Texas Instruments TPS54673EVM-225, Руководство пользователя, Страница: 13 / 42

Performance Specification Summary
1-3 Introduction
Table 1–2. TPS54673EVM-225 Performance Specification Summary
Specification Test Conditions Min Typ Max Units
Input voltage range 3.0
3.3 or
5.0
6.0 V
Output voltage set point 0.9 2.5 3.3 V
Output current range V
I
= 3 V to 6 V 6 A
Line regulation (see Note 1) I
O
= 3 A, V
I
= 3.02 V to 6 V
±
4 mV
Load regulation V
I
= 3.3 V, I
O
= 0 A to 6 A
±
4 mV
I 1 5 A to 4 5 A t 40
µ
s
–20 mV
PK
Load transient response
I
O
= 1.5 A to 4.5 A, t
r
= 40
µ
s
120
µ
s
Load transient response
I 4 5 A to 1 5 A t 40
µ
s
20 mV
PK
I
O
= 4.5 A to 1.5 A, t
f
= 40
µ
s
100
µ
s
Loop bandwidth V
I
= 3 V 80 kHz
Phase margin V
I
= 3 V 48
°
Loop bandwidth V
I
= 6 V 125 kHz
Phase margin V
I
= 6 V 49
°
Input ripple voltage 245 275 mV
PP
Output ripple voltage 7 10 mV
PP
Output rise time 4.7 8.4 15 ms
Operating frequency 700 kHz
Maximum efficiency V
I
= 3.3 V, Vo = 2.5 V, I
O
= 1.0 A 93%
Note: Maximum duty cycle is approached as VI approaches 3 V, limiting input voltage range for VO = 2.5 V.
Table 1–3. TPS54873EVM-225 Performance Specification Summary
Specification Test Conditions Min Typ Max Units
Input voltage range 4.0 5.0 6.0 V
Output voltage set point 0.9 3.3 3.3 V
Output current range V
I
= 4 V to 6 V 8 A
Line regulation I
O
= 4 A
±
4 mV
Load regulation V
I
= 5 V, I
O
= 0 A to 8 A
±
5 mV
I 2 A to 6 A t 40
µ
s
–18 mV
PK
Load transient response
I
O
= 2 A to 6 A, t
r
= 40
µ
s
100
µ
s
Load transient response
I 6 A to 2 A t 40
µ
s
18 mV
PK
I
O
= 6 A to 2 A, t
f
= 40
µ
s
80
µ
s
Loop bandwidth V
I
= 4 V 100 kHz
Phase margin V
I
= 4 V 45
°
Loop bandwidth V
I
= 6 V 125 kHz
Phase margin V
I
= 6 V 45
°
Input ripple voltage 360 400 mV
PP
Output ripple voltage 7 10 mV
PP
Output rise time 4.7 8.4 15 ms
Operating frequency 700 kHz
Maximum efficiency V
I
= 5 V, Vo = 3.3 V, I
O
= 2.0 A 93.5%