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PDF ( 数据手册 , 数据表 ) AR2003FV

零件编号 AR2003FV
描述 ACTIVE/SYNCHRONOUS RECTIFICATION CONTROLLER
制造商 Diodes
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AR2003FV 数据手册, 描述, 功能
AR2003FV
ACTIVE/SYNCHRONOUS RECTIFICATION CONTROLLER
Description
The AR2003FV is Active/Synchronous Rectification Controller,
providing output voltage from 4.5V to 21V. Using internal drain-to-
source voltage sensing, the AR2003FV is ideal for Fly-back, LLC-
resonant and other power supply architectures. It has SFB pin that
can eliminate the external feedback resistor when target output
voltage is 5V or 12V.
The small footprint of the AR2003FV makes it ideal for space
constrained applications.
Intelligent features of this IC are the Minimum Off Time (TOFF) and
Minimum on Time (TON), these features blank the noise generated
during the turn on and turn off instances of the power FET. Light load
detection for improved efficiency at light and no load is implemented.
Other features include Under Voltage Lock Out (UVLO), SYNC
feature for CCM operation and low turn off threshold voltage for
improved efficiency.
Pin Assignments
(Top View)
AGND 3
TON
2
NC
1
14 VCC
TOFF/EN 4
13 GND
SFB 5
VD 12 DGATE
OVS 6
11 SYNC
NC 7
8
VS
10 GATE
9
VD
V-DFN3535-14
Features
Primary-Side or Secondary-side Active/Synchronous
Rectification, Optimized for Systems with Dynamic Voltage
Scaling Capabilities
Frequency of Operation up to 600kHz
Suitable for Discontinuous (DCM), Continuous (CCM) and
Critical (CrCM) Conduction Mode
Minimum On-time and Off-time to Blanking Turn-on/off
Oscillations
Light Load Detection and Sleep Mode
Drain Voltage Rating of 200V
Recommended Operating Voltage from 4.5V up to 21V
Low Component Count.
Low Under Voltage Lockout
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
Applications
USB PD Adaptor
AC-DC Battery Charger
Fly-back Conversion
PC Power Supply
SMPS
Power Adaptors
Auxiliary Power Supplies
PoE Power Devices
Notes:
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See http://www.diodes.com/quality/lead_free.html for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green"
and Lead-free.
3. Halogen- and Antimony-free "Green” products are defined as those which contain <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
AR2003FV
Document number: DS37473 Rev. 3 - 2
1 of 15
www.diodes.com
December 2014
© Diodes Incorporated







AR2003FV pdf, 数据表
Typical Performance Characteristics
THRESHOLD VOLTAGE
vs
TEMPERATURE
3.2
3.1
3 VCCON
2.9
2.8 VCCOFF
2.7
2.6
-50 -25 0 25 50 75 100 125 150
TJ - Temperature - °C
Figure 1.
SUPPLY CURRENT
vs
SWITCHING FREQUENCY
20
16
CGATE = 3.3nF
12
8
CGATE = 0nF
4
0
0 100 200 300 400 500 600 700
fsw - Switching Frequency - KHz
Figure 3.
AR2003FV
BIAS SUPPLY CURRENT
vs
TEMPERATURE
2500
2000
VCC = 5 V, No Gate Switching
1500
1000
500
0
-50
-25
0
25 50 75
TJ - Temperature - °C
Figure 2.
100 125 150
-9.3
-9.5
-9.7
-9.9
-10.1
-10.3
-10.5
-10.7
-50
-25
ENABLE CURRENT
vs
TEMPERATURE
0 25 50 75 100 125 150
TJ - Temperature - °C
Figure 4.
AR2003FV
Document number: DS37473 Rev. 3 - 2
8 of 15
www.diodes.com
December 2014
© Diodes Incorporated














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