TPS61170DRV datasheet(5/22 Pages) TI

Part #	TPS61170DRV

Description	1.2A High Voltage Boost Converter in 2x2mm2 QFN Package

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Manufacturer	TI [Texas Instruments]

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FUNCTIONAL BLOCK DIAGRAM

SW

Ramp

Generator

Oscillator

Current

Sensor

CTRL

GND

C3

L1

+

FB

BandGap

D1

Error

Amplifer

2

1

R2

C2

Vin

C1

PWMControl

4

6

Soft

Start-up

5

3

COMP

R1

R3

TYPICAL CHARACTERISTICS

TABLE OF GRAPHS

TPS61170

SLVS789 – NOVEMBER 2007

Circuit of Figure 1, L = TOKO A915_Y-100M, D1 = ONsemi MBR0540T1, unless otherwise noted.

FIGURE

Efficiency

VIN = 5V; VOUT = 12V,18V,24V,30V;

Figure 2

Efficiency

VIN = 5V, 8.5V, 12V; VOUT = 24V;

Figure 3

Output voltage accuracy

ILOAD= 100 mA

Figure 4

Switch current limit

TA = 25°C

Figure 5

Switch current limit

Figure 6

Error amplifier transconductance

Figure 7

Easyscale step

Figure 8

PWM switching operation

VIN = 5V; VOUT = 12V; ILOAD= 250mA;

Figure 9

Load transient response

VIN = 5V; VOUT = 12V; ILOAD= 50mA to 150mA;

Figure 10

Start-up

VIN = 5V; VOUT = 12V; ILOAD= 250mA;

Figure 11

Skip-cycle switching

VIN = 9V ; VOUT = 12V, ILOAD= 100µA ;

Figure 12

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