VIN

GND

EN

FB

SW

TPS62590DRV

L

V

MODE

2.2 H

m

C

OUT

10mF

C1

22pF

R1

R2

C

IN

10mF

PwrPAD

I

V

3.3 V to 5.5 V

IN

OUT

5

4

2

1

3

6

820k

182k

=3.3V

TimeBase-10 s/Div

m

V

20mV/Div

OUT

V

3.6V,

V

1.8V,I

10mA,

L 2.2 H,C

10 F0603

IN

OUT

OUT

OUT

m

m

SW2V/Div

I

200mA/Div

coil

TimeBase-10 s/Div

m

V

3.6V,

V

1.8V,I

150mA,

L 2.2 H,C

10 F0603

IN

OUT

OUT

OUT

m

m

V

10mV/Div

OUT

SW2V/Div

I

200mA/Div

coil

TPS62590

SLVS897C – JANUARY 2009 – REVISED DECEMBER 2015

www.ti.com

Figure 20. Typical Operation – PWM Mode

Figure 19. Typical Operation – PFM Mode

8.3 System Example

Figure 21. TPS62590DRV Adjustable 3.3 V

9 Power Supply Recommendations

The TPS62590 device has no special requirements for its input power supply. The output current of the input

power supply needs to be rated according to the supply voltage, output voltage and output current of the

TPS62590.

16

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