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參數(shù)資料
| 型號(hào)： | FSD210BM |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Green Mode Fairchild Power Switch (FPS) |
| 中文描述： | 0.365 A SWITCHING REGULATOR, 142 kHz SWITCHING FREQ-MAX, PDSO7 |
| 封裝： | LSOP-7 |
| 文件頁(yè)數(shù)： | 11/18頁(yè) |
| 文件大小： | 853K |
| 代理商： | FSD210BM |
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FSD210B, FSD200B
11
6. Burst operation :
In order to minimize the power dissi-
pation in standby mode, the FSD200B/210B enter burst
mode operation. As the load decreases, the feedback voltage
decreases. The device automatically enters burst mode when
the feedback voltage drops below V
BURL
(0.58V). At this
point switching stops and the output voltages start to drop.
This causes the feedback voltage to rise. Once is passes
V
BURH
(0.64V) switching starts again. The feedback voltage
falls and the process repeats. Burst mode operation alter-
nately enables and disables switching of the power MOSFET
to reduce the switching loss in the standby mode.
Figure 12. Burst Operation Function
7. Frequency Modulation
: Modulating the switching fre-
quency of a switched power supply can reduce EMI by
spreading the energy over a wider frequency range than the
bandwidth measured by the EMI test equipment. The
amount of EMI reduction is directly related to the depth of
the reference frequency. As can be seen in Figure 13, the fre-
quency changes from 130KHz to 138KHz in 4ms for the
FSD200B/210B. Frequency modulation allows the use of a
cost effective inductor instead of an AC input mode choke to
satisfy the requirements of world wide EMI limits.
Figure 13. Frequency Modulation Waveform
Figure 14. FSDH0165 Full Range EMI scan(100kHz, no
Frequency Modulation) with charger set
Figure 15. FSD210B Full Range EMI scan(134kHz, with
Frequency Modulation) with charger set
V
FB
Vds
0.58V
0.64V
Ids
Vo
Vo
set
t
OSC
4
Vfb
S
R
Q
GATE
DRIVER
5uA
250uA
0.64V
/0.58V
on/off
FSD2xxB
Burst Operation Block
t
s
f
s
=1/t
s
134kHz
130kHz
138kHz
4ms
t
Drain
Current
Frequency(MHz)
A
μ
V
CISPR22Q(PK)
CISPR22A(AV)
A
μ
V
Frequency(MHz)
CISPR22Q(PK)
CISPR22A(AV)
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| FSD210BMX | 功能描述:電源開關(guān) IC - 配電 SMPS Power Switch for Chargers RoHS:否 制造商:Exar 輸出端數(shù)量:1 開啟電阻（最大值）:85 mOhms 開啟時(shí)間（最大值）:400 us 關(guān)閉時(shí)間（最大值）:20 us 工作電源電壓:3.2 V to 6.5 V 電源電流（最大值）: 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-23-5 |
| FSD210DH | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Green Mode Fairchild Power Switch (FPS?) for Valley Switching Converter ? Low EMI and High Efficiency |
| FSD210HD | 功能描述:IC SWIT PWM GREEN UVLO HV 8DIP RoHS:是 類別:集成電路 (IC) >> PMIC - AC-DC 轉(zhuǎn)換器，離線開關(guān) 系列:- 標(biāo)準(zhǔn)包裝:1 系列:FPS™ 輸出隔離:隔離 頻率范圍:61kHz ~ 73kHz 輸入電壓:8 V ~ 26 V 輸出電壓:650V 功率（瓦特）:12W 工作溫度:-40°C ~ 115°C 封裝/外殼:8-DIP（0.300"，7.62mm） 供應(yīng)商設(shè)備封裝:8-MDIP 包裝:Digi-Reel® 其它名稱:FSL206MRBNFSDKR |
| FSD210M | 制造商:FAIRCHILD 制造商全稱:Fairchild Semiconductor 功能描述:Green Mode Fairchild Power Switch (FPSTM) |
| FSD211H | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
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