ICE1HS01G
Half-Bridge Resonant
Controller
Never stop thinking.
Power Management & Supply
Datasheet, Version 2.0, 24 August 2009
Edition 24 August 2009
Published by
Infineon Technologies AG
81726 Munich, Germany
© 2007 Infineon Technologies AG
All Rights Reserved.
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ICE1HS01G
Revision History: 24 August 2009 Target Datasheet
Previous Version:
Page Subjects (major changes since last revision)
Type Package
ICE1HS01G PG-DSO-8
Version 2.0 3 24 August 2009
ICE1HS01G
Half-Bridge Resonant Controller
PG-DSO-8
ICE1HS01G
Product Highlights
• Minimum number of external components
• High accuracy oscillator
• Two-level over current protection
• Over load/open loop protection
• Mains undervoltage protection with adjustable
hysteresis
• Adjustable blanking time for over load protection
and restart
Features
• DSO8 package
• Maximum 600kHz switching frequency
• Adjustable minimum switching frequency with high
accuracy
• 50% duty cycle
• Mains input under votlage protection with adjustable
hysteresis
• Two levels of overcurrent protection: frequency shift
and latch off
• Open-loop/over load protection with extended
blanking time
• Built-in digital and nonlinear softstart
• Adjustable restart time during fault protection period
Applications
• LCD/PDP TV
• AC-DC adapter
• Audio SMPS
Typical Application Circuit
Cbus
TL431
RB1
RB2
RC1
CC2
ROS2
ROS1
DO1
DO2
COCf
Lf
VO
VINDC WP
WSH
WSL
FMIN
CS
FB
VINS
GND LGHGVCC
ICE1HS01/G
Auxiliary
Supply Driver
Module
CC1
RCS2
RCS1
DCS1
DCS2
CCS1
CCS2
CS
Q1
Q2
RFMIN
RINS1
RINS2
CINS
OPTO
CFB
Half-Bridge Resonant Controller
ICE1HS01G
Table of Contents Page
Version 2.0 4 24 August 2009
1 Pin Configuration and Functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
1.1 Pin configuration with PG-DSO-8 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
1.2 Pin Functionality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
2 Representative Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6
3 Functional description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .7
3.1 Oscillator and Pulse Frequency Modulation . . . . . . . . . . . . . . . . . . . . . . . . .7
3.2 IC power supply . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
3.3 Soft start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
3.4 Current sense . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9
3.5 Over current protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
3.6 Mains Input Voltage Sense . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
3.7 Over load protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10
4 Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
4.1 Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
4.2 Operating Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12
4.3 Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
4.3.1 Supply Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
4.3.2 Oscillator Section . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13
4.3.3 Input voltage sense . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
4.3.4 Current sense . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14
4.3.5 Soft start . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15
4.3.6 Feedback . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
4.3.7 Over load protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
4.3.8 Gate driver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16
5 Outline Dimension . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .17
Version 2.0 5 24 August 2009
Half-Bridge Resonant Controller
ICE1HS01G
Pin Configuration and Functionality
1 Pin Configuration and
Functionality
1.1 Pin configuration with PG-DSO-8
Figure 1 Pin configuration with PG-DSO-8
1.2 Pin Functionality
FMIN (minimum switching frequency)
An external resistor is connected between this pin and
the ground. The voltage of this pin is constant during
operation and thus the resistance determines the
current flowing out of this pin. The minimum switching
frequency is determined by this current. The maximum
switching frequency and the switching frequency
during soft start are also related to the current flowing
out of FMIN pin.
CS(current sense)
The current sense signal is fed to this pin. Inside the IC,
two comparators are provided. If the voltage on CS pin
is higher than the first threshold, IC will increase the
switching frequency to limit the maximum output power
of the converter. If the voltage on this pin exceeds the
second threshold, IC will be latched off immediately.
FB (feedback)
This pin is connected to the collector of the opto-
coupler. Internally, during normal operation, this pin is
connected to reference voltage source with a pull-up
resistor(RFB). The IC uses the voltage on this pin to
adjust the switching frequency within the range of
maximum and minimum frequency set by FMIN pin. If
FB voltage is higher than VFBH for a certain fixed
blanking time, an extended timer will be started. If over
load/open loop protection exists longer than the
extended blanking time, IC will enter auto-restart mode.
An off timer starts from the instant IC stops switching till
IC starts another soft start. This off time is determined
by the resistors and capacitor connected to VINS pin.
