View RT9600_385568.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

Preliminary
RT9600
Synchronous-Rectified Buck MOSFET Drivers
General Description
The RT9600 is a high frequency, dual MOSFET driver specifically designed to drive two power NChannel MOSFETs in a synchronous-rectified buck converter topology. This driver combined with a RT9237 Multi-Phase Buck PWM controller form a complete core-voltage regulator solution for advanced microprocessors. The RT9600 drives both the lower/upper gate in a synchronous-rectifier bridge to 12V. Independent driving of upper gate through PVCC pin is achievable. Recommended PVCC ranges are from 8 to 12V for Rds(on) concern. This drive-voltage flexibility provides the advantage of optimizing applications involving trade-offs between switching losses and conduction losses. The output drivers in the RT9600 have the capacity to efficiently switch power MOSFETs at frequencies up to 2MHz. Each driver is capable of driving a 3000pF load with a 30ns propagation delay and 50ns external higher transition capacitor time. RT9600 This implements reduces N-Channel from bootstrapping on the upper gate with only an required. implementation complexity and allows the use of performance, cost effective, to prevent both MOSFETs. Adaptive shoot-through protection is integrated MOSFETs conducting simultaneously.
Features
Drives Two N-Channel MOSFETs Adaptive Shoot-Through Protection Internal Bootstrap Device Supports High Switching Frequency - Fast Output Rise Time - Propagation Delay 30ns Small SOP-8 Package Dual Gate-Drive Voltages for Optimal Efficiency Three-State Input for Bridge Shutdown Supply Under Voltage Protection High Side Short Circuit Protection
Applications
Core Voltage Supplies for Intel Pentium AMD Athlon
TM
4,
Microprocessors
High Frequency Low Profile DC-DC Converters High Current Low Voltage DC-DC Converters
Pin Configurations
Part Number RT9600CS (Plastic SOP-8) Pin Configurations TOP VIEW
UGATE 1 BOOT 2 PWM 3 GND 4 8 PHASE 7 PVCC 6 VCC 5 LGATE
Ordering Information
RT9600 Package Type S : SOP-8 Operating temperature range C: Commercial standard
DS9600-00 July 2001
www.richtek-ic.com.tw
1
RT9600
Pin Description
Pin No. Pin Name 1 2 3 4 5 6 7 8 UGATE BOOT PWM GND LGATE VCC PVCC PHASE Pin Function
Preliminary
Upper Gate Drive Output. Connect to gate of high-side power N-Channel MOSFET Floating bootstrap supply pin for upper gate drive. Input PWM signal for controlling the driver. Ground Lower gate drive output. Connect to gate of low-side power N-Channel MOSFET. +12V Supply Voltage Upper Gate Drive Supply Bias. Typical +12V Connect this pin to the source of the high-side MOSFET and the drain of the low-side MOSFET
Function Block Diagram
PVCC BOOT VCC Control Logic Shootthrough Protect VCC High Side Short-CKT Protection LGATE UGATE Phase
Internal 5V 500K PWM 500K
GND
Typical Application Circuit
+12V
C8 1F +12V 6 VCC 7 PVCC C13 1F 3 2 BOOT 1 UGATE PHASE 8 C11 1F
C9 100F SANYO OS-CON 16V Q3 PHB83NO3LT L3 1H VCORE C15 1000F C16 1000F ISEN2 ISN2
