Ordering number : ENA0003A Monolithic Linear IC LA5663V Phase Control Voltage Inverter Control IC Overview The LA5663V is Phase Control Voltage Inverter Control IC. Functions • Phase control technique allows the voltage transformer to be driven at a frequency that provides excellent efficiency. • The phase can be adjusted with an external resistor. • Allows burst adjustment. • Full complement of built-in protection circuits, including over-voltage protection and tube current detection and protection. • High-precision reference voltage system. VREM precision: ±1% • The on/off state of the VREM circuit can be controlled independent. Specifications Maximum Ratings at Ta = 25°C Parameter Power supply voltage Maximum power drain allowed Symbol Conditions Ratings VCC Pd max Independent IC. Unit 24 V 440 mW Operating temperature range Topr -30 to 85 °C Storage temperature range Tstg -55 to 150 °C Operating Conditions at Ta = 25°C Parameter Symbol Conditions Ratings Unit Input voltage VCC 4.5 to 23 V Oscillation frequency fosc 40 to 500 kHz Burst drive frequency fPWM 50 to 1000 Hz CL1 0 to 1000 pF CL2 0 to 1000 pF Output drive load capacity Any and all SANYO Semiconductor products described or contained herein do not have specifications that can handle applications that require extremely high levels of reliability, such as life-support systems, aircraft's control systems, or other applications whose failure can be reasonably expected to result in serious physical and/or material damage. Consult with your SANYO Semiconductor representative nearest you before usingany SANYO Semiconductor products described or contained herein in such applications. SANYO Semiconductor assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all SANYO Semiconductor products described or contained herein. 83006 / 53006 MS OT / O2505 MS OT B8-7864,B8-7468 No. A0003-1/15 LA5663V Electrical Characteristics at Ta = 25°C, VCC = 15.0V Parameter Symbol Ratings Conditions min Current drain during standby Current drain during operation Regulator voltage Regulator current Vref Reference voltage temperature coefficient Reference voltage current p-channel "H" level "L" level Clamp level 11 14 3.395 3.5 3.605 0.23 -0.3 1.972 Iref = 0.1mA, Ta = 0 to 60°C Iref mA 8 Ireg = 0.5mA, Ta = 0 to 60°C VCC = 4.5 to 23V, Iref = 0 to 0.1mA µA % 2 2 2.028 0.23 0 V mA V % 0.2 mA Voph1 Relative to VCC, load current of 0mA. -0.4 V Voph2 Relative to VCC, load current of 10mA. -1.2 V Vopl1 Relative to GND, load current of 0mA. 1.3 Vopl2 Relative to GND, load current of 10mA. 1.4 V Vopc Relative to VCC -8 V -12 -10 V trp CL = 500pF 150 ns tf tfp CL = 500pF 200 ns "H" level "L" level Clamp level tr tf Burst drive duty Vref (T) 5 tr n-channel output voltage Vreg (T) VCC = 4.5 to 23V, Ireg = 0 to 0.5mA Ireg Reference voltage output voltage Iop VCC = 23V, DTC = 1.229V, CL = 500pF Unit max Ioff Vreg Regulator temperature coefficient typ Vonh1 Relative to VCC, load current of 0mA. -1.5 V Vonh2 Relative to VCC, load current of 10mA. Vonl1 Relative to GND, load current of 0mA. 0.4 V Vonl2 Relative to GND, load current of 10mA. 1.2 V Vopc Relative to VCC trn CL = 500pF tfn CL = 500pF -2 8 V 10 12 V 650 ns 50 ns BRIGHT_VR = 2.2V Duty1 VCC = 4.5 to 23V 100 % BRIGHT_VR = 1.847V Duty2 VCC = 4.5 to 23V 86 90 94 % BRIGHT_VR = 1.229V Duty3 VCC = 4.5 to 23V 47 50 53 % BRIGHT_VR = 0.618V Duty4 VCC = 4.5 to 23V 7 10 13 % VCC = 4.5 to 23V 0 % BRIGHT_VR = 0.4V Duty5 Burst drive duty BRIGHT_VR = 2.2V Duty1 (T) Ta = 0 to 60°C 0 % temperature BRIGHT_VR = 1.847V Duty2 (T) Ta = 0 to 60°C 2 % BRIGHT_VR = 1.229V Duty3 (T) Ta = 0 to 60°C 2 % BRIGHT_VR = 0.618V Duty4 (T) Ta = 0 to 60°C 2 % BRIGHT_VR = 0.4V Duty5 (T) Ta = 0 to 60°C 0 fosc1 capacity = ±1% 247 258 269 195 202 209 coefficient Oscillation fmax % kHz frequency fmin fosc2 capacity = ±1% Oscillation fmax (T) fosc1 (T) Ta = 0 to 60°C 1.3 % frequency fmin (T) fosc2 (T) Ta = 0 to 60°C 1.3 % kHz temperature coefficient Burst drive frequency fosc1 capacity = ±1% Burst drive frequency temperature coefficient fosc1 Ta = 0 to 60°C Remote voltage During