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WT7515のメーカーはWeltrendです、この部品の機能は「PC POWER SUPPLY SUPERVISOR」です。 |
部品番号 | WT7515 |
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部品説明 | PC POWER SUPPLY SUPERVISOR | ||
メーカ | Weltrend | ||
ロゴ | |||
このページの下部にプレビューとWT7515ダウンロード(pdfファイル)リンクがあります。 Total 11 pages
Weltrend Semiconductor, Inc.
`
WT7515
PC POWER SUPPLY SUPERVISOR
Data Sheet
REV. 1.50
May 07, 2004
The information in this document is subject to change without notice.
©Weltrend Semiconductor, Inc. All Rights Reserved.
24 2
2F, No. 24, Industry E. 9th RD., Science-Based Industrial Park, Hsin-Chu, Taiwan
TEL:886-3-5780241 FAX:886-3-5794278.5770419
Email:[email protected]
1 Page WT7515
Rev. 1.50
PIN DESCRIPTION
Pin Name TYPE
PGI I
GND
P
FPOB
O
PSONB
I
IS12
I
RI I
VCC2
I
IS5 I
IS33
I
V12 I
V33 I
V5 I
VCC
I
PGO
O
Description
Power good input signal pin
Ground
Fault protection output pin, open drain output
On/Off switch input
12V over current protection sense input
Current sense adjust input
Current sense power supply
5V over current protection sense input
3.3V over current protection sense input
12V over/under voltage input pin
3.3V over/under voltage input pin
5V over/under voltage input pin
Power supply
Power good output signal pin, open drain output
BLOCK DIAGRAM
VCC
VCCI
PSONB
V33
V5
V12
PGI
IS33
IS5
IS12
PWR
38ms
debounce
-
+
UN
-
+
OV
-
+
UN
-
+
OV
-
+
UN
VREF
-
+
OV
-
+
UN
VCC2
-
+
OI
IREF * 8
VCC2
-
+
OI
IREF * 8
VCC2
-
+
OI
IREF * 8
Power On Reset
RST
2.4ms
clr
delay
75ms
clr
delay
PWR
RST
73us
debounce
Bandgap
Reference
VREF = 1.2V
Internal
Power
PWR
VCCI = 3.6V
OSC
CLK
R
SQ
FPOB
RST
73us
debounce
300ms
clr
delay
PGO
V12
VREF
V12
+
-
IREF
RI
Weltrend Semiconductor, Inc.
Page 3
3Pages WT7515
Rev. 1.50
APPLICATION CIRCUIT
PSONB
+5VSB
10K
300
0.01uF
+5VSB
1K
PGI
30K, 1%
WT7515-141
+5V
1K
1uF
PGI PGO
GND
FPOB
VCC
V5
R0=47
PSONB
V33
IS12
RI
IS5
VCC2
V12
IS33
R0=47
22uF
R2, 1%
22uF
R1, 1%
NOTE1 The R0 can not be omitted at V5 and V33.
APPLICATION NOTE
22uF
R3, 1%
+5VSB
+3.3V
+3.3V input
+5V
+5V input
+12V
+12V input
When the current cross inductor raised, inductor voltage raised.
And when inductor voltage exceeded resistor voltage, the OCP active.
We can setup OCP point by the following equation
Let VR = VL
R * IR = RL * IL
IR = 8 * IREF
R * (8 * VREF / RI) = RL * IL
R = (RL * IL) / (8 * VREF / RI) ––––– (1)
Weltrend Semiconductor, Inc.
Page 6
6 Page | |||
ページ | 合計 : 11 ページ | ||
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PDF ダウンロード | [ WT7515 データシート.PDF ] |
データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。 |
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