ICE2AS01 Infineon Technologies, ICE2AS01 Datasheet - Page 12

• Manufacturer Part Number: ICE2AS01
• Description: IC OFFLINE CTRLR SMPS CM 8DIP
• Manufacturer: Infineon Technologies
• Series: CoolSET®F2r

Specifications of ICE2AS01

• Output Isolation: Isolated
• Frequency Range: 93 ~ 107kHz
• Voltage - Input: 8.5 ~ 22 V
• Operating Temperature: -40°C ~ 150°C
• Package / Case: 8-DIP (0.300", 7.62mm)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: ICE2AS01X; ICE2AS01XK; SP000013764

transistors as well as to protect them against
undesirable gate overvoltages.
Figure 17
At voltages below the undervoltage lockout threshold
V
The driver-stage is optimized to minimize EMI and to
provide high circuit efficiency. This is done by reducing
the switch on slope when reaching the external Power
Switch threshold. This is achieved by a slope control of
the rising edge at the driver’s output (see Figure 18).
Figure 18
Thus the leading switch on spike is minimized. When
the external Power Switch is switched off, the falling
shape of the driver is slowed down when reaching 2V
to prevent an overshoot below ground. Furthermore the
driver circuit is designed to eliminate cross conduction
of the output stage.
3.8
An overload, open loop and overvoltage detection is
integrated within the Protection Unit. These three
Datasheet
Preliminary Data
VCCoff
PWM-Latch
5V
V
Gate
the gate drive is active low.
Protection Unit (Auto Restart Mode)
Gate Driver
Gate Rising Slope
ca. t = 130ns
1
VCC
C
Z1
Load
= 1nF
Gate
t
12
failure modes are latched by an Error-Latch. Additional
thermal shutdown is latched by the Error-Latch. In case
of those failure modes the Error-Latch is set after a
blanking time of 5µs and the external Power Switch is
shut down. That blanking prevents the Error-Latch from
distortions caused by spikes during operation mode.
3.8.1
Figure 19
Figure 19 shows the Auto Restart Mode in case of
overload or open loop with normal load. The detection
of open loop or overload is provided by the Comparator
C3, C4 and the AND-gate G2 (see Figure20).
Driver
13.5V
SoftS
VCC
8.5V
4.8V
5.3V
FB
Overload & Open loop/normal load
5µs Blanking
Overload & Open loop with normal
load
Auto Restart Mode
Detection
Soft-Start Phase
Failure
Functional Description
T
Burst1
ICE2AS01/S01G
ICE2BS01/S01G
T
Restart
30 Jun 2006
t
t
t
t