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參數資料
| 型號： | TPS61093DSK |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 穩壓器 |
| 英文描述： | 1.5 A SWITCHING REGULATOR, 1400 kHz SWITCHING FREQ-MAX, PDSO10 |
| 封裝： | 2.50 X 2.50 MM, 0.80 MM HEIGHT, PLASTIC, SON-10 |
| 文件頁數： | 5/23頁 |
| 文件大小： | 760K |
| 代理商： | TPS61093DSK |
80
60
40
20
0
-20
-40
180
135
90
45
0
-45
-90
-135
-180
10
100
1k
10k
100k
1M
f-Frequency-Hz
Gain-dB
Phase-deg
Gain
Phase
V
FB
EA
fzea
fp-ea
P
o
O
1
=
(a)
× R
× C
p
p-f
ff
1
=
(b)
2
R2
C
p
z-f
ff
1
=
(c)
2
R1
C
p
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SLVS992A – SEPTEMBER 2009 – REVISED NOVEMBER 2009
SMALL SIGNAL STABILITY
The TPS61093 integrates slope compensation and the RC compensation network for the internal error amplifier.
Most applications will be control loop stable if the recommended inductor and input/output capacitors are used.
For those few applications that require components outside the recommended values, the internal error
amplifier’s gain and phase are presented in Figure 14.
Figure 14. Bode Plot of Error Amplifier Gain and Phase
The RC compensation network generates a pole fp-ea of 57-kHz and a zero fz-ea of 1.9-kHz, shown in Figure 14.
Use Equation 7 to calculate the output pole, fP, of the boost converter. If fP << fz-ea. due to a large capacitor
beyond 10
μF, for example, a feed forward capacitor on the resistor divider, as shown in Figure 14, is necessary
to generate an additional zero fz-f. to improve the loop phase margin and improve the load transient response.
The low frequency pole fp-f and zero fz-f generated by the feed forward capacitor are given by Equation 8 and
(7)
(8)
(9)
Where Cff = the feed-forward capacitor.
For example, in the typical application circuitry (see Figure 1), the output pole fP is approximately 1-kHz. When
the output capacitor is increased to 100-
μF, then the fP is reduced to 10-Hz. Therefore, a feed-forward capacitor
of 10-nF compensates for the low frequency pole.
A feed forward capacitor that sets fz-f near 10-kHz improves the load transient response in most applications, as
shown in Figure 8.
Copyright 2009, Texas Instruments Incorporated
13
Product Folder Link(s): TPS61093
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相關代理商/技術參數 |
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| TPS61093DSKR | 功能描述:直流/直流開關調節器 Low In 20V/1.1A Step Up DC/DC Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| TPS61093DSKT | 功能描述:直流/直流開關調節器 Low In 20V/1.1A Step Up DC/DC Converter RoHS:否 制造商:International Rectifier 最大輸入電壓:21 V 開關頻率:1.5 MHz 輸出電壓:0.5 V to 0.86 V 輸出電流:4 A 輸出端數量: 最大工作溫度: 安裝風格:SMD/SMT 封裝 / 箱體:PQFN 4 x 5 |
| TPS61093DSKT | 制造商:Texas Instruments 功能描述:Switching Regulator IC 制造商:Texas Instruments 功能描述:IC, STEP-UP DC/DC CONVERTER, SON-10 |
| TPS61093EVM-519 | 功能描述:電源管理IC開發工具 TPS61093EVM-519 Eval RoHS:否 制造商:Maxim Integrated 產品:Evaluation Kits 類型:Battery Management 工具用于評估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
| TPS61093QDSKRQ1 | 功能描述:Boost Switching Regulator IC Positive Adjustable 1.6V 1 Output 900mA (Switch) 10-WFDFN Exposed Pad 制造商:texas instruments 系列:汽車級，AEC-Q100 包裝:剪切帶（CT） 零件狀態:有效 功能:升壓 輸出配置:正 拓撲:升壓 輸出類型:可調式 輸出數:1 電壓 - 輸入（最小值）:1.6V 電壓 - 輸入（最大值）:6V 電壓 - 輸出（最小值/固定）:1.6V 電壓 - 輸出（最大值）:17V 電流 - 輸出:900mA（開關） 頻率 - 開關:1.2MHz 同步整流器:無 工作溫度:-40°C ~ 125°C（TA） 安裝類型:表面貼裝 封裝/外殼:10-WFDFN 裸露焊盤 供應商器件封裝:10-SON（2.5x2.5） 標準包裝:1 |
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