Blocking Protection JY02A sensorless Brushless Dc Motor Driver Ic
Brand Name:JUYI
Model Number:JY02A
Minimum Order Quantity:1 set
Delivery Time:5-10 days
Payment Terms:T/T,L/C,Paypal
Place of Origin:China
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Product Details
JY02A Blocking Protection Brushless DC Motor Driver IC With
Starting Torque Regulation Function
JY02A
Sensorless brushless DC motor control IC
(JY02A standard form)
Version:V2.0 Date:20180530
JY02A is ASIC for sensorless brushless DC motor , with simple
peripheral circuit, perfect function, compact size, simple
debugging (almost no debugging), high drive efficiency, flexible
application, widely application, etc.
JY02A is a pure hardware application IC, which solve the trouble of
writing programs. JY02A internally solidifies various sensorless
brushless DC motor drive control circuits, such as adaptive start
circuit, power compensation circuit, Q value correction circuit,
power factor correction, Phase detection circuit, bidirectional
operation decoding circuit, locked-rotor protection circuit, back
electromotive force detection circuit, current detection &
control circuit, voltage detection & protection circuit, etc.,
after a very few amount of external component adjustment, can drive
various sensorless brushless DC motor, JY02A has a certain
load-starting capability, which is very important in most
applications. JY02A can be applied to three-phase DC brushless
motor with "Y" and "triangle" connection.
Applications: sweeping robots, automotive water pumps, wall-hung
boiler circulation pumps, home booster pumps, oxygen generators,
various fans/blowers, electric screwdrivers, electric curtains,
automatic doors, hydraulic oil pumps, high pressure air pumps,
automotive air conditioning compressors , DC brushless compressor,
AGV trolley, various linear and loop logistics sorting equipment,
lawn mower, sprayer, underwater propeller, etc.
Functional characteristics:
☆Working voltage: 4.5 v-5.5 V. ☆Working temperature: -55-125 ℃
☆Drive mode: SPWM ☆Adaptive motor: Sensorless BLDC motor
☆Direction control: CW/CCW ☆Soft reversing: Yes
☆Speed signal: Yes ☆Overload protection: Yes
☆Current closed loop: Yes ☆Constant current drive: Yes
☆Blocking protection: Yes ☆Starting torque regulation: Yes
☆Soft starting: Yes ☆Special technology: JYKJ full condition safety
start function
☆Speed adjustment: linear ☆EAI self-adaptation function
PIN NAME FUNCTION REMARK
1 EMFC BEMF detection input port C Connect after W phase partial
pressure, pay attention to withstand voltage range
2 VR speed governing 0-5V analog input
3 VOD voltage detection OV value:3.6V,LV value:0.8V
4 GND GND 0V
5 VDD 5V 4.5V--5.5V
6 Is current detection Current feedback signal input
7 EMF_ON EMF signal output EMF regulation control
8 TC Temperature detecting port Protection: above 4.53V
Protection remove: under 3.70V
9 QD Starting torque adjustment:0-2.5V 0--60%
10 UH U phase top drive output U phase top drive PWM output 13KHz
11 UL U phase bottom drive output U phase bottom drive commutation
signal output
12 VH V phase top drive output V phase top drive PWM output 13KHz
13 VL V phase bottom drive output V phase bottom drive commutation
signal output
14 WH W phase top drive output W phase top drive PWM output 13KHz
15 WL W phase bottom drive output W phase bottom drive commutation
signal output
16 Z/F CW and CCW rotation control H: forward / L :Reverse
17 M Speed pulse output One pulse per commutation
18 EMF BEMF common terminal
19 EMFA BEMF detection input port A Connect after U phase partial
pressure, pay attention to withstand voltage range
20 EMFB BEMF detection input port B Connect after V phase partial
pressure, pay attention to withstand voltage range
DC Electrical Characteristics
Symbol Min Typical Max Unit Condition
VDD 4.5 5 5.5 V VDD-GND
IDD 9 mA All output pins are disconnected
VIL 0.3 V IO input Low level value
VIH 3.5 V IO input High level value
EMFV 0.01 4.5 V BEMF effective voltage
VFOV 0 2.5 V Range of starting torque voltage
IOL 10 mA Io Low level suction current
IOH 5 mA IO high -level output current
VODL 0.75 0.8 0.85 V Undervoltage protection value
VODH 2.95 3 3.05 V overvoltage protection value
RPT 3 S Soft Start time
ISVA 38 40 43 mV Constant Current Driving Is limit value
ISVB 87 90 95 mV Overcurrent fast protection value
Vjd 0 5 V Analog input voltage range
Ijd 100 nA Analog input current value
JY02A internal functional block diagram
JY02A drive signal is positive polarity output, choosing adapted
MOS drive circuit and power MOS is very important!
