DC/DC Switcher. HV9906 Datasheet

HV9906 Switcher. Datasheet pdf. Equivalent

Part HV9906
Description Simple Off-Line/PFC & >9V DC/DC Switcher
Feature HV9906 Initial Release HV9906 FlexSwitch Features Drive one or hundreds of LEDs including White LED.
Manufacture Supertex Inc
Datasheet
Download HV9906 Datasheet



HV9906
HV9906
Initial Release
HV9906 FlexSwitchTM
(Simple Off-Line/PFC & >9V DC/DC Switcher)
Features
General Description
Drive one or hundreds of LEDs including White LEDs
Programmable Current Source (mA to A)
Programmable Voltage Source (Steps Up or Down)
Integrator Lock Loop Technology (IL2)
o Built in Soft Start
o Allows Discontinuous Feedback
o Eliminates Compensation Components
o Eliminates Output Averaging Filters
o Inherent Dither to Reduce EMI
Eliminates High Voltage Input Electrolytic Capacitor
Smallest and Most Reliable Off-Line Solution
Isolated or Non-Isolated Applications
Can be Operated Directly from Rectified AC Mains
10V to 400V Input Range Internal Regulator
<1.5mA Operating Supply Current
Programmable Feed Forward Regulation
Programmable Feedback Sense Threshold (mV to V)
Integrating Differential Sense Feedback
Seamlessly Change from AC to Battery Operation
Applications
LED driver
Power Factor Correction
Constant Current or Voltage Source
Battery Charger / PWM Housekeeping Supplies
Traffic Lights / Street Lights
Back Lighting of Flat Panel Displays
Advertising Signs
Automotive
The Supertex HV9906 allows the development of the smallest
possible, most reliable, offline and wide DC/DC conversion range
converters for driving LEDs and other applications. The HV9906
combines internally all the components required to operate directly
from the rectified AC line with a feedback mechanism that
eliminates filters & compensation components, and which can
close the loop with feedback from a discontinuous waveform (eg.
LED current).
The HV9906 is capable of driving multiconverters, which have
been shown to provide the best performance to component count
trade off for wide conversion range applications like offline
converters. Applicable multiconverters include bucking & boosting
topologies, in isolated & non-isolated configurations, as well as
power factor correcting topologies from <1W up to 150W.
Proper choice of external components will allow the programming
of currents from <1mA to several amps and will allow stepping up
or stepping down from the input without the need to change
components. For example, the same HV9906 converter nominally
regulating to 60VDC output may operate from 12VDC, or from
rectified AC input to 265VRMS.
The HV9906 utilizes a programmable inversely proportional fast
feed forward algorithm to calculate output on time and a novel
Integrating Lock Loop (IL2) feedback with programmable threshold
differential sensing. The sensed feedback may be positive or
negative with respect to ground and the signal may be
discontinuous. In some topologies this control method permits the
elimination of the bulky input filter capacitor (a small high voltage
ceramic or film capacitor is required to maintain a high frequency
path). This algorithm when used with certain multiconverters such
as the flyback-buck, with a fixed load, results in near constant
frequency with only a small dither which helps meet FCC
requirements.
Typical Application Circuit
12VDC to 400VDC
or
65VAC to 280VAC
1N4007
D1 D2
D5
MURS160
D6
MURS160
L2
15uH
D4 D3
C1
0.047uF
400V
R1
8M
R2
100k
C2
1uF
to
6.8uF
C3
0.033uF
L1
56uH
D7
MURS160
C4
Optional
U1
+Vin GATE
Von NS
HV9906
Vdd PS
AGND PGND
M1
IRFBC30AF
R3
900k
R4
300k
NPN Bipolar Transistor Array or Matched 2N2222
Q1 Q2
Q3
Q25
Negative Voltage
-
+
LED-1
Row 1
LED-1
Row 2
LED-1
Row 3
LED-1
Row 25
20mA
20mA
20mA
20mA
LED-9
Row 1
LED-9
Row 2
LED-9
Row 3
LED-9
Row 25
R5
LED-10
LED-10
LED-10
100
Row 2
Row 3
Row 25
1 07/23/02
Supertex, Inc. 1235 Bordeaux Drive, Sunnyvale, CA 94089 TEL: (408) 744-0100 FAX: (408) 222-4895 www.supertex.com



HV9906
Absolute Maximum Ratings*
+VIN Input Voltage
VDD
VON Pulse Width Control Voltage
PS & NS Pin Feedback Voltage
-0.3V to +450V
-0.3V to +15V
-0.3 to +10V
-0.3V to +10V
Operating Ambient Temperature Range
-40°C to +85°C
Operating Junction Temperature Range
-40°C to +150°C
Storage Temperature Range
-65°C to +150°C
Thermal Resistance Junction to Ambient, SOIC
159°C/W
Thermal Resistance Junction to Case, SOIC
45°C/W
Thermal Resistance Junction to Ambient, Plastic DIP 110°C/W
Thermal Resistance Junction to Case, Plastic DIP
35°C/W
*All voltages referenced to AGND and PGND connected together.
Ordering Information
8 Pin Plastic DIP
HV9906P
Package Options
8 Pin SOIC
HV9906LG
HV9906
Dice
HV9906X
Electrical Characteristics (Unless otherwise noted TA = 25°C)
Symbol
Parameter
Min Typ Max Units TA
Conditions
Input Regulator/Vdd Supply
+VIN Input Voltage
+IIN Input Current
VDD(REG)
Internal Regulator Output Voltage
VUVLO
Under Voltage Lockout Threshold
VHYST
Under Voltage Lockout Hysteresis
8.5 400 V * Typical under UVLO
1.5 mA * Gate pin open and operating at FMAX
10 11 V *
8.0 V Decaying VDD
0.50 V
MOSFET Gate Drive Output
tR Rise Time
tF Fall Time
75 nSec
75 nSec
CGATE = 750pF
CGATE = 750pF
PWM
P(VON)
P(VON)
PMAX
fMIN
fMAX
Output Pulse Width at VON
Output Pulse Width at VON
Maximum Output Pulse Width
Minimum Output Frequency
Maximum Output Frequency
215 300 nSec
2 3.35
uSec
17.8 uSec
10 13.5 17 KHz
250 450 KHz
VON = 5.0V
VON = 0.2V
VON = 0V
Current Sense
VPS Positive Sense Pin Voltage
VNS Negative Sense Pin Voltage
0.9 1 1.1 V * Note: VPS and VNS are matched
0.9 1 1.1 V * Note: VPS and VNS are matched
Pulse Width Control Feed Forward Voltage
VON Effective Pulse Width Control Voltage Range 0.2
6.0 V *
The “*” denotes specifications that apply over the full temperature range (-40°C to +85°C)
2 07/23/02
Supertex, Inc. 1235 Bordeaux Drive, Sunnyvale, CA 94089 TEL: (408) 744-0100 FAX: (408) 222-4895 www.supertex.com







@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site (Privacy Policy & Contact)