Buscar