HV9112DB3 Supertex, HV9112DB3 Datasheet

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HV9112DB3

Manufacturer Part Number
HV9112DB3
Description
Power Management Modules & Development Tools HV9112 Demo Brd
Manufacturer
Supertex
Datasheet

Specifications of HV9112DB3

Product
Power Management Modules
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Features
Applications
Functional Block Diagram
9.0 to 80V input voltage range
Current-mode control
High efficiency
Up to 1.0MHz internal oscillator
Internal start-up circuit
Low internal noise
50% maximum duty cycle
DC/DC converters
Distributed power systems
ISDN equipment
PBX systems
Modems
VREF
BIAS
+VIN
High-Voltage Current-Mode PWM Controller
VDD
10
1
6
2
Pre-regulator/Startup
14
Current
Sources
GEN
REF
FB
+
Error
Amplifier
+
4V
1235 Bordeaux Drive, Sunnyvale, CA 94089
Internal
Circuits
8.6V
13
To
COMP
8.1V
2V
1.2V
+
+
+
Undervoltage
Comparator
Current Limit
Comparator
Comparator
Modulator
General Description
The Supertex HV9112 is a BiCMOS/DMOS single-output,
pulse width modulator IC intended for use in high-speed,
high-efficiency switch mode power supplies. It provides all the
functions necessary to implement a single-switch current mode
PWM, in any topology, with a minimum of external parts.
Because the HV9112 utilizes Supertex’s proprietary BiCMOS/
DMOS technology, it requires less than one tenth of the operating
power of conventional bipolar PWM ICs, and can operate at
more than twice their switching frequency. The dynamic range
for regulation is also increased, to approximately 8 times that
of similar bipolar parts. It starts directly from any DC input
voltage between 9.0 and 80VDC, 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 under voltage shutdown.
For similar ICs intended to operate directly from up to 450VDC
input, please consult the data sheets for the HV9120 and
HV9123.
For detailed circuit and application information, please refer to
application notes AN-H13 and AN-H21 to AN-H24.
OSC
8
IN
OSC
OSC
OUT
7
R
S
Q
Q
Tel: 408-222-8888
S
R
T
VDD
Q
11
12
3
To VDD
SENSE
SHUTDOWN
RESET
www.supertex.com
5
-VIN
4
OUTPUT
HV9112

Related parts for HV9112DB3

HV9112DB3 Summary of contents

Page 1

... VDD 2 +VIN Pre-regulator/Startup General Description The Supertex HV9112 is a BiCMOS/DMOS single-output, pulse width modulator IC intended for use in high-speed, high-efficiency switch mode power supplies. It provides all the functions necessary to implement a single-switch current mode PWM, in any topology, with a minimum of external parts. Because the HV9112 utilizes Supertex’s proprietary BiCMOS/ ...

Page 2

... A Max Units Conditions 4. 10MΩ KΩ --- 250 μ REF IN - mV/° -55°C to 125° MHz R = 0Ω OSC 120 R = 330KΩ OSC KHz 240 R = 150KΩ OSC 15 % 9.5V< V <13. ppm/° -55°C to 125°C A ● Tel: 408-222-8888 ● www.supertex.com HV9112 ...

Page 3

... A Max Units Conditions 49.6 % --- 0 % --- 125 ns --- 1 120 1.5V, V SENSE 4. shorted to COMP FB 500 4. --- - dB --- - MHz --- Ω --- - 3. 4. --- < 10µ μA V > 9. 10µA PREREG 8.9 V --- 1 < 75pF SHUTDOWN = -V - μA --- 13.5 V --- ● Tel: 408-222-8888 ● www.supertex.com HV9112 ≤ 2.0V COMP > 9.4V IN ...

Page 4

... Bordeaux Drive, Sunnyvale, CA 94089 4 = 25°C.) A Max Units Conditions 100 500pF SENSE - --- - ns SHUTDOWN and RESET low 2.0 V --- - V --- 5.0 μ -35 μ 10mA OUT 0 -10mA OUT 25 Ω ±10mA OUT ±10mA, Ω OUT T = -55°C to 125° 500pF 500pF L ● Tel: 408-222-8888 ● www.supertex.com HV9112 = -V IN ...

Page 5

... OSC OUT is required to set the oscillator frequency (see graph). One major difference exists between the Supertex HV9112 and competitive 9112s. 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 supplies that meet CCITT specifi ...

Page 6

... Schottky diode clamping of the output is not required. t ≤ 10ns R 90 50% ● 1235 Bordeaux Drive, Sunnyvale, CA 94089 50% SHUTDOWN OUTPUT 0 50% 50% 50 ● Tel: 408-222-8888 ● www.supertex.com HV9112 t ≤ 10ns F 90 ≤ 10ns R F ...

Page 7

... Fig. 5 10K 100K ● 1235 Bordeaux Drive, Sunnyvale, CA 94089 7 Output Switching Frequency vs. Oscillator Resistance 1M 100k 10k 10k 100 k R (Ω) OSC Error Amplifier Open Loop Gain/Phase -10 100 1K 10K 100K 1M Frequency (Hz) ● Tel: 408-222-8888 ● www.supertex.com HV9112 1M 180 120 60 0 -60 -120 -180 ...

Page 8

... Supertex inc. does not recommend the use of its products in life support applications, and will not knowingly sell them for use in such applications unless it receives an adequate “product liability indemnification insurance agreement.” Supertex inc. does not assume responsibility for use of devices described, and limits its liability to the replacement of the devices determined defective due to workmanship ...

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