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TPSM63610
SLVSGU1 – NOVEMBER 2022
V
= 3V to 36 V
IN
Precision enable
for V
UVLO
IN
Optional
Synchronization
(200kHz-2.2MHz)
Figure 8-1. TPSM63610 Schematic Diagram with Input Voltage Operating Range of 3 V to 36 V
The minimum input voltage required for start-up is 3.7 V. Take extra care to make sure that the voltage at the
VIN pins of the module (VIN1 and VIN2) does not exceed the absolute maximum voltage rating of 42 V during
line or load transient events. Voltage ringing at the VIN pins that exceeds the
damage the IC.
8.3.2 Adjustable Output Voltage (FB)
The TPSM63610 has an adjustable output voltage range from 1 V up to a maximum of 20 V or slightly less than
V
, whichever is lower. Setting the output voltage requires two feedback resistors, designated as R
IN
in
Figure
8-1. The reference voltage at the FB pin is set at 1 V with a feedback system accuracy over the full
junction temperature range of ±1%. The junction temperature range for the device is –40°C to 125°C.
Calculate the value for R
R FBT kΩ
R
kΩ =
FBB
V OUT
1
Table 8-1
lists the standard resistor values for several output voltages and the recommended switching
frequency range to maintain reasonable peak-to-peak inductor ripple current. This table also includes the
minimum required output capacitance for each output voltage setting to maintain stability. The capacitances
as listed represent effective values for ceramic capacitors derated for DC bias voltage and temperature.
Furthermore, place a feedforward capacitor, C
output capacitance is close to the minimum recommended value.
14
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C
IN1
10 F
R
ENT
PGOOD
indicator
R
ENB
R
PG
100 k
¢
R
MODE
R
R
SS
RT
Adjustable
Switching
Frequency
using
Equation 1
below based on a recommended value for R
FBB
− 1
FF
Product Folder Links:
VIN1
VIN2
PGND
PGND
EN
TPSM63610
PG
VLDOIN
external bias
VOUT1
VCC
VOUT2
SYNC/
CBOOT
MODE
SPSP
RBOOT
RT
FB
AGND
, in parallel with R
to increase the phase margin when the
FBT
TPSM63610
C
IN2
10
F
¡
Optional
V
= 1-20 V
OUT
C
C
OUT
R
FF
FBT
R
FBB
Absolute Maximum Ratings
of 100 kΩ.
FBT
Copyright © 2022 Texas Instruments Incorporated
www.ti.com
can
and R
FBT
FBB
(1)
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