FAIRCHILD FDMF6730 Manual
Contents
1. hd e e VIN 477 477 vec VIN LDO 5V OUT Lposv BooT xy LDO ENABLE I LDO EN vswH VOUT LDO OUT LDO OUT PGND 177 Y i FDMF6730 177 LDO ADJ LDRV z ul DRIVE HS G PASS za IM e T PWM OUT DRIVE LS Z CS OUT D PASS 2 CGND CS_PROG S_PASS O y Figure 1 Power Train Application Circuit Ordering Information einpojy diyd ninw 134 snid 18AUQ O Z94ING4 Current Rating Input Voltage Frequency Max Typical Max Device Part A V KHz Marking FDMF6730 10 6 16 1000 FDMF6730 2008 Fairchild Semiconductor Corporation 1 www fairchildsemi com FDMF6730 Rev D2 Functional Block Diagram VCC BOOT PHASE HDRV E ad ER A ce a a ee ee Se IPIE RARA En i fi LDO_5V i 5V Reg po l 1 i e VSWH LDO_EN 1 i Es NM A Li 1 T 1 i resets H 1 LDO OUT i PGND 1 i OCP LDRV i Current i LDO_ADJ 1 Trimming G_PASS 1 1 i as D_PASS 1 BS sect bee DRIVE_HS 1 1 lt ET UE 1 DRIVE LS y 2 ES IMS os a ety nd ERE ee A i i m CGND CS_OUT CS_PROG S_PASS Figure 2 Functional Block Diagram Pin Configuration O TIE 5 5 955 5 c 8 E z a gt gt gt gt gt gt gt gt gt 1 102. August 2008 FAIRCHILD A SEMICONDUCTOR FDMF6730 Driver plus FET Multi chip Module Features General Description W Over 95 efficiency The FDMF6730 is a high efficiency Driver plus MOSFET power W Internal 5V regulator for gate drive stage solution ee bel iiis PC d E m 6V 16Vi power voltage supplies It is fully compliant with the Intel Ultra DV sew input range Mobile Driver MOS uDrMOS Specification The MOSFETs and m Memes operating wequency z driver have been optimized to perform with high efficiency at Ww SMOD operation capability for light load efficiency light and medium loads ideal for compact PC devices ESA current capability IOA wih PASS FET The internal driver IC integrates two highly efficient LDOs for m Current limit set by Rpson sensing to minimize power losses internal gate drive and external circuitry The bootstrap diode is W Integrated bootstrap diode also integrated within the IC When operating with a single low side MOSFET the uDrMOS module is capable of delivering up to 5A of continuous current The PASS transistor may be easily routed in parallel with the low side MOSFET to provide up to 10A The module also incorporates an over current protection flag from an Rpgon current sense architecture Applications W Ultra Mobile PC The device comes in a 6X6 Power QFN package for improved W Notebook Computers thermal performance Typical Application
3. 16V 3 mV Load Regulation 5mA lt li oap lt 100mA 11 mV Short Circuit Current Limit 100 180 mA Adjust Input Bias Current 0 2 yA Over Current Protection CS_Prog Current 30 40 50 yA Thermal Shutdown Threshold 150 C Hysteresis 19 C Propagation Delay 2508 Tea ur oe Jem a tprHH LDRV going LO to VSWH going HI 30 ns tPDHL Drive_LS going HI to HDRV going 10 ns LO toTLH VSWH going LO to LDRV going HI 20 ns tPDLL Drive_LS going LO to LDRV going 10 ns LO 4 www fairchildsemi com FDMF6730 Rev D2 einpojy diuo NNN 134 Snid 19A11Q 0 294IN023 Description of Operation 2 Bit PWM Input The PWM input is composed of a high side drive and a low side drive input which control the high side and low side FETs respectively They can also be setup to provide asynchronous rectification low FET off and phase shutoff both FETs off Truth Table DRIVE_LS DRIVE_HS Low Side High Side MOSFET MOSFET 0 OFF OFF 1 OFF ON 1 0 ON OFF 1 1 OFF OFF PASS FET One of the most unique features of the uDrMOS is the integrated Pass FET The pass FET can be easily routed in parallel with the low side FET in order to provide up to 10A of current When not used as part of the DC DC controller it can be used in other applications such as load switching etc 5V LDO The uDrMOS conveniently incorporates a 5V LDO regulator to drive the internal logic of the IC and gates of the internal MOSFETs Adjustable LDO An
