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RT9629A の電気的特性と機能

RT9629AのメーカーはRichtekです、この部品の機能は「Triple-Channel Synchronous Rectified Buck MOSFET Driver」です。


製品の詳細 ( Datasheet PDF )

部品番号 RT9629A
部品説明 Triple-Channel Synchronous Rectified Buck MOSFET Driver
メーカ Richtek
ロゴ Richtek ロゴ 




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RT9629A Datasheet, RT9629A PDF,ピン配置, 機能
®
RT9629A
Triple-Channel Synchronous Rectified Buck MOSFET
Driver
General Description
The RT9629A is a high frequency, triple-channel
synchronous rectified buck MOSFET driver specifically
designed to drive six power N-MOSFETs. The part is
promoted to pair with Richtek's multiphase buck PWM
controller family for high-density power supply
implementation. The output drivers of RT9629A can
efficiently switch power MOSFETs at frequency 300kHz
typically. Operating in higher frequency should consider
the thermal dissipation carefully. The device implements
bootstrapping on the upper gate with only an external
capacitor and a diode required. This reduces circuit
complexity and allows the use of higher performance, cost
effective N-MOSFETs. All drivers incorporate adaptive
shoot-through protection to prevent upper and lower
MOSFETs from conducting simultaneously and shorting
the input supply. The RT9629A has also detected the fault
condition during initial start-up before the multi-phase PWM
controller takes control. As a result, the input supply will
latch into the shutdown state. The RT9629A comes in a
small footprint package with WQFN-24L 5x5 package.
Features
z Drive Six N-MOSFETs for 3-Phase Buck PWM Control
z Shoot Through Protection
z Embedded Bootstrap Diode
z Support High Switching Frequency
z Fast Output Rising Time
z Tri-State PWM Input for Output Shutdown
z Enable Control
z Small 24-Lead WQFN Package
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
z Core Voltage Supplies for GFX Card
Marking Information
RT9629A
ZQW
YMDNN
RT9629AZQW : Product Number
YMDNN : Date Code
Simplified Application Circuit
12V
PWM1
PWM2
PWM3
Chip Enable
VCCx
RT9629A
PHASE1
PWM1
PWM2
PWM3 PHASE2
EN1
EN2
EN3 PHASE3
GND
VIN
L1
VOUT
L2
L3
Copyright ©2012 Richtek Technology Corporation. All rights reserved.
DS9629A-03 October 2012
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
1

1 Page





RT9629A pdf, ピン配列
Function Block Diagram
VCC1
VCC2
POR
EN1
Internal
VDD
Enable
Detect
POR
PWM1
Tri-State
Detect
EN2
Internal
VDD
Enable
Detect
PWM2
Tri-State
Detect
EN3
Internal
VDD
Enable
Detect
PWM3
Tri-State
Detect
Bootstrap
Control
Shoot-Through
Protection
Turn Off
Detection
Shoot-Through
Protection
VCC1
VCC1
VCC2
Bootstrap
Control
Shoot-Through
Protection
Turn Off
Detection
Shoot-Through
Protection
VCC1
Bootstrap
Control
Shoot-Through
Protection
Turn Off
Detection
Shoot-Through
Protection
VCC2
RT9629A
BOOT1
UGATE1
PHASE1
LGATE1
GND
BOOT2
UGATE2
PHASE2
LGATE2
GND
BOOT3
UGATE3
PHASE3
LGATE3
GND
Copyright ©2012 Richtek Technology Corporation. All rights reserved.
DS9629A-03 October 2012
is a registered trademark of Richtek Technology Corporation.
www.richtek.com
3


3Pages


RT9629A 電子部品, 半導体
RT9629A
Parameter
Symbol
Test Conditions
EN Input
ENx Rising Threshold
ENx Falling Threshold
VENH
VENL
PWM Input
Maximum Input Current IPWM
PWMx Floating Voltage VPWM_fl
PWMx Rising Threshold VPWM_rth
PWMx Falling Threshold VPWM_fth
Timing
VPWMx = 0V or 5V
PWMx = Open
UGATEx Rising Time tUGATEr 3nF load
UGATEx Falling Time
LGATEx Rising Time
LGATEx Falling Time
Propagation Delay
Output
tUGATEf
tLGATEr
tLGATEf
tUGATEpgh
tUGATEpdl
tLGATEpdh
tLGATEpdl
3nF load
3nF load
3nF load
VBOOTx VPHASEx = 12V
See Timing Diagram
See Timing Diagram
UGATEx Drive Source
UGATEx Drive Sink
LGATEx Drive Source
LGATEx Drive Sink
RUGATEsr
RUGATEsk
RLGATEsr
RLGATEsk
VBOOT VPHASE = 12V, ISource = 100mA
VBOOT VPHASE = 12V, ISink = 100mA
ISource = 100mA
ISink = 100mA
Min Typ Max Unit
-- 1.3 1.6
0.7 1
--
V
V
-- 160 --
-- 1.8 --
2.3 2.8 3.2
0.7 1.1 1.4
μA
V
V
V
-- 25 -- ns
-- 12 -- ns
-- 24 -- ns
-- 10 -- ns
-- 30 --
ns
-- 22 --
-- 30 --
ns
-- 8 --
-- 1.7 --
-- 1.4 --
-- 1.6 --
-- 1.1 --
Ω
Ω
Ω
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.
DS9629A-03 October 2012

6 Page



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共有リンク

Link :


部品番号部品説明メーカ
RT9629A

Triple-Channel Synchronous Rectified Buck MOSFET Driver

Richtek
Richtek
RT9629B

Triple-Channel Synchronous Rectified Buck MOSFET Driver

Richtek
Richtek


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