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RT9611A の電気的特性と機能

RT9611AのメーカーはRichtekです、この部品の機能は「Synchronous Rectified Buck MOSFET Drivers」です。


製品の詳細 ( Datasheet PDF )

部品番号 RT9611A
部品説明 Synchronous Rectified Buck MOSFET Drivers
メーカ Richtek
ロゴ Richtek ロゴ 




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RT9611A Datasheet, RT9611A PDF,ピン配置, 機能
®
RT9611A/B
Synchronous Rectified Buck MOSFET Drivers
General Description
The RT9611A/B is a high frequency, synchronous rectified,
single phase dual MOSFET driver designed to adapt from
normal MOSFET driving applications to high performance
CPU VR driving capabilities.
The RT9611A/B can be utilized under both VCC = 5V or
VCC = 12V applications. The RT9611A/B also builds in an
internal power switch to replace external boot strap diode.
The RT9611A/B can support switching frequency efficiently
up to 500kHz. The RT9611A/B has the UGATE driving
circuit and the LGATE driving circuit for synchronous
rectified DC/DC converter applications. The driving rise/
fall time capability is designed within 30ns and the shoot
through protection mechanism is designed to prevent shoot
through of high side and low side power MOSFETs. The
RT9611A/B has PWM tri-state shut down and OD input
shut down functions which can force driver output into
high impedance.
The difference of the RT9611A and the RT9611B is the
propagation delay, tUGATEpdh. The RT9611B has
comparatively large tUGATEpdh than RT9611B. Hence, the
RT9611A is usually recommended to be utilized in
performance oriented applications, such as high power
density CPU VR or GPU VR.
The RT9611A/B comes in a small footprint with 8-pin
packages. The choice of packages type includes SOP-8,
SOP-8 (Exposed Pad) and WDFN-8EL 3x3.
Features
z Drive Two N-MOSFETs
z Adaptive Shoot Through Protection
z Embedded Bootstrap Diode
z Support High Switching Frequency
z Fast Output Rise Time
z Tri-State Input for Bridge Shutdown
z Disable Control Input
z Small SOP-8, SOP-8 (Exposed Pad) and 8-Lead
WDFN Packages
z RoHS Compliant and Halogen Free
Applications
z Core Voltage Supplies for Desktop, Motherboard CPU
z High Frequency Low Profile DC/DC Converters
z High Current Low Voltage DC/DC Converters
Ordering Information
RT9611A/B
Package Type
S : SOP-8
SP : SOP-8 (Exposed Pad-Option1)
QW : WDFN-8EL 3x3 (W-Type)
Lead Plating System
G : Green (Halogen Free and Pb Free)
Z : ECO (Ecological Element with
Halogen Free and Pb free)
Long Dead Time
Short Dead Time
Note :
Richtek products are :
` RoHS compliant and compatible with the current require-
ments of IPC/JEDEC J-STD-020.
` Suitable for use in SnPb or Pb-free soldering processes.
Copyright ©2012 Richtek Technology Corporation. All rights reserved.
DS9611A/B-03 June 2012
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
1

1 Page





RT9611A pdf, ピン配列
Typical Application Circuit
RT9611A/B
ATX_12V
ATX_12V
C6
1000µF
x3
C7
10µF
x4
R1
10
RT9611A/B
R2
4 VCC
BOOT 1 1
C1
1µF
8
UGATE
5V
3
OD
PHASE 7
PWM
2 PWM
LGATE 5
GND
6
C2
1µF R3
2.2
R4
0
VIN
Q1 L1
1µH
R5
2.2
Q2
C3
3.3nF
C4
2200µF
x2
VCORE
C5
10µF
x2
Timing Diagram
PWM
LGATE
tpdlLGATE
90%
1.5V
UGATE
1.5V
tpdhUGATE
tpdlUGATE
1.5V
90%
1.5V
tpdhLGATE
Copyright ©2012 Richtek Technology Corporation. All rights reserved.
DS9611A/B-03 June 2012
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
3


3Pages


RT9611A 電子部品, 半導体
RT9611A/B
Electrical Characteristics
(VCC = 12V, TA = 25°C, unless otherwise specified)
Parameter
Power Supply Voltage
Power Supply Current
Power On Reset
POR Threshold
Hysteresis
PWM Input
Maximum Input Current
PWM Floating Voltage
PWM Rising Threshold
PWM Falling Threshold
Output Disable Input
OD Rising Threshold
Symbol
VCC
IV CC
Test Conditions
VBOOT = 12V, PWM = 0V
VPOR
VCC_hys
VCC Rising
IPWM
VPWM_fl
VPWM_rth
VPWM_fth
PWM = 0V or 5V
VCC = 12V
VOD_rth
Min Typ Max Unit
4.5 -- 13.5 V
-- 1.2 -- mA
3 4 4.4 V
-- 0.5 --
V
-- 300 --
1.6 1.8
2
2.8 --
--
-- -- 0.8
μA
V
V
V
1 1.3 1.6 V
OD Hysteresis
VOD_hys
-- 0.3 --
V
Timing
UGATE Rise Time
UGATE Fall Time
LGATE Rise Time
LGATE Fall Time
Propagation Delay
Output
RT9611A
RT9611B
tUGATEr
tUGATEf
tLGATEr
tLGATEf
tUGATEpdh
tUGATEpdl
RT9611A/B tLGATEpdh
tLGATEpdl
UGATE Drive Source
IUGATEsr
UGATE Drive Sink
LGATE Drive Source
LGATE Drive Sink
RUGATEsk
ILGATEsr
RLGATEsk
VCC = 12V, 3nF load
VCC = 12V, 3nF load
VCC = 12V, 3nF load
VCC = 12V, 3nF load
VBOOT VPHASE = 12V
See Timing Diagram
See Timing Diagram
VBOOT VPHASE = 12V
VUGATE VPHASE = 12V
VBOOT VPHASE = 12V
VCC = 12V, VLGATE = 2V
VCC = 12V
-- 25 -- ns
-- 12 -- ns
-- 24 -- ns
-- 10 -- ns
-- 22 --
-- 60 --
-- 22 -- ns
-- 20 --
-- 8 --
-- 2 --
-- 1.4 --
-- 2.2 --
-- 1.1 --
A
Ω
A
Ω
Note 1. Stresses beyond those listed Absolute Maximum Ratingsmay cause permanent damage to the device. These are
stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in
the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions may
affect device reliability.
Note 2. θJA is measured at TA = 25°C on a high effective thermal conductivity four-layer test board per JEDEC 51-7. θJC is
measured at the exposed pad of the package.
Note 3. Devices are ESD sensitive. Handling precaution is recommended.
Note 4. The device is not guaranteed to function outside its operating conditions.
Copyright ©2012 Richtek Technology Corporation. All rights reserved.
www.richtek.com
6
is a registered trademark of Richtek Technology Corporation.
DS9611A/B-03 June 2012

6 Page



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共有リンク

Link :


部品番号部品説明メーカ
RT9611A

Synchronous Rectified Buck MOSFET Drivers

Richtek
Richtek
RT9611B

Synchronous Rectified Buck MOSFET Drivers

Richtek
Richtek


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