參數(shù)資料
型號(hào)： TPS54972EVM-222
廠商： Texas Instruments, Inc.
英文描述： 9-Amp SWIFT Regulator Evaulation Module(9A SWIFT穩(wěn)壓器TPS54972的評(píng)估模塊)
中文描述： 9放大器模塊的SWIFT穩(wěn)壓Evaulation（第9A SWIFT的穩(wěn)壓器TPS54972的評(píng)估模塊）
文件頁(yè)數(shù)： 13/43頁(yè)
文件大小： 785K
代理商： TPS54972EVM-222
Modifications
1-4
Table 1–4.TPS54972EVM-222 Performance Specification Summary
Specification
Input voltage range
Output voltage set point
Output current range
Line regulation
Load regulation
Test Conditions
Min
3.0
0.42
–9
Typ
3.3
1.25
Max
4.0
1.75
Units
V
V
A
mV
mV
mV
PK
μ
s
mV
PK
μ
s
kHz
°
kHz
°
mV
PP
mV
PP
ms
kHz
V
I
= 3 V to 4 V
I
O
= 4.5 A
V
I
= 5 V, I
O
= 0 A to 9 A
9
0.4
8.0
–35
75
40
75
71
41
80
42
340
I
O
= 2.25 A to 6.75 A, t
r
= 40
μ
s
Load transient response
μ
I
O
= 6.75 A to 2.25 A,
t
f
= 40
s
Loop bandwidth
Phase margin
Loop bandwidth
Phase margin
Input ripple voltage
Output ripple voltage
Output rise time
Operating frequency
Maximum efficiency
V
I
= 3 V
V
I
= 3 V
V
I
= 3.6 V
V
I
= 3.6 V
400
10
15
7
4.7
8.4
700
V
I
= 3.3 V, Vo = 1.25 V, I
O
= 2.5 A
89.7%
1.3
Modifications
The TPS54x72EVM–222 is designed to demonstrate the small size that can
be attained when designing with the TPS54x72, so many of the features which
allow for extensive modifications have been ommited from this EVM.
Changing the V
(DDQ)
voltage from 0.92 V to 3.5 V can change the output
voltage in the range of 0.46 V to 1.75 V. Output voltages above 1.75 V can be
obtained by modifying the REFIN voltage divider of R6 and R7, and scaling the
output feedback voltage into the VSENSE pin using the voltage divider of R1
and R9 (normally not used). To maintain the output-tracking rate of one half
the V
(DDQ)
input, the R6/R7 divider should scale V
(DDQ)
by a factor of four and
R1/R9 divder should scale V
(TTQ)
by a factor of two. To accomplish this,
replace R6 with a 30.1 k
resistor and add R9 as a 10 k
resistor. The
minimum output voltage is limited by the minimum controllable ontime of the
device, 200 ns, and is dependent upon the duty cycle and operating frequency.
The approximat minimum output voltage can be calculated using :
V
OUTMIN
200 ns
f
s
V
INMIN
The switching frequency may be trimmed to any value between 280 kHz and
700 kHz by changing the value of R5. Decreasing the switching frequency
results in increased output ripple unless the value of L1 is increased. A plot of
the value of RT versus the switching frequency is given in Figure 1–1.
(1)
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TPS54972PWP 功能描述:直流/直流開(kāi)關(guān)調(diào)節(jié)器 9-A Act Bus Term/DDR DC/DC Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
TPS54972PWPG4 功能描述:直流/直流開(kāi)關(guān)調(diào)節(jié)器 9-A Act Bus Term/DDR DC/DC Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
TPS54972PWPR 功能描述:直流/直流開(kāi)關(guān)調(diào)節(jié)器 9-A Act Bus Term/DDR DC/DC Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
TPS54972PWPRG4 功能描述:直流/直流開(kāi)關(guān)調(diào)節(jié)器 9-A Act Bus Term/DDR DC/DC Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開(kāi)關(guān)頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數(shù)量: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5
TPS54973 制造商:TI 制造商全稱:Texas Instruments 功能描述:3-V TO 4-V INPUT, 9-A OUTPUT SYNCHRONOUS BUCK SWITCHER WITH DISABLED SINKING DURING START-UP
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