ICE3RBR1765JG [INFINEON]
ICE3RBR1765JG（ICE3RBRxx65JG 系列）是采用 DSO-16/12 封装的 ICE3RBRxx65Jx 的新成员。出色的性能包括 BICMOS 技术，有源突发模式，内置频率抖动，软栅极驱动，传播延迟补偿，内置软启动时间，内置消隐时间和可延长消隐时间，用于过载保护，外部自动重启启用功能等。 CoolSET™ 650 V 带有内置启动单元，雪崩能力强;
| 型号： | ICE3RBR1765JG |
| 厂家： | 
Infineon |
| 描述： | ICE3RBR1765JG（ICE3RBRxx65JG 系列）是采用 DSO-16/12 封装的 ICE3RBRxx65Jx 的新成员。出色的性能包括 BICMOS 技术，有源突发模式，内置频率抖动，软栅极驱动，传播延迟补偿，内置软启动时间，内置消隐时间和可延长消隐时间，用于过载保护，外部自动重启启用功能等。 CoolSET™ 650 V 带有内置启动单元，雪崩能力强 栅极驱动 信息通信管理 软启动 过载保护 |
| 文件： | 总32页 (文件大小：1442K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
ICE3RBR1765JG
Fixed-Frequency, 650V CoolSET™ in DS0-12 Package
Product Highlights
Active Burst Mode to reach the lowest Standby Power <50 mW
Auto Restart protection for over load, over temperature and over voltage
External auto-restart enable function
PG-DSO-12
Built-in soft start and blanking window
Extendable blanking Window for high load jumps
Built-in frequency jitter and soft driving for low EMI
Green Mold Compound
Pb-free lead plating; RoHS compliant
Features
Applications
650 V avalanche rugged CoolMOS™ with built-in Startup Cell
Adapter/Charger, Blue Ray/DVD player, Set-top Box, Digital
Photo Frame
Active Burst Mode for lowest Standby Power
Fast load jump response in Active Burst Mode
65 kHz internally fixed switching frequency
Auto Restart Protection for Over load, Open Loop, VCC Under
voltage & Over voltage and Over temperature
Built-in Soft Start
Auxiliary power supply of Server, PC, Printer, TV, Home
theater/Audio System, White Goods, etc
Description
ICE3RBR1765JG (ICE3RBRxx65JG series) is the new member of
ICE3RBRxx65Jx in DSO-12 package. The outstanding performance
includes BiCMOS technology, active burst mode, built-in
frequency jitter, soft gate driving, propagation delay
compensation, built-in soft start time, built-in blanking time and
extendable blanking time for over load protection, external auto-
restart enable feature, etc.
Built-in blanking window with extendable blanking time for
short duration high current
External auto-restart enable pin
Maximum Duty Cycle 75%
Overall tolerance of Current Limiting < ±5%
Internal PWM Leading Edge Blanking
BiCMOS technology for low power consumption and wide VCC
voltage range
Built-in Frequency jitter and Soft gate drive for low EMI
Typical Application
+
Converter
Snubber
CBulk
DC Output
85 ... 270 VAC
-
CVCC
VCC
Drain
Startup Cell
Power Management
PWM Controller
Current Mode
CS
Precise Low Tolerance Peak
Current Limitation
CoolMOS®
RSense
FB
Active Burst Mode
Control
Unit
GND
BA
Auto Restart Mode
CoolSET®-F3R
(Jitter Mode)
Figure 1
Typical application
1
2
Type
Package
Marking
VDS
FOSC
RDSon
1.70 Ω
230VAC ±15%2
85-265 VAC
ICE3RBR1765JG
PG-DSO-12
3RBR1765JG
650 V
65 kHz
41.51 W
27.5 W
1
typ at T=25°C
2
Calculated maximum input power rating at Ta=50°C, Tj=125°C and without copper area as heat sink.
Data Sheet
www.infineon.com
Please read the Important Notice and Warnings at the end of this document
Revision 1.1
2017-06-13
Fixed-Frequency, 650V CoolSET™ in DS0-12 Package
Pin Configuration and Functionality
Table of Contents
1
2
Pin Configuration and Functionality ................................................................................ 3
Representative Block Diagram ........................................................................................ 4
3
3.1
3.2
3.3
3.3.1
3.3.2
3.4
Functional Description ................................................................................................... 5
Introduction.............................................................................................................................................5
Power Management ................................................................................................................................6
Improved Current Mode..........................................................................................................................7
PWM-OP..............................................................................................................................................8
PWM-Comparator...............................................................................................................................8
Startup Phase ..........................................................................................................................................9
PWM Section..........................................................................................................................................11
Oscillator ..........................................................................................................................................11
PWM-Latch FF1.................................................................................................................................12
Gate Driver........................................................................................................................................12
Current Limiting ....................................................................................................................................13
Leading Edge Blanking.....................................................................................................................13
Propagation Delay Compensation (patented)................................................................................14
Control Unit ...........................................................................................................................................15
Basic and Extendable Blanking Mode .............................................................................................15
Active Burst Mode (patented)..........................................................................................................16
Entering Active Burst Mode ........................................................................................................16
Working in Active Burst Mode.....................................................................................................16
Leaving Active Burst Mode..........................................................................................................17
Protection Modes .............................................................................................................................17
Auto Restart mode with extended blanking time......................................................................18
Auto Restart mode without extended blanking time ................................................................19
3.5
3.5.1
3.5.2
3.5.3
3.6
3.6.1
3.6.2
3.7
3.7.1
3.7.2
3.7.2.1
3.7.2.2
3.7.2.3
3.7.3
3.7.3.1
3.7.3.2
4
4.1
4.2
4.3
4.3.1
4.3.2
4.3.3
4.3.4
4.3.5
4.3.6
4.3.7
Electrical Characteristics...............................................................................................20
Absolute Maximum Ratings ..................................................................................................................20
Absolute Maximum Ratings ..................................................................................................................21
Characteristics.......................................................................................................................................21
Supply Section .................................................................................................................................21
Internal Voltage Reference ..............................................................................................................22
PWM Section.....................................................................................................................................22
Soft Start time ..................................................................................................................................22
Control Unit......................................................................................................................................23
Current Limiting ...............................................................................................................................24
CoolMOS™ Section ...........................................................................................................................24
5
6
7
8
9
CoolMOS™ Performance Characteristics..........................................................................25
Input Power Curve ........................................................................................................27
Outline Dimension ........................................................................................................28
Marking .......................................................................................................................29
Schematic for recommended PCB layout.........................................................................30
Revision History ............................................................................................................................31
Data Sheet
2
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Fixed-Frequency, 650V CoolSET™ in DS0-12 Package
Pin Configuration and Functionality
1
Pin Configuration and Functionality
Table 1
Pin
Pin definitions and functions
Symbol
Function
Not Connected
1, 9, 10
2
N.C
BA
BA (extended Blanking & Auto-restart enable)
The BA pin combines the functions of extendable blanking time for over load protection and
the external auto-restart enable. The extendable blanking time function is to extend the
built-in 20 ms blanking time by adding an external capacitor at BA pin to ground. The
external auto-restart enable function is an external access to stop the gate switching and
force the IC enter auto-restart mode. It is triggered by pulling down the BA pin to less than
0.33 V.
FB (Feedback)
3
4
FB
CS
The information about the regulation is provided by the FB Pin to the internal
Protection Unit and to the internal PWM-Comparator to control the duty cycle. The FB-
Signal is the only control signal in case of light load at the Active Burst Mode.
