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FAN65004B Dataheets PDF



Part Number FAN65004B
Manufacturers ON Semiconductor
Logo ON Semiconductor
Description PWM Buck Regulator
Datasheet FAN65004B DatasheetFAN65004B Datasheet (PDF)

PWM Buck Regulator, Synchronous, Voltage Mode, High Performance, 65 V, 6 A FAN65004B www.onsemi.com Description FAN65004B is a wide VIN highly efficient synchronous buck regulator, with integrated high side and low side power MOSFETs. The device incorporates a fixed frequency voltage mode PWM controller supporting a wide voltage range from 4.5 V to 65 V and can handle continuous currents up to 6 A. FAN65004B includes a 0.67% accurate reference voltage to achieve tight regulation. The swi.

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PWM Buck Regulator, Synchronous, Voltage Mode, High Performance, 65 V, 6 A FAN65004B www.onsemi.com Description FAN65004B is a wide VIN highly efficient synchronous buck regulator, with integrated high side and low side power MOSFETs. The device incorporates a fixed frequency voltage mode PWM controller supporting a wide voltage range from 4.5 V to 65 V and can handle continuous currents up to 6 A. FAN65004B includes a 0.67% accurate reference voltage to achieve tight regulation. The switching frequency can be programmed from PQFN35 6x6 CASE 483BE 100 kHz to 1 MHz. To improve efficiency at light load condition, the device can be set to discontinuous conduction mode with pulse MARKING DIAGRAM skipping operation. FAN65004B has dual LDOs to minimize power loss and integrated current sense circuit that provides cycle−by−cycle current limiting. This single phase buck regulator offers complete protection features including Over current protection, Thermal shutdown, Under−voltage lockout, Over voltage protection, Under voltage protection and Short ZXYYKK FAN 65004B 1 −circuit protection. FAN65004B uses ON Semiconductor’s high performance PowerTrench® MOSFETs that reduces ringing in switching applications. FAN65004B integrates the controller, driver, and power MOSFETs into a thermally enhanced, compact 6 x 6 mm PQFN Z = Assembly Location X = Year / Lead Free YY = Week KK = Lot FAN65004B = Specific Device Code package. With an integrated approach, the complete DC/DC converter is optimized from the controller and driver to MOSFET switching performance, delivering a high power density solution. Features ORDERING INFORMATION See detailed ordering and shipping information on page 23 of this data sheet. • Wide Input Voltage Range: 4.5 V to 65 V • Continuous Output Current: 6 A • Fixed Frequency Voltage Mode PWM Control with Input Voltage Feed−forward • High Performance Low Profile 6 mm x 6 mm PQFN • 0.6 V Reference Voltage with 0.67% Accuracy • Adjustable Switching Frequency: 100 kHz to 1 MHz Package • This Device is Pb−Free and RoHS Compliant • Dual LDOs for Single Supply Operation and to Reduce Power Loss • Selectable CCM PWM Mode or PFM Mode for Light Loads • External Compensation for Wide Operation Range • Adjustable Soft−Start & Pre−Bias Startup • Enable Function with Adjustable Input Voltage Under−Voltage−Lock−Out (UVLO) Applications • High Voltage POL Module • Telecommunications: Base Station Power Supplies • Networking: Computing, Battery Management Systems, USB−PD • Industrial Equipment: Automation, Power Tools, Slot Machines • Power Good Indicator • Over Current Protection, Thermal Shutdown, Over Voltage Protection, Under Voltage Protection and Short−circuit Protection © Semiconductor Components Industries, LLC, 2017 1 November, 2019 − Rev. 2 Publication Order Number: FAN65004B/D FAN65004B TYPICAL APPLICATION R2 C2 R3 EN / UVLO C4 PVCC R4 C5 VCC MODE C6 SS RT R6 R7 PWM Controller with Driver RBOOT C3 HVBIAS BOOT ILIM AGND PGND PH VIN C1 VCC SYNC R5 PGOOD EXTBIAS L SW C7 COMP R8 C8 FB VIN 4.5 V~65 V VO R9 R10 C10 C9 R11 Figure 1. Typical Application Table 1. APPLICATION DESIGN EXAMPLE CO from L to be VO_RIPPLE CO from CO from CO to be R11 VIN (V) VO (V) L (mH) used (mH) (mF) VOS (mF) VUS (mF) used R10 (W) (W) R9 R8 C9 C7 C8 (W) (W) (F) (F) (F) Phase fCO margin RT (Hz) (⁰) (=R6) (W) 35 24 16.762 2.6 30.9 65.2 718.2 18.0k 69.4 35 28 12.444 2.2 22.7 83.5 613.4 22.6k 67.5 35 30 9.524 2.1 19.8 103.6 571.6 22.6k 67.5 48 24 26.667 2.6 30.9 30.9 718.2 48 28 25.926 22.00 2.2 22.7 31.4 75.2 28010 613.4 365 1.0k 2.7n 220n 470p 3.75E+04 48 30 25.000 2.1 19.8 32.3 571.6 60 24 32.000 2.6 30.9 20.8 718.2 60 28 33.185 2.2 22.7 19.9 613.4 60 30 33.333 2.1 19.8 19.8 571.6 NOTE: *Iout = 5 A, Fsw = 300 KHz www.onsemi.com 2 FAN65004B BLOCK DIAGRAM Figure 2. Block Diagram www.onsemi.com 3 ILIM 14 EN/ 22 UVLO Sleep Mode/ UVLO/POR Peak Current Limiting (PCL) SS 17 FB 15 VCC PVCC I SEN Pre−bias Startup Soft Start V REF PCL E/A PWM Operation SW and Frequency Sync Control 13 MODE SYNC 21 RT GND VCC HVBIAS 19 18 23 27 GND 25 PVCC 24 EXTBIAS 26 BOOT 29 VIN 1−3, 31−35 Ramp Generator VCC VIN Feed−forward LDO1 LDO2 UVLO High−side I SEN Ramp Comparator PWM Control Fault FB V REF Fault / Power Good Control 16 COMP 20 PGOOD Level Shift PCL Deadtime Control Over Temp Protection PCL Low−side PVCC I 12 LG 4−6 7−10 28 VINMON 30 PH SW PGND FAN65004B PIN CONFIGURATION HVBIAS VINMON BOOT PH VIN VIN VIN VIN VIN EXTBIAS GND PVCC VCC EN/UVLO SYNC PGOOD RT GND SS 27 28 26 25 29 30 31 32 33 34 35 1 VIN 2 VIN 24 3 VIN 23 22 4 PGND 21 20 5 PGND 19 12 18 6 PGND 17 16 15 14 13 11 10 9 8 7 COMP FB ILIM MODE LG NC SW SW SW SW Figure 3. Pin Assignment (Bottom View) Table 2..


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