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TPS61175PWPR Datasheet(PDF) 5 Page - Texas Instruments

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Part # TPS61175PWPR
Description  3-A High Voltage Boost Converter with Soft-start and Programmable Switching Frequency
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Manufacturer  TI [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI - Texas Instruments

TPS61175PWPR Datasheet(HTML) 5 Page - Texas Instruments

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FUNCTIONAL BLOCK DIAGRAM
SW
Ramp
Generator
Oscillator
Current
Sensor
EN
PGND
C4
L1
+
EA
R2
C2
VIN
PWMControl
COMP
R1
R3
R4
C3
SS
FREQ
SYNC
FB
FB
Gate
Dirver
C1
AGND
D1
1.229V
Reference
TYPICAL CHARACTERISTICS
TABLE OF GRAPHS
TPS61175
www.ti.com ........................................................................................................................................................................................... SLVS892 – DECEMBER 2008
Circuit of Figure 1; L1 = D104C2-10
µH; D1 = SS3P6L-E3/86A, R4 = 80kΩ, R3 = 10kΩ, C4 = 22nF,
FIGURE
C2 = 10
µF;Vin = 5V, Vout = 24V, Iout = 200mA; unless otherwise noted
Efficiency
VIN = 5V, Vout = 12V, 24V, 35V
2
Efficiency
VIN = 5V, 12V; Vout = 24V
3
Error amplifier transconductance
vs Temperature
4
Switch current limit
vs Temperature
5
Switch current limit
vs Duty cycle
6
FB accuracy
vs Temperature
7
Line transient response
Vin = 4.5 V to 5 V
8
Load transient response
Iout = 100 mA to 300 mA; refer to 'compensating the control loop' for
9
optimization
PWM Operation
10
Pulse skipping
No load
11
Start-up
C3 = 47 nF
12
Copyright © 2008, Texas Instruments Incorporated
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Product Folder Link(s): TPS61175


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