CCU2350 RENESAS
Document overview
- Manufacturer or author: Jolie Lou
- PDF pages: 12
Technical content
PWM Speed Control for Permanent Excited DC Motors Datasheet Revision 1.1 31-Oct-2019 CFR0011-120-00 1 of 11 © 2019 Dialog Semiconductor General Description The monolithic integrated bipolar circuit CCU2350 is a MOSFET or IGBT-control circuit which works on the principle of pulse width modulation (PMW). The overall concept enables the construction of a power controller with mains voltage compensation where intermittent operation is also possible. In addition, t he circuit also enables mains-voltage compensated current control, which maintains the power supplied at a constant level after the preset threshold has been exceeded.
1.1 Features
Pulse width control up to 30 kHz clock frequency Mains supply compensation Current regulation Temperature monitoring with indicator Active operation indicator Blink-warn indicator Switchable to interval operation Push-pull output stage for separate supply Supply voltage monitoring Temperature compensated supply voltage limitation
1.2 Applications
Domestic equipment, Household appliances, Toys Tools
1.3 Schematic
Figure 1: Block diagram CCU2350
PWM Speed Control for Permanent Excited DC Motors Datasheet Revision 1.1 31-Oct-2019 CFR0011-120-00 2 of 11 © 2019 Dialog Semiconductor Suply voltage limitation Voltage monitoring Output stage logic +VS Push pull stage GND 1,2V/ 1,5V Comparator 2 Comparator 1 Progr logic Q Q S R LED - logic Oscillator 80 % 100% 420 mV 350 mV + VS Multi open Stop Normal Impedance converter red green R10 R12 82kΩ Tristate switch C3 R11 120kΩ220nF R13 NTC 220nF 100 KΩ 680 nF Speed R15 10kΩ R14 47KΩ 10µF/ 35 V 56kΩ / 2 W M BYT86 -800 IGBT R12 10kΩ 0,22 Ω 47 µF/ 350V 22nF 5.6MΩ 180kΩ 220kΩ VM=230V- 120kΩ 7.5kΩ 10nF Figure 2: Block diagram with external circuit
PWM Speed Control for Permanent Excited DC Motors Datasheet Revision 1.1 31-Oct-2019 CFR0011-120-00 3 of 11 © 2019 Dialog Semiconductor
2 Pinout
2.1 Pin Description
Supply, Pin 16 Pin no. Symbol Function
1 LED1 LED output 1
2 LED2 LED output 2
3 n.c. Not connected
4 NTC Monitoring input
5 Progr. Tristate programming
6 Rosc Resistor for oscillator
7 Cosc Capacitor for oscillator
8 Contr. Control input 9 VContr. Voltage regulation input
10 S1 Switching output, output S1
11 IContr. Current regulation input
12 GND Ground
13 OUT- - supply for output stage
14 OUT Output
15 OUT+ + supply for output stage
VContr. IContr. n/c CCA7001 LED1 LED2 Progr. Contr. OUT OUT+ + VS16
PWM Speed Control for Permanent Excited DC Motors Datasheet Revision 1.1 31-Oct-2019 CFR0011-120-00 4 of 11 © 2019 Dialog Semiconductor R1max = The internal voltage limiter in the CCU2350 enables a simple supply from the rectified line voltage. The supply voltage between Pin 16 (+VS) and Pin 12 (ground) is built up via R1 and is smoothed by C7. The typically 5 mA supply current is simultaneously used to operate the two LEDs D2, D3, which can both be bridged internally. The supply current therefore reaches Pin 16 either via LEDs or the internal switches (Vsat < 1.2V). Series resistor, R1, can be calculated as follows: VMmin – VSmax Iout whereas VMmin = Vmains –15 % VSmax = maximum supply voltage Itot = ISmax + Ix ISmax = Max. current consumption of the IC Ix = Current consumption of the external components Here, C6 must be selected in this way that the voltage at C7 (figure 2) is not noticeably affected by the load in any mode of operation. For further Information regarding mains power supply, refer to figures 6 and 7.
2.2 Voltage Monitoring
Whilst the operating voltage is being built up or reduced, uncontrolled output pulses of insufficient amplitude are suppressed by the internal monitoring circuit. The latch is also reset, the LED D 2 (operating indicator) between Pin 2 and Pin 16 is switched off and the control input “Pin 8” is connected to ground via switch S3 and a 1 kΩ resistor. In connection with a switching hysteresis of approximately 2 V, this mode of operation guarantees fail-safe start-up each time the operating voltage is switched on, in the same way as after short mains interruptions. Connecting the control input Pin 8 with a capacitor can therefore make a soft start with rapid recovery possible.
