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參數(shù)資料
| 型號： | PW-85075P6-820 |
| 英文描述： | Industrial Control IC |
| 中文描述： | 工業(yè)控制IC |
| 文件頁數(shù)： | 5/13頁 |
| 文件大?。?/td> | 196K |
| 代理商： | PW-85075P6-820 |
5
June 13, 2000 Data Device Corporation
0.6 μs Min.
50%
UPPER
LOWER
50%
50%
0.6 μs Min.
50%
FIGURE 2. PW-8X075P6 DEAD BAND REQUIREMENT
If the short is still present, the circuit will repeat the shut down
and auto reset until the short is clear. The users can use the
DISABLE/RESET (H) to shut down the gate drivers if a short per-
sists. The AUTO RESET is inactive when it presented a logic
high (H). Protecting against a soft-short requires a PW-84075
(current sensing) and external circuitry.
occurs, the external circuit can activate the SLEEPMODE (H)
and shut down the gate drivers.
When a soft-short
SLEEP MODE
The SLEEP MODE input turns the internal power supply on or off.
A logic high (H) on the SLEEP MODE input disables the internal
power supply, disabling the motor drive output. No damage will
occur to the motor drive during turn on or turn off of the power sup-
ply. Additionally, no special power up sequence is required. A
logic low (L) turns the power supply on and allows the motor drive
to operate normally.
VCC,VCC RTN
The VCC and VCC RTN are power connections that supply input
power to the internal power supply, the gate drive and fault con-
trol circuits.
VBUS+,VBUS-
VBUS+ and VBUS- are the high voltage power connections to the
output stage. The high voltage can be either unipolar, +V and
ground or bipolar, +/- V.
External capacitor filtering will be
required. See DDC applications note AN/H-6.
OUTPUT
The output connects to one input of the motor and applies VBUS+,
VBUS-, or high impedance to the motor based on the state of the
control inputs. It is capable of sourcing or sinking up to 75 Amps,
and the output can withstand a short circuit to VBUS+ or VBUS-
without any damage by automatically turning itself off (Zstate).
VDD,VDD RTN (APPLIES TO THE PW-84075P6 ONLY)
The VDD and VDD RTN supply input power to the current ampli-
fier.
I_VOUT (APPLIES TO PW-84075P6 ONLY)
The voltage on the I_VOUT pin represents current passing
through RSENSE in the direction shown in the block diagram.This
I_VOUT voltage is scaled by the input voltage at VREF, where
I_VOUT = (VREF/2) + (VREF/150) * I_RSENSE
where, I_RSENSE is current through RSENSE
I_VOUT is electrically isolated from the output stage. When the
power supply is shut down (SLEEP MODE input high), the voltage
at I_VOUT will indicate 0V.
VREF (APPLIES TO PW-84075P6 ONLY)
A voltage reference from an external source is connected to the
VREF pin to set the output voltage scale for I_VOUT.
RSENSE+, RSENSE- (APPLIES TO PW-84075P6 ONLY)
These pins are across RSENSE and can be connected in series
with the output, VBUS+ or VBUS- to measure current. The inter-
nal connections to RSENSE are Kelvin to minimize errors.
However, these pins can be connected absolutely anywhere with-
in the isolation restrictions on the pins (600V to power pins, 2500V
to logic pins).
I _ABSVAL (APPLIES TO PW-84075P6 ONLY)
The I_
ABSVAL
output voltage is the absolute value of the I_VOUT
voltage signal. The scale is 0 to VREF for +/- current in RSENSE.
OC FAULT (APPLIES TO PW-84075P6 ONLY)
The OC FAULT output is an open drain output which indicates that
current flowing through RSENSE has exceeded the overcurrent
threshold. Once the fault threshold is exceeded, the output tran-
sitions from open drain to low within 6 μs.
REGEN STATUS (APPLIES TO PW-85075P6 ONLY)
The REGEN STATUS pin is referenced to REGEN BUS-. It indi-
cates the state of the regen clamp switch, H = on, L = off. An
external opto-isolator input can be connected between REGEN
STATUS and REGEN BUS- to translate this status to logic circuits,
if desired.
OV ADJ (APPLIES TO PW-85075P6 ONLY)
The PW-85075P6 is internally set for a trip voltage of 400V. To set
a different trip voltage, an external resistor is connected from the
OV ADJ pin to either REGEN BUS- or VBUS+ pins (See FIG-
URES 4A and 4B). These pins are available on the control pins.
This resistor should be selected for the voltage, Vmax, for the
overvoltage switch to turn on.
0
20
55
50
45
40
35
30
25
15
95
85
75
65
55
105
115
125
5 kHz
35 kHz
15 kHz
25 kHz
10 kHz
60
65
70
75
45
35
Maximum Operating Case Temperature, Tc °C
25
10
5
FIGURE 3. PW-8X075P6 OUTPUT PHASE CURRENT
VS. MAXIMUM OPERATING CASE TEMPERATURE
VBUS+ = 270 Vdc
Duty Cycle = 50%
Tj(max) = 150°C
O
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