4. e c 8 39 0 8 38 5 38 0 37 5 50 10 30 70 110 150 Temperature C Figure 16 CS_Prog Current vs Temperature 8 www fairchildsemi com FDMF6730 Rev D2 einpojy diuo nini 133 Snid 19A1Q 0 2921A03 Dimensional Outline and Pad layout DN E1979 6 00 gt E 2X X A 6 00 2 a 0 10 C 2X PIN 1 IDENT TOP VIEW 0 80 MAX lo10 C poz 4 A10 08 c M Gas SIDE VIEW De SEATING PLANE 0 20 Le 2 00 10 2X 030 40X is E KEEN PNA DEN N VOUUUUUUUU ON Il c i O E 2 00 10 2X 029 4 40 10 0 20 2 TE 85 E JA 5 0L OOo ELO D 050 L E L 0 20 0 30 2 20 AlB 4 40 10 BOTTOM VIEW NOTES A DOES NOT FULLY CONFORM TO JEDEC REGISTRATION MO 220 DATED MAY 2005 B DIMENSIONS ARE IN MILLIMETERS C DIMENSIONS AND TOLERANCES PER ASME Y14 5M 1994 D DRAWING FILE NAME MLP40XREV1 Le 5 80 e 4 50 En n SOX 240 ES Ba RRR ee
5. ANN PGND 40 gt C 11 VIN PGND 23 Ee VIN A B i FOND VSWH VIN ESE HDRV LDRV a VIN VSWH ES CGND D_PASS e PHASE G PASS cal BOOT D c S_PASS icm D PASS CGND LDO_5V S_PASS 63 LDO_OUT S PASS 31 D 20 LDO ADJ EPA 30 21 82288 5 88 2 amp amp amp e 8 m w o N a o 6 r ca O a a Figure 3 6mm X 6mm 40L MLP Bottom View FDMF6730 Rev D2 www fairchildsemi com 9 NPOIN diuo HNW 134 Snid 19ALQ OFZ94INGA Pin Description Pin Name Function 1 38 40 PGND Low Side FET Source Pin Connect to GND 2 5 36 A VSWH Switch Node Pin Low Side FET Drain pin Electrically shorted to PHASE pin 6 12 14 B VIN Input Voltage Pin Input voltage for buck converter 13 HDRV HDRV pin High Side driver output Connected to High Side FET gate pin 15 24 C CGND IC Ground Ground return for driver IC 16 PHASE Switch Node Pin for easy bootstrap capacitor routing Electrically shorted to VSWH pin 17 BOOT Bootstrap Supply Input Pin Provides voltage supply to high side MOSFET driver Connect bootstrap capacitor 18 LDO_5V 5V Internal LDO Output 19 LDO_OUT Adjustable LDO Output 20 LDO_ADJ LDO Adjust Input Connect to external voltage divider to adjust LDO output 21 LDO_EN Adjustable LDO Enable Pin 1 Enable 0 Disable 22 DRIVE_LS Low Side PWM Input Connect to PWM controller 23 DRIVE_HS High Side PWM Input Connect to PWM c
6. Note 1 Package power dissipation based on 4 layer 2 square inch 2 oz copper pad Reypca is the steady state junction to PCB thermal resistance with PCB temperature referenced at VSWH pin 3 www fairchildsemi com FDMF6730 Rev D2 ejnpoyy diuo NNW 134 snid 19A1Q OF Z94INGS Recommended Operating Range The recommended operating conditions table defines the conditions for actual device operation These conditions are specified to ensure optimal performance to the datasheet specification Fairchild does not recommend exceeding them or designing to absolute maximum ratings Parameter Min Typ Max Units Voc Control Circuit Supply Voltage 4 5 5 5 5 V Vin Output Stage Supply Voltage 6 8 4 16 V Vout Output Voltage 1 5 3 3 5 V Electrical Characteristics Vin 8 4V Voc 5V Ta 25 C unless otherwise noted Parameter Symbol Conditions Min Typ Max Units Input Voltage Range Vin 6 16 V Operating Quiescent Current 2 mA Drive HS Drive LS LDO EN Logic Inputs High Level Input Vin 2 4 V Low Level Input Vit 0 4 V Input Current 2 2 yA 5V LDO Output Voltage 4 7 5 5 3 V Line Regulation 6V lt Vin lt 16V 5 mV Load Regulation 5mA lt lLoap lt 100mA 75 mV Short Circuit Current Limit 100 180 mA Adjustable LDO Adjust Voltage VADJ 0 58 0 6 0 62 V Line Regulation 6V Vin
