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參數(shù)資料
| 型號(hào)： | SI3210PPQ1-EVB |
| 廠商： | Silicon Laboratories Inc |
| 文件頁(yè)數(shù)： | 80/148頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | BOARD EVAL W/SI3201 INTERFACE |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | ProSLIC® |
| 主要目的： | 接口，模擬前端（AFE） |
| 已用 IC / 零件： | Si3210 |
| 已供物品： | 板，CD |
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Si3210/Si3211
Rev. 1.61
37
Not
Recommended
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ew
D
esi
gn
s
boost dc-dc converter that converts a positive dc
voltage into the desired negative battery voltage. In
addition to eliminating external power supplies, this
allows the Si3210 to dynamically control the battery
voltage to the minimum required for any given mode of
operation.
Two different dc-dc circuit options are offered: a BJT/
inductor version and a MOSFET/transformer version.
Due to the differences on the driving circuits, there are
two different versions of the Si3210. The Si3210
supports the BJT/inductor circuit option, and the
Si3210M version supports the MOSFET solution. The
only difference between the two versions is the polarity
of the DCFF pin with respect to the DCDRV pin. For the
Si3210, DCDRV and DCFF are of opposite polarity. For
the Si3210M, DCDRV and DCFF are the same polarity.
Table 27 summarizes these differences.
Extensive design guidance on each of these circuits can
be obtained from “AN45: Design Guide for the Si3210
DC-DC Converter” and from an interactive dc-dc
converter design spreadsheet. Both of these documents
are available on the Silicon Laboratories website
(www.silabs.com).
2.2.2. BJT/Inductor Circuit Option Using Si3210
The BJT/Inductor circuit option shown in Figure 10 on
page 18 offers a flexible, low-cost solution. Depending
on selected L1 inductance value and the switching
frequency, the input voltage (VDC) can range from 5 V to
30 V. Because of the nature of a dc-dc converter’s
operation, peak and average input currents can become
large with small input voltages. Consider this when
selecting the appropriate input voltage and power rating
for the VDC power supply.
For this solution, a PNP power BJT (Q7) switches the
current flow through low ESR inductor L1. The Si3210
uses the DCDRV and DCFF pins to switch Q7 on and
off. DCDRV controls Q7 through NPN BJT Q8. DCFF is
ac-coupled to Q7 through capacitor C10 to assist R16 in
turning off Q7. Therefore, DCFF must have opposite
polarity to DCDRV, and the Si3210 (not Si3210M) must
be used.
Table 27. Si3210 and Si3210M Differences
Device
DCFF Signal
Polarity
DCPOL
Si3210
= DCDRV
0
Si3210M
= DCDRV
1
Notes:
1. DCFF signal polarity with respect to DCDRV signal.
2. Direct Register 93, bit 5; This is a read-only bit.
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參數(shù)描述 |
|---|---|
| SI3210-PPQX-EVB | 制造商:Silicon Laboratories Inc 功能描述: |
| SI3210PPQX-EVB | 功能描述:音頻 IC 開(kāi)發(fā)工具 Si3210 EVALUATION BOARD - QFN RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評(píng)估:TAS5614L 工作電源電壓:12 V to 38 V |
| SI3210PPT1-EVB | 功能描述:音頻 IC 開(kāi)發(fā)工具 USE 634-3210-PPQXEVB RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評(píng)估:TAS5614L 工作電源電壓:12 V to 38 V |
| SI3210PPTX-EVB | 功能描述:音頻 IC 開(kāi)發(fā)工具 U 634-3210-PPQX-EVB RoHS:否 制造商:Texas Instruments 產(chǎn)品:Evaluation Kits 類型:Audio Amplifiers 工具用于評(píng)估:TAS5614L 工作電源電壓:12 V to 38 V |
| SI3210-QFN | 制造商:SILABS 制造商全稱:SILABS 功能描述:Perfroms all BORSCHT functions DC-DC controller provides tracking battery fromm a 3.3-35V input |
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