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參數(shù)資料
| 型號： | HA17385HPS |
| 廠商： | Hitachi,Ltd. |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | High Speed Current Mode PWM Control IC for Switching Power Supply |
| 中文描述： | 高速開關電源電流模式PWM控制IC |
| 文件頁數(shù)： | 24/31頁 |
| 文件大小： | 145K |
| 代理商： | HA17385HPS |
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HA17384SPS/SRP, HA17384HPS/HRP, HA17385HPS/HRP
24
Application Circuit Example (1)
Notes:
P
Snubber circuit
example
51
470p
1kV
FRD
DFG1C8
1. : PRIMARY GND, : SECONDARY GND.
2. Check the wiring direction of the transformer coil.
3. Insert a snubber circuit if necessary.
4. OVP function is not included in HA17384SPS/SRP.
Commercial
AC 100V
Rectifier bridge diode
+
+
Line filter
Transformer specification
example
EI-22 type core
(H7C18
×
06Z)
Gap length
lg = 0.3mm
Transformer coil example
P: 0.580T/570
μ
H
S: 0.516T Bifiler/22
μ
H
B: 0.244T/170
μ
H
S
(Opetation Theory)
Because this circuit is a flyback type, the voltages in the
primary (P), secondary (s) coils of the transformer and
backup (B) coil are proportional to each other. Using this,
the output voltage of the backup coil (V
IN
of IC) is controlled
at constant 16.4V. (The voltage of the point divided by
resistors of 20k
and 3.6k
is 2.5V).
20k
3.6k
100
μ
200V
1000
μ
10V
R
T
10k
220k
1/4W
10
μ
50V
V
IN
16.4V
0.1
μ
51
1k
1k
B
P
S
HRP32
DC 5V, 3A
OUTPUT
Vref
V
IN
OUT
GND
COMP
FB
HA17384H,
HA17385H
2SK1567
SBD
HRP24
CS
R
T
/C
T
+
+
+
1
2W
100p
150k
470p
C
3300p
141V
10k
2SA1029
HA17431
10k
47k
Figure 12 Primary Voltage Sensing Flyback Converter
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| HA17385HPS/HRP | 制造商:HITACHI 制造商全稱:Hitachi Semiconductor 功能描述:High Speed Current Mode PWM Control IC for Switching Power Supply |
| HA17385HRP | 制造商:RENESAS 制造商全稱:Renesas Technology Corp 功能描述:High Speed Current Mode PWM Control IC for Switching Power Supply |
| HA17385HRP(E) | 制造商:Renesas Electronics Corporation 功能描述: |
| HA17385PS | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Current-Mode SMPS Controller |
| HA17393 | 制造商:Panasonic Industrial Company 功能描述:I.C. |
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