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參數(shù)資料
| 型號(hào)： | NCP1560 |
| 廠商： | ON SEMICONDUCTOR |
| 英文描述： | Full Featured Voltage Mode PWM Controller(全性能電壓模式PWM控制器) |
| 中文描述： | 全功能電壓模式PWM控制器（全性能電壓模式的PWM控制器） |
| 文件頁(yè)數(shù)： | 4/18頁(yè) |
| 文件大小： | 122K |
| 代理商： | NCP1560 |
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NCP1560
http://onsemi.com
4
PIN DESCRIPTION
Pin
Name
Application Information
1
V
in
This pin is connected to the bulk DC input voltage supply. A constant current source supplies current from
this pin to the capacitor connected on the V
AUX
pin. The charge current is typically 13.8 mA. Input voltage
range is 21.5 V to 150 V.
2
UV/OV
Input supply voltage is scaled down and sampled by means of a resistor divider. The supply voltage must
be scaled down between 1.52 V and 3.61 V within the specified input voltage range.
3
NC
Not Connected.
4
FF
An external resistor between V
and this pin adjusts the amplitude of the FF Ramp in proportion to V
. By
varying the feedforward ramp amplitude in proportion to the input voltage, changes in loop bandwidth are
eliminated.
5
CS
Over current sense input. If the CS voltage exceeds 0.48 V or 0.57 V, the converter enters the Cycle by
Cycle or Cycle Skip current limit mode, respectively.
6
CSKIP
The capacitor connected between this pin and ground sets the Cycle Skip period. A soft start sequence
follows at the conclusion of the fault period.
7
R
T
A single external resistor between this pin and GND sets the oscillator fixed frequency.
8
DC
MAX
An external resistor between this pin and GND sets the voltage on the Max DC Comparator inverting in-
put. The duty cycle is limited by comparing the voltage on the Max DC Comparator inverting input to the
Feedforward Ramp.
9
SS
An internal 6.2 A current source charges the external capacitor connected to this pin. The duty cycle is
limited during start-up by comparing the voltage on this pin to the Oscillator Ramp.
10
V
EA
The error signal from an external error amplifier is fed into this input and compared to the Feedforward
Ramp. A series diode and resistor offset the voltage on this pin before it is applied to the PWM Compara-
tor inverting input.
11
V
REF
Precision 5.0 V reference output. Maximum output current is 6 mA.
12
t
D
An external resistor between V
REF
and this pin sets the overlap delay between OUT1 and OUT2 transi-
tions.
13
OUT2
Output of the PWM controller with leading and trailing edge overlap delay. OUT2 can be used to drive a
synchronous rectifier topology, an active clamp/reset switch, or both.
14
GND
Control circuit ground.
15
OUT1
Main output of the PWM controller.
16
V
AUX
Positive input supply voltage. This pin is connected to an external capacitor for energy storage. An inter-
nal current supplies current from V
in
to this pin. Once the voltage on V
AUX
reaches 11 V, the current
source turns OFF. It turns ON again once V
AUX
falls to 7 V. During normal operation, power is supplied to
the IC via this pin, by means of an auxiliary winding.
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| NCP1561DR2G | 功能描述:直流/直流開關(guān)轉(zhuǎn)換器 Dual Output PWM RoHS:否 制造商:STMicroelectronics 最大輸入電壓:4.5 V 開關(guān)頻率:1.5 MHz 輸出電壓:4.6 V 輸出電流:250 mA 輸出端數(shù)量:2 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT |
| NCP1562-100WEVBG | 功能描述:電源管理IC開發(fā)工具 100 W 48 V TELECOM BRICK RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:Battery Management 工具用于評(píng)估:MAX17710GB 輸入電壓: 輸出電壓:1.8 V |
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