PDF IES5521A Data sheet ( Hoja de datos )

Número de pieza	IES5521A
Descripción	Simple Zero Crossing Triac Control Circuit
Fabricantes	IES
Logotipo
Hay una vista previa y un enlace de descarga de IES5521A (archivo pdf) en la parte inferior de esta página. Total 10 Páginas
No Preview Available ! Integrated Electronic Solutions abbing IC’s fo 35Years IES5521A Simple Zero-Crossing Triac Control Circuit with Adjustable Time-out 1 FEATURES 3 GENERAL DESCRIPTION • Time-out function stops triac operation after a set time. The IES5521A is a derivative of the OM1654A, but offering • Reset time-out by turning mains supply off and on. • Low external component count the extra safety feature of a nominal 1 hour time-out. This is a key safety requirement for a range of personal and home appliance applications. The time-out function will • Constant ON cycle time, with proportional OFF time stop the triac operation and thus prevent power from being • All ON cycles consist of an integral number of mains applied to the heating elements. cycles • No DC component in the mains supply m• On chip circuit protection against triac gate spikes • Low supply current requirement o• Sensor AC powered, thus minimising DC supply and .cfiltering needs • Separate power supply input, allowing easy gate pulse width adjustment U• Accurate time-out using the mains frequency, or widely t4adjustable external “RC” time-out. e2 TYPICAL APPLICATIONS e• Temperature control of cooking or heating appliances. h• Hair styling tools (straighteners, driers, curling wands ..) • Electric Irons S• Toaster Ovens, Rice Cookers, Hotplates, Fry Pans, etc. ta• Electric Blankets, Heating Pads, etc. • or other appliances where a safety time-out is required. a4 BLOCK DIAGRAM Time-out can be accurately controlled from the AC supply frequency for a period of 1 hour (60Hz, or 71minutes at 50Hz), or can be adjusted by adding external resistor and capacitor components to set the frequency of an on-chip RC oscillator. In this manner, time-out periods from 1 minute to more than 5 hours, are possible. The IES5521A is a monolithic bipolar control circuit for zero-crossing triggering of a triac in applications where it is controlled by a resistive sensor such as an NTC thermistor. In a typical application it can be used for the temperature control of a heating element in a cooker or another home heating appliance. It is designed to control a suitable triac with a resistive load ranging from 400 watts on a nominal 220/250 volt mains supply. It can also be easily applied to 120Vac mains applications. .D Neutral wNTC 100k ww@25°C Rb θ RV1 100k SENS 4 latch zero crossing control logic GATE 2 Vcc 3 stabalised 8 AC 330k Rc 0.25W 7 PWR Rd* 100k 0.6W Triac BT134-600E Load C2 47uF 10V IES5521A 6 Ra CAP C1 100nF 2005 Dec 12 time-out timer 5 RC Rtc C3 −6.5V * If required Fig.1 Block diagram 1 DC supply 6.5V .com1 Vee heet4UIES5521A-block cct3 230Vac mains Active www.DataSProduct Specification 1 page Integrated Electronic Solutions abbing IC’s fo 35Years IES5521A Simple Zero-Crossing Triac Control Circuit with Adjustable Time-out 8 CHARACTERISTICS At Tamb = 25°C; Voltages are specified with respect to pin 3 (VCC) SYMBOL PARAMETER CONDITIONS Power supply −VEE −IEE supply voltage (operating) supply current (operating) excluding gate drive. 470kΩ pull-up on RC. Gate drive IGATE gate current (triac T1 to VCC) VGATE = VCC Zero crossing detection IAC +ve threshold −VAC −ve threshold Timing capacitor −ICAP discharge current −VUT upper threshold −VLT lower threshold ICAP charge current Sense input (Figure 4) ISENS = −20 µA −VSENS sense voltage −VSENS sense voltage −∆VSENS/ oC temperature sensitivity VSENS(rms) AC sense voltage VSENS(rms) AC sense voltage VSENS(rms) VSENS(rms) VSENS(rms) VSENS(rms) AC sense voltage AC sense voltage AC sense voltage AC sense voltage RC input (Figure 6) ISENS = −20 µA duty cycle = 50% Duty cycle = 5% Duty cycle = 25% Duty cycle = 50% Duty cycle = 75% Duty cycle = 95% Duty cycle = 100% −IRC −VRCTU −VRCTL fOSC tTO charging current RC threshold - upper RC threshold - lower oscillator frequency time-out time, IES5521A At RC pin R4=470k, C3=100nF R4=470k, C3=100nF Mains Frequency Timing (R4=470k, Figure 5) tTO time-out time, IES5521A fMAINS = 60Hz fMAINS = 50Hz MIN 6.3 − 10 − − − − − − − − − − − − − − − − − 0.4 − − 3550 4260 TYP MAX UNIT 6.9 7.6 V µA 210 270 12.5 - mA 66 − µA −6.4 − V 1 1100 VEE+1100 150 2.2 µA − mV − mV − µA 1000 575 2.2 0.47 0.48 0.50 0.53 0.65 0.73 − mV − mV − mV/oC − V(rms) − V(rms) − V(rms) − V(rms) − V(rms) − V(rms) 340 2.4 0.6 15.42 3454 810 µA 3.0 V −V − Hz −s − 3550 s − 4260 s 2005 Dec 12 5 Product Specification 5 Page

Páginas	Total 10 Páginas
PDF Descargar	[ Datasheet IES5521A.PDF ]

Hoja de datos destacado

Número de pieza	Descripción	Fabricantes
IES5521A	Simple Zero Crossing Triac Control Circuit	IES

Número de pieza	Descripción	Fabricantes
SLA6805M	High Voltage 3 phase Motor Driver IC.	Sanken
SDC1742	12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters.	Analog Devices

DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares,
permitiéndote verlos en linea o descargarlos en PDF.

DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar