FP6276BXR-G1 [FEELING]
500kHz 6A High Efficiency Synchronous PWM Boost Converter;
| 型号： | FP6276BXR-G1 |
| 厂家： | 
Feeling Technology |
| 描述： | 500kHz 6A High Efficiency Synchronous PWM Boost Converter |
| 文件： | 总12页 (文件大小：638K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
FP6276B
500kHz 6A High Efficiency Synchronous PWM Boost Converter
General Description
The FP6276B is a current mode boost DC-DC converter with PWM/PSM control. Its PWM
circuitry with built-in 40mΩ high side switch and 40mΩ low side switch make this regulator highly power
efficient. The internal compensation network also minimizes external component counts to only 6. An
internal 0.6V voltage is connected to error amplifier the non-inverting input as precision reference
voltage. Built-in soft-start function can reduce the inrush current.
Features
Current mode with PWM/PSM control
Input voltage range: 2.4V~4.5V
Adjustable Output up to 5.3V
Shutdown current: <1uA
Oscillator frequency: 500KHz
Reference voltage: 0.6V +/-2%
Disconnect load during shutdown
Cycle-by-cycle current limit
Low RDS(on): 40mΩ for both high and low side
Protection: OTP, OCP, SCP
Internal compensation
Internal soft-start: 7ms
Package: SOP-8L(EP)
Applications
Chargers
Handheld Devices
Portable Products
Power Bank
Typical Application Circuit
VIN
VOUT
1
2
8
7
VO
OC
LX
LX
FP6276B
6
5
3
4
FB
VIN
EN
ON/OFF
GND
SOP-8L(EP)
This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.
No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.
Website: http://www.feeling-tech.com.tw
Rev. 0.66
1/12
FP6276B
Function Block Diagram
GND
OC
VIN
Adjustable
UVLO
Current Limit
VO
VDD
MUX
VIN
OTP
OCP
VO
Error Amp.
VDD
FB
Bulk Well
Switch
0.6V
Control
and
PWM
LX
Comp.
Driver
Logic
VDD
Soft
Shutdown
EN
Start
Circuitry
Oscillator
500KHz
Slope
Compensation
PGND
Current Sense
Amp.
Pin Descriptions
SOP-8L (EP)
Top View
Name
LX
No. I / O
Description
1
2
3
4
8
7
6
5
LX
LX
VO
1
2
3
4
I
I
Power Switch Output
Power Switch Output
IC Power Supply
OC
FB
LX
VIN
EN
P
I
VIN
EN
Enable Control (Active High)
IC Ground
GND
GND
5
P
FB
OC
6
7
I
I
Error Amplifier Inverting Input
Bottom View
Adjustable Current Limit (Floating Available)
Output Voltage Pin
VO
8
O
P
PGND
EP
IC Power Ground(Must connect to GND)
EP
(PGND)
This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.
No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.
Website: http://www.feeling-tech.com.tw
Rev. 0.66
2/12
FP6276B
Marking Information
SOP-8L(EP)
FP6276B
XXx-XXL
Halogen Free
Lot Number
Internal ID
Per- Half Month
Year
Halogen Free: Halogen free product indicator
Lot Number: Wafer lot number’s last two digits
For Example
Lot : 123456
XXx-56L
Internal ID: Internal Identification Code
Per-Half Month: Production period indicator in half month time unit
For Example : A → First Half Month of January
B → Second Half Month of January
C → First Half Month of February
D → Second Half Month of February
Year: Production year’s last digit
This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.
No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.
Website: http://www.feeling-tech.com.tw
Rev. 0.66
3/12
FP6276B
Ordering Information
Part Number
Operating Temperature
Package
MOQ
Description
FP6276BXR-G1
SOP-8L(EP)
2500EA
Tape & Reel
-40°C ~ 85°C
Absolute Maximum Ratings
Min.
Typ.
Max.
6
Parameter
Symbol
Conditions
Unit
V
Supply Voltage
VIN
0
0
0
LX Voltage
VLX
6
V
EN,FB,OC,VO Voltage
Thermal Resistance (Note1)
Junction Temperature
Operating Temperature
Storage Temperature
Lead Temperature
6
V
θJA
TJ
SOP-8L(EP)
+60
+150
+85
+150
+260
°C / W
°C
TOP
TST
-40
-65
°C
°C
(soldering, 10 sec)
°C
Note1:
θJA is measured in the natural convection at TA=25°C on a low effective thermal conductivity test
board of JEDEC 51-3 thermal measurement standard.
IR Re-flow Soldering Curve
This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.
No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.
Website: http://www.feeling-tech.com.tw
Rev. 0.66
4/12
FP6276B
Recommended Operating Conditions
Min.
2.4
Typ.
Max.
Parameter
Supply Voltage
Operating Temperature Range
Symbol
Conditions
Unit
V
VIN
4.5
TA
Ambient Temperature
-40
+85
°C
DC Electrical Characteristics (VIN=3.3V, TA=25°C, unless otherwise specified)
Min.
Typ.
Max.
Parameter
Symbol
Conditions
Unit
V
Input Voltage
VIN
2.4
4.5
Under Voltage Lockout
UVLO Hysteresis
VUVLO
2.1
0.1
280
3.6
0.1
V
V
Quiescent Current
ICC
ICC
ICC
VFB =0.65V, No switching
VFB=0.55V, Switching
VEN=GND
µA
mA
µA
A
Average Supply Current
Shutdown Current
Linear Charge Current
Operation Frequency
Maximum Duty Ratio
Feedback Voltage
ICHARGE VOUT<VIN
3
fOSC
%
VFB=0.55V
500
90
kHZ
%
VREF
VEN
VIN=4.5V
0.588
0.96
0.6
0.612
0.6
V
Enable Voltage
V
Shutdown Voltage
VEN
V
Soft-Start Time
tSS
VIN=4.5V
7
40
40
6
ms
mΩ
mΩ
A
High Side Switch RDS(ON)
Low Side Switch RDS(ON)
Internal Switch Current Limit
Thermal Shutdown Threshold
Thermal Shutdown Hysteresis
RON-PMOS
RON-NMOS
IOCP
TOTP
150
30
℃
℃
This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.
No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.
Website: http://www.feeling-tech.com.tw
Rev. 0.66
5/12
FP6276B
Typical Operating Characteristics
(VCC=3V,Vout=5V ,Iout=2.1A,TA=25℃, unless otherwise specified)
Output Voltage VS Output Current
Output Voltage VS Input Voltage
5.05
5.03
5.01
4.99
4.97
4.95
5
4.98
4.96
4.94
4.92
4.9
0
0.5
1
1.5
2
2.5
2.5
3
3.5
4
4.5
Output Current(A)
InputVoltage(V)
Efficiency VS Output Current
Temperature VS Output Current
100
98
96
94
92
90
88
86
84
82
80
70
60
50
40
30
20
Vin=4.2V
Vin=3.7V
Vin=3.3V
Vin=3V
Vin=4.2V
Vin=3.7V
Vin=3.3V
Vin=3V
0
0.5
1
1.5
2
2.5
0
0.5
1
1.5
2
2.5
OutputCurrent(A)
OutputCurrent(A)
Ocset Resistance VS Current Limit
Frequency VS Input Voltage
5
4
3
2
1
0
550
530
510
490
470
450
2.5
3
3.5
4
4.5
0
50
100
150
200
250
300
350
InputVoltage(V)
Ocset Resistor(kΩ)
This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.
No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.
Website: http://www.feeling-tech.com.tw
Rev. 0.66
6/12
FP6276B
Output Ripple
Transient Response
(VIN=3.3V，VOUT=5V，
(VIN=3.3V，VOUT=5V，IOUT=0.5~2.1A)
EN ON Test
(VIN=3.3V，VOUT=5V，IOUT=2.1A)
EN OFF Test
(VIN=3.3V，VOUT=5V，
Power ON Test
Short Test
(VIN=3.3V，VOUT=5V，IOUT=2.1A)
(VIN=3.3V， IOUT=2.1A)
This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.
No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.
Website: http://www.feeling-tech.com.tw
Rev. 0.66
7/12
FP6276B
Function Description
Operation
The FP6276B is a current mode synchronous boost converter. The constant switching frequency
is 500 kHz and operates with pulse width modulation (PWM). Build-in 40mΩ high side switch and
40mΩ low side switch provides a high efficient conversion.
Soft Start Function
Soft start circuitry is integrated into FP6276B to avoid inrush current during power on. After the IC
is enabled, the output of error amplifier is clamped by the internal soft-start function, which causes
PWM pulse width increasing slowly and thus reducing input surge current.
Current Limit Program (OCP)
A resistor between OC and GND pin programs peak switch current. The resistor value should be
between 37.5k and 300k. The current limit can be set from 5 A to 0.8A. Keep traces at this pin as short
as possible. Do not put capacitance at this pin. Set the over current trip point according to the following
equation:
180000
IOCP
0.2
R3
Over Temperature Protection (OTP)
FP6276B will turn off the power MOSFET automatically when the internal junction temperature is
higher than 150°C. The power MOSFET wake up when the junction temperature drops 30°C under the
OTP threshold temperature.
This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.
No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.
Website: http://www.feeling-tech.com.tw
Rev. 0.66
8/12
FP6276B
Application Information
Inductor Selection
Inductance value is decided based on different condition. 1.5uH to 4.7µH inductor value is
recommended for general application circuit. There are three important inductor specifications, DC
resistance, saturation current and core loss. Low DC resistance has better power efficiency. Also,
avoid inductor saturation which will cause circuit system unstable and lower core loss at 500KHz.
Capacitor Selection
The output capacitor is required to maintain the VO DC voltage. Low ESR capacitors are
preferred to reduce the output voltage ripple. Ceramic capacitor of X5R and X7R are recommended,
which have low equivalent series resistance (ESR) and wider operation temperature range.
Output Voltage Programming
The output voltage is set by a resistive voltage divider from the output voltage to FB. The output
voltage is:
R1
R2
VOUT 0.6V 1
Layout Considerations
1. The power traces, consisting of the GND trace, the LX trace and the VIN trace should be kept
short, direct and wide.
2. Layout LX switching node wide and short trace to reduce EMI.
3. Place C1 near VIN pin as closely as possible to maintain input voltage steady and filter out
the pulsing input current.
4. The resistive divider R1 and R2 must be connected to FB pin directly and as closely as
possible.
5. FB is a sensitive node. Please keep it away from switching node LX.
6. The GND of the IC, C1, C3 and C4 should be connected close together directly to a power
ground plane.
This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.
No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.
Website: http://www.feeling-tech.com.tw
Rev. 0.66
9/12
FP6276B
L1
1
2
8
7
Vin
VIA to GND
R9
FP6276B
R1
3
4
6
5
R3
R2
C1
Vout
C8
C3
GND
C4
Suggested Layout
This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.
No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.
Website: http://www.feeling-tech.com.tw
Rev. 0.66
10/12
FP6276B
Typical Application
Optional
C5
R4
Close to PGND
L1 3.3µH
VIN
VOUT
1
8
7
VO
OC
LX
R9
43k
2
R1
73k
LX
FP6276B
C1
22µF
6
5
3
4
VIN
FB
C4
100µF
C3
22µF
R3
10k
GND
ON/OFF
EN
R2
10k
C8
1nF
SOP-8L(EP)
Close to PGND
Note:
1.
2.
3.
Use ceramic capacitor of X5R or X7R for C1 and C2.
R4 and C5 are added for reducing EMI (Electromagnetic Interference).
EN voltage must be less than or equal to VIN voltage.
This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.
No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.
Website: http://www.feeling-tech.com.tw
Rev. 0.66
11/12
FP6276B
Package Outline
SOP-8L (EP)
Unit: mm
Symbols
Min. (mm)
1.346
Max. (mm)
1.752
0.152
1.498
4.978
3.987
6.197
1.270
8°
A
A1
A2
D
0.050
4.800
3.810
5.791
0.406
0°
E
H
L
θ°
Exposed PAD Dimensions:
Symbols
Min. (mm)
Max. (mm)
D1
E1
3.302 REF
2.413 REF
Note:
1. Package dimensions are in compliance with JEDEC outline: MS-012 AA.
2. Dimension ”D” does not include molding flash, protrusions or gate burrs.
3. Dimension “E” does not include inter-lead flash or protrusions.
This datasheet contains new product information. Feeling Technology reserves the rights to modify the product specification without notice.
No liability is assumed as a result of the use of this product. No rights under any patent accompany the sales of the product.
Website: http://www.feeling-tech.com.tw
Rev. 0.66
12/12
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