CS (Current Sense)
The Current Sense pin senses the voltage developed on the series resistor inserted in the
source of the integrated CoolMOSTM If voltage in CS pin reaches the internal threshold of the
Current Limit Comparator, the Driver output is immediately switched off. Furthermore the
current information is provided for the PWM-Comparator to realize the Current Mode.
Drain (Drain of 650 V 1 integrated CoolMOS™)
Drain pins are connected to the Drain of integrated CoolMOS™.
VCC (Power supply)
5, 6, 7, 8
11
Drain
VCC
VCC pin is the positive supply of the IC. The operating range is between VVCCoff and VVCCOVP
.
12
GND
GND (Ground)
This is the common ground of the controller.
1
2
3
12
11
10
N.C
BA
FB
GND
VCC
N.C
N.C.
CS
4
9
5
6
8
7
Drain
Drain
Drain
Drain
Figure 2
Pin configuration PG-DSO-12(top view)
1at Tj=110°C
Data Sheet
3
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Fixed-Frequency, 650V CoolSET™ in DS0-12 Package
Representative Block Diagram
2
Representative Block Diagram
Figure 3
Representative Block Diagram
Data Sheet
4
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Fixed-Frequency, 650V CoolSET™ in DS0-12 Package
Functional Description
3
Functional Description
All values which are used in the functional description are typical values. For calculating the worst cases the
min/max values which can be found in section 4 Electrical Characteristics have to be considered.
3.1
Introduction
ICE3RBR1765JG (ICE3RBRxx65JG series) is the new member of ICE3RBRxx65Jx in DSO-12 package. A high
voltage Startup Cell is integrated into the IC which is switched off once the Undervoltage Lockout on-threshold
of 18 V is exceeded. This Startup Cell is part of the integrated CoolMOSTM. The external startup resistor is no
longer necessary as this Startup Cell is connected to the Drain. Power losses are therefore reduced. This
increases the efficiency under light load conditions drastically.
The particular features are the active burst mode, propagation delay compensation, modulated gate driving,
auto-restart protection for Vcc overvoltage, over temperature, over load, open loop, built-in soft start, blanking
window and frequency jitter. It provides the flexibility to increase the blanking window by simply addition of a
capacitor in BA pin. In order to further increase the flexibility of the protection feature, an external auto-restart
enable feature is added.
The intelligent Active Burst Mode can effectively obtain the lowest Standby Power at light load and no load
conditions. After entering the burst mode, there is still a full control of the power conversion to the output
through the optocoupler, that is used for the normal PWM control. The response on load jumps is optimized
and the voltage ripple on Vout is minimized. The Vout is on well controlled in this mode.
The usually external connected RC-filter in the feedback line after the optocoupler is integrated in the IC to
reduce the external part count.
Adopting the BiCMOS technology, it can increase the design flexibility as the Vcc voltage range is increased to
25 V.
It has a built-in 20 ms soft start function.
There are 2 modes of blanking time for high load jumps; the basic mode and the extendable mode. The
blanking time for the basic mode is set at 20 ms while the extendable mode will increase the blanking time by
adding an external capacitor at the BA pin in addition to the basic mode blanking time. During this blanking
time window the system can give the maximum power to the loading.
In order to increase the robustness and safety of the system, the IC provides Auto Restart protection. The Auto
Restart Mode reduces the average power conversion to a minimum level under unsafe operating conditions.
This is necessary for a prolonged fault condition which could otherwise lead to a destruction of the SMPS over
time. Once the malfunction is removed, normal operation is automatically retained after the next Start Up
Phase. To make the protection more flexible, an external auto-restart enable pin is provided. When the pin is
triggered, the switching pulse at gate will stop and the IC enters the auto-restart mode after the pre-defined
spike blanking time.
The internal precise peak current control reduces the costs for the transformer and the secondary diode. The
influence of the change in the input voltage on the maximum power limitation can be avoided together with
the integrated Propagation Delay Compensation. Therefore the maximum power is nearly independent on the
input voltage, which is required for wide range SMPS. Thus there is no need for the over-sizing of the SMPS, e.g.
the transformer and the output diode.
Furthermore, it implements the frequency jitter mode to the switching clock such that the EMI noise will be
effectively reduced.
Data Sheet
5
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2017-06-13
Fixed-Frequency, 650V CoolSET™ in DS0-12 Package
Functional Description
3.2
Power Management
Drain
VCC
Startup Cell
Depl. CoolMOS™
Power Management
Undervoltage Lockout
18V
Internal Bias
10.5V
5.0V
Voltage
Reference
Power-Down Reset
Auto Restart
Mode
Soft Start block
Active Burst Mode
Figure 4
Power Management
The Undervoltage Lockout monitors the external supply voltage VVCC. When the SMPS is plugged to the main
line the internal Startup Cell is biased and starts to charge the external capacitor CVCC which is connected to the
VCC pin. This VCC charge current is controlled to 0.9 mA by the Startup Cell. When the VVCC exceeds the on-
threshold VVCCon=18 V the bias circuit are switched on. Then the Startup Cell is switched off by the Undervoltage
Lockout and therefore no power losses present due to the connection of the Startup Cell to the Drain voltage.
To avoid uncontrolled ringing at switch-on, a hysteresis start up voltage is implemented. The switch-off of the
controller can only take place when VVCC falls below 10.5 V after normal operation was entered. The maximum
current consumption before the controller is activated is about 150 mA.
When VVCC falls below the off-threshold VVCCoff=10.5 V, the bias circuit is switched off and the soft start counter is
reset. Thus it is ensured that at every startup cycle the soft start starts at zero.
