Rainbow-electronics ATA6823 Manuel d'utilisateur

Features• PWM and Direction-controlled Driving of Four Externally-powered NMOS Transistors• A Programmable Dead Time Is Included to Avoid Peak Current

104856E–AUTO–07/07ATA6823 [Preliminary] After ramp-up of the battery voltage (power-on reset), the VCC regulator is switched on. Thereset output, /RES

114856E–AUTO–07/07ATA6823 [Preliminary]5.6.1 Transmit ModeDuring transmission, the data at the pin TX will be transferred to the bus driver to generat

124856E–AUTO–07/07ATA6823 [Preliminary] 5.7 Control Inputs EN1, EN2, DIR, PWM5.7.1 Pins EN1, EN2Any of the enable pins may be used to activate the IC

134856E–AUTO–07/07ATA6823 [Preliminary]5.8 VG RegulatorThe VG regulator is used to generate the gate voltage for the low-side driver. Its output volta

144856E–AUTO–07/07ATA6823 [Preliminary] Figure 5-5. Timing of the Drivers The delays tHxLH and tLxLH include the cross conduction time tCC.5.12 Short

154856E–AUTO–07/07ATA6823 [Preliminary]6. Absolute Maximum RatingsStresses beyond those listed under “Absolute Maximum Ratings” may cause permanent da

164856E–AUTO–07/07ATA6823 [Preliminary] 7. Thermal ResistanceParameters Symbol Value UnitThermal resistance junction to heat slug Rthjc<5 K/WTherma

174856E–AUTO–07/07ATA6823 [Preliminary]9. Electrical CharacteristicsAll parameters given are valid for 7V ≤ VBAT ≤ 18V and for –40°C ≤ϑambient ≤ 125°C

184856E–AUTO–07/07ATA6823 [Preliminary] 2.9 HIGH threshold VMODE 1 VMODE H 4.0 V A2.10 LOW threshold VMODE 1 VMODE L 0.7 V A3 Reset and Watchdog3.1VC

194856E–AUTO–07/07ATA6823 [Preliminary]3.15 Open window(5)t2780 × TOSCA3.16Output low-voltage of /RESETAt IOLRES = 1 mA 5 VOLRES0.4 V A3.17Internal p

24856E–AUTO–07/07ATA6823 [Preliminary] Figure 1-1. Block Diagram VMODE /RESETMicrocontrollerLogic ControlVCCEN1WD12VRegulatorVint 5VRegulatorOTP12 bit

204856E–AUTO–07/07ATA6823 [Preliminary] 4.12Leakage current at ground lossControl unit disconnected from groundLoss of local ground must not affect co

214856E–AUTO–07/07ATA6823 [Preliminary]6.3Period charge pump oscillatorT100911µsA6.4CP load current in VG without CP loadLoad = 0A IVGCPz100 µA D6.5CP

224856E–AUTO–07/07ATA6823 [Preliminary] 7.12Static high-side switch output high-voltage pins H1, H2ILx = –10 µA(PWM = static)VHxHstat1(7)VVBAT + VVG –

234856E–AUTO–07/07ATA6823 [Preliminary]7.27Switching level of tCC comparatorVswtcc0.653 × VVCC0.667 × VVCC0.68 × VVCCV7.28Short circuit detection v

244856E–AUTO–07/07ATA6823 [Preliminary] 10. Schaffner and Electromagnetic Compatibility10.1 Transients on Power-supply Rail (Battery)The application (

254856E–AUTO–07/07ATA6823 [Preliminary]Figure 10-3. Pulse 3a (Ri = 50Ω) Figure 10-4. Pulse 3b (Ri = 50Ω) Figure 10-5. Pulse 4 (Ri = 0.01Ω) V12V-200Vt1

264856E–AUTO–07/07ATA6823 [Preliminary] 10.2 Transients on Pin LINTransients to these pins are coupled capacitively to the IC and are valid for the ap

274856E–AUTO–07/07ATA6823 [Preliminary]13. Package Information 14. Revision History12. Ordering InformationExtended Type Number Package RemarksATA6823

4856E–AUTO–07/07Headquarters InternationalAtmel Corporation2325 Orchard ParkwaySan Jose, CA 95131USATel: 1(408) 441-0311Fax: 1(408) 487-2600Atmel Asia

34856E–AUTO–07/07ATA6823 [Preliminary]2. Pin ConfigurationFigure 2-1. Pinning QFN32 Note: YWW Date code (Y = Year - above 2000, WW = week number)ATA6

44856E–AUTO–07/07ATA6823 [Preliminary] 3. General Statement and Conventions• Parameter values given without tolerances are indicative only and not to

54856E–AUTO–07/07ATA6823 [Preliminary]4. Application4.1 General RemarkThis chapter describes the principal application for which the ATA6823 was desig

64856E–AUTO–07/07ATA6823 [Preliminary] 5.1.2 Voltage SupervisorThis block is intended to protect the IC and the external power MOS transistors against

74856E–AUTO–07/07ATA6823 [Preliminary]Pulling the EN2 pin up to the VBAT level will drive the IC into Active mode. EN2 is debounced witha time constan

84856E–AUTO–07/07ATA6823 [Preliminary] Figure 5-1. Wake-up by pin LIN VBATACTIVESLEEP45% VBATtdbtdbt < twake LINtwake LIN55% VBATttttEN1LINVBAT - 1

94856E–AUTO–07/07ATA6823 [Preliminary]5.4 5V/3.3V VCC RegulatorThe 5V/3.3V regulator is fully integrated on-chip. It requires only a 2.2 µF ceramic ca