参数资料
| 型号： | NCP1397ADR2G |
| 厂商： | ON Semiconductor |
| 文件页数： | 2/27页 |
| 文件大小： | 0K |
| 描述： | IC REG CTRLR ISO PWM 16-SOIC |
| 标准包装： | 2,500 |
| PWM 型： | 控制器 |
| 输出数： | 1 |
| 频率 - 最大： | 560kHz |
| 占空比： | 52% |
| 电源电压： | 10.3 V ~ 20 V |
| 降压： | 无 |
| 升压： | 无 |
| 回扫： | 无 |
| 反相： | 无 |
| 倍增器： | 无 |
| 除法器： | 无 |
| Cuk： | 无 |
| 隔离： | 是 |
| 工作温度： | -40°C ~ 125°C |
| 封装/外壳： | 16-SOIC（0.154"，3.90mm 宽）15 引线 |
| 包装： | 带卷 (TR) |
第1页当前第2页第3页第4页第5页第6页第7页第8页第9页第10页第11页第12页第13页第14页第15页第16页第17页第18页第19页第20页第21页第22页第23页第24页第25页第26页第27页
NCP1397A, NCP1397B
R18
Figure 1. Typical Application Example
PIN FUNCTION DESCRIPTION
Pin #
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Pin Name
CSS(dis)
Fmax
Ctimer
Rt
BO
FB
DT
Skip/Disable
Fault
GND
Mlower
V CC
NC
HB
Mupper
Vboot
Function
Soft ? Start Discharge
Maximum frequency clamp
Timer duration
Minimum frequency clamp
Brown ? Out
Feedback
Deadtime
Skip or Disable input
Fault detection input
Analog ground
Low side output
Supplies the controller
Not connected
Half ? bridge connection
High side output
Bootstrap pin
Pin Description
Soft ? start capacitor discharge pin. Connect to the soft ? start capacitor to reset it
before startup or during overload conditions.
A resistor sets the maximum frequency excursion
Sets the timer duration in presence of a fault
Connecting a resistor to this pin, sets the minimum oscillator frequency reached
for V FB = 1 V.
Detects low input voltage conditions. When brought above V latch (4 V typically), it
fully latches off the controller.
Injecting current into this pin increases the oscillation frequency up to Fmax.
A simple resistor adjusts the dead ? time width
Upon release, a clean startup sequence occurs if V FB < 0.3 V. During the skip
mode, when FB doesn’t drop below 0.3 V, the IC restarts without soft ? start
sequence.
When asserted, the external timer starts to countdown and shuts down the
controller at the end of its time duration. Simultaneously the Soft ? Start discharge
switch is activated so the converter operating frequency goes up to protect
application power stage. This input features also second fault comparator with
higher threshold (1.5 V typically) that:
A) Speeds up the timer capacitor charging current 8 times – NCP1397A
B) latches off the IC permanently – NCP1397B
In both versions the second fault comparator helps to protect application in case
of short circuit on the output or transformer secondary winding.
?
Drives the lower side MOSFET
The controller accepts up to 20 V
Increases the creepage distance
Connects to the half ? bridge output
Drives the higher side MOSFET
The floating V CC supply for the upper stage
http://onsemi.com
2
相关PDF资料 |
PDF描述 |
|---|---|
| NCP1417DMR2 | IC REG BST SYNC ADJ 0.2A 8MICRO |
| NCP1421DMR2 | IC REG BST SYNC ADJ 0.6A 8MICRO |
| NCP1450ASN50T1G | IC REG CTRLR BST PWM VM 5TSOP |
| NCP1521BMUTBG | IC REG BUCK SYNC ADJ 0.6A 6UDFN |
| NCP1522ASNT1G | IC REG BUCK SYNC ADJ 0.6A 5TSOP |
相关代理商/技术参数 |
参数描述 |
|---|---|
| NCP1397B | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:High Performance Resonant Mode Controller with Integrated High-Voltage Drivers |
| NCP1397BDR2G | 功能描述:电流型 PWM 控制器 NCP1397B RoHS:否 制造商:Texas Instruments 开关频率:27 KHz 上升时间: 下降时间: 工作电源电压:6 V to 15 V 工作电源电流:1.5 mA 输出端数量:1 最大工作温度:+ 105 C 安装风格:SMD/SMT 封装 / 箱体:TSSOP-14 |
| NCP1397DR2G | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:High Performance Resonant Mode Controller with Integrated High-Voltage Drivers |
| NCP1398_13 | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:High Performance Resonant Mode Controller with Integrated High-Voltage Drivers |
| NCP1398B | 制造商:ONSEMI 制造商全称:ON Semiconductor 功能描述:High Performance Resonant Mode Controller with Integrated High-Voltage Drivers |
发布紧急采购，3分钟左右您将得到回复。