DataSheetWiki


ISL78223 fiches techniques PDF

Intersil Corporation - ZVS Full-Bridge PWM Controller

Numéro de référence ISL78223
Description ZVS Full-Bridge PWM Controller
Fabricant Intersil Corporation 
Logo Intersil Corporation 





1 Page

No Preview Available !





ISL78223 fiche technique
ZVS Full-Bridge PWM Controller with AdjustableNOc1NoT-8nOR8ta8ERc-CEItNOCoTOMuErMMRTMSEeINcELhDNonEDricDEwaDFwl OSRwuRE.ipPnNptLeEoArrWsCtiCElD.ceMEonESmteNIG/rTtsNactS
DATASHEET
Synchronous Rectifier Control
ISL78223
The ISL78223 is a high performance zero voltage switching
(ZVS) full-bridge PWM controller. It achieves ZVS operation by
driving the upper bridge FETs at a fixed 50% duty cycle while
the lower bridge FETs are trailing-edge modulated with
adjustable resonant switching delays.
Adding to the ISL78223’s feature set are average current
monitoring and soft-start. The average current signal may be
used for average current limiting, current sharing circuits and
average current mode control. Additionally, the ISL78223
supports both voltage and current mode control.
The ISL78223 features complemented PWM outputs for
synchronous rectifier (SR) control. The complemented outputs
may be dynamically advanced or delayed relative to the PWM
outputs using an external control voltage.
This advanced BiCMOS design features precision deadtime
and resonant delay control, and an oscillator adjustable to
2MHz operating frequency. Additionally, Multi-Pulse
Suppression ensures alternating output pulses at low duty
cycles where pulse skipping may occur.
The ISL78223 is rated for the automotive temperature range
(-40°C to +105°C).
Features
• Adjustable resonant delay for ZVS operation
• Synchronous rectifier control outputs with adjustable
delay/advance
• Voltage or current mode control
• 3% current limit threshold
• Adjustable average current limit
• Adjustable deadtime control
• 175µA start-up current
• Supply UVLO
• Adjustable oscillator frequency up to 2MHz
• Internal over-temperature protection
• Buffered oscillator sawtooth output
• Fast current sense to output delay
• Adjustable cycle-by-cycle peak current limit
• 70ns leading edge blanking
• Multi-pulse suppression
• Pb-free (RoHS compliant)
Applications
• ZVS full-bridge converters
• Telecom and datacom power
• Wireless base station power
• File server power
• Industrial power systems
FIGURE 1. BOARD LAYOUT
10.0
0.95
0.90
0.85
0.80
0.75
0.70
0.65
0
VIN = 250V
VIN = 350V
VIN = 450V
VO = 13.1V
20 40 60 80 100
LOAD (0-125A) (%)
FIGURE 2. EFFICIENCY vs LOAD
November 20, 2014
FN7936.3
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774 | Copyright Intersil Americas LLC 2013, 2014. All Rights Reserved
Intersil (and design) is a trademark owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners.

PagesPages 20
Télécharger [ ISL78223 ]


Fiche technique recommandé

No Description détaillée Fabricant
ISL78220 6-Phase Interleaved Boost PWM Controller Intersil Corporation
Intersil Corporation
ISL78223 ZVS Full-Bridge PWM Controller Intersil Corporation
Intersil Corporation
ISL78225 4-Phase Interleaved Boost PWM Controller Intersil Corporation
Intersil Corporation
ISL78227 2-Phase Boost Controller Intersil Corporation
Intersil Corporation

US18650VTC5A

Lithium-Ion Battery

Sony
Sony
TSPC106

PCI Bus Bridge Memory Controller

ATMEL
ATMEL
TP9380

NPN SILICON RF POWER TRANSISTOR

Advanced Semiconductor
Advanced Semiconductor


www.DataSheetWiki.com    |   2020   |   Contactez-nous  |   Recherche