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参数资料
| 型号： | TPS60503DGSG4 |
| 厂商： | TEXAS INSTRUMENTS INC |
| 元件分类： | 稳压器 |
| 英文描述： | SWITCHED CAPACITOR REGULATOR, 1200 kHz SWITCHING FREQ-MAX, PDSO10 |
| 封装： | 3.05 X 4.98 MM, GREEN, PLASTIC, MSOP-10 |
| 文件页数： | 7/24页 |
| 文件大小： | 743K |
| 代理商： | TPS60503DGSG4 |
TPS60500, TPS60501
TPS60502, TPS60503
SLVS391B OCTOBER 2001 REVISED FEBRUARY 2002
15
www.ti.com
APPLICATION INFORMATION
LC-post filter
If the output voltage ripple of the stepdown charge pump is to high, an LC post filter can be used.
C1F
1
F
86
C1F C1F+
C2F
1
F
34
C2F C2F+
7
OUT
10
FB
+ Co
10
F
C(P)
max 150 mA
2
PG
R
5
VIN
1
EN
GND
9
OFF/ON
Ci
2.2
F
2.5 V to 6.5 V
INPUT
TPS60503
L(P)
VP(out)
Figure 28. LC-Post Filter
Table 3. Measurement Results on Different C(fly), C(P), L(P) Combinations; BW = 500 MHz
VI
[V]
IO
[mA]
CI
[
F]
C(XF)
[
F]
CO
[
F]
L(P)
[
H]
C(P)
[
F]
VO
[V]
TYPICAL
VP(Out)
TYPICAL
VO(RMS)
I
[V]
O
[mA]
CERAMIC
(P)
[
H]
CERAMIC
O
[V]
VP(Out)
VPP[mV]
VO(RMS)
[mV]
5
50
2.2
0.22
4.7
—
0.1 (X7R)
3.3
50
8
5
50
2.2
0.22
4.7
—
0.1 (X7R)
1.5
30
9
5
150
4.7
1
10
—
0.1 (X7R)
1.5
50
6
5
250
4.7
1
2 x 10
—
0.1 (X7R)
1.5
45
8
5
100
4.7
1
10
0.1
0.1 (X7R)
1.5
20
4
power supply with dynamic voltage scaling
Dynamic voltage scaling of the core can be used to reduce power consumption of a digital signal processor
(DSP). During the periods, in which the maximum DSP performance is not required, the core voltage can be
reduced when the DSP operates at a lower clock-rate. This idea is called runtime power control (RPC) and is
supported by modern DSPs. RPC extends battery-life time in handheld applications, like MP3 players, digital
cameras, PDA.
The supply of DSPs is separated into I/O interface and core supply. Interface is mostly powered by a 3.3-V
system supply, whereas core supply achieves voltages far below 1.5 V. The TPS60500 is powered by the 3.3-V
system supply. The DSP itself selects the applied core voltage.
The core voltage is switched between 1.5 V and 1.1 V by changing the feedback resistor network. A MOSFET
modifies the voltage divider at the feedback (FB) pin by switching a resistor. In this application, a general
purpose MOSFET BSS138 is used with a VGS(th) of 1.6 V. A DSP 3.3-V I/O port drives the gate. The feedback
resistor network consists of R2, R3 and R4. C(ff) is the fast forward capacitor for improved line regulation.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| TPS60503DGSR | 功能描述:电荷泵 250-mA 1.5V Hi-Eff Step-Dwn Chrg Pump RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 输出电压:- 1.5 V to - 5.5 V, 3 V to 11 V 输出电流:100 mA 电源电流:1 mA 最大工作温度:+ 70 C 封装 / 箱体:SOIC-8 Narrow 封装:Tube |
| TPS60503DGSRG4 | 功能描述:电荷泵 250-mA 1.5V Hi-Eff Step-Dwn Chrg Pump RoHS:否 制造商:Maxim Integrated 功能:Inverting, Step Up 输出电压:- 1.5 V to - 5.5 V, 3 V to 11 V 输出电流:100 mA 电源电流:1 mA 最大工作温度:+ 70 C 封装 / 箱体:SOIC-8 Narrow 封装:Tube |
| TPS605A | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Optoelectronic |
| TPS605B | 制造商:未知厂家 制造商全称:未知厂家 功能描述:Optoelectronic |
| TPS605LB | 制造商:未知厂家 制造商全称:未知厂家 功能描述: |
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