VPS12 SANYO | Alldatasheet

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Technical content

Features

  • High output voltage and wide bandwidth: optimal for use in color monitors in the fH (horizontal deflection frequency) = 90-kHz class (f = 120 MHz –3 dB at V OUT = 40 Vp-p)
  • Package: Molded 15-pin SIP package housing 3 channels in a single package Package Dimensions unit: mm 2127A Wideband Output Module (Video Pack) 93096HA (OT) No. 5309-1/4 [VPS12] SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN CRT Display Video Output Amplifier: High-Voltage, Wideband Amplifier VPS12 Parameter Symbol Conditions Ratings Unit Recommended supply voltage VCC 80 V VBB 10 V Parameter Symbol Conditions Ratings Unit Maximum supply voltage VCC max 90 V VBB max 15 V Allowable power dissipation Pd max At Tc = 25°C with an ideal heat sink 25 W Maximum junction temperature Tj max 150 °C Maximum case temperature Tc max 100 °C Storage temperature Tstg –20 to +110 °C Specifications Absolute Maximum Ratings at Ta = 25°C Parameter Symbol Conditions Ratings Unit min typ max Frequency band (–3 dB) f c VCC = 80 V, VBB = 10 V, CL = 10 pF 120 MHzVIN (DC) = 3.2 V, VOUT (p-p) = 40 V Pulse response tr VCC = 80 V, VBB = 10 V, CL = 10 pF 4.2 ns tf VIN (DC) = 3.2 V, VOUT (p-p) = 40 V 3.2 ns Voltage gain VG (DC) 13 15 17 Times ICC (1) VCC = 80 V, VBB = 10 V, VIN (DC) = 2.9 V, 45 mA Current drain f = 10 MHz clock, CL = 10 pF, VOUT (p-p) = 40 V ICC (2) VCC = 80 V, VBB = 10 V, VIN (DC) = 2.9 V, 70 mAf = 120 MHz clock, CL = 10 pF, VOUT (p-p) = 40 V Electrical Characteristics at Ta = 25°C (for a single channel) Operating Conditions at Ta = 25°C

Internal Equivalent Circuit Test Circuit (for testing a single channel) No. 5309-2/4 VPS12

Since the VPS12 has the three-channel configuration shown in the circuit diagram on page 2, we first consider a single channel. The chip temperatures of the transistors during operation can be determined from the following formula: qj-c (Tri):Thermal resistances of the transistor chips themselves Pc (Tri):Collector loss of the transistors ∆Tc: Increase in case temperature Ta: Ambient temperature The qj-c (Tri) for the individual transistors is: Although the loss in each transistor in the video pack changes with frequency and thus are not identical, assuming a maximum frequency of 120 MHz (clock), the transistor with the largest loss is Tr3 in the emitter-follower stage. From the Pd-f(clock) figure it can be seen that this loss is 22% of the total loss. Thus: Pc (EF stage) Select a qh for the heat sink so that the junction temperature (Tj) of this transistor does not exceed 150°C. Equation (4) gives the relationship between qh and ∆Tc. The required qh can be calculated from this equation and equation (1). No. 5309-3/4 VPS12

VPS12 Thermal Design Example Conditions: fV = 120 MHz (clock) in an fH = 85-kHz class monitor V CC = 80 V, VBB = 10 V, VOUT = 40 Vp-p (CL = 10 pF) Consider using this monitor at Ta = 60°C and operating it at a maximum frequency of f = 120 MHz(clock). As was mentioned previously, the chip with the largest loss is Tr3 in the emitter-follower stage. Deriving that value from the figures below and equation (3) gives: Next, applying the value of qj-c to equation (5) shows ∆Tj to be as follows: Here, ∆Tj is less than 50°C, and in the thermal design we only have to assure that Tc is less than 100°C. That is, we must set qh so that Tc is less than 100°C when Pd (TOTAL) = Pd (one channel) · 3. Here, ∆Tc will be ∆Tc = 100 – 60 = 40°C Since qh = ∆Tc ÷ Pd (TOTAL) = 40 ÷ (5.8 · 3) = 2.3, then qh = 2.3 °C/W. In an actual system, it may be possible to use a heat sink smaller than the one required for the value calculated above due to the actual ambient temperature and other operating conditions. Actual designs should be optimized to match those conditions using the data presented above. No. 5309-4/4 VPS12 VCC (V) VBB (V) VOUT (V) VO (center) 80 10 40 45 This catalog provides information as of September, 1996. Specifications and information herein are subject to change without notice. n No products described or contained herein are intended for use in surgical implants, life-support systems, aerospace equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like, the failure of which may directly or indirectly cause injury, death or property loss. n Anyone purchasing any products described or contained herein for an above-mentioned use shall: À Accept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors and all their officers and employees, jointly and severally, against any and all claims and litigation and all damages, cost and expenses associated with such use: \` Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of their officers and employees jointly or severally. n Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for volume production. SANYO 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.