operation Vremon Stopped Vremoff OP1 output 191 202 213 0.64 % 2 V 0.7 -VCON1 VCC = 22V 0.27 0.32 0.37 -VCON2 VCC = 7V 1.557 1.6 1.643 -VCON_SINK -VCOM sink current -VCON_SOUR -VCOM source current Hz 100 V V V µA 10 µA DTC-100% ON threshold voltage V100 2.16 2.2 2.24 V DTC-100% OFF threshold voltage V0 0.392 0.4 0.408 V 0.7 1 1.5 s 0.23 0.26 0.29 V SCP Operation start time Threshold voltage tscp SCP (DET_CR) SCP capacity = 0.33µF Continued on next page. No.A0003-2/15 LA5663V Continued from preceding page. Parameter Symbol Ratings Conditions min typ Unit max Input pin Input current of V_PHASE pin Input current of BRIGHT_VR pin Current of DTC IVPHASE -0.2 0.2 µA IBRIGHT_VR -0.2 0.2 µA IVPHASE -0.2 0.2 µA Package Dimensions unit: mm 3175C 7.8 0.5 5.6 13 7.6 24 12 1 0.15 0.65 0.1 (1.3) 0.22 1.5max (0.33) SANYO : SSOP24(275mil) Pin Assignment No.A0003-3/15 LA5663V Block Diagram and Application Circuit Example No.A0003-4/15 LA5663V Pin Functions Pin No. 1 Pin name VREM Function Equivalent circuit ON/OFF terminal of the IC. 2 SGND Signal Ground terminal. 3 IFB CCFL electric current waveform input terminal. 4 DET_CR Rectification (pulse way) waveform of CCFL output terminal. 5 VLOOP_C Error amplifier output terminal. 6 RECT_C Phase difference output terminal 7 V_PHASE Phase difference setup terminal Continued on next page. No.A0003-5/15 LA5663V Continued from preceding page. Pin No. Pin name 8 FLOOP_C 9 C_PWM Function Equivalent circuit VCO input terminal. Capacitor terminal for the burst drive frequency setup. 10 R_PWM Resistance terminal for the burst drive frequency setup. 11 BRIGHT_VR 12 OVP Burst width set up terminal. Detection input terminal of over voltage protection circuit. Continued on next page. No.A0003-6/15 LA5663V Continued from preceding page. Pin No. Pin name Function 13 N_GATE1 NchMOS drive terminal. 14 N_GATE2 NchMOS drive terminal. 15 PGND Power ground terminal. 16 P_GATE PchMOS drive terminal. 17 VCC Power supply terminal. 18 -VCON Equivalent circuit Output voltage is inversely proportional to VCC. 19 SCP Time constant of short protection circuit setup terminal. Continued on next page. No.A0003-7/15 LA5663V Continued from preceding page. Pin No. Pin name 20 DTC 21 C_OSC Function Equivalent circuit Dead time setup terminal. Capacitor terminal for the VCO frequency setup. 22 R_OSC Resistance terminal for the VCO frequency setup. 23 VREF Standard voltage output terminal. 24 VREG Regulator voltage output terminal. No.A0003-8/15 LA5663V Functional Descriptions (1) IFB and DET_CR pins The IFB pin connects the CCFL current waveform detected by R10 to the Q4 base with bias VBE. The DET_CR pin output level depends on both the Q4 base voltage less the VF component and the time constant determined by C4 and R2. These connections rectify the AC CCFL current waveform (VAC) for input to the negative side of the ERROR amplifier. (2) VLOOP_C and PGATE pins The PWM waveform output from the P_GATE pin is the result of the PWM1 amplifier comparing the VLOOP_C voltage and the VOC triangular wave so that the rectified CCFL current waveform from the DET_CR pin has the same potential (0.5V) as the positive side of the ERROR amplifier. This PWM control ensures that the CCFL current remains constant. No.A0003-9/15 LA5663V (3) RECT_C pin COMP1 rectifies the CCFL current waveform, plus bias VBE, from the IFB pin. ANDing this waveform voltage with that from point A (this latter has the same phase as NGATE2) averages the two, producing phase difference voltage output from the RECT_C pin. (4) V_PHASE and FLOOP_C pins COMP2 controls the VCO frequency so that the RECT_C and V_PHASE pins have the same voltage. The RECT_C pin voltage represents a phase difference voltage, so changing the V_PHASE pin voltage adjusts the phase difference. * The above graph is based on measurements for the IC in isolation. Actual phase difference adjustment requires connection to the piezoelectric transformer. No.A0003-10/15 LA5663V (5) C_OSC and R_OSC pins These inputs determine the VCO oscillation frequency. Use R_OSC to change the basic frequency. (6) C_PWM, R_PWM, and