IR2167 International Rectifier Corp., IR2167 Datasheet

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... Internal Fault Counter End-of-Life Protection Description The IR2167 is a fully integrated, fully protected 600V ballast control IC designed to drive all types of fluorescent lamps. PFC circuitry provides for high PF, low THD and DC Bus regulation. Externally programmable features such as preheat time & fre- quency, ignition ramp characteristics, and running mode operating frequency provide a high degree of flexibility for the ballast design engineer ...

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... IR2167 ( ) S Absolute Maximum Ratings Absolute maximum ratings indicate sustained limits beyond which damage to the device may occur. All voltage param- eters are absolute voltages referenced to COM, all currents are defined positive into any lead. The thermal resistance and power dissipation ratings are measured under board mounted and still air conditions. ...

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... RT pin current consists of the RUN pin current plus the current due to the RT resistor. www.irf.com = 16. 470 pF, RPH and RUN leads no connection 2.0V 1000pF Min. Typ. 10.4 11.4 2.0 2.1 — 250 — 100 1.9 3.3 4.0 5.0 14.0 15.6 IR2167 ( S Min. Max. Units CLAMP V -3.0 600 V V CCUV+ CLAMP Note VCC 220 — ...

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... IR2167 ( ) S Electrical Characteristics (cont 14V +/- 0.25V BIAS 20. 0.5V Floating Supply Characteristics Symbol Definition I Quiescent V supply current QBS0 BS I Offset supply leakage current LK PFC Error Amplifier Characteristics Symbol Definition V VBUS sense input threshold BUS I VBUS sense input bias current VBUS gm Error amplifier transconductance ...

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... Min. Typ. — 0 — CCUV- IR2167 ( S = 0.0V, CPH o C unless otherwise specified. Max. Units Test Conditions — =5V,V =6V RPH RPH Max. Units Test Conditions — RUN Max. Units Test Conditions 5.4 ...

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... IR2167 ( ) S Lead Assignments Pin Assignments VDC CPH RPH VCC 4 17 RUN COM COMP PFC VBUS Pin # Symbol Description 1 VDC DC Bus Sensing Input 2 CPH Preheat Timing Capacitor 3 RPH Preheat Frequency Resistor & Ignition Capacitor 4 RT Oscillator Timing Resistor 5 RUN Run Frequency Resistor ...

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... RUN Mode f Ramps to f MIN RUN CPH Charges to 10V Clamp RPH = Open Circuit RUN = 0V CS 0.2V Threshold Enabled SD 1.0V and 3.0V Thresholds Enabled IR2167 ( ) S VCC < 9.5V (VCC Fault or Power Down) or VDC < 3.0V (dc Bus/ac Line Fault or Power Down > 5.1V (Lamp Fault or Lamp Removal) ...

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... IR2167 ( ) S Functional Block Diagram 3.0V VDC 1 5.1V 1.0uA CPH 2 9.5V 5.1V 4.0V 4.0V RPH 3 2. 2.0V RUN 50uA UNDER- VOLTAGE OC 8 DETECT 7.6V VBUS 11 4. COMP 1.0V 7. OVER- TEMP DETECT 4. PULSE LEVEL HO FILTER & 20 SHIFT LATCH VS 19 VCC ...

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... BALLAST CONTROL SECTION 15.6V UVLO+ UVLO 7.6V 5.1V 4.0V V CPH 2.0V V RPH 2.0V V RUN f START f PREHEAT FREQ f RUN f MIN UVLO www.irf.com TIMING DIAGRAMS NORMAL OPERATION Over-Current Threshold RUN IR2167 ( ) S UVLO 9 ...

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... IR2167 ( ) S 15.6V UVLO+ UVLO 7.6V 5.1V 4.0V V CPH 2.0V V RPH 2.0V V RUN f START FREQ RUN f IGN SD 5. UVLO BALLAST CONTROL SECTION TIMING DIAGRAMS FAULT CONDITION RUN UVLO www.irf.com ...

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... Temperature (°C) SD+ Threshold vs Temperature (IR2167) (Preheat, Ignition) 100 RDT ( RDT (IR2167) DEAD www.irf.com 4 3.5 3 2.5 2 1 100 125 -25 EOL+, EOL- Threshold vs Temperature (IR2167) 200 175 150 125 100 220pF 75 470pF 1nF 50 3.3nF 25 10nF 0 100 -25 t LO, t RISE IR2167 ( S EOL+ EOL ...

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... Temperature (°C) V Threshold vs Temperature (IR2167) BUS RUN 4 V IGN Temperature (°C) VCPH ( , ) vs Temperature (IR2167) IGN RUN 100 125 - CCUV 100 125 -25 VDC+, VDC- vs Temperature (IR2167 CCUV V - CCUV 100 125 Temperature (° Temperature (IR2167) CCUV VDC+ VDC 100 125 Temperature (°C) www.irf.com ...

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... Temperature (°C) ILK vs Temperature (IR2167 10000 100000 Frequency (Hz Frequency (IR2167 =5.6K , CT=220pF DT www.irf.com 1000000 100000 10000 75 100 125 1000 1000000 0 I QBS IR2167 ( CT=220pF, RDT=5.6K CT=470pF, RDT=2.7K CT=1nF, RDT=1.2K 10000 100000 Frequency vs R (IR2167 sec DEAD 125°C 75°C 25°C -25°C ...