2.3 Pulse Width Control with Mains Voltage Compensation, Pins 8, 9, 10
Average value of the voltage over the load is controlled to an infinitely selectable value by the comparator Comp. 1 with hysteresis. The rectified mains voltage is divided by R3 and R4 and lead in Pin 10. The capacitor C1 is charged via R9 until the voltage V9, which is present at the inventing input of Comp.1, is more positive than the control voltage V8 arriving at the non-inverting input via an impedance converter. During the charge time, which is dependent of the mains voltage, the pulse output is at high potential and the switching output Pin 10 is open. If V9 now becomes greater than V10, the output from Comp. 1 switches over the output stage logic via an AND gate. The output stage logic now brings V14 to low potential and closes the switching output Pin 10. This has the effect of discharging C1 via R9 and the switch S1 until the approximately 300 mV hysteresis of the comparator is completed. The discharge time is dependent on the control voltage V8.
PWM Speed Control for Permanent Excited DC Motors Datasheet Revision 1.1 31-Oct-2019 CFR0011-120-00 5 of 11 © 2019 Dialog Semiconductor Comp. 1 then switches over again an the cycle begins once more (see figure 3). This two- state controller compensates the influence of the mains voltage, with the result that the motor voltage or motor speed is largely determined by magnitude of the control voltage.
2.4 Current Control, Pin 11
If the current flowing through the IGBT (or MOSFET) and the shunt resistor R 8 becomes so high that a voltage higher than 1.5 V arises at Pin 11, a second control loop formed with the comparator Comp. 2 becomes active, and overrides the first control loop via an AND gate. This causes the average value of the current, fed to the motor, to be controlled to a constant value. This in turn results in a speed which decreases greatly with the increasing torque (see figure 4). Figure 3: Pulse width control signal characteristics Speed (of rotation) Imax Torque Figure 4: Influence of current control on the characteristic (curve) of a motor By exceeding the maximum current which is adjustable with R8, the control dependent voltage V8 (shunt characteristic) reaches the dotted lines (series characteristic). By applying a current which depends on the load voltage across R6, the constant value of the current can be further influenced. In addition the current control limits the starting current. In the case of effective current limiting, alteration of the rectified mains voltage has an effect on the power taken up. In order to compensate for this influence, the resistor R 7 is connected to Pin 11. If dimensioned appropriately, the consumed power is independent of changes in the mains voltage within a wide range of this voltage. V14 V10
PWM Speed Control for Permanent Excited DC Motors Datasheet Revision 1.1 31-Oct-2019 CFR0011-120-00 6 of 11 © 2019 Dialog Semiconductor
2.5 Operation Mode Selection, Pin 5
It is possible to program three modes of operation with the tristate input, as follows: a) Intermittent operation (Pin 5 connected to + VS) A signal emitted by an internal oscillator (see figure 5) switches the output stage ON and OFF periodically via S2. This intermittent operation is very suitable for certain uses. b) Stop function (Pin 5 open) The output is continuously switched off, the motor is at reset. c) Normal function (Pin 5 connected to V12) The motor runs continuously.
2.6 Temperature Monitoring, Pin 4
The circuit also has a monitoring input. If a NTC-resistor is connected to this input, for example, it functions as a temperature sensor. If the voltage V4 falls below the first threshold VT80 (approximately 420 mV) as a result of the increasing temperature, an external LED D3, which is connected between Pin 1 and Pin 2, starts to blink. If the temperature increases further and the voltage V4 falls below a second threshold VT100 (approximately 350 mV), a latch is set. The latch makes this LED light up continuously, the output stage is blocked. The motor is switched-OFF and remains switched-OFF until the temperature has fallen and until the mains voltage is switched-OFF and switched-ON again (the latch is solely reset by the voltage monitoring). A second LED D2, which is connected between Pin 2 and Pin 16 and which is continuously illuminated (switch ON) during normal operation, is switched-OFF. In the event of wire breakage in the sensor branch, Pin 4 is pulled up to + VS. After the switch-OFF threshold VTOFF (approximately VS-1.8 V) has been exceeded, the circuit ensures that the latch is set here too. This guarantees safe operation.
