HV9105
HV9108
High-Voltage Switchmode Controllers with MOSFET
Ordering Information
MOSFET Switch
BV
DSS
200V
200V
R
DS(ON)
5.0Ω
5.0Ω
Min
10V
10V
+V
IN
Max
120V
120V
Feedback
Voltage
±1%
±1%
Max
Duty Cycle
49%
99%
Package Outlines
14 Pin Plastic DIP
HV9105P
HV9108P
20 Pin Plastic PLCC
HV9105PJ
HV9108PJ
Standard temperature range for all parts is industrial (-40° to +85°C).
10 to 120V input range
200V, 5Ω output MOSFET
Current-Mode Control
High Efficiency
CCITT Compatible
Internal Start-up Circuit
Applications
DC/DC Converters
Distributed Power Systems
ISDN Equipment
PBX Systems
Modems
bs
Absolute Maximum Ratings
+V
IN
, Input Voltage
V
DS
V
DD
, Logic Voltage
Control Inputs
I
D
(Peak)
O
Storage Temperature
11/12/01
Power Dissipation, Plastic DIP
Power Dissipation, PLCC
Supertex Inc. does not recommend the use of its products in life support applications and will not knowingly sell its products for use in such applications unless it receives an adequate "products liability
indemnification insurance agreement." Supertex does not assume responsibility for use of devices described and limits its liability to the replacement of devices determined to be defective due to
workmanship. No responsibility is assumed for possible omissions or inaccuracies. Circuitry and specifications are subject to change without notice. For the latest product specifications, refer to the
Supertex website: http://www.supertex.com. For complete liability information on all Supertex products, refer to the most current databook or to the Legal/Disclaimer page on the Supertex website.
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et
120V
200V
15.0V
-0.3V to V
DD
+0.3V
2.5A
-65°C to 150°C
750mW
1400mW
1
Features
General Description
The Supertex HV9105 and HV9108 are high-efficiency high
voltage SMPS ICs intended for use in power converters requiring
extreme efficiency at output power levels of 5.0W or less. The low
supply current (0.5mA max) allows them to be used to build
supplies which meet CCITT I.430 performance recommenda-
tions (60% efficiency at .025W out).
The HV9105/08 provides all the functions necessary to build a
single-switch current-mode converter of any common topology,
with a minimum of external parts.
In addition to high efficiency, because it uses Supertex’s propri-
etary high voltage BiCMOS/DMOS technology, the HV9105/08
offers numerous performance advantages when compared to
conventional PWM ICs. Dynamic range is approximately 8 times
wider than with bipolar ICs, both response speed and maximum
clock rate are faster, and no external power resistors or zeners are
necessary for high voltage starting.
Accessory circuits are included to provide either latching or
nonlatching shutdown. When shut down, device dissipation is
less than 4mW.
The HV9105/08 is intended for operation with input voltages from
10 to 120VDC.
For detailed circuit and application information, please refer
to application notes AN-H13 and AN-H21 to AN-H24.
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HV9105/HV9108
Electrical Characteristics
(Continued)
(V
DD
= 10V, +V
IN
= 48V, Discharge = -V
IN
= 0V, R
BIAS
= 820KΩ, R
OSC
= 910KΩ,T
A
= 25°C, unless otherwise specified)
Symbol Parameters
Min
Typ
Max
Unit
Conditions
Supply
I
DD
I
BIAS
V
DD
Supply Current
0.35
Bias Current
Operating Range
9.0
7.5
13.5
0.6
mA
mA
µA
V
Shutdown = -V
IN
Logic
t
SW
t
RW
t
LW
V
IL
V
IH
I
IH
I
IL
Shutdown Pulse Width
1
RESET Pulse Width
1
Latching Pulse Width
1
Input Low Voltage
Input High Voltage
Input High Current
Input Low Current
50
50
25
2.0
MOSFET Switch
BV
DSS
R
DS(ON)
I
DSS
C
DS
Breakdown Voltage
Drain-to-Source On-resistance
OFF State Drain Leakage Current
Drain Capacitance
Note:
1. Guaranteed by design. Not subject to production test.
Truth Table
Shutdown
H
H
L
L
L
→
H
O
bs
Reset
H
Output
Normal Operation
H
→
L
H
L
Off, Not Latched
Off, Latched
L
Normal Operation, No Change
Off, Latched, No Change
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et
7.0
V
1.0
5.0
µA
µA
-25
-35
200
240
V
3.5
5.0
10
Ω
µA
pF
35
3
e
ns
ns
ns
V
V
IN
= 10V
V
IN
= 0V
I
D
= 100µA
t
SD
Shutdown Delay Time
1
50
100
ns
V
SOURCE
= -V
IN
V
SOURCE
= Shutdown = 0V,
V
SOURCE
= 0V, I
D
= 100mA
V
SOURCE
= Shutdown = 0V,
V
DRAIN
= 100V
V
DS
= 25V, Shutdown = 0V
HV9105/HV9108
Typical Performance Curves
Fig. 1
0
-10
-20
-30
PSRR – Error Amplifier and Reference
Fig. 3
80
70
60
50
Error Amplifier
Open Loop Gain/Phase
240°
180°
120°
60°
0°
-60°
Gain (dB)
-40
-50
-60
-70
-80
10Hz
100Hz
1KHz
10KHz
100KHz
1MHz
30
20
10
0
-10
100Hz
e
10KHz
100KHz
-120°
-180°
1KHz
1MHz
Fig. 2
10
6
10
5
10
4
10
3
Error Amplifier Output Impedance (Z
0
)
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et
Fig. 4
1M
HV9105
Frequency
Output Switching Frequency
vs. Oscillator Resistance
HV9108
f
OUT
(Hz)
(Ω)
10
2
10
1.0
0.1
.01
100k
bs
1KHz
10KHz
100KHz
1MHz
100Hz
10MHz
10k
10k
100 k
1M
R
OSC
(Ω)
Test Circuits
Error Amp Z
OUT
PSRR
0.1V swept 10Hz – 1MHz
O
+10V
(V
DD
)
1.0V swept 100Hz – 2.2MHz
60.4K
–
+
100K1%
10.0V
100K1%
4.00V
–
+
(FB)
Reference
GND
(–V
IN
)
0.1µF
V
1
Tektronix
P6021
(1 turn
secondary)
V
1
V
2
40.2K
Reference
0.1µF
V
2
NOTE: Set Feedback Voltage so that
V
COMP
= V
DIVIDE
±
1mV before connecting transformer
5
Phase
(dB)
40
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