Microchip HV9150DB1 Handleiding

Microchip Niet gecategoriseerd HV9150DB1

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Supertex inc.
Supertex inc.
www.supertex.com
HV9150DB1
Doc.# DSDB-HV9150DB1
NR120213
General Description
The Supertex HV9150DB1 demoboard is for the evaluation
of the HV9150 hysteretic DC/DC controller. This demoboard
consists of all necessary components to create a 5V to 200V
step up converter capable of providing 600mW of output
power.
This DC/DC converter has a single voltage input and a single
voltage output. The demoboard is conîš¿gured to use the internal
voltage reference. In addition, the user also has access to an
external voltage reference pin if it is preferred. The output voltage
can be adjusted from 50V to 200V by adjusting the potentiometer
next to the output terminals.
The potentiometer is used in the resistor feedback network for
demonstration purposes.
The demoboard shows that all necessary components for this
600mW converter can be packed into a square inch, single sided,
PCB area.
To ensure a stable operation of the DC/DC converter, it is
recommended that a low ESR bulk decoupling capacitor be connect
at the input voltage supply.
Board Layout
Hysteretic DC/DC Controller Demoboard
Speciîš¿cations
Parameter Value
VIN input voltage 4.75V to 5.25V
VOUT output voltage 50V to 200V
IOUT output current 3mA max at 200V
Operating frequency 200kHz typical
Actual Dimensions: 46mm x 41mm
25mm
26mm
2
HV9150DB1
Supertex inc.
www.supertex.com
Doc.# DSDB-HV9150DB1
NR120213
HV9150DB1 Circuit Schematic
VLL
CVLL1
1µF
16V
VLL VLL VLL
F6
F5
F4
F3
U3
U4
U5
I
8
7
6
5
1
2
3
4
XEPVTN
HTGSaCFL
GZVaTGH
EV
XFF
ICVG
HDaTVP
HD
CVLL1
22µF
16V
VDD
ERCF
EER3/
EER3-
EER4/
EER4-
CIN1
22µF
VIN
L1
33µH
VR7
VR4
VR3
JkXQWV
CHV1
1.0µF
500V
CFB
NA
50V
CCT
1µF
CCP1
0.22µF
16V
CCP2
0.22µF
16V
EEY
EY
R2
7.5M
Hi-V 1206
R1_TRIM
200k
R1
31.6k
RFREQ
127k
RREF
0
R9
NA
R8
100k
R10
1k
R5
43k
R6
100k
R7
100k
VDD
F5
505X
O3
DU\64FP47PU5I
F3
DCX;;U
1
2
3
6
5
4
VIN
VR5VR6
F4
703X
XNN
IPF
GP
ERaGP
GP
ERaGP
XEPVN
1
2
3
4
5 6 7 8
12
11
10
9
CPAD 16 15 14 13
VIN VDDVLL
R4
NA
R3
0
ER"?"QHH
ER"?"QP
T5"?"Lworgt
T5"?"P1C
T6"?"P1C
T6"?"Lworgt
NFQ"Oqfg"Gpcdng
505X"\gpgt"Fkqfg
703X"\gpgt"Fkqfg
Rtqvgevkqp
JX;372
TTGH"ejcpig"vq"fgeqwrnkpi"ecrcekvqt
kh"gzvgtpcn"tghgtgpeg"ku"crrnkgf0
W3
3
HV9150DB1
Supertex inc.
www.supertex.com
Doc.# DSDB-HV9150DB1
NR120213
LDO (Linear Regulator) and CP (Charge Pump)
Mode Option
The HV9150 can operate in either LDO or CP modes. The
CP mode is preferred if the voltage of the input supply is
lower than 5V. The internal charge pump converter can
generate a higher voltage supply to drive the gate driver. If
a higher supply voltage is available, the LDO mode should
be chosen. The following table shows the options to select
between LDO and CP modes.
The R10 and D3 form an independent 3.3V output startup
circuit to set the device to LDO mode operation. These
components are not required on the demoboard if the CP
mode operation is preferred.
Internal and External Voltage Reference Option
The HV9150 can be conîš¿gured to use either an internal or
external voltage reference. The demoboard is set to use the
internal voltage reference. In order to use external voltage
reference, the user can replace the RREF 0Ω jumper with
a 0.1µF decoupling capacitor and connect the external
reference to the TP5 terminal. Please be aware that the EN
pin is required to toggle once to activate the device to enable
the external voltage reference option.
Modiîš¿cation to 300V Output Operation
The demoboard can be reconîš¿gured to generate a 300V
output voltage. The user can replace the MOSFET driver
with one rated at 300V and adjust the value of potentiometer
to obtain a 300V output voltage. Since the ON-resistance
is different, the maximum output current may change. The
user can adjust the switching frequency or duty cycle to
compensate for the lower ON-resistance. Please see the
table below.
Part
Reference LDO Mode CP Mode
R30 Not installedΩ
R4Not installed 0Ω
R10 1k Not installedΩ
D33.3V Zener Not installed
R7Not installed 100kΩ
Part
Reference 250V Output 300V Output
M1
BSZ42DN25NS3G
250V, 425m , 5AΩ
AON7460
300V, 830m , 4AΩ
HV9150DB1 - Typical Performance
90
85
80
75
70
65
60 2 3 4 5 6 7 8 9 10 12 13 14 11
V{rkecn"Ghhkekgpe{"*'+
Kprwv"Xqnvcig"*X+
JX;372"J{uvgtgvke"Eqpxgtvgt"Ghhkekgpe{
(VO = 200V and IO = 3mA, = 33µH, Duty = 75%, 25°C)L
Ejctig"Rwor"Oqfg
*HICVG"?"7:mJ|+
NFQ"Oqfg
*HICVG"?"422mJ|+

Product specificaties

Merk: Microchip
Categorie: Niet gecategoriseerd
Model: HV9150DB1

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