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PJ494CS Datasheet(PDF) 3 Page - List of Unclassifed Manufacturers |
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PJ494CS Datasheet(HTML) 3 Page - List of Unclassifed Manufacturers |
3 / 11 page PJ494 Switchmode Pulse Width Modulation Control Circuit 3-11 2002/11.rev.A DEAD-TIME CONTROL SECTIONDead-time control-section (See Figure 11) Value Parameter Test Conditions Min Typ* Max Unit Input bias current (pin 4) VI=0 to 5.25V -- -2.0 -10 µA Maximum duty cycle, each output VI(pin 4)=0,CT=0.1µF,RT=12KΩ -- 45 50 % Zero duty cycle -- 3.0 3.3 Input threshold voltage(pin 4) Maximum duty cycle 0 -- -- V PWM COMPARATOR SECTION (See Figure11) Value Parameter Test Conditions Min Typ* Max Unit Input threshold voltage (pin 3) Zero duty cycle -- 4.0 4.5 V Input sink current (pin 3) V(pin 3)=0.7V 0.3 0.7 -- mA TOTAL DEVICE Value Parameter Test Conditions Min Typ* Max Unit Vcc=15V -- 6.0 10 Standby supply current Pin 6 at Vref, all other inputs and outputs open Vcc=40V -- 9.0 15 Average supply current VI(PIN4)=2V, See Figure 1 -- 7.5 -- mA SWITCHING CHARACTERISTICS, TA=25℃ Value Parameter Test Conditions Min Typ* Max Unit Output voltage rise time -- 100 200 Output voltage fall time Common-emitter configuration, See Figure 3 -- 25 100 Output voltage rise time -- 100 200 Output voltage fall time Emitter-follower configuration, See Figure 4 -- 40 100 ns UNDERVOLTAGE LOCKOUT SECTION Value Parameter Test Conditions Min Typ* Max Unit Turn-on Threshold Vcc increasing Iref =1.0mA 5.5 6.43 7.0 V All typical value except for temperature coefficient are at TA=25℃ For conditions shown as MIN or MAX, use the appropriate value specified under recommended operating conditions. All typical values except for parameter changes with temperature are at TA=25℃ Duration of the short-circuit should not exceed one second Standard deviation is a measure of the statistical distribution about the mean as derived from the formula 2 1 1 2 1 ) ( − − = ∑ = N n n N x x σ Temperature coefficient of timing capacitor and timing resistor not taken into account |
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