|
|
PDF ICE2QR2280Z Data sheet ( Hoja de datos )
| Número de pieza | ICE2QR2280Z | |
| Descripción | Off-Line SMPS Quasi-Resonant PWM Controller | |
| Fabricantes | Infineon Technologies | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de ICE2QR2280Z (archivo pdf) en la parte inferior de esta página. Total 21 Páginas | ||
|
No Preview Available !
Datasheet,Version 2.1, August 30, 2011
®
Never stop thinking.
1 page  
CoolSET® - Q1
ICE2QR2280Z
Pin Configuration and Functionality
1 Pin Configuration and Functionality
1.1 Pin Configuration with PG-DIP-7 1.3
Pin Functionality
1.2 Package PG-DIP-7
Pin Symbol Function
1 ZC Zero crossing
2 FB Feedback
ZC (Zero Crossing)
At this pin, the voltage from the auxiliary winding after
a time delay circuit is applied. Internally, this pin is
connected to the zero-crossing detector for switch-on
determination. Additionally, the output overvoltage
detection is realized by comparing the voltage Vzc with
an internal preset threshold.
3 CS Current Sense
4 N.C. No connection
5 Drain 800V CoolMOS™ Drain
6 - No Pin
7 VCC Controller Supply Voltage
8 GND Controller Ground
FB (Feedback)
Normally, an external capacitor is connected to this pin
for a smooth voltage VFB. Internally, this pin is
connected to the PWM signal generator for switch-off
determination (together with the current sensing
signal), the digital signal processing for the frequency
reduction with decreasing load during normal
operation, and the Active Burst Mode controller for
entering Active Burst Mode operation determination
and burst ratio control during Active Burst Mode
operation. Additionally, the open-loop / over-load
protection is implemented by monitoring the voltage at
this pin.
ZC 1
FB 2
CS 3
NC 4
8 GND
7 VCC
5 Drain
Figure 1 Pin Configuration PG-DIP7 (top view)
CS (Current Sense)
This pin is connected to the external shunt resistor for
the primary current sensing and the internal PWM
signal generator for switch-off determination (together
with the feedback voltage). Moreover, short-winding
protection is realised by monitoring the voltage Vcs
during on-time of the main power switch.
Drain (Drain of integrated CoolMOS®)
Drain pin is the connection to the drain of the internal
CoolMOS®.
VCC (Power supply)
VCC pin is the positive supply of the IC. The operating
range is between VVCCoff and VVCCOVP.
GND (Ground)
This is the common ground of the controller.
Version 2.1
5 August 30, 2011
5 Page 
CoolSET® - Q1
ICE2QR2280Z
Functional Description
immediately after leaving Active Burst Mode. This is
helpful to decrease the output voltage undershoot.
VFB
VFBLB
VFBBOn
VFBBOff
Entering
Active Burst
Mode
Leaving
Active Burst
Mode
VFBEB
VCS
time to 7th zero and
blanking Window (tBEB)
t
1.0V
VCSB
VVCC
Current limit level
during Active Burst
Mode
t
VVCCoff
VO
Max. Ripple < 1%
t
IC is reset and the main power switch is then kept off.
After the VCC voltage falls below the threshold VVCCoff,
the startup cell is activated. The VCC capacitor is then
charged up. Once the voltage exceeds the threshold
VVCCon, the IC begins to operate with a new soft-start.
In case of open control loop or output over load, the
feedback voltage will be pulled up. After a blanking time
of 24ms, the IC enters auto-restart mode. The blanking
time here enables the converter to provide a max.
power in case the increase in VFB is due to a sudden
load increase. During off-time of the power switch, the
voltage at the zero-crossing pin is monitored for output
over-voltage detection. If the voltage is higher than the
preset threshold vZCOVP, the IC is latched off after the
preset blanking time. This latch off mode can only be
reset if the Vcc <6.23V.
If the junction temperature of IC exceeds 140 °C, the IC
enters into autorestart mode (OTP).
If the voltage at the current sensing pin is higher than
the preset threshold vCSSW during on-time of the power
switch, the IC is latched off. This is short-winding
protection.
During latch-off protection mode, the VCC voltage
drops to 10.5V and then the startup cell is activated.
The VCC voltage is then charged to 18V. The startup
cell is shut down again. This action repeats again and
again.
There is also a maximum on time limitation
implemented inside the ICE2QR2280Z. Once the gate
voltage is high and longer than tOnMAx, the switch is
turned off immediately.
Figure 8 Signals in Active Burst Mode
t
3.6 Protection Functions
The IC provides full protection functions. The following
table summarizes these protection functions.
Table 2 Protection features
VCC Overvoltage
Auto Restart Mode
VCC Undervoltage
Auto Restart Mode
Overload/Open Loop
Auto Restart Mode
Over temperature
Auto Restart Mode
Output Overvoltage
Latched Off Mode
Short Winding
Latched Off Mode
During operation, the VCC voltage is continuously
monitored. In case of an under- or an over-voltage, the
Version 2.1
11
August 30, 2011
11 Page | ||
| Páginas | Total 21 Páginas | |
| PDF Descargar | [ Datasheet ICE2QR2280Z.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| ICE2QR2280G-1 | Off-Line SMPS Quasi-Resonant PWM Controller |  Infineon |
| ICE2QR2280Z | Off-Line SMPS Quasi-Resonant PWM Controller | Infineon Technologies |
| ICE2QR2280Z-1 | Off-Line SMPS Quasi-Resonant PWM Controller | Infineon |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |