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PDF RT9602 Data sheet ( Hoja de datos )
| Número de pieza | RT9602 | |
| Descripción | Dual Channel Synchronous-Rectified Buck MOSFET Driver | |
| Fabricantes | Richtek | |
| Logotipo |  |
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RT9602
Dual Channel Synchronous-Rectified Buck MOSFET Driver
General Description
The RT9602 is a dual power channel MOSFET driver
specifically designed to drive four power N-Channel
MOSFETs in a synchronous-rectified buck converter
topology. These drivers combined with RT9237/A and
RT9241A/B series of Multi-Phase Buck PWM controllers
provide a complete core voltage regulator solution for
advanced microprocessors.
The RT9602 can provide flexible gate driving for both high
side and low side drivers. This gives more flexibility of
MOSFET selection.
The output drivers in the RT9602 have the capability to
drive a 3000pF load with a 40nS propagation delay and
80nS transition time. This device implements bootstrapping
on the upper gates with only a single external capacitor
required for each power channel. This reduces
implementation complexity and allows the use of higher
performance, cost effective,N-Channel MOSFETs.Adaptive
shoot-through protect-ion is integrated to prevent both
MOSFETs from conducting simultaneously.
The RT9602 can detect high side MOSFET drain-to-source
electrical short at power on and pull the 12V power by low
side MOS and cause power supply to go into over current
shutdown to prevent damage of CPU.
Ordering Information
RT9602
Package Type
S : SOP-14
Operating Temperature Range
P : Pb Free with Commercial Standard
G : Green (Halogen Free with Commer-
cial Standard)
Note :
Richtek Pb-free and Green 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.
` 100%matte tin (Sn) plating.
Features
z Drives Four N-Channel MOSFETs
z Adaptive Shoot-Through Protection
z Internal Bootstrap Devices
z Small SOP-14 Package
z 5V to 12V Gate-Drive Voltages for Optimal Efficiency
z Tri-State Input for Bridge Shutdown
z Supply Under-Voltage Protection
z Power ON Over-Voltage Protection
z RoHS Compliant and 100% Lead (Pb)-Free
Applications
z Core Voltage Supplies for Intel Pentium® 4 and AMD®
AthlonTM Microprocessors
z High Frequency Low Profile DC-DC Converters
z High Current Low Voltage DC-DC Converters
Pin Configurations
(TOP VIEW)
PWM1
PWM2
GND
LGATE1
PVCC
PGND
LGATE2
2
3
4
5
6
7
14 VCC
13 PHASE1
12 UGATE1
11 BOOT1
10 BOOT2
9 UGATE2
8 PHASE2
SOP-14
DS9602-09 April 2008
www.richtek.com
1
1 page  
RT9602
Electrical Characteristics
Parameter
Symbol
Test Conditions
Min Typ Max Unit
VCC Supply Current
Bias Supply Current
IVCC
fPWM = 250kHz, VPVCC = 12V,
CBOOT = 0.1μF, RPHASE = 20Ω
--
5.5
8
mA
Power Supply Current
Power-On Reset
IPVCC
fPWM = 250kHz, VPVCC = 12V,
CBOOT = 0.1μF, RPHASE = 20Ω
--
5.5 10 mA
VCC Rising Threshold
Hysteresis
8.6 9.9 10.7
0.6 1.35 --
V
V
PWM Input
Maximum Input Current
PWM Floating Voltage
VPWM = 0 or 5V
Vcc = 12V
80 127 150 μA
1.1 2.1 3.7
V
PWM Rising Threshold
3.3 3.7 4.3
V
PWM Falling Threshold
1.0 1.26 1.5
V
UGATE Rise Time
LGATE Rise Time
UGATE Fall Time
LGATE Fall Time
UGATE Turn-Off Propagation Delay
LGATE Turn-Off Propagation Delay
Shutdown Window
VPVCC = VVCC = 12V, 3nF load -- 30 -- ns
VPVCC = VVCC = 12V, 3nF load
--
30
--
ns
VPVCC = VVCC = 12V, 3nF load -- 40 -- ns
VPVCC = VVCC = 12V, 3nF load
--
30
--
ns
VVCC = VPVCC = 12V, 3nF load -- 60 -- ns
VVCC = VPVCC = 12V, 3nF load
--
45
--
ns
1.26 -- 3.7 V
Output
Upper Drive Source
Upper Drive Sink
Lower Drive Source
Lower Drive Sink
RUGATE VVCC = 12V, VPVCC = 12V
RUGATE VVCC = 12V, VPVCC = 12V
RLGATE VVCC = 12V, VPVCC = 12V
RLGATE VVCC = VPVCC = 12V
-- 1.75 3.0
-- 2.8 5.0
-- 1.9 3.0
-- 1.6 3.0
Ω
Ω
Ω
Ω
Note 1. Stresses listed as the above "Absolute Maximum Ratings" may cause permanent damage to the device. These are for
stress ratings. 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 for extended
periods may remain possibility to affect device reliability.
Note 2. θJA is measured in the natural convection at TA = 25°C on a low effective thermal conductivity test board of
JEDEC 51-3 thermal measurement standard.
Note 3. Devices are ESD sensitive. Handling precaution is recommended.
DS9602-09 April 2008
www.richtek.com
5
5 Page 
Outline Dimension
J
RT9602
AH
M
B
F
C
I
D
Symbol
A
B
C
D
F
H
I
J
M
Dimensions In Millimeters
Min Max
8.534
8.738
3.810
3.988
1.346
1.753
0.330
0.508
1.194
1.346
0.178
0.254
0.102
0.254
5.791
6.198
0.406
1.270
Dimensions In Inches
Min Max
0.336
0.344
0.150
0.157
0.053
0.069
0.013
0.020
0.047
0.053
0.007
0.010
0.004
0.010
0.228
0.244
0.016
0.050
14–Lead SOP Plastic Package
Richtek Technology Corporation
Headquarter
5F, No. 20, Taiyuen Street, Chupei City
Hsinchu, Taiwan, R.O.C.
Tel: (8863)5526789 Fax: (8863)5526611
Richtek Technology Corporation
Taipei Office (Marketing)
8F, No. 137, Lane 235, Paochiao Road, Hsintien City
Taipei County, Taiwan, R.O.C.
Tel: (8862)89191466 Fax: (8862)89191465
Email: [email protected]
Information that is provided by Richtek Technology Corporation is believed to be accurate and reliable. Richtek reserves the right to make any change in circuit design,
specification or other related things if necessary without notice at any time. No third party intellectual property infringement of the applications should be guaranteed
by users when integrating Richtek products into any application. No legal responsibility for any said applications is assumed by Richtek.
DS9602-09 April 2008
www.richtek.com
11
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet RT9602.PDF ] | |
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