3 Absolute Maximum Ratings
Reference point Pin 12, unless otherwise specified. Parameters Symbol Value Unit Supply Current t < 10 µs Pin 16 IS is mA Push-pull output V13 < V14 < V15, V15 < V16, V13 < V12 Output current t < 2 ms IO io 200 mA Signal outputs Input current t < 10 µs II ii mA Input currents Pin 6,8 Pin 10 II 1 mA Input voltages Pin 4,5,7,9,10,11 VI 0 V to V16 Storage temperature range Tstg _ 40 to +125 °C Junction temperature Tj +125 °C Ambient temperature range Tamb _10 to +100
PWM Speed Control for Permanent Excited DC Motors Datasheet Revision 1.1 31-Oct-2019 CFR0011-120-00 7 of 11 © 2019 Dialog Semiconductor Thermal Resistance Parameters Symbol Value Unit Junction ambient DIP16 SO16 on PC board SO16 on ceramic RthJA 120 180 100 K/W K/W K/W
4 Electrical Characteristics
VS = 15.5 V, Tamb = 25°C, reference point Pin 12, figure 2, unless otherwise specified. Parameters Test Conditions/ Pins Symbol Min. Typ. Max. Unit Supply voltage limitation IS = 5 mA IS = 20 mA Pin 16 VS 16 17.2 17.8 V Current consumption IS 3.5 mA Voltage monitoring Pin 16 Switch-on threshold VSON 10 14.0 14.5 V Switch-off threshold VSOFF 12.0 12.5 16 V Control input Pin 8 Input voltage range VI 0 7.5 V Input quiescent current IIB 250 nA Impedance at lower voltage RI 1 kΩ Comparator 1 Pin 9 Input voltage range VIC 0 7.5 V Input quiescent current IIB 250 nA Hysteresis V8 = 1.5 V Pin 8-9 Vhys 320 355 390 mV Delay time Pin 9-14 td 3 µs Switch S1 Pin 10 Leakage current V10 = 15.5 V,V8 = 3 V, V9 = 0 V, V11 = 0 V IR 1 µA Saturation voltage I10 = 2 mA, V8 = 0 V, V9 = 3 V VSat 0.25 V Delay time Pin 10-14 td(r) td(f) µs Comparator 2 Pin 11 Input current II 1 µA Switch-on threshold VTON 1.12 1.20 1.23 V Switch-off threshold VTOFF 1.45 1.50 1.54 V Delay time (output) Pin 11-14 td 3 µs Push-pull stage Pin 14 Saturation voltage High side I14 = _10mA, V15 = V16 Low side I14 = 10mA, V13 = V12 Pin 14-16 VSatH VSatL 2.4 1.2 V Output current limitation V14 = V12, V11 = 0 V, V8 = 3 V, V9 = 0 V, t < 1 µs _IO 75 250 mA V14 = V16, V8 = 0 V, V9 = 3 V, t < 1 µs IO 75 250 mA
PWM Speed Control for Permanent Excited DC Motors Datasheet Revision 1.1 31-Oct-2019 CFR0011-120-00 8 of 11 © 2019 Dialog Semiconductor Parameters Test Conditions/ Pins Symbol Min. Typ. Max. Unit Rise time V15 = V16, V13 = V12, CGate = 1 nF tr 250 ns Fall time CGate = 1 nF tf 600 ns Operating indicator I2 = 5 mA Saturation voltage V16 < VSoffor (V4 < VT100) Pin 2-16 VSat 1.0 V Voltage limitation V16 > VSon , (V4 > VT100) Pin 2-16 Vlimit 6.6 V Overload output I1 = 5 mA Saturation voltage V4 > VT80 Pin 1-2 VSat 1.0 V Voltage limitation V4 < VT80 Pin 1 - 16 Vlimit 8.6 V Temperature monitoring Pin 4 Input current II 500 nA 80%-threshold VT80 390 420 450 mV 100%-threshold VT100 325 350 375 mV Switch-off threshold VTOFF VS – 1.8 V Operation mode selection Pin 5 Voltage Pin 5 open (I5 = 0) V5 VS/2 Input current V5 = V16 II 15 µA V5 = V12 _ II 15 µA Oscillator Input current Pin 6 II 40 µA Source voltage I6 = _ 10µA Pin 6 V6 0.9 V Upper saw tooth threshold Pin 7 VTmax 9 V Lower saw tooth threshold Pin 7 VTmin 1.8 V Oscillator frequency C4 = Cosc = 220 nF, see figure 2 R11 = Rosc = 120 kΩ Pin 7 fosc 1.1 Hz Blink frequency VT100 < V4 < VT80 Pin 1 fblink 2.2 Hz Switching frequency V5 = V16 interval operation Pin 14 fs 1.1 Hz Pulse ratio switch Pin 14 tp/T 0.2 0.23 0.26
PWM Speed Control for Permanent Excited DC Motors Datasheet Revision 1.1 31-Oct-2019 CFR0011-120-00 10 of 11 © 2019 Dialog Semiconductor
5 Revision History
1.1 31-Oct-2019 Updated Template 1.0 30-Jun-2005 Initial version
Contents
PWM Speed Control for Permanent Excited DC Motors Datasheet Revision 1.1 31-Oct-2019 CFR0011-120-00 11 of 11 © 2019 Dialog Semiconductor Disclaimer Information in this document is believed to be accurate and reliable. However, Dialog Semiconductor does not give any representations or warranties, expressed or implied, as to the accuracy or completeness of such information. Dialog Semiconductor furthermore takes no responsibility whatsoever for the content in this document if provided by any information source outside of Dialog Semiconductor. Dialog Semiconductor reserves the right to change without notice the information published in this document, including without limitation the specification and the design of the related semiconductor products, software and applications. Applications, software, and semiconductor products described in this document are for illustrative purposes only. Dialog Semiconductor makes no representation or warranty that such applications, software and semiconductor products will be suitable for the specified use without further testing or modification. Unless otherwise agreed in writing, such testing or modification is the sol e responsibility of the customer and Dialog Semiconductor excludes all liability in this respect. Customer notes that nothing in this document may be construed as a license for customer to use the Dialog Semiconductor products, software and applications referred to in this document. Such license must be separately sought by customer with Dialog Semiconductor. All use of Dialog Semiconductor products, software and applications referred to in this document are subject to Dialog Semiconductor’s Standard Terms and Conditions of Sale, available on the company website (www.dialog-semiconductor.com) unless otherwise stated. Dialog and the Dialog logo are trademarks of Dialog Semiconductor plc or its subsidiaries. All other product or service names are the property of their respective owners. © 2019 Dialog Semiconductor. All rights reserved
TOYOSU FORESIA, 3-2-24 Toyosu, Koto-ku, Tokyo 135-0061, Japan www.renesas.com Contact Information For further information on a product, technology, the most up-to-date version of a document, or your nearest sales office, please visit: www.renesas.com/contact/ Trademarks Renesas and the Renesas logo are trademarks of Renesas Electronics Corporation. All trademarks and registered trademarks are the property of their respective owners. IMPORTANT NOTICE AND DISCLAIMER RENESAS ELECTRONICS CORPORATION AND ITS SUBSIDIARIES (“RENESAS”) PROVIDES TECHNICAL SPECIFICATIONS AND RELIABILITY DATA (INCLUDING DATASHEETS), DESIGN RESOURCES (INCLUDING REFERENCE DESIGNS), APPLICATION OR OTHER DESIGN ADVICE, WEB TOOLS, SAFETY INFORMATION, AND OTHER RESOURCES “AS IS” AND WITH ALL FAULTS, AND DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT OF THIRD PARTY INTELLECTUAL PROPERTY RIGHTS. These resources are intended for developers skilled in the art designing with Renesas products. You are solely responsible for (1) selecting the appropriate products for your application, (2) designing, validating, and testing your application, and (3) ensuring your application meets applicable standards, and any other safety, security, or other requirements. These resources are subject to change without notice. Renesas grants you permission to use these resources only for development of an application that uses Renesas products. Other reproduction or use of these resources is strictly prohibited. No license is granted to any other Renesas intellectual property or to any third party intellectual property. Renesas disclaims responsibility for, and you will fully indemnify Renesas and its representatives against, any claims, damages, costs, losses, or liabilities arising out of your use of these resources. Renesas' products are provided only subject to Renesas' Terms and Conditions of Sale or other applicable terms agreed to in writing. No use of any Renesas resources expands or otherwise alters any applicable warranties or warranty disclaimers for these products. (Rev.1.0 Mar 2020) © 2021 Renesas Electronics Corporation. All rights reserved.