参数资料
| 型号： | NCP4331DR2G |
| 厂商： | ON Semiconductor |
| 文件页数： | 12/22页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR BUCK PWM 16-SOIC |
| 标准包装： | 2,500 |
| PWM 型： | 控制器 |
| 输出数： | 2 |
| 频率 - 最大： | 400kHz |
| 电源电压： | 最高 30V |
| 降压： | 是 |
| 升压： | 无 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 无 |
| 工作温度： | -40°C ~ 125°C |
| 封装/外壳： | 16-SOIC（0.154"，3.90mm 宽） |
| 包装： | 带卷 (TR) |
NCP4331
D3
X1
D1
L1
V out1
Demag.
Winding
D2
+
C1
LOAD1
Forward
Input
Source
Forward
Controller
GND
X2
V in
X12
Feed-back
with
isolation
NCP4331
L2
V out2
NCP4331
Driven
X13
+
C2
LOAD2
Post-Regulator
Feed-back
Figure 20. NCP4331 Post-Regulator Associated to a Forward Converter
I n the case of a forward operating in continuous
conduction mode (CCM) operation, the cycle is simply
given by the following equation (the converter losses being
neglected):
V in (Post-
Regulator
Input Voltage
d F +
N
N
S
P
V out1
@ V in
forward
(eq. 1)
High-Side
MOSFET Drive
The duty-cycle of the
Where:
d F is the forward duty cycle,
N S /N P is the transformer turn ratio (N P : primary number of
turns, N S : secondary number of turns),
(V in ) forward is the forward converter input voltage,
V out1 is the main output voltage of the forward converter.
http://onsemi.com
12
high-side MOSFET is
modulated by adjusting the
leading edge of its drive
(Leading Edge Modulation)
Figure 21. Leading Edge Modulation
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| NCP4350DR2G | 功能描述:IC SUPERVISOR DESKTOP PS 16-SOIC RoHS:是 类别:集成电路 (IC) >> PMIC - 监控器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:- 类型:简单复位/加电复位 监视电压数目:1 输出:推挽式，图腾柱 复位:低有效 复位超时:最小 145 ms 电压 - 阀值:2.64V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:16-WQFN 裸露焊盘 供应商设备封装:16-TQFN-EP（4x4） 包装:带卷 (TR) |
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