JY02A Drive mode and parameters:
1:UH/VH/WH phase top drive PWM output,UL/VL/WL phase bottom drive
commutation signal output, this drive mode is a economic way to
reduce the costs of hardware, especially in application of high
voltage and high-power motor drivers. top drive PWM output mode is
more easier circuit and higher stability than bottom drive PWM
output mode.
2:The PWM frequency of JY02A is 13KHz, which not only takes into
account the comprehensive ratio of efficiency and noise, but also
increases the power and reduces the power consumption of the
driving circuit . The torque of the motor is higher than that of
20KHz under the same power supply.
Pulse of JY02A
Please take a note that JY02A output one pulse signal during the
BLDC motor commutating phase each time. It means JY02A not produce
one pulse when the motor turn a round. For example as following
schematic diagram: its an inner rotor, 2 pairs pole motor, it means
the motor needs commutating phase for 6 times for each round, so
JY02A will output 6 pulses each motor round
Schematic diagram of internal structure of 2 pair pole inner rotor
motor
Forward drive output oscillogram
(SPWM output close to sinusoid, well electromagnetic noise
restraint )
Reversing drive output oscillogram
(SPWM output close to sinusoid, well electromagnetic noise
restraint )
Schematic of application:
1,JY02A typical application Schematic for sensorless brushless DC
motor
JY02A has built-in BEMF detection circuit
JY02A no need external Comparator Circuit for sensorless brushless
DC motor
Remark:
Is is the current signal feedback input terminal. When the Is
terminal voltage reaches to 40mV, the system starts overload
monitoring and enters the constant current control state. The
driving current is no longer increased by the VR terminal voltage
or the load increases. This function effectively prevents MOSFET
burn out when the load is too large, and can continue to provide
power to the motor to maintain the maximum driving state. When the
accidental current continues to increase, the voltage of the Is
terminal reaches or exceeds 90mV, the JY02A will immediately enter
to protection state, and close all outputs ,the protection only
released when VR is reduced to 0V or re-powered
According to Ohm's law, we only need to change the value of R to
change the protection current value. JY02A is very flexible in
current protection (more on this later)
Functional description and application considerations
a) Overload protection and current sampling resistance value
selection:
JY02A has a relatively complete overload protection function. the
overload protection and current abnormal protection function of
JY02A will take effect only under the condition of the current
sampling resistor R is selected properly. When the Is pin voltage
reaches 0.40mV, the overload monitoring starts and enter into
constant current state and keeps the driving current constant. At
this state, the driving current no longer rises with the voltage of
the VR pin, and will not increase with the increase of the load. In
this state, JY02A will continue to provide a constant power for the
motor and keeps the motor in normal working state. If the Is pin
voltage reaches or exceeds 90mV, the system will judge all the
outputs within 4.5 microseconds.
Here is a detailed example how to select properly R value as
follow:
R value formula: I = 0.04/R
I: Constant current setting value, unit: A
0.04: is the voltage value of Is pin of JY02A
R: current limiting resistance, unit: Ohm
For example, a controller with an operating current of 3A , set the
constant current to 5A for safety, and the system keep the current
at 5A when the current reaches or exceeds 5A, after the formula I =
0.04 /R, R=0.04/I so R value = 0.04 / 5=0.008 Ohm, so the current
sampling resistor should use a power resistor of 8 milliohms
(current sampling resistor normally is cement resistor and
constantan wire)
b) locked-rotor protection: JY02A has automatic restart function.