VINS (mains input voltage sense)
The mains input voltage is fed to this pin via a resistive
voltage divider. If the voltage on VINS pin is higher than
the threshold VINSON, IC will start to operate with
softstart when VCC increases beyond turn on
threshold. During operation, if the voltage on this pin
falls below the threshold VINSON, IC will stop switching
until the voltage on this pin increases again.
When IC goes into over load protection mode, IC will
stop switching and try to restart after a period of time.
This period can be adjusted by connectting different
capacitors between this pin and ground.
GND (ground)
IC common ground.
LG (low side gate drive)
Low side power MOSFET driver.
HG (high-side gate drive)
Up side power MOSFET driver.
VCC (IC power supply)
Supply voltage of the IC.
Pin Symbol Function
1 FMIN Minimum switching frequency
2 CS Current sense
3 FB Feedback voltage
4 VINS Input voltage sense
5 GND IC ground
6 LG Low side gate drive
7 HG High side gate drive
8 VCC IC power supply
1
2
FMIN
3
4
CS
FB
VINS
8
7
6
5GND
VCC
HG
LG
Half-Bridge Resonant Controller
ICE1HS01G
Representative Block Diagram
Version 2.0 6 24 August 2009
2 Representative Block Diagram
Figure 2 Representative Block Diagram
HG
LG
VCC
FMIN
GND
FB
CS
QFB
200ns
EnA
TOLP
20ms
I
IREF
200ns
CFB4
EnA
VFB_BH
CFB1
VFB_OLP
VFB_L
CFB5
EnA
VFB_BL
CFB2
EnA
VFB_CH
CFB3
EnA
VFB_CL
CV2
EnA
VVI_H
Ivi_hys
CV3
EnA
VVI_L
VREF
IVI_chg
CV1
EnA
VVINS 500µs
50µs
TVI_R
Gate Driver
UVLO
12V11V
Voltage
Reference
Gate Driver
CO1
VCH
CO2
VCL
IDT
CFS
clk Q
Q
D
VREF
RFB
VINS
&
GFB1
&
GFB2
&
GV3
&
GV2
Current
Limitation
5.0*Ichg_min
VREF
&
GV1
&
GLG
&
GHG
clk
Status
EnA
&
GV4
5V
1
GAR
&
GL
VCS_La CCS1
CCS2
CCS3
VCS_H
VCS_L
TCS_La
VREF
ICSC
CCS
ICSD
&
GO1
&
GO2
CCS5
EnA
VCS_CL
CCS5
EnA
VCS_CH
Soft Start
Enable
SSEnd
IREF
ISS
clk OLP
UP Reset
clk
Up/down
IOCP
IREF
1
GCS2
CF1
VFMIN
QF1
VREF
R
SFFB2
Q
S
RFFB1
Q
R
SFFB3
Q
S
R
FFB4
Q
S
R
FVI_2
Q
Q
S
R
FLatch
Q
R
S
FO1
Q
R
S
FO2
Q
R
SFO3Q
S
R
FCS_1
Q
Q
R
S
FVI_1
Q
Q
TOLP_R
&
GV5
Over Current Protection (Patent Pending)
Version 2.0 7 24 August 2009
Half-Bridge Resonant Controller
ICE1HS01G
Functional description
3 Functional description
The controller ICE1HS01G with two gate outputs is
specially designed for LLC resonant half-bridge
converters. An oscillator with accurately-programmed
frequency range is built inside the IC. The two gate
signals are obtained by passing the signal out from the
oscillator through a divide-by-two flip-flop. Therefore,
two signals are of exactly 50% duty cycle and 180o out
of phase. To guarantee the zero-voltage-switching and
safe operation in half-bridge topologies, a fixed dead
time of 380ns is inserted in each internal when one
switch is turned off and the other is turned on.
For LLC resonant half-bridge converter, the output
voltage is regulated by changing the switching
frequency. ICE1HS01G offers the designer to choose
suitable operation frequency range by programming
the oscillator with one single resistor.
In addition, ICE1HS01G offers a programmed soft-start
function to limit both the inrush current and the
overshoot in output voltage.
To protect the system during operation, mains input
under-voltage protection and over-current protection
are integrated in ICE1HS01G as well.
3.1 Oscillator and Pulse Frequency
Modulation
The oscillator is programmed with only one external
resistor RFMIN connected to FMIN pin. The trimmed
capacitor CFS is built inside the IC with high accuracy.