The internal bias circuit is switched off if Auto Restart Mode is entered. The current consumption is then
reduced to 150mA.
Once the malfunction condition is removed, this block will then turn back on. The recovery from Auto Restart
Mode does not require re-cycling the AC line.
When Active Burst Mode is entered, the internal Bias is switched off most of the time but the Voltage Reference
is kept alive in order to reduce the current consumption below 450 µA.
Data Sheet
6
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Fixed-Frequency, 650V CoolSET™ in DS0-12 Package
Functional Description
3.3
Improved Current Mode
Soft-Start Comparator
PWM-Latch
FB
R
Q
C8
Driver
S
Q
0.67V
PWM OP
x3.3
CS
Improved
Current Mode
Figure 5
Current Mode
Current Mode means the duty cycle is controlled by the slope of the primary current. This is done by comparing
the FB signal with the amplified current sense signal.
Amplified Current Signal
FB
0.67V
Driver
t
t
ton
Figure 6 Pulse Width Modulation
In case the amplified current sense signal exceeds the FB signal the on-time Ton of the driver is finished by
resetting the PWM-Latch (Figure 6).
The primary current is sensed by the external series resistor RSense inserted in the source of the integrated
CoolMOSTM. By means of Current Mode regulation, the secondary output voltage is insensitive to the line
variations. The current waveform slope will change with the line variation, which controls the duty cycle.
The external RSense allows an individual adjustment of the maximum source current of the integrated
CoolMOSTM.
To improve the Current Mode during light load conditions the amplified current ramp of the PWM-OP is
superimposed on a voltage ramp, which is built by the switch T2, the voltage source V1 and a resistor R1 (Figure
7). Every time the oscillator shuts down for maximum duty cycle limitation the switch T2 is closed by VOSC. When
the oscillator triggers the Gate Driver, T2 is opened so that the voltage ramp can start.
In case of light load the amplified current ramp is too small to ensure a stable regulation. In that case the
Voltage Ramp is a well defined signal for the comparison with the FB-signal. The duty cycle is then controlled
by the slope of the Voltage Ramp.
By means of the time delay circuit which is triggered by the inverted VOSC signal, the Gate Driver is switched-off
until it reaches approximately 156 ns delay time (Figure 8). It allows the duty cycle to be reduced continuously
till 0% by decreasing VFB below that threshold.
Data Sheet
7
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Fixed-Frequency, 650V CoolSET™ in DS0-12 Package
Functional Description
Soft-Start Comparator
PWM Comparator
FB
C8
PWM-Latch
Oscillator
VOSC
time delay
circuit (156ns)
Gate Driver
0.67V
10k
X3.3
R1
T2
V1
PWM OP
C1
Voltage Ramp
Figure 7
Improved Current Mode
VOSC
max.
Duty Cycle
t
Voltage Ramp
0.67V
FB
t
Gate Driver
156ns time delay
t
Figure 8
Light Load Conditions
3.3.1
PWM-OP
The input of the PWM-OP is applied over the internal leading edge blanking to the external sense resistor RSense
connected to pin CS. RSense converts the source current into a sense voltage. The sense voltage is amplified with
a gain of 3.3 by PWM OP. The output of the PWM-OP is connected to the voltage source V1. The voltage ramp
with the superimposed amplified current signal is fed into the positive inputs of the PWM-Comparator C8 and
the Soft-Start-Comparator (Figure 7).
3.3.2
PWM-Comparator
The PWM-Comparator compares the sensed current signal of the integrated CoolMOS™ with the feedback
signal VFB(Figure 9). VFB is created by an external optocoupler or external transistor in combination with the
internal pull-up resistor RFB and provides the load information of the feedback circuitry. When the amplified
current signal of the integrated CoolMOS™ exceeds the signal VFB, the PWM-Comparator switches off the Gate
Driver.
Data Sheet
8
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2017-06-13
Fixed-Frequency, 650V CoolSET™ in DS0-12 Package
Functional Description
5V
Soft-Start Comparator
RFB
FB
PWM-Latch
C8
PWM Comparator
0.67V
Optocoupler
PWM OP
CS
X3.3
Improved
Current Mode
Figure 9
PWM Controlling
3.4
Startup Phase
Soft Start counter
SoftS
Soft Start
Soft Start
Soft-Start
Comparator
Gate Driver
C7
&
G7
0.67V
CS
x3.3
PWM OP
Figure 10 Soft Start
In the Startup Phase, the IC provides a Soft Start period to control the primary current by means of a duty cycle
limitation. The Soft Start function is a built-in function and it is controlled by an internal counter.
Figure 11 Soft Start Phase
Data Sheet
9
Revision 1.1
2017-06-13
Fixed-Frequency, 650V CoolSET™ in DS0-12 Package
Functional Description
When the VVCC exceeds the on-threshold voltage, the IC starts the Soft Start mode (Figure 11).
The function is realized by an internal Soft Start resistor, a current sink and a counter. And the amplitude of the
current sink is controlled by the counter (Figure 12).
5V
RSoftS
SoftS
32I
4I
8I
2I
I
Soft Start
Counter
Figure 12 Soft Start Circuit
After the IC is switched on, the VSOFTS voltage is controlled such that the voltage is increased step-wisely (32
steps) with the increase of the counts. The Soft Start counter would send a signal to the current sink control in
every 600 µs such that the current sink decrease gradually and the duty ratio of the gate drive increases
gradually. The Soft Start will be finished in 20 ms (TSoft-Start) after the IC is switched on. At the end of the Soft Start
period, the current sink is switched off.
VSoftS
tSoft-Start
VSOFTS32
t
Gate
Driver
t
Figure 13 Gate drive signal under Soft-Start Phase
Within the soft start period, the duty cycle is increasing from zero to maximum gradually (Figure 13).
In addition to Start-Up, Soft-Start is also activated at each restart attempt during Auto Restart
Data Sheet
10
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Fixed-Frequency, 650V CoolSET™ in DS0-12 Package
Functional Description
VSoftS
TSoft-Start
VSOFTS32
VFB
t
t
t
4.0V
VOUT
VOUT
TStart-Up
Figure 14 Start Up Phase
The Start-Up time TStart-Up before the converter output voltage VOUT is settled, must be shorter than the Soft-Start
Phase TSoft-Start (Figure 14).
By means of Soft-Start there is an effective minimization of current and voltage stresses on the integrated
CoolMOS™, the clamp circuit and the output overshoot and it helps to prevent saturation of the transformer
during Start-Up.