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... IR2167 ( ) S 1000000 C T=220pF, R DT=11K C T=470pF, R DT= T=1nF, RD T=3K C T=4. 7nF, RD T=1K C T=10nF, R DT=1K 100000 10000 1000 1000 10000 Frequency vs R (IR2167 10000 100000 Frequency (Hz Frequency (IR2167 DIP) Driving IRF820's, VBUS=400V IC driven by square wave 100000 1000000 www.irf.com ...

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... A, and to guarantee the IC is fully functional before the high side, low side and PFC drivers are activated. Figure 1 shows an efficient supply using the start-up current of the IR2167 together with a charge pump from the ballast stage (R SUPPLY , C VCC , D CP1 and D CP2 ). + V ...

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... IR2167 ( ) S is available over all ballast operating conditions. Bootstrap diode ( and supply capacitor ( comprise the supply voltage for the high-side driver circuitry. To guarantee that the high-side supply is charged up before the first pulse on HO, the first pulse from the output drivers comes from the LO pin ...

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... LC compo- nent tolerances (please note that it is possible to use the IR2167 in systems where fstart > fph > fign > frun, simply by leaving the RUN pin open). The heart of this controller is an oscillator that resembles those found in many popular PWM voltage regulator ICs ...

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... S Figure 6: Input Voltage & Current PF=0.96, THD=22% The approach used in the IR2167 is classified as running in critical conduction mode, in which the inductor current discharges to zero with each switching cycle. There is no need to sense the rectified AC line input voltage because it is already sinusoidal. Therefore, the inductor current will ...

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... ZX pin never goes high and the PFC MOSFET never turns on. The Watch Dog Timer circuit provides a pulse to turn on the PFC MOSFET if no pulse is detected at the ZX pin for 500mS. This enables the PFC circuitry to regulate the DC Bus voltage at its nominal value IR2167 ( S VCC 12 PFC RS3 ...

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... IR2167 ( ) S 4.3 4.0 V 3.0 VBUS 0 6.0 5.1 5.0 DRIVE 4.0 V SIGNALS CPH 2.0 0 6.0 4.0 V COMP 2 COMP RESULTANT SIGNALS 1000 gm (max) 200 0 20 Note 1 Note 1 QUICK POWER START UP MODE MODE Note these regions is the output COMP saturation current of the OTA Error amplifier ...

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... Approximately 2V of hysterisis has been designed into the internal comparator sensing the VDC pin, in order to account for variations in the ac line voltage under varying load conditions. When the ac line recovers, the chip re- starts from the beginning of the control sequence, as shown in timing diagram (See Figure 13). IR2167 ( 0.2V ...

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... IR2167 ( ) S 5 VDC CPH HO-VS RUN mode Low VDC Figure 13: VDC lead fault and auto restart Lamp Presence and End-of-Life Detection The second protection pin, SD, is used for both shutdown and end-of-life detection. The SD pin would normally be con- nected to an external circuit that senses the presence of the lamp(s) and the voltage appearing across the lamp(s) ...

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... CS- threshold of 0.2V which is enabled at the onset of the run mode. The sensing of this CS- threshold is synchronized with the falling edge of the LO output. Figures 17, 18 and 19 are oscillographs of fault conditions. Figure 17 shows a failure of the lamp to strike, Figure 18 shows a hard switching condition and Figure 19 shows an under-current condition. IR2167 ( ...

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... IR2167 ( ) S Figure 17: Failure of lamp to strike Figure 18: Hard switching condition 24 Figure 19: Operation below resonance Figure 20: Auto restart for lamp replacement www.irf.com ...

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... COM at this time. The value should be C SNUBBER chosen so that the desired ignition voltage is reached. The RT pin current and timing capacitor charging current are both approximately The value of this current should be kept between 50 A and 500 A. The value for computed as follows: C And the ignition mode frequency is: IR2167 ( ...

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... IR2167 ( ) S Deadtime is equal to The following graphs, figures 22 and 23, illustrate the relationship between the effective resistance (i.e. the parallel combination of resistors which programs the CT capacitor charging current) and the operating frequency. 150 FREQ (KHz) 100 Figure 22: f OSC vs effective DEAD =2.0 sec) ...

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... The IR2167 is held in preheat until charged to 4.0V. Step 5: Program the ignition mode time The difference in time between the preheat mode and the run mode is the ignition mode. The rate at which the fre- quency changes from preheat to run is determined by exter- nal resistor R RAMP. ...

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... IR2167 ( ) S Component Selection Tips Supply Bypassing and pc Board Layout Rules Component selection and placement on the pc board is ex- tremely important when using power control ICs should be bypassed to COM as close to the IC terminals as pos- sible with a low ESR/ESL capacitor, as shown in Figure 25. (surface C VCC mount) ...

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... Caseoutline www.irf.com 20 Lead SOIC (wide body) IR2167 ( ) S (MS-013AC) 01-3080 00 29 ...

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... IR2167 ( ) S Caseoutline IR WORLD HEADQUARTERS: 233 Kansas St., El Segundo, California 90245 Tel: (310) 252-7105 30 20 Lead PDIP Data and specifications subject to change without notice. (MS-001AD) 01-3079 00 8/19/2002 www.irf.com ...