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AR2003FV PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 AR2003FV
기능 ACTIVE/SYNCHRONOUS RECTIFICATION CONTROLLER
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AR2003FV 데이터시트, 핀배열, 회로
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, 반도체, 판매, 대치품
Functional Block Diagram
AR2003FV
VCC
SFB
TOFF/EN
VD
VS
OVS
Rupper
Rlower
AGND
Enable Control
Off Timer
1.5V
VTHOFF
VTHON
General
Control Logic
& Exception
Handling
AVDD
LDO
UVLO
Vref
OVP
Vref
Driver
AVDD-2V
GATE
On Timer
AVDD
TON
DGATE
SYNC
GND
AR2003FV
Document number: DS37473 Rev. 3 - 2
4 of 15
www.diodes.com
December 2014
© Diodes Incorporated

4페이지










AR2003FV 전자부품, 판매, 대치품
AR2003FV
Electrical Characteristics (@TA = +25°C, unless otherwise specified.) (Cont.)
Symbol
Parameter
Over Voltage Protection
VOVP0H
Output Over Voltage High Threshold when
OVS = 0
VOVP0L
Output Over Voltage Low Threshold when
OVS = 0
Synchronization
VTHSYNC
SYNC Falling Threshold
TSDLY
SYNC Propagation Delay (Note 8)
RSYNC
Gate Driver
RGUP
RGDN
SYNC Pull Up Resistance (Note 8)
Gate Pull up Resistance Enabled
Gate Pull Down Resistance Enabled
VOHG
Gate Output High Voltage
VOLG
Gate Output Low Voltage
Tfgate
Gate Fall Time
Trgate
Gate Rise Time
TDIS Disable Delay (note 8)
Exception Handling
Tover
Trecover
Over Temperature
Temperature to Recover from Over
Temperature Exception
Tdgate
Delay of Turn On Pull Down MOSFET
Conditions
Min Typ Max Unit
6 V
5.4 V
Gate Output from High to Low VAVDD-2.4 VAVDD-2.0 VAVDD-1.6
SYNC falling to Gate Falling
10%, 4.5V < VCC < 5.5V
40 70
Internal Resistance from SYNC
to VCC, 4.5V < VCC < 5.5V
1.6
2.0
2.4
V
ns
K
Igate=-100mA
Igate=100mA
Igate=-100mA, VCC=5V
Igate=100mA, VCC>10V
Igate=100mA, VCC=0V
4V to 1V, Cgate = 3300pf
10V to 1V, Cgate=3300pf
1V to 4V, Cgate = 3300pf
1V to 10V, Cgate = 3300pf
EN falling to Gate falling
2.3 4
1.1 2
4.7 --
9.5 --
V
-- 0.3
14 30
20 35
16 35 ns
25 40
160 200
Cdgate=400pf
+150 °C
+125 °C
1.5 uS
Note 8: Guaranteed by design.
AR2003FV
Document number: DS37473 Rev. 3 - 2
7 of 15
www.diodes.com
December 2014
© Diodes Incorporated

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AR2003FV

ACTIVE/SYNCHRONOUS RECTIFICATION CONTROLLER

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