INFINEON ICE1CS02G

Version 1.0, 25 July 2008
Combi PFC/ PWM Controller
ICE1CS02
ICE1CS02G
Power Management & Supply
N e v e r
s t o p
t h i n k i n g .
Combi PFC/ PWM Controller
ICE1CS02
Revision History:
2008-07-25
Datasheet
Previous Version: N.A
Page
Subjects (major changes since last revision)
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www.infineon.com
Edition 2008-07-25
Published by Infineon Technologies AG,
St.-Martin-Strasse 53,
D-81541 München
© Infineon Technologies AG 2007.
All Rights Reserved.
Attention please!
The information herein is given to describe certain components and shall not be considered as warranted characteristics.
Terms of delivery and rights to technical change reserved.
We hereby disclaim any and all warranties, including but not limited to warranties of non-infringement, regarding
circuits, descriptions and charts stated herein.
Infineon Technologies is an approved CECC manufacturer.
Information
For further information on technology, delivery terms and conditions and prices please contact your nearest Infineon Technologies Office in Germany or our Infineon Technologies Representatives worldwide (see address list).
Warnings
Due to technical requirements components may contain dangerous substances. For information on the types in
question please contact your nearest Infineon Technologies Office.
Infineon Technologies Components may only be used in life-support devices or systems with the express written
approval of Infineon Technologies, if a failure of such components can reasonably be expected to cause the failure
of that life-support device or system, or to affect the safety or effectiveness of that device or system. Life support
devices or systems are intended to be implanted in the human body, or to support and/or maintain and sustain
and/or protect human life. If they fail, it is reasonable to assume that the health of the user or other persons may
be endangered.
Combi PFC/ PWM
Controller
ICE1CS02
Off-Line SMPS Current Mode PFC/ PWM
Combinational Controller
Product Highlights
•
•
•
•
•
•
Internal Synchronization
External Synchronization
Pre-short Protection
AC brownout feature
Pb-free lead plating, RoHS compilant
Enhanced Dynamic Response
Features
• Fast, soft switching totem pole gate
drive (2 A)
• Tolerance of Trimmed Reference
Voltage ±2.5% (±2% at 25°C)
• BiCMOS technology provides wide
VCC Range
PFC Section
• 65 kHz fixed switching frequency
synchronized with PWM switching
frequency
• Ease of Use with Few External
Components
• Supports Wide Range
• Average Current Control
• External Current and Voltage Loop
Compensation for Greater User
Flexibility
• Max Duty Cycle of 95% (typ)
• Fulfills Class D Requirements of IEC
1000-3-2
• Enhanced Dynamic Response
• Unique Soft-Start to Limit Start Up
Current
• Over-Voltage Protection
PG-DIP-16-4
DSO-16-6
DSO-16-9
PG-DSO-16-17
• Max Duty Cycle 47% or 60%
• Overall Tolerance of Current Limiting <
±5%
• Internal Leading Edge Blanking
• Extended Hold-up Time with PWM input
voltage protection
• Slope Compensation
PWM Section
• 130 kHz fixed Switching Frequency
synchronizable externally
• Built in Soft Start
• Minimum of external Components
required
Version 1.0
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Combi PFC/ PWM Controller
ICE1CS02
Table of Contents
Page
1
Pin Configuration and Functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
1.1
Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
1.2
Pin Functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
2
Representative Blockdiagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8
3
3.1
3.2
3.3
3.4
3.4.1
3.4.2
3.4.3
3.4.4
3.4.5
3.4.6
3.4.7
3.4.8
3.4.9
3.4.10
3.4.11
3.4.12
3.4.13
3.4.14
3.4.15
3.4.16
3.5
3.5.1
3.5.2
3.5.3
3.5.4
3.5.5
3.5.6
3.5.7
3.5.8
3.5.9
3.5.10
3.5.11
3.5.12
3.5.13
3.5.14
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Power Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
Internal Synchronization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
PFC Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Power Supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Start-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
System Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
Brown-Out Protection (BOP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Peak Current Limit (PCL) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11
Open Loop Protection / Input Under Voltage Protect (OLP) . . . . . . . . . .12
Over-Voltage Protection (OVP) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Complete Current Loop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Current Loop Compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Pulse Width Modulation (PWM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
Nonlinear Gain Block . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
PWM Logic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Voltage Loop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Voltage Loop Compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
Enhanced Dynamic Response . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Output Gate Driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
PWM Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
Startup Phase . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
PWM Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
Oscillator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
PWM-Latch FF1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
PWM Brown out . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Output Gate Driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Current Limiting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
Leading Edge Blanking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Pre-short Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
External Synchronization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Max Duty Cycle Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
PWM Slope Compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
PWM External Shut down by Pre-Short . . . . . . . . . . . . . . . . . . . . . . . . . .18
PWM External Voltage Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
4
Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Version 1.0
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Combi PFC/ PWM Controller
ICE1CS02
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
4.3.8
4.3.9
4.3.10
4.3.11
4.3.12
Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .19
Operating Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Supply Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20
Internal Voltage Reference . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
PWM Control Loop Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .21
PWM Brown Out Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
PWM Current Limiting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
PWM Slope Compensation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
PWM Timing Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .22
PFC Timing Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
PFC Current Loop Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
PFC Voltage Loop Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .23
System Protection Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .24
Driver Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
5
Outline Dimension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .26
Version 1.0,
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25 July 2008
Combi PFC/ PWM Controller
ICE1CS02
Pin Configuration and Functionality
1
Pin Configuration and Functionality
1.1
Pin Configuration
Pin Symbol
1
PFC ICOMP
2
1.2
Pin Functionality
PFC ICOMP (Current Loop Compensation)
Low pass filter and compensation of the current control
loop. The capacitor which is connected at this pin
integrates the output current of OTA2 and averages the
current sense signal.
Function
Current Loop Compensation
PFC VSENSE VBUS Sense Input
3
PFC OVP
4
PFC VCOMP
5
GND
6
PFC OUT
7
VCC
8
PWM OUT
9
PWM CS
10
PWM SYNC/
Duty Cycle
11
PFC VSENSE (Voltage Sense/Feedback)
The output bus voltage is sensed at this pin via a
resistive divider. The reference voltage for this pin is
3V.
VBUS Overvoltage Sense
Input
Voltage Loop Compensation
Controller Ground
PFC OVP (Overvoltage Sense Input)
The output bus overvoltage is sensed at this pin via a
resistive divider. The reference voltage for this pin is
3V.
GATE OUT
Controller Supply Voltage
GATE OUT
Current Sense
PFC VCOMP (Voltage Loop Compensation)
This pin provides the compensation of the output
voltage loop with a compensation network to ground
(see Figure 2). This also gives the soft start function
which controls an increasing AC input current during
start-up.
Dual function pin: SYNC and
Duty Cycle Setting
PWM Preshort Adjustable Blanking Time
Input
12
PWM FB
13
VREF
14
VINS HYS
Input Voltage Hystersis
15
VINS
Input Voltage Brown out
16
PFC ISENSE
Figure 1
Feedback
5V reference voltage
GND (Ground)
The GND pin is the ground of the controller.
PFC OUT (PFC Gate Output)
This pin is the output of the internal driver stage, which
has a capability of 1.5A source and 2.0A sink current.
Its gate drive voltage is clamped at 15V (typically).
Current Sense Input
Pin Configuration(top view)
Package :PG -D IP-16-4 /PG -D SO -16-17
PFC
ICOMP
1
16
PFC
ISENSE
PFC
VSENSE
2
15
VINS
PFC OVP
3
14
VINS_HYS
PFC
VCOMP
4
13
VREF
GND
5
12
PWM FB
PFC OUT
6
11
PWM PreShort
VCC
7
10
PWM SYNC
PWM OUT
8
9
Version 1.0
VCC (Power Supply)
The VCC pin is the positive supply of the IC and should
be connected to an external auxiliary supply. The
operating range is between 11V and 26V. The turn-on
threshold is at 12V and under voltage occurs at 11V.
There is no internal clamp for a limitation of the power
supply.
PWM OUT (PWM Gate Output)
This pin is the output of the internal driver stage, which
has a capability of 1.5A source and 2.0A sink current.
Its gate drive voltage is clamped at 15V (typically).
PWM CS
6
25 July 2008
Combi PFC/ PWM Controller
ICE1CS02
Pin Configuration and Functionality
immediately switched off. Furthermore the current
information is used for Current Mode control. Slope
compensation is activated when Vsync is less than
3.0V.
PFC ISENSE (Current Sense Input)
The ISENSE Pin senses the voltage drop at the
external sense resistor (R1). This is the input signal for
the average current regulation in the current loop. It is
also fed to the peak current limitation block.
VINS (Input Voltage Sensing)
The VINS pin can sense the rectified AC main line
signal. When the signal drops below the voltage set
externally, the gate signal will stop and it would resume
with soft-start when the signal exceeds the voltage
externally set.
VINS HYS (Input Voltage Sensing hystersis)
This pin is the output of a comparator. Putting a resistor
between VINS and VINS HYS will set the hystersis of
PFC Brown Out protection.
VREF (Reference Voltage)
This pin is the output of buffer, which has a capability of
supplying 5V with a 12mA sourcing current (minimum).
When the output is pulled to low, the PWM portion will
stop switching and when the output is released, the
PWM will resume switching with soft-start.
PWM FB (PWM Feedback)
The IC will obtain the output information through his
pin. The internal Protection Unit and the internal PWMComparator will then control the duty cycle.
PWM Pre-short
This pin set the blanking time the IC will enter into
Output Pre-short protection mode by connecting a
capacitor.
PWM SYNC (External Sychronization) and Duty
Cycle (Duty Cycle Selection)
This pin allows 2 functions: 1)synchronization of
external oscillator with internal PWM clock and 2) Duty
Cycle selection. The frequency range is from 70kHz to
150kHz while PFC frequency range is from 35kHz to
75kHz respectively and the duty cycle is set according
to resistor tied to the pin, setting the max duty cycle to
either to 47% or 60%. If Vsense is greater than 2.6V
(Vout is greater than 330V), the max duty cycle will still
be set back to 47%.
PWM CS (Current Sense)
The Current Sense pin senses the voltage developed
on the series resistor inserted in the source of the MOS
switch. If CS reaches the internal threshold of the
Current Limit Comparator, the Driver output is
Version 1.0
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25 July 2008
Combi PFC/ PWM Controller
ICE1CS02
Representative Blockdiagram
2
Representative Blockdiagram
Vref
VCC
5V
GND
VREF
Power Management
Internal Bias
Voltage
Reference
10k
Undervoltage Lockout
47% or 60%
12V
11V
PWM
Section
Oscillator
PWM
SYNC
/ Duty
Cycle
Duty Cycle
max
&
G10
Soft-Start
Comparator
reset
Soft-start 12ms
Clock
C7
Gate Driver
FF1
S
R Q
VREF
1
G8
25kΩ
PWM
FB
G9
&
G7
15.4k
PWM_OUT
&
C8
PWM
Comparator
Internal preshort
function
2pF
Iramp_max = 150µA
Iramp
47% = OFF
60% = ON
Current Limiting
UVLO
&
G5
PWM
brownout
0.6V
0.4V
30uA
PWM OP
S
C13
30us
C9
&
G6
R
Q
S
Q
R
leb
C6
Peak Current Limit
S
R
1
G3
Toff min
OSC CLK
400ns
7.5% D
Ramp
Generator
BUF1
C1
disch_ramp
Protection Block
1
G2
UVLO
1
G1
protect
C3
PWM
Comparator
Current Sense
Opamp
PFC
ISENSE
PFC_OUT
Gate Driver
Sychronized Oscillator
fpfc:fpwm =1:2
PFC
brownout
with
softstart
PFC
VSENSE
0.6V
open-loop detect
2.6V
PFC
OVP
C4
1.43x
OP1
PFC
brownout
36k
3.15V
30us
disch_ramp
C15
Current Loop 7k
Compensation
3.0V
+/-30uA, 42uS
Nonlinear
Gain
Nonlinear
TF
OTA2
+/50uA
1.0mS
C14
S
R
Current Loop
PFC
ICOMP
2.85V
1
G4
S
R
1.0V
Over-current
Comparator
±100uA
C12
PWM
Logic
C2
VINS
HYS
S
Blanking time
Brown-Out
Detection
1.95V
C11
Q
ICE1CS02 - PFC Portion
1.25V
PWM
CS
50us
R
ICE1CS02 - PWM Portion
VINS
D1
PWM
brownout
with
softstart
1.0V
0.9V
30us
1pF
30kΩ
PWM
Preshort
C5
10kΩ
Leading
Edge
Blanking
220ns
x3.2
0.4V
3.80V
Vsync
1V
C10
M2
OTA1
M
2.85V
M1
400
3V
Voltage Loop
3.15V
PFC
VCOMP
BUF
+ve
Vin
0
Fault
4V
-ve
Window Detect
Figure 2
Version 1.0
Representative Blockdiagram
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25 July 2008
Combi PFC/ PWM Controller
ICE1CS02
Functional Description
3
Functional Description
The Undervoltage Lockout monitors the external
supply voltage VVCC. When the VVCC exceeds the onthreshold VCCon=12V, the internal bias circuit is
switched on. A hysteresis sequence is implemented to
avoid the uncontrolled rings during switch-on. The
switch-off of the controller will take place when VVCC
falls below 11V. The maximum current consumption
before the controller is activated is around 1.3mA.
When VVCC falls below the off-threshold; VCCoff=11.0V,
the internal bias circuit is switched off .
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
The ICE1CS02 comprises the complete control for
power factor controlled switched mode power supplies. With its PFC and PWM section being internally
synchronized, applies for off-line converters with input
voltages ranging from 90 V to 270 V.
The topology of the PFC preconverter is boost.
The minimal line current gaps for the maximum duty
cycle of the PFC is about 95%. The selectable maximum duty of the PWM, however, is limited to 47% or
60% to prevent transformer saturation.
The external RC-filter in the feedback line after the
optocoupler is integrated into the IC in order to reduce
the external component count.
The Soft-Start function is integrated into the IC.
An internal precise peak current control is integrated
into the IC. With this function, the costs of the power
transformer and the secondary rectifier diode can be
reduced and the max power can also be limited. The
maximum power is almost independent from the input
voltage. Hence, it can avoid to over-size the critical
components of the SMPS such as the power
transformer or the secondary rectifier diode.
3.2
3.3
Internal Synchronization
CLK OUT
PFC OUT
PWM OUT
Figure 4
Internal Synchronisation between PFC
and PWM Out
The clock rising edge will trigger a turn-off of PFC OUT
and falling edge will trigger a turn-on of PWM OUT.
Power Management
VCC
Power Management
Internal Bias
Undervoltage Lockout
12V
11V
Power-Down
Reset
Voltage
Reference
5V
Soft start
Figure 3
Version 1.0
Power Management
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25 July 2008
Combi PFC/ PWM Controller
ICE1CS02
Functional Description
3.4
PFC Section
ground via switch S1 during UVLO and other fault
conditions (see later section on “System Protection”).
During power up when VOUT is less than 83% of the
rated level, it sources a constant 30µA into the
compensation network at VCOMP pin, causing the
voltage at this pin to rise linearly. This results in a
controlled linear increase of the input current from 0A
thus reducing the stress on the external component.
When VOUT is within 83% and 95% of the rated value,
VCOMP voltage is level-shifted by the Enhance
Dynamic Response function, to ensure there is no long
period of low or no current.
When VOUT approaches its rated value, OTA1’s
sourcing current drops and so does the level shift of the
window detect block. The normal voltage loop then
takes control.
The IC operates with a cascaded control; the inner
current loop and the outer voltage loop. The inner
current loop of the IC controls the sinusoidal profile for
the average input current. It uses the dependency of
the PWM duty cycle on the line input voltage to
determine the corresponding input current. This means
the average input current follows the input voltage as
long as the device operates in CCM. Under light load
condition, depending on the choke inductance, the
system may enter into discontinuous conduction mode
(DCM). In DCM, the average current waveform will be
distorted but the resultant harmonics are still low
enough to meet the Class D requirement of IEC 10003-2.
The outer voltage loop controls the output bus voltage.
Depending on the load condition, OTA1 establishes an
appropriate voltage at VCOMP pin which controls the
amplitude of the average input current.
The IC is equipped with various protection features to
ensure safe operating condition for both the system
and device. Important protection features are namely
Brown-out protection, Current Limitation and Output
Under-voltage Protection.
VSENSE
O TA1
3.4.1
Power Supply
An internal under voltage lockout (UVLO) block
monitors the VCC power supply. As soon as it exceeds
12V and the voltage at pin 2 (PFC VSENSE) is >0.6V,
the IC begins operating its gate drive and performs its
Startup as shown in Figure 5.
.
VVSENSE > 0.6 V
VVSENSE < 0.6 V
R4
x V OUT )
R3 + R4
(
VCOMP
S1
3V
p ro te c t
R6
C4
Figure 6
VVSENSE > 0.6 V
C5
Start-up
3.4.3
System Protection
The IC provides several protection features in order to
ensure the PFC system in safe operating range.
Depending on the input line voltage (VIN) and output
bus voltage (VOUT), Figure 7 and 8 show the conditions
when these protections are active.
VCC
12 V
11 V
t
IC's
Start Normal
Open loop/
OFF
Up Operation
Standby
State
Figure 5
Normal
Operation
OFF
State of Operation respect to VCC
If VCC drops below 11V, the IC is off. The IC will then
be consuming typically 1.3mA. The IC can be turned off
and forced into standby mode by pulling down the
voltage at pin 2 (PFC VSENSE) to lower than 0.6V.
3.4.2
Start-up
Figure 6 shows the operation of voltage loop’s OTA1
during startup. The VCOMP pin is pull internally to
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Combi PFC/ PWM Controller
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Functional Description
VCC > VCCUVLO
VCC<VCCUVLO
VIN (VAC)
D1
VINS
R2
Normal
Operation
IC’s
State
(1)
BOP
IC OFF
IVINSmax = 100µA typ @
VINS_HYS = 2.5V
C5
Turn Off
Gate
Gm = 1mA / V
C1
VINS_HYS
R1
R3
VIN Related Protection Features
VOUT
VOUT,Rated
set by pin 3
100%
Figure 9
t
PCL
OLP
OVP
PFC Brown Out Protection (BOP)
3.4.5
Peak Current Limit (PCL)
The IC is designed not to support any output power
that corresponds to a voltage lower than -0.68V at the
ISENSE pin. A further increase in the inductor current,
which results in a lower ISENSE voltage, will activate
the Peak Current Limitation (PCL) protection.
20%
Figure 8
1.25V
t
VINMIN where BOP activates depends on the output power
Figure 7
Brown-Out
Protection
Vin
VINMIN(1)
OLP
VOUT Related Protection Features
IL(max)
The following sections describe the functionality of
these protection features.