7. 1 5 2 25 3 35 4 45 5 1 2 25 3 35 Output Voltage V Output Inductance uH FDMF6730 Rev D2 www fairchildsemi com 2 NPON diyd ninw 134 snid 18AUQ O Z94ING4 Typical Characteristics Supply Current mA Supply Current mA ge V Drive_LS Threshold Volta 0 66 5 Driver Supply Voltage V Figure 10 Supply Current vs Driver Supply o o N E a foo to Temperature C 110 Figure 12 Supply Current vs Temperature 150 o N o a 1 4 l 30 70 Temperature C 110 Figure 14 Driver LS Threshold Voltage vs Temperature 150 3 00 2 75 m a eo D D a Supply Current mA y a 600 700 Frequency kHz 800 900 1000 Figure 11 Supply Current vs Frequency ge V D co LDO EN Threshold Volta ip a 1 23 1 20 30 70 Temperature C 110 150 Figure 13 LDO_EN Threshold Voltage vs Temperature to ge V E o EN Drive HS Threshold Volta m w D a o 30 70 Temperature C 110 150 Figure 15 Driver HS Threshold Voltage vs Temperature FDMF6730 Rev D2 www fairchildsemi com einpojy diuo ninig 134 snid 18AUQ O Z94ING4 Typical Characteristics 41 0 g Current uA wo
8. EEEN B 2 10 44 ER n 0 60 EE ES i 1 0 35 0 50 TYP H 7 030 m 2 10 H 2 10 RECOMMENDED LAND PATTERN FDMF6730 Rev D2 www fairchildsemi com einpojy diu9 ninn 134 snid 19ALIQ O Z94ING4 WE FAIRCHILD AA SEMICONDUCTOR TRADEMARKS The following includes registered and unregistered trademarks and service marks owned by Fairchild Semiconductor and or its global subsidianries and is not intended to be an exhaustive list of all such trademarks Build it Now FPSTM PDP SPM The Power Franchise CorePLUS F PFS Power SPM CorePOWER FRFET PowerTrench CROSSVOLT Global Power Resource M Programmable Active Droop franchise CTL Green FPS QFE es Current Transfer Logic Green FPS e Series QSTM a Lead EcoSPAR GTo Quiet Series vara EfficentMaxTM IntelliMAX TM RapidConfigure TinyPower EZSWITCH ISOPLANAR Saving our world 1mW at a time n HMM 7 pa MegaBuck SmartMax Ti Ku re EZ MICROCOUPLER SMART START y MicroFETTM SPM MicroPak STEALTH pe Fairchild MillerDrive SuperFET Des Fairchild Semiconductor MotionMax SuperSOT 3 Ultra FRFET FACT Quiet Series Motion SPM SuperSOT 6 UniFET FACT OPTOLOGIC SuperSOT 8 VCXTM FAST OPTOPLANAR SupreMOSTM VisualMax FastvCore SyncFET FlashWriter SYSTEM O GENERAL EZSWITCH and FlashWriter are tradema
9. UT is the output of an internal current sense comparator which switches high when the current in low side MOSFET exceeds a pre program level set by the CS PROG pin This pin is low during normal operation FDMF6730 Rev D2 www fairchildsemi com einpojy diuo ninig 134 snid 18AUQ O Z94ING4 Typical Characteristics Figure 8 Power Loss vs Output Voltage Figure 9 Power Loss vs Output Inductance 16 3 5 Vin 7 84V 14 Vour 3 3V 3 0 FL 22u 12 25 20 j Fey 1MHz a 15 Few 300KHz 4 Ln 84 1 0 Vour 3 3V L 2 2uH 2 Fay 1MHz 0 5 0 0 0 0 25 50 75 100 125 150 0 4 6 8 10 PCB Temperature C loan A Figure 4 Safe Operating Area Figure 5 Power Loss vs Output Current 1 02 1 08 Vin 8 4V 1 00 1 06 amp 0 98 PN a a N El 104 3 0 96 3 S 094 amp 1 02 2 2 099 z 8 93 8 1 00 amp 090 a 0 98 0 88 0 86 0 96 300 400 500 600 700 800 900 1000 6 10 12 14 16 Switching Frequency KHz Input Voltage V Figure 6 Power Loss vs Switching Frequency Figure 7 Power Loss vs Input Voltage 1 20 1 20 Vin 8 4V Vin 8 4V Vour 3 3V 115 Ergo 10A 2s ta Fey 1MHz a Q 1 10 N N d E g 105 tc tc S 2 1 00 8 8 a gi 0 95 0 90 0 80 0 85
