- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄364685 > AP1086K25A 1.5A Low Dropout Positive Adjustable or Fixed-Mode Regulator PDF資料下載
參數(shù)資料
| 型號： | AP1086K25A |
| 英文描述： | 1.5A Low Dropout Positive Adjustable or Fixed-Mode Regulator |
| 中文描述： | 1.5A的低壓差正可調(diào)或固定模式穩(wěn)壓器 |
| 文件頁數(shù)： | 6/13頁 |
| 文件大?。?/td> | 92K |
| 代理商： | AP1086K25A |
PRODUCT SPECIFICATION
ML4818
REV. 1.0.3 6/21/01
6
Functional Description
Phase Modulator
Power is controlled by modulating the switching phase on
sides A and B of the full H-bridge converter (Figure 1).
Power is delivered to the output through the transformer sec-
ondary. The power conversion process is described by the
following sequence and illustrated by the timing diagram of
Figure 2:
1.
A2 and B1 are high (Q1 and Q2 are on), beginning the
power conversion cycle.
2.
After the
Φ
MOD comparator trips, B1 goes low turning
off Q2. The parasitic drain-to-source capacitances of Q2
and Q4 charge to +VIN. This forces the drain-to-source
voltage across Q3 to 0V.
3.
B2 now goes high after t
DELAY
(set by R
DELAY
). Since the
voltage across Q3 is now 0V, B2 turns Q3 on at zero
voltage.
4.
The CLOCK now goes high turning A2 off. During this
period, Q1 and Q2 and Q4 are off. The transformer leak-
age current discharges the drain-to-source capacitance
on Q4 until there is 0V across it.
5.
A1 will remain low for a period defined by t
DELAY
, then it
goes high. The voltage across Q4 is now 0V as A1 turns
it on at zero voltage.
6.
The previous sequence is now repeated with the oppo-
site polarity on all outputs (see Figure 2).
The above sequence is then repeated but with the opposite
polarity on all outputs.
Figure 1. Simplified diagram of Phase Modulated power Outputs
Figure 2. Phase Modulation control waveforms (Shaded areas indicate a power cycle)
B2
B1
A2
A1
I
LIM
R
SENSE
T
B
Q3
Q2
Q4
Q1
T
A
TRANSFORMER
L
LEAKAGE
B
A
+VIN
ML4818
t
DELAY
t
DELAY
t
DELAY
t
DELAY
t
DELAY
t
PD1
t
PD1
t
DELAY
t
PD1
C
T
CLOCK
A2
A1
B1
B2
B
A
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| ML4818 | Phase Modulation/Soft Switching Controller |
| ML4818CP | Phase Modulation/Soft Switching Controller |
| AP1119Y12A | 0.5A Positive Low Dropout Fixed-Mode Regulator With EN Function |
| AP1119 | 0.5A Positive Low Dropout Fixed-Mode Regulator With EN Function |
| AP1119Y12 | 0.5A Positive Low Dropout Fixed-Mode Regulator With EN Function |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AP1086K25G-13 | 功能描述:低壓差穩(wěn)壓器 - LDO 3-TERM ADJ OR FIXED 1.4V LDO 3.3V LOGIC RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| AP1086K25G-U | 制造商:DIODES 制造商全稱:Diodes Incorporated 功能描述:1.5A LOW DROPOUT POSITIVE ADJUSTABLE OR FIXED-MODE REGULATOR |
| AP1086K25L | 制造商:ANACHIP 制造商全稱:Anachip Corp 功能描述:1.5A Low Dropout Positive Adjustable or Fixed-Mode Regulator |
| AP1086K25L-13 | 功能描述:低壓差穩(wěn)壓器 - LDO LDO BI 1.5A 1.4V 12V 1.25V 2.5V FIX RoHS:否 制造商:Texas Instruments 最大輸入電壓:36 V 輸出電壓:1.4 V to 20.5 V 回動電壓（最大值）:307 mV 輸出電流:1 A 負(fù)載調(diào)節(jié):0.3 % 輸出端數(shù)量: 輸出類型:Fixed 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:VQFN-20 |
| AP1086K25LA | 制造商:ANACHIP 制造商全稱:Anachip Corp 功能描述:1.5A Low Dropout Positive Adjustable or Fixed-Mode Regulator |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。