IC’s
State
3.4.4
Brown-Out Protection (BOP)
Brown-out occurs when the input voltage VIN falls below
the minimum input voltage of the design (i.e. 85V for
universal input voltage range) and the VCC has not
entered into the VCCUVLO level yet. For a system without
BOP, the boost converter will increasingly draw a
higher current from the mains at a given output power
which may exceed the maximum design values of the
input current. When the input voltage VIN fall below a
voltage with hystersis, both set externally by resistor/
capacitor/diode network as shown in Figure 9, the PFC
portion will stop switching. When the input voltage VIN
exceeds the voltage set externally. The hysteresis
prevents the system to oscillate between normal and
standby mode.
Normal
Operation
PCL
-0.68V
0
Figure 10
VISENSE
PCL Protection as function of VISENSE
Due to the internal parameter tolerance, the maximum
inductor current is
IL ( max )
0.68
= ---------R1
The IC provides a cycle by cycle peak current limitation
(PCL). It is active when the voltage at pin 16 (PFC
ISENSE) reaches -0.68V. This voltage is amplified by
OP1 by a factor of -1.43 and connected to comparator
C2 with a reference voltage of 1.0V as shown in Figure
11. The overall time delay for PCL is about 200ns ~
500ns depending on the Isense voltage level.
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Combi PFC/ PWM Controller
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Functional Description
3.4.8
Complete Current Loop
The complete system current loop is shown in Figure
13.
Current Limit
Full-wave
Rectifier
1.0V
ISENSE
C2
Turn Off
Driver
R2
1.43x
IINDUCTOR
D1
R3
Vout
C2
R7
R4
OP1
R1
R2
PFC
ISENSE
Figure 11
L1
From
Full-wave
Retifier
Peak Current Limit (PCL)
PFC
ICOMP
3.4.6
Open Loop Protection / Input Under
Voltage Protect (OLP)
Whenever VSENSE voltage falls below 0.6V, or
equivalently VOUT falls below 20% of its rated value, it
indicates an open loop condition (i.e. VSENSE pin not
connected) or an insufficient input voltage VIN for
normal operation. In this case, most of the blocks within
the IC will be shutdown. It is implemented using
comparator C3 with a threshold of 0.6V as shown in the
IC block diagram in Figure 2.
R1
GATE
Current Loop
Current Loop
Compensation
OTA2
C3
voltage
proportional to
averaged
Inductor current
Gate
Driver
PWM
Comparator
R Q
S
C1
PWM Logic
1.0mS
+/-50uA (linear range)
S2
4V
Nonlinear
Gain
Input From
Voltage Loop
Fault
Figure 12
Complete System Current Loop
It consists of the current loop block which averages the
voltage at pin 16 (PFC ISENSE), resulted from the
inductor current flowing across R1. The averaged
waveform is compared with an internal ramp in the
ramp generator and PWM block. Once the ramp
crosses the average waveform, the comparator C1
turns on the driver stage through the PWM logic block.
The Nonlinear Gain block defines the amplitude of the
inductor current. The following sections describe the
functionality of each individual blocks.
3.4.7
Over-Voltage Protection (OVP)
Whenever VOUT exceeds the value set by pin 3 (PFC
OVP), higher than 3.15V, the over-voltage protection
OVP is active as shown in Figure 8, turning off gate. In
addition, a VSENSE voltage higher than 3.15V will
immediately reduce the output duty cycle, bypassing
the normal voltage loop control. This results in a lower
input power to reduce the output voltage VOUT.
3.4.9
Current Loop Compensation
The compensation of the current loop is done at the pin
1 (PFC ICOMP). This is the OTA2 output and a
capacitor C3 has to be installed at this node to ground
(see Figure 13). Under normal mode of operation, this
pin gives a voltage which is proportional to the
averaged inductor current. This pin is internally shorted
to 4V in the event of IC shuts down when OLP and
UVLO occur.
3.4.10
Pulse Width Modulation (PWM)
The IC employs an average current control scheme in
continuous conduction mode (CCM) to achieve the
power factor correction.
Assuming the voltage loop is working and output
voltage is kept constant, the off duty cycle DOFF for a
CCM PFC system is given as
V IN
D OFF = ------------V OUT
From the above equation, DOFF is proportional to VIN.
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Functional Description
designed to support the wide input voltage range (85265VAC).
The objective of the current loop is to regulate the
average inductor current such that it is proportional to
the off duty cycle DOFF, and thus to the input voltage
VIN. Figure 14 shows the scheme to achieve the
objective.
3.4.12
PWM Logic
The PWM logic block prioritizes the control input
signals and generates the final logic signal to turn on
the driver stage. The speed of the logic gates in this
block, together with the width of the reset pulse TOFFMIN,
are designed to meet a maximum duty cycle DMAX of
95% at the GATE output under 65kHz of operation.
In case of high input currents which result in Peak
Current Limitation, the GATE will be turned off
immediately and maintained in off state for the current
PWM cycle. The signal Toffmin resets (highest priority,
overriding other input signals) both the current limit
latch and the PWM on latch as illustrated in Figure 16.
ave(IIN) at ICOMP
ramp profile
GATE
drive
t
Figure 13
Peak Current
Limit
Average Current Control in CCM
The PWM is performed by the intersection of a ramp
signal with the averaged inductor current at pin 1 (PFC
ICOMP). The PWM cycle starts with the Gate turn off
for a duration of TOFFMIN (400ns typ.) and the ramp is
kept discharged. The ramp is then allowed to rise after
TOFFMIN expires. The off time of the boost transistor
ends at the intersection of the ramp signal and the
averaged current waveform. This results in the
proportional relationship between the average current
and the off duty cycle DOFF.
Figure 15 shows the timing diagrams of TOFFMIN and the
PWM waveforms.
Current Loop
PWM on signal
Figure 15
PWM cycle
VCREF(1)
PWM on
Latch
S
L2
R
Q
PWM Logic
3.4.14
Voltage Loop Compensation
The compensation of the voltage loop is installed at the
pin 4 (PFC VCOMP) (see Figure 17). This is the output
of OTA1 and the compensation must be connected at
this pin to ground. The compensation is also
responsible for the soft start function which controls an
increasing AC input current during start-up.
ramp
released
PWM
t
VCREF is a function of VICOMP
Figure 14
HIGH =
turn GATE on
3.4.13
Voltage Loop
The voltage loop is the outer loop of the cascaded
control scheme which controls the PFC output bus
voltage VOUT. This loop is closed by the feedback
sensing voltage at VSENSE which is a resistive divider
tapping from VOUT. The pin VSENSE is the input of
OTA1 which has an internal reference of 3V. Figure 17
shows the important blocks of this voltage loop.