RT9600
PWM GND 4 LGATE
PWM
5 Q4 PHB95NO3LT R10 2.4K R13 2.4K
There 2 PCB trace have to parallel and place R near to PWM IC
www.richtek-ic.com.tw
DS9600-00 July 2001
2
Preliminary Absolute Maximum Ratings
Supply Voltage (VCC) Supply Voltage (PVCC) BOOT Voltage Input Voltage UGATE LGATE EDS Level HBM MM Power Dissipation, PD @ TA = 25C SOP-8 Package Thermal Resistance SOP-8, JA Ambient Temperature Range Operating Junction Temperature Lead Temperature (Soldering, 10 sec.) Storage Temperature Range 160C /W 0C ~ 85C 125C 300C -65C ~ 150C 0.625W 2KV 200V 12V VCC + 0.3V 12V
RT9600
GND - 0.3V to 7V VPHASE - 0.3V to VBOOT + 0.3V GND - 0.3V To VPVCC + 0.3V
Electrical Characteristics
(VIN = 5V, CIN = COUT = 1F, TA = 25C, unless otherwise specified) Parameter VCC Supply Current Bias Supply Current Power Supply Current Power-On Reset VCC Rising Threshold VCC Falling Threshold Output VVCC = 12V, VPVCC = 8V, Instantaneous VVCC = VPVCC = 12V, Instantaneous VVCC = 12V, VPVCC = 8V VVCC = 12V, VPVCC = 12V VVCC = 12V, VPVCC = 12V, Instantaneous. ------1.7 3 4 2.6 3 1.3 -A ----- A --9.2 8.1 --V V IVCC IPVCC fPWM = 1MHz, VPVCC = 12V fPWM = 1MHz, VPVCC = 12V, Cboot=0.1F --3 1.5 --mA mA Symbol Test Conditions Min Typ Max Units
Upper Drive Source
IUGATE
Upper Drive Sink Lower Drive Source Lower Drive Sink
RUGATE ILGATE
RLGATE VVCC = VPVCC = 12V
To be continued
DS9600-00 July 2001
www.richtek-ic.com.tw
3
RT9600
Parameter PWM Input Input Current PWM Rising Threshold PWM Falling Threshold UGATE Rise Time LGATE Rise Time UGATE Fall Time LGATE Fall Time UGATE Turn-Off Propagation Delay LGATE Turn-Off Propagation Delay Shutdown Window Shutdown Holdoff Time Symbol
Preliminary
Test Conditions Min ---VPVCC = VVCC = 12V, 3nF load VPVCC = VVCC = 12V, 3nF load VPVCC = VVCC = 12V, 3nF load VPVCC = VVCC = 12V, 3nF load VVCC = VPVCC = 12V, 3nF load VVCC = VPVCC = 12V, 3nF load ------1.5 -Typ 15 3.7 1.3 30 30 40 30 30 20 -230 Max ---------3.6 -Units A V V ns ns ns ns ns ns V ns
VPWM = 0 or 5V
www.richtek-ic.com.tw
DS9600-00 July 2001
4
Preliminary Package Information
RT9600
H A M
JB
F
C D I
Symbol A B C D F H I J M
Dimensions In Millimeters Min 4.801 3.810 1.346 0.330 1.194 0.178 0.102 5.791 0.406 Max 5.004 3.988 1.753 0.508 1.346 0.254 0.254 6.198 1.270
Dimensions In Inches Min 0.189 0.150 0.053 0.013 0.047 0.007 0.004 0.228 0.016 Max 0.197 0.157 0.069 0.020 0.053 0.010 0.010 0.244 0.050
8-Lead SOP Plastic Package
DS9600-00 July 2001
www.richtek-ic.com.tw
5
RT9600
Preliminary
RICHTEK TECHNOLOGY CORP.
Headquarter
6F, No. 35, Hsintai Road, Chupei City Hsinchu, Taiwan, R.O.C. Tel: (8863)5510047 Fax: (8863)5537749
RICHTEK TECHNOLOGY CORP.
Taipei Office (Marketing)
8F-1, No. 137, Lane 235, Paochiao Road, Hsintien City Taipei County, Taiwan, R.O.C. Tel: (8862)89191466 Fax: (8862)89191465 Email: marketing@richtek-ic.com.tw
www.richtek-ic.com.tw
DS9600-00 July 2001
6

▲Up To Search▲

Price & Availability of RT9600

	To Download RT9600 Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .