60

(

)

(

)

CF

S

MHz k

R

k

f MHz

× W

W =

(2)

Space

For compensation (comp) setting 3:

Space

180

(

)

(

)

CF

S

MHz k

R

k

f MHz

× W

W =

(3)

Table 9-1. Switching Frequency and Compensation for TPS62810-Q1 (4 A) and TPS62813-Q1 (3 A)

COMPENSATION

RCF

SWITCHING FREQUENCY

MINIMUM OUTPUT

CAPACITANCE

FOR VOUT < 1 V

MINIMUM OUTPUT

CAPACITANCE

FOR 1 V ≤ VOUT < 3.3 V

MINIMUM OUTPUT

CAPACITANCE

FOR VOUT ≥ 3.3 V

for smallest output

capacitance

(comp setting 1)

10 kΩ ... 4.5 kΩ

1.8 MHz (10 kΩ) ... 4 MHz (4.5 kΩ)

according to Equation 1

53 µF

32 µF

27 µF

for medium output

capacitance

(comp setting 2)

33 kΩ ... 15 kΩ

1.8 MHz (33 kΩ) ... 4 MHz (15 kΩ)

according to Equation 2

100 µF

60 µF

50 µF

for large output

capacitance

(comp setting 3)

100 kΩ ... 45 kΩ

1.8 MHz (100 kΩ) ... 4 MHz (45 kΩ)

according to Equation 3

200 µF

120 µF

100 µF

for smallest output

capacitance

(comp setting 1)

tied to GND

internally fixed 2.25 MHz

53 µF

32 µF

27 µF

for large output

capacitance

(comp setting 3)

tied to VIN

internally fixed 2.25 MHz

200 µF

120 µF

100 µF

Table 9-2. Switching Frequency and Compensation for TPS62812-Q1 (2 A) and TPS62811-Q1 (1 A)

COMPENSATION

RCF

SWITCHING FREQUENCY

MINIMUM OUTPUT

CAPACITANCE

FOR VOUT < 1 V

MINIMUM OUTPUT

CAPACITANCE

FOR 1 V ≤ VOUT < 3.3 V

MINIMUM OUTPUT

CAPACITANCE

FOR VOUT ≥ 3.3 V

for smallest output

capacitance

(comp setting 1)

10 kΩ ... 4.5 kΩ

1.8 MHz (10 kΩ) ... 4 MHz (4.5 kΩ)

according to Equation 1

30 µF

18 µF

15 µF

for medium output

capacitance

(comp setting 2)

33 kΩ ... 15 kΩ

1.8 MHz (33 kΩ) ... 4 MHz (15 kΩ)

according to Equation 2

60 µF

36 µF

30 µF

for large output

capacitance

(comp setting 3)

100 kΩ ... 45 kΩ

1.8MHz (100 kΩ) ...4 MHz (45 kΩ)

according to Equation 3

130 µF

80 µF

68 µF

for smallest output

capacitance

(comp setting 1)

tied to GND

internally fixed 2.25 MHz

30 µF

18 µF

15 µF

for large output

capacitance

(comp setting 3)

tied to VIN

internally fixed 2.25 MHz

130 µF

80 µF

68 µF

Refer to Section 10.1.3.2 for further details on the output capacitance required depending on the output voltage.

A too high resistor value for RCF is decoded as "tied to VIN", a value below the lowest range is decoded as "tied

to GND". The minimum output capacitance in Table 9-1 and Table 9-2 is for capacitors close to the output of the

device. If the capacitance is distributed, a lower compensation setting can be required. All values are effective

capacitance, including all tolerances, aging, dc bias effect, and so forth.

9.3.3 MODE / SYNC

When MODE/SYNC is set low, the device operates in PWM or PFM mode, depending on the output current.

The MODE/SYNC pin allows to force PWM mode when set high. The pin also allows you to apply an external

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TPS62810-Q1, TPS62811-Q1, TPS62812-Q1, TPS62813-Q1

SLVSDU1J – AUGUST 2018 – REVISED MARCH 2023

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