3.5
PWM Section
0.75
PWM Section
Oscillator
Duty Cycle
max
Clock
Frequency
Jitter
Soft Start
Block
FF1
Gate Driver
&
S
Soft Start
Comparator
1
R
Q
G8
PWM
Comparator
G9
Current
Limiting
CoolMOS®
Gate
Figure 15 PWM Section Block
3.5.1
Oscillator
The oscillator generates a fixed frequency of 65 kHz with frequency jittering of ±4% (which is ±2.6 kHz) at a
jittering period of 4 ms.
A capacitor, a current source and current sink which determine the frequency are integrated. In order to
achieve a very accurate switching frequency, the charging and discharging current of the implemented
Data Sheet
11
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Fixed-Frequency, 650V CoolSET™ in DS0-12 Package
Functional Description
oscillator capacitor are internally trimmed. The ratio of controlled charge to discharge current is adjusted to
reach a maximum duty cycle limitation of Dmax=0.75.
Once the Soft Start period is over and when the IC goes into normal operating mode, the switching frequency of
the clock is varied by the control signal from the Soft Start block. Then the switching frequency is varied in
range of 65 kHz ± 2.6 kHz at period of 4 ms.
3.5.2
PWM-Latch FF1
The output of the oscillator block provides continuous pulse to the PWM-Latch which turns on/off the
integrated CoolMOS™. After the PWM-Latch is set, it is reset by the PWM comparator, the Soft Start comparator
or the Current -Limit comparator. When it is in reset mode, the output of the driver is shut down immediately.
3.5.3
Gate Driver
VCC
1
PWM-Latch
Gate
CoolMOS®
Gate Driver
Figure 16 Gate Driver
The driver-stage is optimized to minimize EMI and to provide high circuit efficiency. The switch on speed is
slowed down before it reaches the integrated CoolMOS™ turn on threshold. That is a slope control of the rising
edge at the output of the driver (Figure 17).
(internal)
VGate
ca. t = 130ns
5V
t
Figure 17 Gate Rising Slope
Data Sheet
12
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Fixed-Frequency, 650V CoolSET™ in DS0-12 Package
Functional Description
3.6
Current Limiting
PWM Latch
FF1
Current Limiting
Propagation-Delay
Compensation
Vcsth
Leading
Edge
C10
Blanking
220ns
PWM-OP
&
C12
G10
0.34V
1pF
10k
Active Burst
Mode
D1
CS
Figure 18 Current Limiting Block
There is a cycle by cycle peak current limiting operation realized by the Current-Limit comparator C10. The
source current of the integrated CoolMOS™ is sensed via an external sense resistor RSense. By means of RSense the
source current is transformed to a sense voltage VSense which is fed into the CS pin. If the voltage VSense exceeds
the internal threshold voltage Vcsth, the comparator C10 immediately turns off the gate drive by resetting the
PWM Latch FF1.
A Propagation Delay Compensation is added to support the immediate shut down of the integrated CoolMOS™
with very short propagation delay. Thus the influence of the AC input voltage on the maximum output power
can be reduced to minimal.
In order to prevent the current limit from distortions caused by leading edge spikes, a Leading Edge Blanking is
integrated in the current sense path for the comparators C10, C12 and the PWM-OP.
The output of comparator C12 is activated by the Gate G10 if Active Burst Mode is entered. When it is activated,
the current limiting is reduced to 0.34 V. This voltage level determines the maximum power level in Active Burst
Mode.
3.6.1
Leading Edge Blanking
VSense
Vcsth
tLEB = 220ns
t
Figure 19 Leading Edge Blanking
Whenever the integrated CoolMOS™ is switched on, a leading edge spike is generated due to the primary-side
capacitances and reverse recovery time of the secondary-side rectifier. This spike can cause the gate drive to
switch off unintentionally. In order to avoid a premature termination of the switching pulse, this spike is
blanked out with a time constant of tLEB = 220 ns.
Data Sheet
13
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Fixed-Frequency, 650V CoolSET™ in DS0-12 Package
Functional Description
3.6.2
Propagation Delay Compensation (patented)
In case of over-current detection, there is always propagation delay to switch off the integrated CoolMOS™. An
overshoot of the peak current Ipeak is induced to the delay, which depends on the ratio of dI/dt of the peak
current (Figure 20).
Signal2
IOvershoot2
Signal1
tPropagation Delay
ISense
Ipeak2
Ipeak1
ILimit
IOvershoot1
t
Figure 20 Current Limiting
The overshoot of Signal2 is larger than of Signal1 due to the steeper rising waveform. This change in the slope
depends on the AC input voltage. Propagation Delay Compensation is integrated to reduce the overshoot due
to dI/dt of the rising primary current. Thus the propagation delay time between exceeding the current sense
threshold Vcsth and the switching off of the integrated CoolMOS™ is compensated over temperature within a
wide range. Current Limiting is then very accurate.
For example, Ipeak = 0.5 A with RSense = 2. The current sense threshold is set to a static voltage level Vcsth=1 V
without Propagation Delay Compensation. A current ramp of dI/dt = 0.4 A/µs, or dVSense/dt = 0.8 V/µs, and a
propagation delay time of tPropagation Delay =180 ns leads to an Ipeak overshoot of 14.4%. With the propagation
delay compensation, the overshoot is only around 2% (Figure 21).
with compensation
without compensation
V
1,3
1,25
1,2
1,15
1,1
1,05
1
0,95
0,9
0
0,2
0,4
0,6
0,8
1
1,2
1,4
1,6
1,8
2
V
dVSense
dt
s
Figure 21 Overcurrent Shutdown
The Propagation Delay Compensation is realized by means of a dynamic threshold voltage Vcsth (Figure 22). In
case of a steeper slope the switch off of the driver is earlier to compensate the delay.
Data Sheet
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Fixed-Frequency, 650V CoolSET™ in DS0-12 Package
Functional Description
VOSC
max. Duty Cycle
off time
VSense
Propagation Delay
t
Vcsth
Signal1
Signal2
t
Figure 22 Dynamic Voltage Threshold Vcsth
3.7
Control Unit
The Control Unit contains the functions for Active Burst Mode and Auto Restart Mode. The Active Burst Mode
and the Auto Restart Mode both have 20 ms internal Blanking Time. For the Auto Restart Mode, a further
extendable Blanking Time is achieved by adding external capacitor at BA pin. By means of this Blanking Time,
the IC avoids entering into these two modes accidentally. Furthermore that buffer time for the overload
detection is very useful for the application that works in low current but requires a short duration of high
current occasionally.
3.7.1
Basic and Extendable Blanking Mode
5.0V
IBK
BA
Auto
Restart
Mode
C3
CBK
#
4.0V
0.9V
&
Spike
Blanking
8.0us
1
G5
S1
G2
20ms
Blanking
Time
4.0V
C4
FB
&
Active
Burst
Mode
20ms
Blanking
Time
C5
G6
1.35V
Control Unit
Figure 23 Basic and Extendable Blanking Mode
There are 2 kinds of Blanking mode; basic mode and the extendable mode. The basic mode is just an internal
set 20 ms blanking time while the extendable mode has an extra blanking time by connecting an external
capacitor to the BA pin in addition to the pre-set 20 ms blanking time. For the extendable mode, the gate G5 is
blocked even though the 20 ms blanking time is reached if an external capacitor CBK is added to BA pin. While
the 20ms blanking time is passed, the switch S1 is opened by G2. Then the 0.9 V clamped voltage at BA pin is
charged to 4.0 V through the internal IBK constant current. G5 is enabled by comparator C3. After the 30 µs spike
blanking time, the Auto Restart Mode is activated.
For example, if CBK = 0.22 µF, IBK = 13 µA
Data Sheet
15
Revision 1.1
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Fixed-Frequency, 650V CoolSET™ in DS0-12 Package
Functional Description
Blanking time = 20 ms + CBK x (4.0 - 0.9) / IBK = 72 ms
In order to make the startup properly, the maximum CBK capacitor is restricted to less than 0.65 µF.
The Active Burst Mode has basic blanking mode only while the Auto Restart Mode has both the basic and the
extendable blanking mode.
3.7.2
Active Burst Mode (patented)
The IC enters Active Burst Mode under low load conditions. With the Active Burst Mode, the efficiency increases
significantly at light load conditions while still maintaining a low ripple on VOUT and a fast response on load
jumps. During Active Burst Mode, the IC is controlled by the FB signal. Since the IC is always active, it can be a
very fast response to the quick change at the FB signal. The Start up Cell is kept OFF in order to minimize the
power loss. The Active Burst Mode is located in the Control Unit. Figure 24 shows the related components.
Internal Bias
Current
Limiting
&
G10
4.0V
C4
Active
Burst
Mode
FB
&
G6
C5
1.35V
20 ms
Blanking
Time
C6a
C6b
3.5V
3.0V
&
G11
Control Unit
Figure 24 Active Burst Mode
3.7.2.1
Entering Active Burst Mode
The FB signal is kept monitoring by the comparator C5. During normal operation, the internal blanking time
counter is reset to 0. Once the FB signal falls below 1.35 V, it starts to count. When the counter reach 20 ms and
FB signal is still below 1.35 V, the system enters the Active Burst Mode. This time window prevents a sudden
entering into the Active Burst Mode due to large load jumps.
After entering Active Burst Mode, a burst flag is set and the internal bias is switched off in order to reduce the
current consumption of the IC to approximately 450 µA.
It needs the application to enforce the VCC voltage above the Undervoltage Lockout level of 10.5 V such that
the Startup Cell will not be switched on accidentally. Or otherwise the power loss will increase drastically. The
minimum VCC level during Active Burst Mode depends on the load condition and the application. The lowest
VCC level is reached at no load condition.
3.7.2.2
Working in Active Burst Mode
After entering the Active Burst Mode, the FB voltage rises as VOUT starts to decrease, which is due to the inactive
PWM section. The comparator C6a monitors the FB signal. If the voltage level is larger than 3.5 V, the internal
circuit will be activated; the Internal Bias circuit resumes and starts to provide switching pulse. In Active Burst
Mode the gate G10 is released and the current limit is reduced to 0.34 V, which can reduce the conduction loss
and the audible noise. If the load at VOUT is still kept unchanged, the FB signal will drop to 3.0 V. At this level the
C6b deactivates the internal circuit again by switching off the internal Bias. The gate G11 is active again as the
Data Sheet
16
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Fixed-Frequency, 650V CoolSET™ in DS0-12 Package
Functional Description
burst flag is set after entering Active Burst Mode. In Active Burst Mode, the FB voltage is changing like a saw
tooth between 3.0 V and 3.5 V (Figure 25).
3.7.2.3
Leaving Active Burst Mode
The FB voltage will increase immediately if there is a high load jump. This is observed by the comparator C4.
Since the current limit is app. 34% during Active Burst Mode, it needs a certain load jump to rise the FB signal to
exceed 4.0 V. At that time the comparator C4 resets the Active Burst Mode control which in turn blocks the
comparator C12 by the gate G10. The maximum current can then be resumed to stabilize the VOUT
.
VFB
Entering
Active Burst
Mode
Leaving Active
Burst Mode
4.0V
3.5V
3.0V
1.35V
Blanking Timer
20ms Blanking Time
t
VCS
t
t
t
t
t
Current limit level during
Active Burst Mode
1.03V
0.34V
VVCC
10.5V
IVCC
2.5mA
450uA
VOUT
Figure 25 Signals in Active Burst Mode
3.7.3
Protection Modes
The IC provides Auto Restart Mode as the protection feature. Auto Restart mode can prevent the SMPS from
destructive states. The following table shows the relationship between possible system failures and the
corresponding protection modes.
Data Sheet
17
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Fixed-Frequency, 650V CoolSET™ in DS0-12 Package
Functional Description
Before entering the Auto Restart protection mode, some of the protections can have extended blanking time to
delay the protection and some needs to fast react and will go straight to the protection. Overload and open loop
protection are the one can have extended blanking time while VCC Overvoltage, Over temperature, VCC
Undervoltage, short opto-coupler and external auto restart enable will go to protection right away.
Table 2
Protection functions
Protection function Failure condition
Protection Mode
Auto Restart
VCC Overvoltage
1. VVCC > 20.5 V & FB > 4 V & during soft start period & last for 30 µs
2. VVCC > 25.5 V & last for (120+30) µs (inactivated during burst
mode)
Auto Restart
Auto Restart
Overtemperature
(controller junction)
TJ > 140 ⁰C & last of 30 µs
Overload/Open Loop VFB > 4 V & last for 20ms & VBA > 4.0 V & last for 30 µs
(extended blanking time counted from charging VBA from 0.9 V to
4.0 V )
Auto Restart
Auto Restart
VCC Undervoltage/
Short Optocoupler
Auto restart enable
VVCC < 10.5 V & last for 10 ms + 30 µs
VBA < 0.33 V & last for 30 µs
After the system enters the Auto-restart mode, the IC will be off. Since there is no more switching, the VCC
voltage will drop. When it hits the Vcc turn off threshold, the start up cell will turn on and the Vcc is charged by
the startup cell current to VCC turn on threshold. The IC is on and the startup cell will turn off. At this stage, it
will enter the startup phase (soft start) with switching cycles. After the Start Up Phase, the fault condition is
checked. If the fault condition persists, the IC will go to auto restart mode again. If, otherwise, the fault is
removed, normal operation is resumed.