TOFFMIN
(1)
G1
Toffmin
400ns
400ns
VRAMP
Current
Limit Latch
Q
S
L1
R
Ramp and PWM waveforms
3.4.11
Nonlinear Gain Block
The nonlinear gain block controls the amplitude of the
regulated inductor current. The input of this block is the
voltage at pin 4 (PFC VCOMP). This block has been
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Combi PFC/ PWM Controller
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Functional Description
From
Full-wave
Retifier
L1
D1
R3
VCC
Vout
C2
R7
Gate Driver
PWM Logic
HIGH to
turn on
R4
LV
External
MOS
Z1
Gate Driver
Current Loop
+
PWM Generation
GATE
GATE
VIN
Nonlinear
Gain
Av(IIN)
OTA1
3V
t
* LV: Level Shift
VSENSE
Figure 17
Gate Driver
3.5
PWM Section
3.5.1
Startup Phase
VCOMP
R6
C4
Soft Start
C5
Soft Start counter
Figure 16
Voltage Loop
Soft start finish
3.4.15
Enhanced Dynamic Response
Due to the low frequency bandwidth of the voltage loop,
the dynamic response is slow and in the range of about
several 10ms. This may cause additional stress to the
bus capacitor and the switching transistor of the PFC in
the event of heavy load changes.
The IC provides therefore a “window detector” for the
feedback voltage VVSENSE at pin 2 (PFC VSENSE).
Whenever VVSENSE exceeds the reference value (3V)
by +5%, it will act on the nonlinear gain block which in
turn affect the gate drive duty cycle directly. This
change in duty cycle is bypassing the slow changing
VCOMP voltage, thus results in a fast dynamic
response of VOUT.
Soft Start
Soft-Start
Comparator
C7
&
Gate Driver
G8
3.4.16
Output Gate Driver
The output gate driver is a fast totem pole gate drive. It
has an in-built cross conduction currents protection and
a Zener diode Z1 (see Figure 18) to protect the external
transistor switch against undesirable over voltages.
The maximum voltage at pin 6 (PFC OUT) is typically
clamped at 15V.
The output is active HIGH and at VCC voltages below
the under voltage lockout threshold VCCUVLO, the
gate drive is internally pull low to maintain the off state.
Version 1.0
SoftS
0.6V
0.4V
x3.2
CS
PWM OP
Figure 18
Soft Start
In the Startup Phase, the IC provides a Soft Start
period to control the maximum primary current by
means of a duty cycle limitation. The Soft start function
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Functional Description
is a built-in function and it is controlled by an internal
counter.
When the Vsense exceeds the on-threshold voltage
2.85V, the IC starts the soft start mode. The function is
realized by an internal soft start resistor, an internal
current sink and a internal counter. The amplitude of
the current sink is controlled by a timer.
The VSoftS voltage is set by the current sinks, a resistor
and a counter such that the voltage will increase step
wisely with the increase of the counts. Every 0.8ms, the
soft start counter would send a signal to the current
sink control such that the current sink will decrease
gradually and thus the VFB will increase gradually. The
soft start will be finished in 12msec. At the end of the
soft start period, the current sink will be switched off.
5V
R SoftS
SoftS
Soft Start
Counter
Figure 20
3.5.2
8I
4I
2I
I
Softstart Circuit
PWM Section
Vsense
0.47
PWMSection
Oscillator
2.85V
Duty Cycle
max
Clock
VSoftS
Soft Start
Comparator
VSoftS2
VSoftS1
PWM
Comparator
FF1
1
G8
Gate Driver
S
R
Q
&
G9
Current
Limiting
Figure 19
Softstart Phase
Gate
During Soft Start phase, the voltage at pin 12 (PWM
FB) follows the soft start level with an offset, VSoftS +
Voffset.
Figure 21
PWM Section
3.5.3
Oscillator
The switching frequency is generated by an oscillator
which composes of resistor, capacitor, current source
and current sink. The charging and discharging current
for the oscillator capacitor are internally trimmed and it
can provide a very accurate switching frequency. The
ratio of the controlled charge to discharge current is
adjusted to a maximum duty cycle of Dmax=0.47 or 0.60.
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Combi PFC/ PWM Controller
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Functional Description
If Vout is 330V, the duty cycle will be set back to
0.47.The switching frequency is set to fswitch = 130kHz.
VCC
3.5.4
PWM-Latch FF1
The output of the oscillator clock will provide
continuous pulse to the PWM-Latch which would turn
on the external MOS switch. After the PWM-Latch is
set, it can be 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
down immediately.
3.5.5
* LV: Level Shift
Figure 23
3.5.7
50us
R
S
2.85V
Current Limiting
Q
Q
C12
Vcsth
C10
Leading
Edge
Blanking
220ns
PWM-OP
PWM brown out circuit
The voltage of the bus voltage is sensed through the
pin 2 (PFC VSENSE). When VSENSE drops to lower than
1.95V, the gate signal will stop. When the VSENSE rises
to higher than 2.85V, gate signal will resume again with
soft-start (see Figure 23). The blanking time of 50us is
added in order to avoid the noise interruption.
10kΩ
D1
1pF
PWM CS
3.5.6
Output Gate Driver
The output gate driver is a fast totem pole gate drive. It
has an in-built cross conduction currents protection and
a Zener diode Z1 (see Figure 23) to protect the external
transistor switch against undesirable over voltages.
The maximum voltage at pin 8 (PWM OUT) is typically
clamped at 15V.
The output is active HIGH and at VCC voltages below
the under voltage lockout threshold VCCUVLO, the
gate drive is internally pull low to maintain the off state.
Version 1.0
Gate Driver
PWM Latch
FF1
PFC
VSENSE
Figure 22
External
MOS
GATE
Blanking Time
C11
LV
Z1
PWM Brown out
1.95V
Gate Driver
PWM Logic
HIGH to
turn on
Figure 24
Current Limiting
There is a cycle by cycle peak current limiting operation
realized by the Current-Limit comparator C10. The
source current of the MOS switch is sensed via an
external sense resistor RSense. By means of RSense the
source current is transformed to a voltage Vcur_sense
which is fed into the PWM CS pin. If this voltage
exceeds the internal threshold voltage Vcsth the
comparator C10 immediately turns off the gate drive by
resetting
the
PWM
Latch
FF1.