10. ers to do their part in stopping this practice by buying direct or from authorized distributors PRODUCT STATUS DEFINITIONS Definition of Terms Datasheet Identification Product Status Definition Datasheet contains the design specifications for product development Specifications Advance Information may change in any manner without notice Formative In Design Datasheet contains preliminary data supplementary data will be published at a later date Fairchild Semiconductor reserves the right to make changes at any time without notice to improve design Preliminary First Production Datasheet contains final specifications Fairchild Semiconductor reserves the right to Full Production make changes at any time without notice to improve the design No Identification Needed Datasheet contains specifications on a product that is discontinued by Fairchild Not In Production Semiconductor The datasheet is for reference information only Obsolete Rev 135 10 www fairchildsemi com FDMF6730 Rev D2 einpojy diyd ninw 134 snid 18AUQ O Z94ING4
11. nti Counterfeiting Policy Farichild s Anti Counterfeiting Policy is also stated on our external website www fairchildsemi com under Sales Support Counterfeiting of semiconductor parts is a growing problem in the industry All manufactures of semiconductor products are experiencing counterfeiting of their parts Customers who inadvertently purchase counterfeit parts experience many problems such as loss of brand reputation substandard performance failed application and increased cost of production and manufacturing delays Fairchild is taking strong measures to protect ourselves and our customers from the proliferation of counterfeit parts Farichild strongly encourages customers to purchase Farichild parts either directly from Fairchild or from Authorized Fairchild Distributors who are listed by country on our web page cited above Products customers buy either from fairchild directly or from Authorized Fairchild Distributors are genuine parts have full traceability meet Fairchild s quality standards for handing and storage and provide access to Farichild s full range of up to date technical and product information Fairchild and our Authorized Distributors will stand behind all warranties and will appropriately address and warranty issues that may arise Fairchild will not provide any warranty coverage or other assistance for parts bought from Unauthorized Sources Farichild is committed to committed to combat this global problem and encourage our custom
12. ontroller 25 VCC Driver VCC Connect to 5V 26 CS_OUT Current Sense Output 1 Over current Fault 0 No Fault 27 CS_PROG Current Sense Program 28 35 D D_PASS Pass FET Drain Pin Connect to VSWH pad for higher output current 29 NC No Connect This pin must be floated Must not be connected to any pin 30 33 S_PASS Pass FET Source Pin Connect to PGND pad for higher output current 34 G_PASS Pass FET Gate Pin Connect to LDRV pin for higher output current 37 LDRV LDRV pin Low Side driver output Connect to G_PASS pin for higher output current Absolute Maximum Rating Stresses exceeding the absolute maximum rating may damage the device The device may not function or be operable above the recommended operating