Datasheet

t -Time-1 s/Divm
V =100mV/div(ACCoupled)
IN
V =10V/div
(PH)
ACCoupled
20MHzBWL
t -Time-1 s/Divm
V =20mV/div(ACCoupled)
IN
V =10V/div
(PH)
ACCoupled
20MHzBWL
t -Time-200 s/Divm
I =500mA/div
O
V =100mV/div
O
ACCoupled
20MHzBWL
0.60
-0.03
-0.02
0.01
0.02
0.03
0
0.2 0.4 10.8 1.2
I -OutputCurrent- A
O
OutputVoltageRegulation-%
-0.01
V =14.5V
I
V =20V
I
V =30V
I
V =25V
I
V =36V
I
75
80
85
90
95
100
I -OutputCurrent- A
O
Efficiency-%
0.60 0.2 0.4 10.8 1.2 1.4
V =30V
I
V =35V
I
V =20V
I
V =14.5V
I
V =25V
I
2616
-0.03
-0.02
0.01
0.02
0.03
0
20 24 3428 36
V -InputVoltage-V
I
OutputVoltageRegulation-%
-0.01
3214 18 22 30
I =0.5 A
O
I =0 A
O
I =1 A
O
TPS5410
www.ti.com SLVS675C –AUGUST 2006–REVISED SEPTEMBER 2013
Thermal Calculations
The following formulas show how to estimate the device power dissipation under continuous conduction mode
operations. They should not be used if the device is working at light loads in the discontinuous conduction mode.
Conduction Loss: Pcon = I
OUT
2
x Rds(on) x V
OUT
/ V
IN
Switching Loss: Psw = V
IN
x I
OUT
x 0.01
Quiescent Current Loss: Pq = V
IN
x 0.01
Total Loss: Ptot = Pcon + Psw + Pq
Given T
A
=> Estimated Junction Temperature: T
J
= T
A
+ Rth x Ptot
Given T
JMAX
= 125°C => Estimated Maximum Ambient Temperature: T
AMAX
= T
JMAX
– Rth x Ptot
PERFORMANCE GRAPHS
The performance graphs in Figure 13 - Figure 20 are applicable to the circuit in Figure 11. T
A
= 25 °C. unless
otherwise specified.
Figure 13. Efficiency vs. Output Figure 14. Output Voltage Figure 15. Output Voltage
Current Regulation % vs. Output Current Regulation % vs. Input Voltage
Figure 16. Input Voltage Ripple Figure 17. Output Voltage Ripple Figure 18. Transient Response, I
O
and PH Node, I
O
= 1 A and PH Node, I
O
= 1 A Step 0.25 to 0.75 A
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