Once the running motor is blocked by external force, the system
will automatically protect and restart. If the restart is
unsuccessful for 10 times, it will automatically stop output.
Disconnect the power or reduce the voltage of the VR pin to 0V to
unlock the protection. Increase the VR voltage to restart the
motor.
c) Z/F soft reversing:The 16th pin Z/F of JY02A is the reversing
control pin. This pin can be connected to 5V or GND. JY02A has soft
reversing function. This function protects the MOSFET and motor in
many applications, and improves the reliability and service life,
the specific operation is that when the motor is rotating in one
direction, when the Z/F voltage level changes, the driver stops
output first, the motor rotates freely till stop, and then starts
to run in the other direction.
d) FG speed signal feedback:JY02A also outputs the speed pulse
signal while driving the motor. JY02A will output one pulse every
phase commutating. This is perfectly reflected in high-end
applications. In the case of precise speed control, such as DC
brushless fan, DC Brushless pumps, etc.,
With the speed signal feedback, these functions are easy to
achieve, Such as require stable speed and stable torque, and
closed-loop control solution.
e) TC Temperature protection port:JY02A has an external connect
temperature protection function. The application is quite simple,
only an external NTC and a resistor are required, can place the NTC
in the place where need be monitored, such as MOSFET or motor. When
the temperature reaches a certain value, the system will
automatically protect, the system will restart after the
temperature down to safety value. it is recommended parameters of
NTC: NTC of 10K3950K, divider resistor with 10K 1%, according to
this parameter, the temperature will automatically protect when the
temperature reaches 100 degrees, of course, you can also replace
other models NTC or adjust divider resistor according to the actual
application. The value of the resistor reaches the temperature
value that you want to protect.
f) QD Starting torque adjustment:By adjusting the voltage of the QD
terminal, the starting torque can be directly changed. The voltage
adjustment range is 0V-2.5V, and the normal motor starting torque
voltage is between 0V - 0.8V (the starting torque is not as bigger
as better)
Summary:
There are many factors affecting the DC brushless Hallless motor
driver, such as the working voltage, speed, commutation angle,
load, inductance, back EMF, starting load, etc., which will affect
the DC brushless motor drive performance. The driving effect of the
motor, so more testing are required to make a perfect
high-efficiency, stable DC brushless sensorless motor driver .
Declaration:
In order to improve the performance of DC brushless sensorless
motor driver, reduce the volume, reduce the production and
development costs, JY02A is our the second DC brushless sensroless
motor driver IC that does not require an external comparator. JY02A
integrates all the circuits of DC brushless sensorless motor driver
(excluding power components). In order to better service to our
customers, we offer three JY02 typical application circuits for
reference. We will continue to improve its performance according to
market applications., actual IC function may be slightly different
from the introduction of this article, if you have any problems in
the application, you can contact us for the latest information.
Here are three typical application schematics and product photos
for reference. These schematics are all validated for mass
production and related physical products provide learning research.
These three typical application schematics basically cover the most
of applications.
JY02A small power DC brushless Hallless motor drive application
schematic
Working voltage:7.5V----28V Max working current:3A Max power
output:30W
Small power dc brushless sensorless motor driver product photo
Size:L 45mm *W:32mm*H 12mm
JY02A middle-size power DC brushless Hallless motor drive
application schematic
Working voltage:12V----36V Max working current:16A Max power
output:500W(MOS:TO220)
Middle-size power dc brushless sensorless motor driver product
photo
Size:L 63mm *W:42.5mm*H 12mm
JY02A High voltage DC brushless Hallless motor drive application
schematic
Working voltage:80V----265VAC Max working current:1A Max power
output:150W
High voltage DC brushless sensorless motor driver product photo
Size:L 77mm *W:60mm*H 32mm
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Blocking Protection JY02A sensorless Brushless Dc Motor Driver Ic
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