3.7.3.1
Auto Restart mode with extended blanking time
5.0V
IBK
BA
Auto
Restart
C3
CBK
Mode
#
4.0V
0.9V
&
G5
Spike
1
Blanking
8.0us
S1
G2
20ms
Blanking
Time
4.0V
C4
FB
Control Unit
Figure 26 Auto Restart Mode
In case of Overload or Open Loop, the FB exceeds 4.0 V which will be observed by comparator C4. Then the
internal blanking counter starts to count. When it reaches 20 ms, the switch S1 is released. Then the clamped
voltage 0.9 V at VBA can increase. When there is no external capacitor CBK connected, the VBA will reach 4.0 V
immediately. When both the input signals at AND gate G5 is positive, the Auto Restart Mode will be activated
after the extra spike blanking time of 30 µs is elapsed. However, when an extra blanking time is needed, it can be
Data Sheet
18
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Fixed-Frequency, 650V CoolSET™ in DS0-12 Package
Functional Description
achieved by adding an external capacitor, CBK. A constant current source of IBK will start to charge the capacitor
CBK from 0.9 V to 4.0 V after the switch S1 is released. The charging time from 0.9 V to 4.0 V are the extendable
blanking time. If CBK is 0.22 µF and IBK is 13 µA, the extendable blanking time is around 52 ms and the total
blanking time is 72 ms. In combining the FB and blanking time, there is a blanking window generated which
prevents the system to enter Auto Restart Mode due to large load jumps.
3.7.3.2
Auto Restart mode without extended blanking time
1ms
counter
UVLO
Auto Restart
Mode Reset
VVCC < 10.5V
BA
Auto-restart
Enable
Signal
Stop
gate
drive
8us
Blanking
Time
C9
0.33V
Auto Restart
mode
25.5V
VCC
TAE
120us
Blanking
Time
C2
softs_period
VCC
Spike
Blanking
30us
&
C1
C4
G1
20.5V
4.0V
Voltage
Reference
FB
Thermal Shutdown
Tj >130°C
Control Unit
Figure 27 Over load, open loop protection
There are 2 modes of VCC overvoltage protection; one is during soft start and the other is at all conditions.
The first one is VVCC voltage is > 20.5 V and FB is > 4.0 V and during soft start period and the IC enters Auto Restart
Mode. The VCC voltage is observed by comparator C1 and C4. The fault conditions are to detect the abnormal
operating during start up such as open loop during light load start up, etc. The logic can eliminate the possible
of entering Auto Restart mode if there is a small voltage overshoots of VVCC during normal operating.
The 2nd one is VVCC >25.5 V and last for 120 µs and the IC enters Auto Restart Mode. This 25.5 V VCC OVP protection
is inactivated during burst mode.
The Thermal Shutdown block monitors the junction temperature of the IC. After detecting a junction
temperature higher than 130 °C, the Auto Restart Mode is entered.
In case the pre-defined auto-restart features are not sufficient, there is a customer defined external Auto-restart
Enable feature. This function can be triggered by pulling down the BA pin to < 0.33 V. It can simply add a trigger
signal to the base of the externally added transistor, TAE at the BA pin. When the function is enabled, the gate
drive switching will be stopped and then the IC will enter auto-restart mode if the signal persists. To ensure this
auto-restart function will not be mis-triggered during start up, a 1 ms delay time is implemented to blank the
unstable signal.
VCC undervoltage is the VCC voltage drop below Vcc turn off threshold. Then the IC will turn off and the start up
cell will turn on automatically. And this leads to Auto Restart Mode.
Short Optocoupler also leads to VCC undervoltage as there is no self supply after activating the internal
reference and bias.
Data Sheet
19
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Fixed-Frequency, 650V CoolSET™ in DS0-12 Package
Electrical Characteristics
4
Electrical Characteristics
Note:
All voltages are measured with respect to ground (Pin 12). The voltage levels are valid if other ratings
are not violated.
4.1
Absolute Maximum Ratings
Note:
Absolute maximum ratings are defined as ratings, which when being exceeded may lead to
destruction of the integrated circuit. For the same reason make sure, that any capacitor that will be
connected to pin 11 (VCC) is discharged before assembling the application circuit. Ta=25°C unless
otherwise specified.
Table 3
Absolute Maximum Ratings
Parameter
Symbol
Limit Values
Unit
Remarks
min.
max.
Switching drain current, pulse width
tp limited by Tj=150 °C
Pulse drain current, pulse width tp
limited by Tj=150 °C
IS
-
4.03
A
A
ID_Plus
-
6.12
Avalanche energy, repetitive tAR
limited by max. Tj=150 °C1
Avalanche current, repetitive tAR
limited by max. Tj=150 °C1
VCC Supply Voltage
EAR
IAR
-
-
0.15
1.5
mJ
A
VVCC
VFB
VBA
VCS
Tj
-0.3
-0.3
-0.3
-0.3
-40
-55
-
27
V
FB Voltage
5.5
5.5
5.5
150
150
110
V
BA Voltage
V
CS Voltage
V
Junction Temperature
Storage Temperature
°C
°C
K/W
Controller & CoolMOS™
TS
Thermal Resistance
RthJA
(Junction–Ambient)
Soldering temperature, wavesoldering Tsold
only allowed at leads
-
-
260
2
°C
kV
1.6 mm (0.063 in.) from
case for 10 s
ESD Capability (incl. Drain Pin)
VESD
Human body model2
1 Repetitive avalanche causes additional power losses that can be calculated as PAV=EAR*f
2 According to EIA/JESD22-A114-B (discharging a 100 pF capacitor through a 1.5 kW series resistor)
Data Sheet 20
Revision 1.1
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Fixed-Frequency, 650V CoolSET™ in DS0-12 Package
Electrical Characteristics
4.2
Absolute Maximum Ratings
Note:
Within the operating range the IC operates as described in the functional description.
Table 4
Absolute Maximum Ratings
Parameter
Symbol
Limit Values
Unit
Remarks
min.
VVCCoff
-40
max.
Max value limited due to Vcc
OVP
VCC Supply Voltage
VVCC
25
V
Junction Temperature of Controller
TjCon
130
°C
Max value limited due to
thermal shut down of
controller
Junction Temperature of CoolMOS™
TjCoolMOS
-40
150
°C
4.3
Characteristics
Supply Section
4.3.1
Note:
The electrical characteristics involve the spread of values within the specified supply voltage and
junction temperature range TJ from – 40 °C to 125 °C. Typical values represent the median values, which
are related to 25°C. If not otherwise stated, a supply voltage of VVCC = 18 V is assumed.
Table 5
Supply Section
Parameter
Symbol
Unit Test Condition
Limit Values
min. typ.
max.
Start Up Current
IVCCstart
-
150
250
µA
VVCC =17 V
VCC Charge Current
IVCCcharge1
-
-
5.0
1.60
-
mA
mA
mA
µA
VVCC = 0V
VVCC = 1 V
VVCC =17 V
IVCCcharge2 0.55 0.9
IVCCcharge3
IStartLeak
-
-
0.7
0.2
Leakage Current of
Start Up Cell and CoolMOS™
50
VDrain = 450 V
at Tj=100 °C
Supply Current with
Inactive Gate
IVCCsup1
-
1.5
2.5
mA
Supply Current with Active Gate
IVCCsup2
-
-
2.7
3.4
-
mA
µA
IFB = 0 A
IFB = 0 A
Supply Current in
IVCCrestart
250
Auto Restart Mode with Inactive Gate
Supply Current in Active Burst Mode
with Inactive Gate
IVCCburst1
IVCCburst2
-
-
450
450
950
950
µA
µA
VFB = 2.5 V
VVCC = 11.5 V,VFB = 2.5 V
VCC Turn-On Threshold
VCC Turn-Off Threshold
VCC Turn-On/Off Hysteresis
VVCCon
VVCCoff
VVCChys
17.0 18.0
19.0
11.2
-
V
V
V
9.8
-
10.5
7.5
Data Sheet
21
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Fixed-Frequency, 650V CoolSET™ in DS0-12 Package
Electrical Characteristics
4.3.2
Internal Voltage Reference
Table 6
Internal Voltage Reference
Parameter
Symbol
Unit Test Condition
Limit Values
min. typ.
4.90 5.00
max.
Trimmed Reference Voltage
VREF
5.10
V
measured at pin FB IFB = 0
4.3.3
PWM Section
Table 7
PWM Section
Parameter
Symbol
Unit Test Condition
Limit Values
min. typ.
54.5 65.0
59.8 65.0
max.
Fixed Oscillator Frequency
fOSC1
fOSC2
fjitter
73.5
kHz
70.2
kHz
kHz
ms
Tj = 25°C
Tj = 25°C
Tj = 25°C
Frequency Jittering Range
Frequency Jittering period
Max. Duty Cycle
-
-
±2.6
4.0
-
Tjitter
Dmax
Dmin
AV
-
0.70 0.75
0.80
Min. Duty Cycle
0
-
-
VFB < 0.3 V
PWM-OP Gain
3.1
3.3
0.67
0.5
-
3.5
-
Voltage Ramp Offset
VFB Operating Range Min Level
VFB Operating Range Max level
VOffset-
VFBmin
VFBmax
-
-
-
V
V
V
-
4.3
CS=1 V, limited by
Comparator C41
FB Pull-Up Resistor
RFB
9
15.4
23
kΩ
4.3.4
Soft Start time
Table 8
Soft Start time
Parameter
Symbol
Unit Test Condition
Limit Values
min. typ.
max.
Soft Start time
tSS
-
20
-
ms
1 The parameter is not subjected to production test - verified by design/characterization
Data Sheet 22
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Fixed-Frequency, 650V CoolSET™ in DS0-12 Package
Electrical Characteristics
4.3.5
Control Unit
Table 9
Control Unit
Parameter
Symbol
Unit Test Condition
Limit Values
min. typ.
max.
Clamped VBA voltage during Normal
Operating Mode
Blanking time voltage limit for
Comparator C3
Over Load & Open Loop Detection
Limit for Comparator C4
Active Burst Mode Level for
Comparator C5
VBAclmp 0.85 0.9
0.95
V
V
V
V
VFB = 4 V
VBKC3
VFBC4
VFBC5
3.85 4.00
3.85 4.00
1.25 1.35
4.15
4.15
1.45
Active Burst Mode Level for
Comparator C6a
Active Burst Mode Level for
Comparator C6b
Overvoltage Detection Limit for
Comparator C1
Overvoltage Detection Limit for
Comparator C2
VFBC6a
VFBC6b
3.35 3.50
2.88 3.00
3.65
3.12
21.5
26.5
0.4
V
After Active Burst Mode is
entered
After Active Burst Mode is
entered
V
VVCCOVP1 19.5 20.5
VVCCOVP2 25.0 25.5
V
VFB = 5 V
V
Auto-restart Enable level at BA pin
VAE
IBK
0.25 0.33
V
>30 ms
Charging current at BA pin
Thermal Shutdown1
9.5
13.0
16.9
µA
Charge starts after the
built-in 20 ms blanking
Controller
TjSD
tBK
130
-
140
20
150
-
°C
Built-in Blanking Time for Overload
Protection or enter Active Burst Mode
Inhibit Time for Auto-Restart enable
ms
without external capacitor
at BA pin
Count when VVCC>18 V
tIHAE
-
-
1.0
30
-
-
ms
µs
Spike Blanking Time before Auto-
Restart Protection
tSpike
Note:
The trend of all voltage levels in the Control Units is the same regarding the deviation except VVCCOVP
1 The parameter is not subjected to production test - verified by design/characterization. The thermal shutdown temperature refers to the
junction temperature of the controller.
Data Sheet
23
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Fixed-Frequency, 650V CoolSET™ in DS0-12 Package
Electrical Characteristics
4.3.6
Current Limiting
Table 10
Current Limiting
Parameter
Symbol
Unit Test Condition
Limit Values
min. typ.
0.95 1.03
max.
Peak Current Limitation
(incl. Propagation Delay)
Vcsth
1.10
V
dVsense / dt = 0.6 V/µs
(Figure 21)
Peak Current Limitation during Active VCS2
0.29 0.34
0.38
-
V
Leading Edge Blanking
CS Input Bias Current
tLEB
-
220
-0.2
ns
ICSbias
-1.6
-
µA
VCS =0 V
4.3.7
CoolMOS™ Section
Table 11
CoolMOS™ Section
Parameter
Symbol
Unit Test Condition
Limit Values
min.
V(BR)DSS 650
typ.
max.
Drain Source Breakdown Voltage
Drain Source On-Resistance
-
-
V
Tj = 110 °C,
Refer to Figure 31 for
other V(BR)DSS in different Tj
Ω
RDSon
-
-
1.70
3.57
1.96
4.12
Tj = 25 °C
Tj=125 °C1 at ID = 1.5 A
Effective output capacitance, energy Co(er)
related
-
11.63
-
pF
VDS = 0 V to 480 V1
Rise Time 2
Fall Time 2
trise
tfall
-
-
30
30
-
-
ns
ns
1 The parameter is not subjected to production test - verified by design/characterization
2 Measured in a Typical Flyback Converter Application
Data Sheet
24
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Fixed-Frequency, 650V CoolSET™ in DS0-12 Package
CoolMOS™ Performance Characteristics
5
CoolMOS™ Performance Characteristics
Figure 28 Safe Operating Area (SOA) curve for ICE3RBR1765JG
Figure 29 SOA temperature derating coefficient curve
Data Sheet
25
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Fixed-Frequency, 650V CoolSET™ in DS0-12 Package
CoolMOS™ Performance Characteristics
Figure 30 Power dissipation; Ptot=f(Ta)
Figure 31 Drain-source breakdown voltage; VBR(DSS)=f(Tj), ID=0.25mA
Data Sheet
26
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Fixed-Frequency, 650V CoolSET™ in DS0-12 Package
Input Power Curve
6
Input Power Curve
Two input power curves giving the typical input power versus ambient temperature are showed below; VIN=85
VAC~265 VAC (Figure 32) and VIN=230 VAC +/-15% (Figure 33). The curves are derived based on a typical
discontinuous mode flyback model which considers either 50% maximum duty ratio or 100 V maximum
secondary to primary reflected voltage (higher priority). The calculation is based on no copper area as heatsink
for the device. The input power already includes the power loss at input common mode choke, bridge rectifier
and the CoolMOS™.The device saturation current (ID_Puls @ Tj=125°C) is also considered.
To estimate the output power of the device, it is simply multiplying the input power at a particular operating
ambient temperature with the estimated efficiency for the application. For example, a wide range input voltage
(Figure 32), operating temperature is 50°C, estimated efficiency is 85%, then the estimated output power is 23 W
(27.5 W x 85%).
Figure 32 Input power curve VIN=85~265 VAC; Pin=f(Ta)
Figure 33 Input power curve VIN=230 VAC; Pin=f(Ta)
Data Sheet
27
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Fixed-Frequency, 650V CoolSET™ in DS0-12 Package
Outline Dimension
7
Outline Dimension
Figure 34 PG-DSO-12 (Pb-free lead plating Plastic Dual-in-Line Outline)
Data Sheet
28
Revision 1.1
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Fixed-Frequency, 650V CoolSET™ in DS0-12 Package
Marking
8
Marking
Figure 35 Marking for ICE3RBR1765JG
Data Sheet
29
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Fixed-Frequency, 650V CoolSET™ in DS0-12 Package
Schematic for recommended PCB layout
9
Schematic for recommended PCB layout
Figure 36 Schematic for recommended PCB layout
General guideline for PCB layout design using F3 CoolSET™ (Figure 36):
1. “Star Ground “at bulk capacitor ground, C11:
“Star Ground “means all primary DC grounds should be connected to the ground of bulk capacitor C11
separately in one point. It can reduce the switching noise going into the sensitive pins of the CoolSET™
device effectively. The primary DC grounds include the followings.
a. DC ground of the primary auxiliary winding in power transformer, TR1, and ground of C16 and Z11.
b. DC ground of the current sense resistor, R12
c. DC ground of the CoolSET™ device, GND pin of IC11; the signal grounds from C13, C14, C15 and collector of
IC12 should be connected to the GND pin of IC11 and then “star “connect to the bulk capacitor ground.
d. DC ground from bridge rectifier, BR1
e. DC ground from the bridging Y-capacitor, C4
2. High voltage traces clearance:
High voltage traces should keep enough spacing to the nearby traces. Otherwise, arcing would incur.
a. 400 V traces (positive rail of bulk capacitor C11) to nearby trace: > 2.0 mm
b. 600 V traces (drain voltage of CoolSET™ IC11) to nearby trace: > 2.5 mm
3. Filter capacitor close to the controller ground:
Filter capacitors, C13, C14 and C15 should be placed as close to the controller ground and the controller
pin as possible so as to reduce the switching noise coupled into the controller.
Guideline for PCB layout design when > 3 kV lightning surge test applied (Figure 36)
1. Add spark gap
Spark gap is a pair of saw-tooth like copper plate facing each other which can discharge the accumulated
charge during surge test through the sharp point of the saw-tooth plate.
Data Sheet
30
Revision 1.1
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Fixed-Frequency, 650V CoolSET™ in DS0-12 Package
Schematic for recommended PCB layout
a. Spark Gap 3 and Spark Gap 4, input common mode choke, L1:
Gap separation is around 1.5 mm (no safety concern)
b. Spark Gap 1 and Spark Gap 2, Live / Neutral to GROUND:
These 2 Spark Gaps can be used when the lightning surge requirement is > 6 kV.
230 VAC input voltage application, the gap separation is around 5.5mm
115 VAC input voltage application, the gap separation is around 3mm
2. Add Y-capacitor (C2 and C3) in the Live and Neutral to ground even though it is a 2-pin input
3. Add negative pulse clamping diode, D11 to the Current sense resistor, R12:
The negative pulse clamping diode can reduce the negative pulse going into the CS pin of the CoolSET™
and reduce the abnormal behavior of the CoolSET™. The diode can be a fast speed diode such as 1N4148.
The principle behind is to drain the high surge voltage from Live/Neutral to Ground without passing
through the sensitive components such as the primary controller, IC11.
Revision History
Major changes since the last revision
Page or Reference Description of change
1, 29
change marking
Data Sheet
31
Revision 1.1
2017-06-13
Trademarks of Infineon Technologies AG
AURIX™, C166™, CanPAK™, CIPOS™, CoolGaN™, CoolMOS™, CoolSET™, CoolSiC™, CORECONTROL™, CROSSAVE™, DAVE™, DI-POL™, DrBlade™, EasyPIM™,
EconoBRIDGE™, EconoDUAL™, EconoPACK™, EconoPIM™, EiceDRIVER™, eupec™, FCOS™, HITFET™, HybridPACK™, Infineon™, ISOFACE™, IsoPACK™,
i-Wafer™, MIPAQ™, ModSTACK™, my-d™, NovalithIC™, OmniTune™, OPTIGA™, OptiMOS™, ORIGA™, POWERCODE™, PRIMARION™, PrimePACK™,
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Edition 2017-06-13
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