- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄364685 > ML4818CP (FAIRCHILD SEMICONDUCTOR CORP) Phase Modulation/Soft Switching Controller PDF資料下載
參數(shù)資料
| 型號： | ML4818CP |
| 廠商： | FAIRCHILD SEMICONDUCTOR CORP |
| 元件分類： | 穩(wěn)壓器 |
| 英文描述： | Phase Modulation/Soft Switching Controller |
| 中文描述： | 1.5 A SWITCHING CONTROLLER, 500 kHz SWITCHING FREQ-MAX, PDIP24 |
| 封裝： | POWER, PLASTIC, DIP-24 |
| 文件頁數(shù)： | 1/13頁 |
| 文件大?。?/td> | 92K |
| 代理商： | ML4818CP |
www.fairchildsemi.com
REV. 1.0.3 6/21/01
Features
Full bridge phase modulation zero voltage switching
circuit with programmable ZV transition times
Constant frequency operation to 500kHz
Current mode operation
Cycle-by-cycle current limiting with integrating fault
detection and restart delay
Precision buffered 5V reference (+1%)
Four 1.5A peak current totem-pole output drivers
Under-voltage lockout circuit with 6V hysteresis
Power DIP package
General Description
The ML4818 is a complete phase modulation control IC suit-
able for full bridge soft switching converters. Unlike conven-
tional PWM circuits, the phase modulation technique allows
for zero-voltage switching transitions and square wave drive
across the transformer. The IC modulates the phases of the
two sides of the bridge to control output power.
The ML4818 can be operated in current mode. The delay
times for the outputs are externally programmable to allow
the zero-voltage switching transitions to take place.
Pulse-by-pulse current limit, integrating fault detection, and
soft start reset are provided. The under-voltage lockout cir-
cuit features a 6V hysteresis with a low starting current to
allow off-line start up with a low power bleed resistor. A
shutdown function powers down the IC, putting it into a low
quiescent state.
Block Diagram
10
13
11
2
3
5
8
9
12
4
24
20
16
17
22
21
14
*
I
LIM
RC
RESET
SOFT START
INV
E/A OUT
C
T
RAMP
R
T
CLOCK
SHUTDOWN
V
REF
V
CC
A2 OUT
A1 OUT
B1 OUT
B2 OUT
R
DELAY
GND
REFERENCE
AND
UNDER-VOLTAGE
LOCKOUT
–
+
T FLIP
FLOP
T
Q
Q
S
Q
R
OSC
Q
+
Φ
MOD
–
EAMP
+
V+
I
1
+5V
3V
Q
R
S
+
–
1V
DELAY
V
CC
DELAY
V
CC
DELAY
V
CC
DELAY
INHIBIT
OUTPUTS
*PINS 1, 6, 7, 15, 18, 19 AND 23 ARE GND
0.7V
I
2
+
R
S
ML4818
Phase Modulation/S oft S witc hing Controller
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| 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 |
| AP1119Y50A | 0.5A Positive Low Dropout Fixed-Mode Regulator With EN Function |
| AP1119Y50L | 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 |
|---|---|
| ML4818CP | 制造商:Fairchild Semiconductor Corporation 功能描述:CONTROLLER IC ROHS COMPLIANT:NO |
| ML4818CS | 制造商:MICRO-LINEAR 制造商全稱:MICRO-LINEAR 功能描述:Phase Modulation/Soft Switching Controller |
| ML4819 | 制造商:MICRO-LINEAR 制造商全稱:MICRO-LINEAR 功能描述:Power Factor and PWM Controller Combo |
| ML4819CP | 功能描述:開關(guān)變換器、穩(wěn)壓器與控制器 PFC Controller RoHS:否 制造商:Texas Instruments 輸出電壓:1.2 V to 10 V 輸出電流:300 mA 輸出功率: 輸入電壓:3 V to 17 V 開關(guān)頻率:1 MHz 工作溫度范圍: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:WSON-8 封裝:Reel |
| ML4819CS | 制造商:MICRO-LINEAR 制造商全稱:MICRO-LINEAR 功能描述:Power Factor and PWM Controller Combo |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。