conditions and stressing these parts to these levels is not recommended In addition extended exposure to stresses above the recommended operating conditions may affect the device reliability The absolute maximum rating are stress rat ings only Parameter Min Max Units Vcc Drive LS Drive HS LDO EN CS Prog CS Out to GND 0 3 6 V Vin to PGND 0 3 20 V BOOT to VSWH 0 3 6 V VSWH to PGND 1 0 27 V BOOT to PGND 0 3 27 V lovav Vin 8 4V Vo 3 3V few 1MHz Toop 130 C 10 A lo ek Vin 8 4V tpuLse 10us 35 A Roypce Junction to PCB Thermal Resistance note 1 5 5 C W Pr Tpcg 130 C 33 W Operating and Storage Junction Temperature Range 55 150 C
13. other feature of the part is the adjustable 100mA LDO The LDO output voltage is easily configured with a resistor divider Current Limit The part also has current limit flag which is set by an internal OCP topology Applications Section Input Capacitor A High frequency 4 7ceramic X5R must be connected directly from Vin to GND Bootstrap Circuit The bootstrap circuit uses a charge storage capacitor and an external diode A minimum of 0 1uF high frequency capacitor must be connected between the BOOT and PHASE pin The PHASE pin is already internally connected to the switch node 5V LDO A minimum of 4 7uF ceramic X5R type must be connected from LDO_5V pin to GND to ensure stable operation and to provide high frequency bypassing for low side driver This LDO can provide power to the internal logic circuitry and gate drivers via a 10Ohm resistor A high frequency 1uF ceramic capacitor must be placed from Vcc to GND Adjustable LDO A minimum of 10UF ceramic X5R type must be connected close from this pin to GND to insure stable operation for a range of 2 5V to 5V outputs For output voltages of 0 6V to 2 5V the minimum capacitance must be 22uF ceramic type A minimum of 1mA load current must be connected from this pin to GND LDO ADJ voltage 0 6V typical LDO EN Adjustable LDO enable pin 1 Enable 0 Disable Over Current Protection A resistor connected from the VSWH pin and this pin programs the over current threshold point CS O
14. rks of System General Corporation used under license by Fairchild Semiconductor DISCLAIMER FAIRCHILD SEMICONDUCTOR RESERVES THE RIGHT TO MAKE CHANGES WITHOUT FURTHER NOTICE TO ANY PRODUCTS HEREIN TO IMPROVE RELIABILITY FUNCTION OR DESIGN FAIRCHILD DOES NOT ASSUME ANY LIABILITY ARISING OUT OF THE APPLICATION OR USE OF ANY PRODUCT OR CIRCUIT DESCRIBED HEREIN NEITHER DOES IT CONVEY ANY LICENSE UNDER ITS PATENT RIGHTS NOR THE RIGHTS OF OTHERS THESE SPECIFICATIONS DO NOT EXPAND THE TERMS OF FAIRCHILD S WORLDWIDE TERMS AND CONDITIONS SPECIFICALLY THE WARRANTY THEREIN WHICH COVERS THESE PRODUCTS LIFE SUPPORT POLICY FAIRCHILD S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF FAIRCHILD SEMICONDUCTOR CORPORATION As used herein 1 Life support devices or systems are devices or systems which a are 2 intended for surgical implant into the body or b support or sustain life and c whose failure to perform when properly used in accordance with instructions for use provided in the labeling can be reasonably expected to result in a significant injury of the user A critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system or to affect its safety or effectiveness ANTI COUNTERFEITING POLICY Fairchild Semiconductor Corporation s A
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FAIRCHILD FDMF6730 Manual