The simplified oscillator circuit is shown in Figure 3.
Figure 3 Simiplified oscillator circuit
The charge current Ichg is sum of four currents which
are Ichg_min, IFB, ICS and ISS.
[1]
Everytime the capacitor CFS is charged by Ichg to VCH,
the upper switch is turned off and CFS will be
discharged through Idisc. The charge time determines
the on time for gate signal. The discharge time
determines the dead time during transition from one
gate off to another gate on. The switching waveforms
of the oscillator and gate signals are shown in Figure 4.
Figure 4 Oscillator waveforms
According to Figures 3 and 4, the on time of each gate
can be obtained as
[2]
The switching frequency can be obtained as
[3]
where the dead time Td is fixed as 380ns.
3.1.1 Minimum charge current
The voltage on pin FMIN is a constant of 1.5V during
normal operation. The resistor RFMIN determines the
current(IFMIN) flowing out from FMIN pin. Around one-
tenth of IFMIN is defined as the minimum charging
current(Ichg_min), which in turn defines the minimum
switching frequency as follows.
CO2
CO1
VCH
VCL
R
S
Q
R
S
Q
FMIN CF1
Vdd
QF1
Ichg_min
CFS
Idisc
1.5V
RFMIN
QF2 QF3
Ichg
IFB
ICS
ISS
FB
CS
ICE1HS01G
Ichg Ichgmin IFB Ics Iss
+++=
VCF
Vdelay
VLG
VHG
4V
1V
5V
10V
10V
0V
0V
0V
t
t
t
t
td
Ton
3CFS
Ichg
------------=
fs
1
23CFS
Ichg
------------T
d
+
---------------------------------=
Version 2.0 8 24 August 2009
Half-Bridge Resonant Controller
ICE1HS01G
Functional description
Figure 5 FMIN versus RFMIN
3.1.2 Feedback regulation
The output information is fed into the controller through
feedback voltage. If the output power is higher, the
feedback voltage will be higher, which will cause the
switching frequency to decrease and vice versa.
The regulation of switching frequency is achieved by
changing the charging current. An accurate operational
transconductance amplifier (OTA) is used to translate
the feedback voltage VFB into current IFB. The effective
range of feedback voltage is from 0.9V to 3.9V.
Figure 6 graphs the relationship between the actual
switching frequency and feedback voltage VFB when
RFMIN=22kohm.
Figure 6 Switching frequency versus VFB
Burst mode operation is also provided by ICE1HS01G.
During LLC operation, the feedback signal VFB is
continuously monitored. When VFB drops below VFB_off
, the switching signal will be disabled after a fixed
blanking time TFB. VFB will then rise as Vout starts to
decrease due to no switching signal. Once VFB exceeds
the threshold VFB_on, the IC resumes to normal
operation.
3.1.3 Current sense current ICS
In LLC resonant topologies, it is necessary to limit the
resonant current in case of short circuit or other fault
conditions. It is achieved by adding another current Ics
to the charging current Ichg. ICS is limited to 3 times of
the minimum charge current.
3.1.4 Soft start current ISS
To limit the inrush current and output overshoot during
start up, the switching frequency shall be necessary
high at start up. The switching frequency will change
gradually toward the minimum switching frequency
until the feedback voltage comes into regulation. The
switching frequency will then go to desired value
according to load and input conditions. The soft start
current Iss also has a upper limit of around 3.4 times of
minimum charge current. Details of soft start will be
shown later.
3.1.5 Charge current Ichg
The charge current Ichg for IC oscillator capacitor CFS is
the sum of the four parts including Ichg_min, IFB, ISS and
ICS. To limit the maximum switching frequency,
maximum value of Ichg is 5 times of Ichg_min.
In summary, the maximum charge current during
normal operation is 3Ichg_min while the maximum charge
current during fault condition or softstart is around
4Ichg_min and 4.43*Ichg_min respectively. Figure 7 shows
the maximum switching frequency versus minimum
switching frequency during normal operation.
Figure 7 Fmax versus Fmin during normal
operation
0
20
40
60
80
100
120
140
160
180
200
220
240
260
280
0 5 10 15 20 25 30 35 40 45 50 55 60 6
5
R
FMIN [kohm]
Mini
m
u
m
s
wit
c
hing
f
re
q
uen
c
y
[kH
z
]
50
60
70
80
90
100
110
120
130
140
150
160
170
180
190
200
00.511.522.533.544.5
Feedback voltage Vfb [V]
Frequency [kHz]
0
50
100
150
200
250
300
350
400
450
0 25 50 75 100 125 150 175 200
FMIN [kHz]
FMAX [kHz]
Version 2.0 9 24 August 2009
Half-Bridge Resonant Controller
ICE1HS01G
Functional description
Figure 8 shows the maximum switching frequency
versus minimum switching frequency during softstart.
Figure 8 Fmax_ss versus Fmin during soft start
3.2 IC power supply
The controller ICE1HS01G is targetting at applications
with auxiliary power supply. In most cases, a front-end
PFC pre-regulator with a PFC controller is used in the
same system.
The controller ICE1HS01G starts to operate when the
supply voltage VVCC reaches the on-threshold, VVCCon
of 12V. The minimum operating voltage after turn-on,
VVCCoff, is at 11V. The maximum recommended
operating voltage VVCCmax is 18V.
3.3 Soft start
At the beginning of the startup phase, the IC provides
a soft start with duration of 32ms with 32 steps. During
this period, the switching frequency is controlled
internally by changing the current ISS.
Figure 9 illustrates the actual switching frequency vs
startup time when RFMIN=22kohm. During softstart, the
frequency starts from 250kHz, and step by step drops
to normal operation point.
Figure 9 Switching frequency during softstart
when RFMIN=22kohm
During soft start, the overload protection is disabled
although FB voltage is high.
3.4 Current sense
Current sense in LLC half bridge converters is for
protection purpose. The voltage of resonant capacitor
CS is the sum of the resonant voltage and the dc
voltage which is equal to half of the input bus voltage.
If resonant current is higher, then the voltage on CS is
higher.The current informations for both primary side
and secondary side are almost the same and can be
obtained by dividing and filtering the resonant voltage.
The circuit is shown in Figure 10.
Figure 10 Current sense circuit
3.5 Over current protection
The controller ICE1HS01G incorporates two-level over
current protection. In case of over-load condition, the
lower level OCP will be triggerred, the switching
frequency will be increased according to the duration
and power of the over load. The higher level OCP is
used to protect the converter if transformer winding is
shorted, the IC will be latched immediately.
If VCS is higher than 0.8V, IC will boost up the switching
frequency. If Vcs is lower than 0.75V, IC will resume to
normal operation gradually. If VCS is always higher than
0.8V for 1.5ms, the frequency will rise to its maximum
level. And vice versa.
To sum up, ICE1HS01G will increase the switching
frequency to limit the resonant current in case of
temporary over-load and will also decrease the
switching frequency to its normal value after over-load
condition goes away.
3.6 Mains Input Voltage Sense
The working range of mains input voltage needs to be
specified for LLC resonant converter. It is important for
the controller to have input voltage sensing function
and protection features, which lets the IC stop
switching when the input voltage falls below the
specified range and restarts when the input voltage
increases back within the range. The mains input
voltage sensing circuit is shown Figure 2. With the
0
50
100
150
200
250
300
350
400
450
500
550
0 25 50 75 100 125 150 175 200
FMIN [kHz]
FMAX_soft start [kHz]
0
50
100
150
200
250
300
0 5 10 15 20 25 30 35
Time [ms]
Frequency [kHz]
RCS2
RCS1
DCS1
DCS2
CS
Q1
Q2
WP
CCS1
VCS
VBUS
CCS2
Version 2.0 10 24 August 2009
Half-Bridge Resonant Controller
ICE1HS01G
Functional description
current source Ihys connected between VINS and
Ground, an adjustable hysteresis between the on and
off input voltage can be created as
[4]
The mains input voltage is divided by RINS1 and RINS2 as
shown in the typical application circuit. A current source
Ihys is connected from VINS pin to ground in the IC. If
the on and off threshold for mains voltage is Vmainon and
Vmainoff, the resistors can be decided as
[5]
[6]
3.7 Over load protection
In case of open control loop or output over load fault,
the FB voltage will increase to its maximum level. If FB
voltage is higher than VFBH and this condition last
longer than a fixed blanking time of TOLP (20ms), the IC
will start the extended blanking timer. The extended
blanking timer is realized by charging and discharging
the filter capacitor CFB via the pull up resistor RFB and
QFB. The circuit for extended blanking timer is shown in
Figure 11.
Figure 11 Circuit connected to FB pin
The FB voltage waveform during a OLP period is
shown in Figure 12. After FB voltage has been higher
than VFBH for the fixed blanking time t1 shown in Figure
11, IC will use internal switch QFB to discharge VFB to
VFBL. After the switch QFB is released, CFB will be
charged up by Vdd through RFB. The time needed for
CFB being charged to VFBH can be calculated as
[7]
If CFB is 10nF, the time is about 439us. After VFB
reaches VFBH, an internal counter will increase by 1 and
the capacitor is discharged to 0.5V by QFB again. The
charging and discharging process of CFB will be
repeated for NOLP_E times if the fault condition still exist.
After the last time of NOLP_E the FB voltage is pulled
down to zero, IC will stop the switch when FB voltage
rises to VFBH again. This is called over load/open loop
proteciton. During the charging and discharging period,
the IC will operate with frequency determined by Ichg_min
and ICS.
Figure 12 FB voltage waveform during over load
protection
If the converter returns to normal operation during the
extended blanking time period, FB voltage can not
reach VFBH again. Therefore, after FB voltage is
discharged to zero voltage, if it can not reach VFBH
within TOLP_R, IC will reset all the fault timer to zero and
return to normal operation.
After IC enters into OLP, both switches will be stopped.
However, the IC remains active and will try to start with
soft start after an adjustable period. This period is
realized by charging and discharging the capacitor CINS
connected to VINS pin for NOLP_R times. The time is
therefore determined by the capacitor CINS and resistor
RINS1 and RINS2. The circuit implementation of the
adjustable off time is shown in Figure 13 and Figure 14
shows the voltage waveform of VINS in this case.
As shown in Figure 14, the CINS is discharged to VINS_L
when IC enters into OLP at time t1. After that, an
internal constant current source IINST is turned on to
charge CINS. Once the voltage on VINS is charged to
VINS_H, the current source will be turned off and CINS is
discharged by another switch Q3 to VINS_L again. The
charging and discharging of CINS is thought as one
cycle. The cylce time is also influenced by the bus
VHYS RINS1 Ihys
⋅=
RINS1
Vmainon Vmainoff
–
Ihys
-------------------------------------------=
RINS2 RINS1
VINSON
Vmainoff VINSON
–
-------------------------------------------⋅=
FB
I
1.0V
IFB
Vdd
RFB
CFB1
4.5V
TOLP
24ms
CFB3
CFB2
EnA
EnA
0.5V
S
R
Q
QFB
CLK OLP
UP Reset
TOLP_R
1.2 ms
S
R
Q
CFB4
EnA
CFB5
EnA
0.8V
0.5V
S
RQGate_off
AR
Iref
S
R
Q
AR_R
ICE1HS01G
tchg
Vdd V– FBH
Vdd VFBL
–
---------------------------
ln–R
FB CFB
⋅⋅=
VFB(V)
Time
5V
4.5V
t1t2t3
0.5V
Half-Bridge Resonant Controller
ICE1HS01G
Version 2.0 11 24 August 2009
voltage. The charging time tcha and discharging time
tdisc can be respectively approximated as
[8]
[9]
In [8], Req is the equivalent resistance for parallelling of
RINS1 and RINS2.
[10]
In [9], Req2 is the equivalent resistance for parallelling of
RINS1, RINS2 and RQ3 (900ohm typically).
[11]
IC will repeat the charging and discharging process for
NOLP_R times. After that, IC will turn off the switches for
both charging and discharging. In addition, the current
source for hysteresis will be turned on and another
blanking time of TBL_VINS, the time between t2 and t3 as
shown in Fiugre 14, will be added so that VINS pin fully
recovers and represents the bus voltage information.
IC will start the soft start after the additional blanking
time in case VVINS is higher than the VVINSon.
Figure 13 Circuit connected to VINS pin
Figure 14 VINS voltage waveform during blanking
time after OLP and before IC restarts
tcha
VBUS
Req
RINS1
-------------⋅
IINST Req
⋅()VINSH
–+
VBUS
Req
RINS1
-------------⋅
IINST Req
⋅()VINSL
–+
---------------------------------------------------------------------------------------------
ln–R
eq CINS
⋅⋅=
tdisc
VBUS
Req2
RINS1
------------- V INSL
–⋅
VBUS
Req2
RINS1
-------------⋅VINSH
–
----------------------------------------------------
ln–R
eq2 CINS
⋅⋅=
Req
1
1
RINS1
------------- 1
RINS2
-------------+
----------------------------------=
Req2
1
1
RINS1
------------- 1
RINS2
------------- 1
RQ3
---------++
--------------------------------------------------=
VINS
CV1
Ihys 1.25V
CV3
CV2
EnA
EnA
0.5V
4.5V
IINST
Vdd
R
S
Q
QCLK
Counter TBL_VINS
20ms
AR_R
AR
Mains_OK
ICE1HS01G
Q3
Q1
Q2
VVINS(V)
Time
VINS_H
t1t2t3
V
INS_
L
Half-Bridge Resonant Controller
ICE1HS01G
Electrical Characteristics
Version 2.0 12 24 August 2009
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 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 8 (VCC)
is discharged before assembling the application circuit.
1) Stress beyond this limit may destroy the device. Functional operation of the device at this or any condition
beyond those indicated under 4.2 Operating Range is not implied. Exposure to absolute maximum rated
conditions for extended periods of time may affect device reliability..
2) According to EIA/JESD22-A114-B (discharging a 100pF capacitor through a 1.5kΩ series resistor)
4.2 Operating Range
Note: Within the operating range the IC operates as described in the functional description.
Parameter Symbol Limit Values Unit Remarks
min. max.
VCC Supply Voltage VVCC -0.3 20.51) V
VHG Voltage VLG -0.3 18 V
VLG Voltage VLG -0.3 18 V
CS voltage VCS -0.3 5 V
FB voltage VFB -0.3 5 V
VINS voltage VVINS -0.3 5 V
FMIN voltage VFMIN -0.3 5 V
Maximum source current on FMIN IFMIN 2.5 mA
Junction Temperature Tj-40 125 °C
Storage Temperature TS-55 150 °C
Thermal Resistance
Junction-Ambient for PG-DSO-8 RthJA(DSO)
- 185 K/W PG-DSO-8
ESD Capability VESD - 2 kV Human body model2)
Parameter Symbol Limit Values Unit Remarks
min. max.
VCC Supply Voltage VVCC 10.2 18 V
Junction Temperature TjCon -25 125 °C
Half-Bridge Resonant Controller
ICE1HS01G
Electrical Characteristics
Version 2.0 13 24 August 2009
4.3 Characteristics
4.3.1 Supply Section
Note: The electrical characteristics involve the spread of values guaranteed within the specified supply voltage
and junction temperature range TJ from – 25 oC to 125oC. Typical values represent the median values,
which are related to 25°C. If not otherwise stated, a supply voltage of VCC = 15 V is assumed.
4.3.2 Oscillator Section
Parameter Symbol Limit Values Unit Test Condition
min. typ. max.
Start up Current IVCCstart 200 350 530 µAV
VCCon-0.1V
Supply Current in operation with
inactive gate
IVCCop - 3 mA no switching;
Supply Current in normal
operation with active gate
IVCCactive - 5.8 mA Freq=50kHz
RFMIN=30kΩ
VFB=4.2V, VCS=0V
CL=2.2nF,VVCC=15V
VCC Turn-On Threshold VVCCon 11.3 12 12.7 V
VCC Hysteresis VVCChys 0.68 0.95 1.25 V
VCC Turn-Off Threshold VVCCoff -V
VCCon -
VVCChys
-V
Trimmed Reference Voltage VREF 4.90 5.0 5.10 V IFB=0
Parameter Symbol Limit Values Unit Test Condition
min. typ. max.
Minimum switching frequency FMIN 47 50 53 kHz RFMIN=30kΩ;
Maximum switching frequency
during normal operation
FMAX_N 128 kHz RFMIN=30kΩ; VFB=0.6V,
VCS=0V, after softstart
Maximum switching frequency
during protection
FMAX_P 203 kHz RFMIN=30kΩ; VFB=0.6V,
VCS=1V
Absolute Maximum switching
frequency
FMAX_abs 609 kHz RFMIN=4.8kΩ,
VFB=0.9V, VCS=1V, soft
start first cycle
Reference voltage on FMIN VOSCRef 1.44 1.5 1.56 V
Dead time Td340 380 420 ns RFMIN=30kΩ; VFB=0.6V,
VCS=0V
Oscillation duty cycle D 48 50 52 % based on calculation
Half-Bridge Resonant Controller
ICE1HS01G
Electrical Characteristics
Version 2.0 14 24 August 2009
4.3.3 Input voltage sense
4.3.4 Current sense
Parameter Symbol Limit Values Unit Test Condition
min. typ. max.
Input voltage on threshold VVINSon 1.2 1.25 1.3 V
Bias current on VINS pin Ihys 91215µA
Blankint time for leaving mains
undervoltage protection
TVINS_out 500 µs
Blanking time for entering
mains under voltage protection
TVINS_in 50 µs
Parameter Symbol Limit Values Unit Test Condition
min. typ. max.
Overcurrent protection low VCSL 0.75 0.8 0.85 V
Hysteresis voltage for
overcurrent protection low
50 mV
Overcurrent protection high VCSH 1.57 1.63 1.7 V
Blanking time for OCP latch TOCP_L _300_ns
Maximum switching frequency
during over current protection
FMAX_C 163 kHz RFMIN=30kΩ; VFB=4.2V,
VCS=1V, after soft start
and 2ms after VCS
higher than 0.8V
Counter input voltage high VCS_CH 4.5 V Not subject to test
Counter input voltage low level VCS_CL 0.5 V Not subject to test
Blanking time after each gate is
turned on
TLEB 250 ns
Half-Bridge Resonant Controller
ICE1HS01G
Electrical Characteristics
Version 2.0 15 24 August 2009
4.3.5 Soft start
4.3.6 Feedback
Note: The trend of all the voltage levels in the Control Unit is the same regarding the deviation except VVCCOVP
Parameter Symbol Limit Values Unit Test Condition
min. typ. max.
Soft start timer TSS - 1 - ms Test as a 32ms
softstart time
Soft start steps NSS 32
Ratio of ISS over Ichgmin - 3.43 - Not subject to test
Soft start frequency Fss_step 184 kHz RFMIN=30kΩ;
Td=380ns; first cycle
softstart
Parameter Symbol Limit Values Unit Test Condition
min. typ. max.
Feedback voltage below which
there is no regulation
VFB_min 0.9 V
Feedback voltage above which
there is no regulation
VFB_max 3.9 V
Pull up resistance RFB 15 20 25 kΩ
Feedback voltage below which
there is no switch
VFB_off 0.2 V
Feedback voltage above which
IC resumes switch
VFB_on 0.3 V
Blanking time for switch on and
off
TFB 200 ns
Half-Bridge Resonant Controller
ICE1HS01G
Electrical Characteristics
Version 2.0 16 24 August 2009
4.3.7 Over load/Open loop protection
4.3.8 Gate driver
Feedback voltage for open
loop/over load protection
VFBH 4.5 V
Feedback votlage high level for
extended timer
VFB_CH 4.5 V
Feedback votlage low level for
extended timer
VFB_CL 0.5 V
On resistance of pulling down
switch QFB
RQFB 900 ohm
Fixed Blanking time for open
loop/over load protection
TOLP_F -20-ms
Maximum time for FB voltage
to go up to VFBH during
extended blanking timer
TOLP_R -1.28-ms
Extended counter NOLP_E 512
Charging current on VINS pin
for restart time
IINST 750 µA
Maximum voltage on VINS pin
charged by IINST
VINS_H 4.5 V
Minimum voltage on VINS pin
pulled down by Q3
VINS_L 0.5 V
On resistance of pulling down
switch Q3
RQ3 900 ohm
Restart counter number NOLP_R 2048
Blanking time before IC
restarts after restart counter
reaches 2048
TBL_VINS -20-ms
Parameter Symbol Limit Values Unit Test Condition
min. typ. max.
Output voltage at logic low VGATElow -1.5VV
VCC=5V
IOUT = 20mA
Output voltage at logic high VGATEhigh 9VV
VCC=VVCCoff+0.2V
CL=2.2nF
Output voltage active shut down VGATEasd 1.0 V VVCC = 5V
IOUT = 20mA
Rise Time trise -100-nsC
L = 2.2nF
Fall Time tfall -25-nsC
L = 2.2nF
GATE current, Peak
Rising Edge
IGATE_R 1-AC
L = 2.2nF1)
GATE current, Peak
Falling Edge
IGATE_F --1.5AC
L = 2.2nF1)
Half-Bridge Resonant Controller
ICE1HS01G
Outline Dimension
Version 2.0 17 24 August 2009
1) Design characteristics (not meant for production testing)
5 Outline Dimension
Figure 15 PG-DSO-8
*Dimensions in mm
PG-DSO-8
( Plastic Dual Small Outline)
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