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FAN65008B Datasheet

Voltage Mode Synchronous PWM Buck Regulator

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FAN65008B
High Performance 65 V, 10 A
Voltage Mode Synchronous
PWM Buck Regulator
Description
FAN65008B 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 10 A.
FAN65008B includes a 0.67% accurate reference voltage to achieve
tight regulation. The switching frequency can be programmed from
100 kHz to 1 MHz. To improve efficiency at light load condition, the
device can be set to discontinuous conduction mode with pulse
skipping operation.
FAN65008B 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−circuit protection.
FAN65008B uses ON Semiconductor’s high performance
PowerTrench® MOSFETs that reduces ringing in switching
applications. FAN65008B integrates the controller, driver, and power
MOSFETs into a thermally enhanced, compact 6 x 6 mm PQFN
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.
www.onsemi.com
PQFN35 6x6
CASE 483BE
MARKING DIAGRAM
1
ZXYYKK
FAN
65008B
Z = Assembly Location
X = Year / Lead Free
YY = Week
KK = Lot
FAN65008B = Specific Device Code
Features
Wide Input Voltage Range: 4.5 V to 65 V
ORDERING INFORMATION
See detailed ordering and shipping information on page 23 of
this data sheet.
Continuous Output Current: 10 A
Fixed Frequency Voltage Mode PWM Control with Input Voltage
Feed−forward
0.6 V Reference Voltage with 0.67% Accuracy
High Performance Low Profile 6 mm x 6 mm PQFN
Adjustable Switching Frequency: 100 kHz to 1 MHz
Dual LDOs for Single Supply Operation and to Reduce
Package
This Device is Pb−Free and RoHS Compliant
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)
Power Good Indicator
Applications
High Voltage POL Module
Telecommunications: Base Station Power Supplies
Networking: Computing, Battery Management
Systems, USB−PD
Industrial Equipment: Automation, Power Tools, Slot
Machines
Over Current Protection, Thermal Shutdown, Over
Voltage Protection, Under Voltage Protection and
Short−circuit Protection
© Semiconductor Components Industries, LLC, 2017
January, 2018 − Rev. 1
1
Publication Order Number:
FAN65008B/D


  ON Semiconductor Electronic Components Datasheet  

FAN65008B Datasheet

Voltage Mode Synchronous PWM Buck Regulator

No Preview Available !

FAN65008B
TYPICAL APPLICATION
R2 C2
R3
EN /
UVLO
C4
PVCC
R4
C5
VCC
MODE
C6
SS
RT
R6
R7
RBOOT C3
C1
VCC
SYNC
PGOOD
R5
EXTBIAS
SW
L
C7
COMP
R8
C8
FB
VIN
4.5 V~65 V
VO
R9
R10
C9
C10
R11
Figure 1. Typical Application
Table 1. APPLICATION DESIGN EXAMPLE
VIN (V) VO (V)
L to be
L (mH) used (mH)
CO from
VO_RIPPLE
(mF)
CO from CO from CO to be
VOS (mF) VUS (mF) used
R10 (W)
R11
(W)
R9 R8 C9 C7 C8
(W) (W) (F) (F) (F)
Phase
fCO margin
RT
(Hz) () (=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
NOTE: *Iout = 5 A, Fsw = 300 KHz
19.8
19.8
571.6
www.onsemi.com
2


Part Number FAN65008B
Description Voltage Mode Synchronous PWM Buck Regulator
Maker ON Semiconductor
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