ice2qr1065z Infineon Technologies Corporation, ice2qr1065z Datasheet - Page 5

• Manufacturer Part Number: ice2qr1065z
• Description: Of F -line Smps Quasi -resonant Pwm Cont Rol Ler Wi Th Integrated 650v Coolmos And Startup Cell In Dip-7
• Manufacturer: Infineon Technologies Corporation

1.1
1)
1.2
Figure 1
1
Version 2.0
Pin
1
2
3
4
5
7
8
at T
j
=110°C
Pin Configuration with PG-DIP-7
Symbol
Pin Configuration and Functionality
Drain
GND
VCC
N.C.
CS
ZC
FB
Package PG-DIP-7
Pin Configuration PG-DIP-7 (top view)
Function
Zero Crossing
Feedback
Current Sense/
650V
Not Connected
650V
Controller Supply Voltage
Controller Ground
1)
1)
CoolMOS
CoolMOS
®
®
Drain
Source
5
1.3
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.
FB (Feedback)
Normally, an external capacitor is connected to this pin
for a smooth voltage V
connected to the PWM signal generator for switch-off
determination (together with the current sensing
signal), the digital signal processing for the frequency
reduction
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.
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 V
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 V
GND (Ground)
This is the common ground of the controller.
Pin Configuration and Functionality
®.
Pin Functionality
with
decreasing
VCCoff
and V
FB
. Internally, this pin is
VCCOVP
load
CoolSET
ICE2QR1065Z
®
)
.
during
April 25, 2011
®
normal
- Q1
cs