In order to prevent the current limit from distortions
caused by leading edge spikes, a Leading Edge
Blanking is integrated into the current sense path
before connecting to the PWM-OP.
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Functional Description
3.5.8
Leading Edge Blanking
3.5.10
External Synchronization
VSense
external clock
VREF=5V
10k
Vcsth
PWM
SYNC
tLEB = 220ns
voltage at PWM SYNC
Vsync
tsyncmax
pwm_out
Rduty
Synchronization
signal input
t
Figure 25
Leading Edge Blanking
Figure 27
Whenever MOS switch is switched on, a leading edge
spike is generated due to the primary-side
capacitances and the reverse recovery time of
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.
pfc_out
External Synchronization and Max Duty
Selection
During External Synchronization, external clock is input
by the synchronization signal input. PFC output is kept
in synchronization with PWM output in 1:2 ratio. The
maximum allowable external sync pulse width off time
is 0.5µs.
3.5.11
3.5.9
Max Duty
cycle
control
resistor
Max Duty Cycle Selection
Pre-short Protection
Vsync (V)
> 3.0
< 3.0
Vsense (V)
-
> 2.6 < 2.6
Max Duty
Cycle (%)
47
1.0V
CS
GATE
Figure 28
60
Max Duty Cycle Selection Table
The maximum duty cycle is selected based on the
above setting at the PFC Vsense and PWM SYNC
pins.
3.8V
Vpreshort
PROTECT
Figure 26
47
3.5.12
PWM Slope Compensation
Pre-short Protection
Iramp
The IC will enter into protection, turning off the gate
when voltage at pin 9 (PWM CS) exceed 1.0V for a
period set externally through pin 11 (PWM Pre-short).
The IC will be resetted when IC exit out of PWM BOP.
CoolMOS
PWMout
PWM CS
Rgate
Vsync
Islope
>3.0V = OFF
<3.0V = ON
Rsl_comp
PWM CS
Rsl_comp
Rcs
variable to
change slope
for
compensation
V_Rcs
PWMout
gnd
Figure 29
PWM slope compensation
The IC will enter into slope compensation at PWM CS
pin when Vsync is less than 3.0V.
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Functional Description
3.5.13
PWM External Shut down by Pre-Short
Whenever VPreshort fall below the value set by pin 11
(PWM Pre-short) of 0.4V, the PWM output will be shut
down, as shown in Figure 30.
PWM Pre-Short
0.4V
Figure 30
C13
PWM Shut Down
PWM Shut down by Pre-Short
3.5.14
PWM External Voltage Reference
The PWM external voltage reference is generated from
an internal trimmed 5V voltage reference. The external
voltage reference can source a minimum 12mA current
at pin 13 (VREF). To protect this external voltage
reference, it is equipped with a foldback characteristic,
which will cut down the output current when VREF is
shorted to GND. When using this external voltage
reference, the total current consumption of this IC
which includes this maximum source current must not
exceed the maximum operating junction temperature
of 125°C.
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Combi PFC/ PWM Controller
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Electrical Characteristics
4
Electrical Characteristics
Note:
All voltages are measured with respect to ground (Pin 5). The voltage levels are valid if other ratings are
not violated.
4.1
Note:
Absolute Maximum Ratings
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 7
(VCC) is discharged before assembling the application circuit.
Parameter
Symbol
Limit Values
min.
max.
Unit
Remarks
VCC Supply Voltage
VVCC
-0.3
26
V
PWM FB Voltage
VFB
-0.3
5.0
V
PWM CS Voltage
VCS
-0.3
5.0
V
PWM SYNC Voltage
VSYNC
-0.3
5.0
V
PWM PRESHORT Voltage
VPRESHORT
-0.3
5.0
V
PFC VINS Voltage
VVINS
-0.3
9.5
V
PFC VINS Current
IVINS
-1.0
35.0
µA
PFC VINS_HYS Voltage
VVINS_HYS
-0.3
5.0
V
PFC ICOMP Voltage
VICOMP
-0.3
5.0
V
PFC OVP Voltage
VOVP
-0.3
5.0
V
PFC ISENSE Voltage
VISENSE
-20
5.0
V
PFC ISENSE Current
IISENSE
-1.0
1.0
mA
PFC VSENSE Voltage
VVSENSE
-0.3
5.0
V
PFC VSENSE Current
IVSENSE
-1.0
1.0
mA
PFC VCOMP Voltage
VVCOMP
-0.3
5.0
V
External Voltage
Reference
VVREF
-0.3
VVREF0A
V
GATE Voltage
VGATE
-0.3
17
V
Clamped at 15V if driven
internally.
Junction Temperature
Tj
-40
150
°C
Controller
Storage Temperature
TS
-55
150
°C
90
K/W
PG-DIP-16-4
Thermal Resistance
Junction-Ambient
RthJA
3)
2)
R3>400kΩ
Thermal Resistance
Junction-Ambient
RthJA
-
125
K/W
PG-DSO-16-17
ESD Capability
VESD
-
2
kV
Human body model1)
1)
According to EIA/JESD22-A114-B (discharging a 100pF capacitor through a 1.5kΩ series resistor)
2)
Absolute ISENSE current should not be exceeded
3)
Absolute VINS current should not be exceeded
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Electrical Characteristics
4.2
Note:
Operating Range
Within the operating range the IC operates as described in the functional description.
Parameter
Symbol
Limit Values
min.
max.
Unit
Remarks
VVCC max is limited by Tjcon
VCC Supply Voltage
VVCC
VVCCoff
25
V
Junction Temperature of Controller
TjCon
-25
125
°C
4.3
4.3.1
Note:
Characteristics
Supply Section
The electrical characteristics involve the spread of values guaranteed within the specified supply voltage
and junction temperature range TJ from – 25 oC to 125 oC. Typical values represent the median values,
which are related to 25°C. If not otherwise stated, a supply voltage of VCC = 18V, internal clock frequency
is assumed.
Parameter
Symbol
Limit Values
Unit
Test Condition
min.
typ.
max.
IVCCsup1
-
6
-
mA
Supply Current with Active Gate IVCCsup2
-
10
22
mA
VFB = 3.0V with VREF
supply 0mA
Gate Load = 1nF
Operating Current during
Standby
ICCStdby
-
2.0
-
mA
VVSENSE= 0V
Start Up Current
Before VCCon
ICCstart
-
1.3
-
mA
VVCC=10V
VCC Turn-On Threshold
VCC Turn-Off Threshold
VCC Turn-On/Off Hysteresis
VVCCon
VVCCoff
VVCChys
11.5
10.5
0.60
12.0
11.0
1.00
12.9
11.9
1.35
Supply Current with Inactive
Gate
Version 1.0
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ICE1CS02
Electrical Characteristics
4.3.2
Internal Voltage Reference
Parameter
Symbol
Limit Values
Unit
Test Condition
min.
typ.
max.
4.85
5.00
5.20
V
IVREF=-0mA
Output Reference Voltage
VVREF0A
Load Regulation
∆VVREF12mA
-
-
252
mV
IVREF=-12mA1)
Line Regulation
∆VVREFDVCC
-
-
50
mV
∆VCC=3V
Maximum Source Current
IVREF
12
-
-
mA
1)
max pulling current depends on max operating junction temperature
4.3.3
PWM Control Loop Section
Parameter
Symbol
PWM-OP Gain
AV
Max. Level of Voltage Ramp
VMax-Ramp
VFB Operating Range Min Level VFBmin
VFB Operating Range Max level
VFBmax
Feedback Pull-Up Resistor
RFB
1)
Limit Values
Unit
min.
typ.
max.
3.0
3.2
3.6
-
0.6
-
V
0.3
0.4
-
V
-
-
4.3
V
11.3
17.4
22.7
kΩ
Test Condition
CS=1V limited by
Comparator C101)
This parameter is not subject to production test - verified by design/characterization
4.3.4
PWM Brown Out Section
Parameter
Symbol
Limit Values
Unit
min.
typ.
max.
VPWM_BOon
1.87
1.95
2.03
V
PWM BrownOut OFF Threshold VPWM_BOoff
2.75
2.85
2.95
V
-
50
-
µs
PWM BrownOut ON Threshold
Blanking time for BrownOut
Turn_On
Version 1.0
tbkPWM_BOon
21
Test Condition
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ICE1CS02
Electrical Characteristics
4.3.5
PWM Current Limiting
Parameter
Symbol
Limit Values
Unit
min.
typ.
max.
Test Condition
Peak Current Limitation
Vcsth
0.95
1.00
1.05
V
Leading Edge Blanking
tLEB
-
220
-
ns
CS Input Bias Current
ICSbias
-1.0
-0.2
0
µA
VCS = 0V
Unit
Test Condition
µA
at fPWM=70kHz, 60%
Max Duty Cycle
Unit
Test Condition
4.3.6
PWM Slope Compensation
Parameter
Peak Current for Slope
Compenation
4.3.7
Symbol
Islope
Limit Values
min.
typ.
max.
85
150
215
PWM Timing Section
Parameter
Symbol
Limit Values
min.
typ.
max.
12
-
ms
Soft Start Timing
tSS
-
Fixed Oscillator Frequency
fdelta
110
140
kHz
70
150
kHz
Synchronizable range
Max. Duty Cycle 2
Internal Free Run
Dmax2INT
56.5
59.0
61.5
%
Vsync < 3.0V
Vsense < 2.6V
Max. Duty Cycle 1
Internal Free Run
Dmax1INT
44.5
47.0
49.5
%
Vsync < 3.0V
Vsense > 2.6V
Max. Duty Cycle 2 (70kHz)
External Synchronization
Dmax2EXT70
51.0
57.0
63.0
%
at fPWM=70kHz
Vsync < 3.0V
Vsense < 2.6V
Max. Duty Cycle 1 (70kHz)
External Synchronization
Dmax1EXT70
37.0
43.0
47.0
%
at fPWM=70kHz
Vsync < 3.0V
Vsense > 2.6V
Max. Duty Cycle 2 (150kHz)
External Synchronization
Dmax2EXT150
54.0
60.0
66.0
%
at fPWM=150kHz
Vsync < 3.0V
Vsense < 2.6V
Max. Duty Cycle 1 (150kHz)
External Synchronization
Dmax1EXT150
39.5
45.0
49.5
%
at fPWM=150kHz
Vsync < 3.0V
Vsense > 2.6V
Min. Duty Cycle
Dmin
0
-
-
%
VFB < 0.3V
Max. Allowable External Sync
Pulse Width off Time
tsyncmax
-
-
0.5
µs
Min. Allowable External Sync
Pulse Width off Time
tsyncmin
0.35
-
-
µs
Version 1.0
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25 July 2008
Combi PFC/ PWM Controller
ICE1CS02
Electrical Characteristics
4.3.8
PFC Timing Section
Parameter
Symbol
Limit Values
min.
Fixed Oscillator Frequency
fdelta
55
Max. Duty Cycle
DMAX
93
Min. Duty Cycle
DMIN
Min. Off Time
TOFFMIN
4.3.9
max.
70
kHz
99
%
0
%
VVCOMP= 0V, VVSENSE= 3V
VICOMP= 4.3V
500
ns
VVCOMP= 3V, VVSENSE= 3V
VISENSE= 0.1V
95
120
320
PFC Current Loop Section
Parameter
Symbol
OTA2 Transconductance Gain
GmOTA2
OTA2 Output Linear Range
IOTA2
ICOMP Voltage during OLP
VICOMPF
4.3.10
typ.
Unit Test Condition
Limit Values
Unit Test Condition
min.
typ.
max.
0.7
1.0
1.2
+/- 50
4.0
4.5
mS
At Temp = 25°C
µA
5.1
V
VVSENSE= 0.5V
PFC Voltage Loop Section
Parameter
Symbol
Limit Values
Unit Test Condition
min.
typ.
max.
2.92
3.00
3.08
V
OTA1 Reference Voltage
VOTA1
Trimmed Reference
measured at PFC
VSENSE
OTA1 Transconductance Gain
GmOTA1
26
40
52
µS
OTA1 Max. Source Current
Under Normal Operation
IOTA1SO
19
30
39
µA
VVSENSE= 2V
VVCOMP= 3V
OTA1 Max. Sink Current
Under Normal Operation
IOTA1SK
18
29
38
µA
VVSENSE= 4V
VVCOMP= 3V
3.10
2.76
3.18
2.85
3.27
2.94
V
V
Enhanced Dynamic Response
VSENSE High Threshold
VSENSE Low Threshold
VHi
VLo
VSENSE Input Bias Current at 3V
IVSEN3V
0
-
1.5
µA
VVSENSE= 3V
VSENSE Input Bias Current at 1V
IVSEN1V
0
-
1
µA
VVSENSE= 1V
VCOMP Voltage during OLP
VVCOMPF
0.40
0.67
1.00
V
VVSENSE= 0.5V
IVCOMP= 0.5mA
Version 1.0
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25 July 2008
Combi PFC/ PWM Controller
ICE1CS02
Electrical Characteristics
4.3.11
PFC Brown Out Section
Parameter
Symbol
Limit Values
Unit
min.
typ.
max.
PFC Brown Out Threshold
VVINS
1.18
1.25
1.32
VINS Input Bias Current at 1.25V
IVINS
-0.5
0
0.5
µA
C5 Transconductance Gain
GmC5
0.5
1.0
1.5
mS
VINS_HYS Output Sink / Source
Current
IVINS_HYS
90
-
-
µA
Blanking time for Turn_On
tPFC_BOon
-
30
-
µs
4.3.12
Test Condition
V
VVINS= 1.25V
VVINS_HYS = 2.5V
System Protection Section
Parameter
Symbol
Limit Values
Unit Test Condition
min.
typ.
max.
0.95
1.00
1.05
V
-
20
-
ms
PWM Pre-short IC Shut Down Threshold VPre_th
3.7
3.9
4.1
V
PWM Pre-short Internal Charging
Current
IPre_Charge
18
28
38
µA
VPreshort= 1V
PWM Pre-short Internal Discharging
Current
IPre_Discha
55
85
115
µA
VPreshort= 3V
PFC Open Loop Protection (OLP)
VSENSE Threshold
VOLP
0.54
0.59
0.64
V
PFC Peak Current Limitation (PCL)
ISENSE Threshold
VPCL
-0.72
-0.65
-0.58
V
PWM External Shut Down Threshold
VPre_Shd
0.3
0.4
0.5
V
PFC Output Over-Voltage Protection
(OVP)
VOVP
3.05
3.15
3.27
V
PFC Output Over-Voltage Hystersis
(OVPHYS)
VOVPHYS
-
150
-
mV
PWM Preshort CS
VCS
PWM Pre-short Timing
tPreshort
Version 1.0
with a 0.22µF capacitor
rge
24
Threshold at PWM
Preshort
25 July 2008
Combi PFC/ PWM Controller
ICE1CS02
Electrical Characteristics
4.3.13
Driver Section
Parameter
Symbol
GATE Low Voltage
VGATEL
Limit Values
min.
typ.
max.
-
-
1.2
V
VCC = 10V
IGATE = 5 mA
-
-
1.5
V
VCC = 10V
IGATE = 20 mA
-
0.4
-
V
IGATE = 0 A
1.4
V
IGATE = 20 mA
GATE High Voltage
VGATEH
Unit Test Condition
-0.2
0.2
-
V
IGATE = -20 mA
-
14.8
-
V
VCC = 25V
CL = 4.7nF
-
12.2
-
V
VCC = 15V
CL = 4.7nF
-
7.5
-
V
VCC = VVCCoff + 0.2V
CL = 4.7nF
GATE Rise Time
tr
-
60
-
ns
VGate = 20 ~ 80 %VGATEH
CL = 4.7nF
GATE Fall Time
tf
-
50
-
ns
VGate = 80 ~ 20 %VGATEH
CL = 4.7nF
GATE Current, Peak,
Rising Edge
IGATE
-
-
-1.5
A
CL = 4.7nF1)
GATE Current, Peak,
Falling Edge
IGATE
2.0
-
-
A
CL = 4.7nF1)
1)
Design characteristics (not meant for production testing)
Version 1.0
25
25 July 2008
Combi PFC/ PWM Controller
ICE1CS02
Outline Dimension
5
Outline Dimension
PG-DIP-16-4
Dimensions in mm
Figure 31 PG-DIP-16-4 Outline Dimension
PG-DSO-16-17
(Plastic Dual Small Outline Package)
Dimensions in mm
Figure 32 PG-DSO-16-17 Outline Dimension
Version 1.0
26
25 July 2008
Total Quality Management
Qualität hat für uns eine umfassende
Bedeutung. Wir wollen allen Ihren
Ansprüchen in der bestmöglichen
Weise gerecht werden. Es geht uns also
nicht nur um die Produktqualität –
unsere Anstrengungen gelten
gleichermaßen der Lieferqualität und
Logistik, dem Service und Support
sowie allen sonstigen Beratungs- und
Betreuungsleistungen.
Quality takes on an allencompassing
significance at Semiconductor Group.
For us it means living up to each and
every one of your demands in the best
possible way. So we are not only
concerned with product quality. We
direct our efforts equally at quality of
supply and logistics, service and
support, as well as all the other ways in
which we advise and attend to you.
Dazu gehört eine bestimmte
Geisteshaltung unserer Mitarbeiter.
Total Quality im Denken und Handeln
gegenüber Kollegen, Lieferanten und
Ihnen, unserem Kunden. Unsere
Leitlinie ist jede Aufgabe mit „Null
Fehlern“ zu lösen – in offener
Sichtweise auch über den eigenen
Arbeitsplatz hinaus – und uns ständig
zu verbessern.
Part of this is the very special attitude of
our staff. Total Quality in thought and
deed, towards co-workers, suppliers
and you, our customer. Our guideline is
“do everything with zero defects”, in an
open manner that is demonstrated
beyond your immediate workplace, and
to constantly improve.
Unternehmensweit orientieren wir uns
dabei auch an „top“ (Time Optimized
Processes), um Ihnen durch größere
Schnelligkeit den entscheidenden
Wettbewerbsvorsprung zu verschaffen.
Geben Sie uns die Chance, hohe
Leistung durch umfassende Qualität zu
beweisen.
Wir werden Sie überzeugen.
http://www.infineon.com
Published by Infineon Technologies AG
Throughout the corporation we also
think in terms of Time Optimized
Processes (top), greater speed on our
part to give you that decisive
competitive edge.
Give us the chance to prove the best of
performance through the best of quality
– you will be convinced.