HV9112_07 Datasheet, PDF (1/8 Pages) Supertex, Inc – High-Voltage Current-Mode PWM Controller

HV9112
High-Voltage Current-Mode PWM Controller
Features
► 10V to 120V Input Voltage 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
Ordering Information
Device
Package Option
14-Lead Narrow Body SOIC (NG)
HV9112
HV9112NG-G
-G indicates package is RoHS compliant (‘Green’)
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 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 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.
Pin Configuration
Absolute Maximum Ratings
Parameter
Value
Input voltage, V_IN
Logic voltage, V_DD
Logic linear input,
FB and sense input voltage
Storage temperature
80V
15.5V
-0.3V to V_DD +0.3V
-65°C to +150°C
Power dissipation
750mW
Stresses beyond those listed under “Absolute Maximum Ratings” may
cause permanent damage to the device. These are stress ratings only,
and functional operation of the device at these or any other conditions
beyond those indicated in the operational sections of the specifications
is not implied. Exposure to absolute maximum rating conditions for
extended periods may affect device reliability.
OSC IN
DISCHARGE
VREF
SHUTDOWN
RESET
COMP
FB
OSC OUT
VDD
-VIN
OUTPUT
SENSE
+VIN
BIAS
14-Lead Narrow Body SOIC (NG)
Product Marking
Top Marking
HV9112NG
YWW LLLLLLLL
Bottom Marking
CCCCCCCCC AAA
Y = Last Digit of Year Sealed
WW = Week Sealed
L = Lot Number
C = Country of Origin*
A = Assembler ID*
= “Green” Packaging
*May be part of top marking
14-Lead Narrow Body SOIC (NG)