Electronic Components Datasheet Search
Selected language     English  ▼
Part Name
         Description


NCP1030_06 Datasheet(PDF) 2 Page - ON Semiconductor

Part No. NCP1030_06
Description  Low Power PWM Controller with On−Chip Power Switch and Startup Circuits for 48V Telecom Systems
Download  18 Pages
Scroll/Zoom Zoom In 100% Zoom Out
Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
Logo 

 
 2 page
background image
NCP1030, NCP1031
http://onsemi.com
2
Figure 1. NCP1030/31 Functional Block Diagram
Thermal
Shutdown
One Shot
Pulse
IO
+
Reset
Dominant
Latch
S
R
7.5 V/10 V
10 V
6.5 V
2.5 V
LEB
Reset
Dominant
Latch
SQ
R
50 mV
+
+
+
+
2.5 V
+
Internal Bias
16 V
10 V
10 V
10 V
10 V
GND
VFB
COMP
UV
OV
Disable
3.0 V/3.5 V
+
PWM Latch
PWM Comparator
Error Amplifier
Current Limit
Comparator
VDRAIN
RSENSE
10 V
VCC
CT
I1
I2 = 3I1
Q
CT Ramp
+
+
2 k
W
4.5 V
ISTART
FUNCTIONAL PIN DESCRIPTION
Pin
Name
Function
Description
1
GND
Ground
Ground reference pin for the circuit.
2
CT
Oscillator Frequency
Selection
An external capacitor connected to this pin sets the oscillator frequency up to 1 MHz.
The oscillator can be synchronized to a higher frequency by charging or discharging
CT to trip the internal 3.0 V/3.5 V comparator. If a fault condition exists, the power
switch is disabled and the frequency is reduced by a factor of 7.
3
VFB
Feedback Input
The regulated voltage is scaled down to 2.5 V by means of a resistor divider.
Regulation is achieved by comparing the scaled voltage to an internal 2.5 V reference.
4
COMP
Error Amplifier Compensation
Requires external compensation network between COMP and VFB pins. This pin is
effectively grounded if faults are present.
5
OV
Line Overvoltage Shutdown
Line voltage (Vin) is scaled down using an external resistor divider such that the OV
voltage reaches 2.5 V when line voltage reaches its maximum operating voltage.
6
UV
Line Undervoltage Shutdown
Line voltage is scaled down using an external resistor divider such that the UV
voltage reaches 2.5 V when line voltage reaches its minimum operating voltage.
7
VCC
Supply Voltage
This pin is connected to an external capacitor for energy storage. During Turn−On, the
startup circuit sources current to charge the capacitor connected to this pin. When the
supply voltage reaches VCC(on), the startup circuit turns OFF and the power switch is
enabled if no faults are present. An external winding is used to supply power after
initial startup to reduce power dissipation. VCC should not exceed 16 V.
8
VDRAIN
Power Switch and
Startup Circuits
This pin directly connects the Power Switch and Startup Circuits to one of the
transformer windings. The internal High Voltage Power Switch Circuit is connected
between this pin and ground. VDRAIN should not exceed 200 V.




Html Pages

1  2  3  4  5  6  7  8  9  10  11  12  13  14  15  16  17  18 


Datasheet Download



Related Electronics Part Number

Part NumberComponents DescriptionHtml ViewManufacturer
ISL6322Four-Phase Buck PWM Controller with Integrated MOSFET Drivers and I2C Interface for Intel VR10 VR11 and AMD Applications 1 2 3 4 5 MoreIntersil Corporation
CX74063-3XRF Transceiver with Power Ramping Controller and Integrated Crystal Oscillator with 13 MHz Output for Multi-Band GSM GPRS and EDGE Applications 1 2 3 4 5 MoreSkyworks Solutions Inc.
IR36212-PHASE / DUAL SYNCHRONOUS PWM CONTROLLER WITH OSCILLATOR SYNCHRONIZATION AND PRE-BIAS STARTUP 1 2 3 4 5 MoreInternational Rectifier
ISL6327Enhanced 6-Phase PWM Controller with 8-Bit VID Code and Differential Inductor DCR or Resistor Current Sensing 1 2 3 4 5 MoreIntersil Corporation
CS5301_06Three−Phase Buck Controller with Integrated Gate Drivers and Power Good 1 2 3 4 5 MoreON Semiconductor
MAX5953AIEEE 802.3af PD Interface and PWM Controllers with Integrated Power MOSFETs 1 2 3 4 5 MoreMaxim Integrated Products
ADS850716-BIT 40-KSPS LOW POWER SAMPLING ANALOG-TO-DIGITAL CONVERTER WITH INTERNAL REFERENCE AND PARALLEL/SERIAL INTERFACE 1 2 3 4 5 MoreTexas Instruments
NCP348Positive Overvoltage Protection Controller with Internal Low R_ON NMOS FET and Status FLAG 1 2 3 4 5 MoreON Semiconductor
CAT1161_07Supervisory Circuits with I2C Serial CMOS EEPROM Precision Reset Controller and Watchdog Timer 1 2 3 4 5 MoreCatalyst Semiconductor
ADP1822PWM Step-Down DC-to-DC Controller with Margining and Tracking 1 2 3 4 5 MoreAnalog Devices

Link URL

Does ALLDATASHEET help your business so far?  [ DONATE ]  

About Alldatasheet   |   Advertisement   |   Datasheet Upload   |   Contact us   |   Privacy Policy   |   Bookmark   |   Link Exchange   |   Manufacturer List
All Rights Reserved© Alldatasheet.com 2003 - 2017    


Mirror Sites
English : Alldatasheet.com  , Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp  |   Russian : Alldatasheetru.com
Korean : Alldatasheet.co.kr   |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com  |   Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl