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HV9112 の電気的特性と機能

HV9112のメーカーはSupertex Incです、この部品の機能は「High-Voltage Current-Mode PWM Controller」です。


製品の詳細 ( Datasheet PDF )

部品番号 HV9112
部品説明 High-Voltage Current-Mode PWM Controller
メーカ Supertex Inc
ロゴ Supertex  Inc ロゴ 




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HV9112 Datasheet, HV9112 PDF,ピン配置, 機能
HV9110
HV9112
HV9113
High-Voltage Current-Mode PWM Controller
Ordering Information
+VIN
Min Max
10V 120V
9.0V 80V
10V 120V
Feedback
Max
Accuracy Duty Cycle
< ± 1%
± 2%
< ± 1%
49%
49%
99%
14 Pin
Plastic DIP
HV9110P
HV9112P
HV9113P
Standard temperature range for all parts is industrial (-40° to +85°C).
Features
20 Pin
Plastic PLCC
HV9110PJ
HV9112PJ
HV9113PJ
Package Options
14 Pin
Narrow Body SOIC
HV9110NG
HV9112NG
HV9113NG
Die
HV9110X
HV9112X
HV9113X
General Description
10 to 120V input range
Current-mode control
High efficiency
Up to 1.0MHz internal oscillator
Internal start-up circuit
Low internal noise
Applications
DC/DC converters
Distributed power systems
ISDN equipment
PBX systems
Modems
Absolute Maximum Ratings
The Supertex HV9110 through HV9113 are a series of BiCMOS/
DMOS single-output, pulse width modulator ICs intended for use
in high-speed high-efficiency switchmode power supplies. They
provide all the functions necessary to implement a single-switch
current-mode PWM, in any topology, with a minimum of external
parts.
Because they utilize Supertex’s proprietary BiCMOS/DMOS tech-
nology, they require less than one tenth of the operating power of
conventional bipolar PWM ICs, and can operate at more than
twice their switching frequency. Dynamic range for regulation is
also increased, to approximately 8 times that of similar bipolar
parts. They start directly from any DC input voltages between 10
and 120VDC, requiring no external power resistor. The output
stage is push-pull CMOS and thus requires no clamping diodes
for protection, even when significant lead length exists between
the output and the external MOSFET. The clock frequency is set
with a single external resistor.
Accessory functions are included to permit fast remote shutdown
(latching or nonlatching) and undervoltage shutdown.
For similar ICs intended to operate directly from up to 450VDC
input, please consult the data sheet for the HV9120/9123.
+VIN, Input Voltage
HV9110/9113
HV9112
120V
80V
VDD, Logic Voltage
Logic Linear Input, FB and
Sense Input Voltage
Storage Temperature
Power Dissipation, SOIC
Power Dissipation, Plastic DIP
Power Dissipation PLCC
15.5V
-0.3V to VDD+0.3V
-65°C to 150°C
750mW
1000mW
1400mW
For detailed circuit and application information, please refer
to application notes AN-H13 and AN-H21 to AN-H24.
11/12/01
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 prod1ucts, refer to the most current databook or to the Legal/Disclaimer page on the Supertex website.

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HV9112 pdf, ピン配列
HV9110/HV9112/HV9113
Electrical Characteristics (continued)
(Unless otherwise specified, VDD = 10V, +VIN = 48V, Discharge = -VIN = 0V, RBIAS = 390K, ROSC = 330K,TA = 25°C.)
Symbol Parameters
Min Typ Max Unit Conditions
Pre-regulator/Startup
+VIN
Input Voltage
HV9110/13
HV9112
+IIN
VTH
VLOCK
Input Leakage Current
VDD Pre-regulator Turn-off Threshold Voltage
Undervoltage Lockout
Supply
IDD Supply Current
IQ Quiescent Supply Current
IBIAS Nominal Bias Current
VDD Operating Range
Shutdown Logic
tSD Shutdown Delay1
tSW Shutdown Pulse Width1
tRW RESET Pulse Width1
tLW Latching Pulse Width1
VIL Input Low Voltage
VIH Input High Voltage
IIH Input Current, Input Voltage High
IIL Input Current, Input Voltage Low
120 V IIN < 10µA; VCC > 9.4V
80
10 µA VDD > 9.4V
8.0 8.7 9.4 V IPREREG = 10µA
7.0 8.1 8.9 V
0.75 1.0 mA CL < 75pF
0.55
mA Shutdown = -VIN
20 µA
9.0 13.5 V
50 100 ns CL = 500pF, VSENSE = -VIN
50 ns
50 ns
25 ns Shutdown and reset low
2.0 V
7.0 V
1.0 5.0 µA VIN = VDD
-25 -35 µA VIN = 0V
Output
VOH Output High Voltage
HV9110/13
HV9112
HV9110/13
VOL Output Low Voltage
All
HV9110/13
ROUT Output Resistance
Pull Up
Pull Down
Pull Up
Pull Down
tR Rise Time1
tF Fall Time1
Note:
1. Guaranteed by design. Not subject to production test.
VDD -0.25
V IOUT = 10mA
VDD -0.3
VDD -0.3
IOUT = 10mA,
TA = -55°C to 125°C
0.2 V IOUT = -10mA
0.3 IOUT = -10mA,
TA = -55°C to 125°C
15 25 IOUT = ±10mA
8.0 20
20 30 IOUT = ±10mA,
10 30
TA = -55°C to 125°C
30 75 ns CL = 500pF
20 75 ns CL = 500pF
3


3Pages


HV9112 電子部品, 半導体
Test Circuits
Error Amp ZOUT
+10V
(VDD)
(FB)
GND
(VIN)
Reference
+
0.1µF
1.0V swept 100Hz 2.2MHz
60.4K
Tektronix
P6021
V1
(1 turn
secondary)
V2
40.2K
NOTE: Set Feedback Voltage so that
VCOMP = VDIVIDE ± 1mV before connecting transformer
HV9110/HV9112/HV9113
0.1V swept 10Hz 1MHz
PSRR
100K1%
10.0V
100K1%
4.00V
+
Reference
V2
0.1µF
V1
Detailed Description
Preregulator
The preregulator/startup circuit for the HV911X consists of a high-
voltage n-channel depletion-mode DMOS transistor driven by an
error amplifier to form a variable current path between the VIN
terminal and the VDD terminal. Maximum current (about 20 mA)
occurs when VDD = 0, with current reducing as VDD rises. This path
shuts off altogether when VDD rises to somewhere between 7.8
and 9.4V, so that if VDD is held at 10 or 12V by an external source
(generally the supply the chip is controlling). No current other than
leakage is drawn through the high voltage transistor. This mini-
mizes dissipation.
An external capacitor between VDD and VSS is generally required
to store energy used by the chip in the time between shutoff of the
high voltage path and the VDD supplys output rising enough to
take over powering the chip. This capacitor should have a value
of 100X or more the effective gate capacitance of the MOSFET
being driven, i.e.,
Cstorage 100 x (gate charge of FET at 10V ÷ 10V)
as well as very good high frequency characteristics. Stacked
polyester or ceramic caps work well. Electrolytic capacitors are
generally not suitable.
A common resistor divider string is used to monitor VDD for both
the undervoltage lockout circuit and the shutoff circuit of the high
voltage FET. Setting the undervoltage sense point about 0.6V
lower on the string than the FET shutoff point guarantees that the
undervoltage lockout always releases before the FET shuts off.
Bias Circuit
An external bias resistor, connected between the bias pin and VSS
is required by the HV911X to set currents in a series of current
mirrors used by the analog sections of the chip. Nominal external
bias current requirement is 15 to 20µA, which can be set by a
390Kto 510Kresistor if a 10V VDD is used, or a 510kto
680Kresistor if VDD will be 12V. A precision resistor is not
required; ± 5% is fine.
Clock Oscillator
The clock oscillator of the HV911X consists of a ring of CMOS
inverters, timing capacitors, a capacitor discharge FET, and, in
the 50% maximum duty cycle versions, a frequency dividing flip-
flop. A single external resistor between the OSC In and OSC Out
pins is required to set oscillator frequency (see graph). For the
50% maximum duty cycle versions the Discharge pin is internally
connected to GND. For the 99% duty cycle version, the discharge
pin can either be connected to VSS directly or connected to VSS
through a resistor used to set a deadtime.
One difference exists between the Supertex HV911X and com-
petitive 911Xs: On the Supertex part the oscillator is shut off
when a shutoff command is received. This saves about 150µA of
quiescent current, which aids in the construction of power sup-
plies to meet CCITT specification I-430, and in other situations
where an absolute minimum of quiescent power dissipation is
required.
Reference
The Reference of the HV911X consists of a stable bandgap
reference followed by a buffer amplifier which scales the voltage
up to approximately 4.0V. The scaling resistors of the reference
buffer amplifier are trimmed during manufacture so that the output
of the error amplifier when connected in a gain of 1 configuration
is as close to 4.000V as possible. This nulls out any input offset
of the error amplifier. As a consequence, even though the ob-
served reference voltage of a specific part may not be exactly
4.0V, the feedback voltage required for proper regulation will be.
A 50Kresistor is placed internally between the output of the
reference buffer amplifier and the circuitry it feeds (reference
output pin and non-inverting input to the error amplifier). This
allows overriding the internal reference with a low-impedance
voltage source 6.0V. Using an external reference reinstates the
input offset voltage of the error amplifier, and its effect of the exact
value of feedback voltage required.
Because the reference of the 911X is a high impedance node, and
usually there will be significant electrical noise near it, a bypass
capacitor between the reference pin and VSS is strongly recom-
mended. The reference buffer amplifier is intentionally compen-
sated to be stable with a capacitive load of 0.01 to 0.1µF.
6

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共有リンク

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部品番号部品説明メーカ
HV9110

High-Voltage Current-Mode PWM Controller

Supertex  Inc
Supertex Inc
HV9110

High-Voltage Current-Mode PWM Controller

Microchip
Microchip
HV9112

High-Voltage Current-Mode PWM Controller

Supertex  Inc
Supertex Inc
HV9112

High-Voltage Current-Mode PWM Controller

Microchip
Microchip


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