BRIGHT_VR pins These inputs determine the burst drive frequency. Use the BRIGHT_VR pin voltage to change the burst width and R_PWM to change the burst drive frequency. * The above graph is based on measurements for the independent IC. No.A0003-11/15 LA5663V (7) –VCON and DTC pins The –VCON pin output voltage is inversely proportional to VCC. Using this output to create the DTC pin input voltage specifies a maximum duty dependent on VCC. On the other hand, connecting this output to the V_PHASE pin input via the resistances R14 and R15 specifies a phase setting dependent on VCC. (Eliminate resistances R14 and R15 if such a VCC-dependent phase setting is not necessary.) * The Specifications stipulate OP1 output electrical characteristics for the –VCON pin. -VCON = VREF × (1 + R2A R2A ) - (VCC - Vsat) × ( ) R1A R1A No.A0003-12/15 LA5663V (8) N_GATE1 and N_GATE2 pins These pins drive the n-channel MOSFET. The frequency is 1/4 the VCO frequency. (9) VREM pin This input turns the IC on and off. Turning the IC off reduces the current drain to 5µA or less. No.A0003-13/15 LA5663V (10) OVP This is the over-voltage detection terminal. An OVP terminal gains a voltage that is divided by resistances. It works with threshold voltage 2V. It becomes the condition of the table at the time of the movement. Terminal Condition P_GATE Hi VLOOP_C Low FLOOP_C Low N_GATE1, 2 Drive And once over-voltage protection works, it doesn't revert soon even if OVP is lower than 2V again. It reverts after fixed time (the period of C_PWM) passes. (11) SCP CCFL electric current decrease by the CCFL opening and so on. And a charge begins in the condenser connected to SCP when the voltage of DET_CR was less than 0.26V. Latch is set when the voltage of the condenser is more than 2V. The voltage of each terminal at this time becomes a table. The charge of the condenser is stopped in the burst Duty again at the time of off period. Terminal Condition P_GATE Hi VLOOP_C Low FLOOP_C Low N_GATE1, 2 Low tscp = 3.03×106×C14×(100/burst duty) [S] Example: tscp = 1 [S] (At C14 = 0.33µF, burst duty = 100%) No.A0003-14/15 LA5663V (12) The polarity of the piezoelectric transformer You must put logic with the transformer together, because a phase is controlled by comparing the common mode wave shape of N_GATE2 with the common mode wave shape of CCFL electric current. Connect a piezoelectric transformer so that each wave shape may become relations like a figure. Specifications of any and all SANYO Semiconductor products described or contained herein stipulate the performance, characteristics, and functions of the described products in the independent state, and are not guarantees of the performance, characteristics, and functions of the described products as mounted in the customer's products or equipment. To verify symptoms and states that cannot be evaluated in an independent device, the customer should always evaluate and test devices mounted in the customer's products or equipment. SANYO Semiconductor Co., Ltd. strives to supply high-quality high-reliability products. However, any and all semiconductor products fail with some probability. It is possible that these probabilistic failures could give rise to accidents or events that could endanger human lives, that could give rise to smoke or fire, or that could cause damage to other property. When designing equipment, adopt safety measures so that these kinds of accidents or events cannot occur. Such measures include but are not limited to protective circuits and error prevention circuits for safe design, redundant design, and structural design. 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Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. SANYO Semiconductor believes information herein is accurate and reliable, but no guarantees are made or implied regarding its use or any infringements of intellectual property rights or other rights of third parties. This catalog provides information as of May, 2006. Specifications and information herein are subject to change without notice. PS No.A0003-15/15