Volts Volts. Pout < 4.0W (See Fig 8/9) Pout < 11.5W (See Fig 8/9) EnablePin Threshold uamps In to/out of enable pin: Venable = 0-16V

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1 Specifications: 363/36 Rev: G Description: The 363/36 series high voltage power supplies are miniature flyback boost converters operating from 2 to 6VDC input, with an output of 50 to 200VDC set by a single resistor to ground. An enable pin allows the module to be controlled by a logic signal from.20 to Vin volts, drawing only 0uA in shut down. Table : Electrical Specifications Specification Min Typ Max Units Notes Input voltage Volts Absolute Max, Survivability Volts Volts Pout <.0W (See Fig 8/9) Pout <.5W (See Fig 8/9) EnablePin Threshold Volts Module off Volts Module on, Ven-max = Vin EnablePin Current uamps In to/out of enable pin: Venable = 0-6V Shutdown current uamps Into module: Vin=6V, Ven=0V, T amb +85C Open Ohms For 200V-50V respectively HV output Volts Short () < Radj < Open, +/-5% Efficiency % At 50-00% rated load, 5-6VDC in Notes:. connected to ground; Ground=2uA / Open=.2V / Zin=30.K. 2. No input reverse polarity protection is provided. 3. Short circuit protected via pulse-pulse current limiting.. Bias output may not be loaded at any time, for module testing only. Fig. 363 and 36 modules

2 Specifications: 363/36 2 Recommended Layout (Vertical mounting) 0.070" Pad/ 0.02" hole 3 places N/C +H +HV 2 OUT N/C " Transformer side x " Pad/ 0.02" hole 9 places Top View V BIAS R 7 ADJUST V 5 BIAS 3 +V 2 IN 8 6 Bottom View 0.25" 0.325" Bottom " Transformer side 0.225" +/ " Transformer side Top Fig module outline and recommended PCB layout

3 Specifications: 363/ " 0.900" 0.075" 0.75" 0.275" 0.675" 0.50" top side ground clearance place Square Pins 7 Places 0.070" Pad / 0.02" hole 5 places Underside of module is ground 0.080" Pad / 0.02" hole 2 places 0.050" E6 E2 E3 E V BIAS E5 E Top E7 Transformer Side 0.075" 0.75" top side ground clearance places 0.775" 0.950" 0.350" 0.062" 0.200" Fig module outline and recommended PCB layout

4 Specifications: 363/36 DC in 330uF / 6V EEU-FCC33 (Recommended input capacitor if the module is located far from the main system filtering. Not required for most applications.) VIN H 6 V BIAS N/C 7 2.2V to V R IN ADJUST 5 3 RADJUST VDC out V RADJUST = 0 to 5.5V Fig. Typical connection (36 pin numbering shown) Vset H 0V Undefined operation Vin V.20V 0.5V 0V 0-0.5V = Shutdown.20-Vin = Enabled Shutdown current is 0uA 6V in Fig 5. Enable function Fig 6a: V RADJUST = 0V ( -.2 (kohms) = V ) OUT The value of can range from open to short-to-ground for 50V to 200V output respectively. Example, For 70V out: = 8.9K to ground Using standard 5% resistor values: 7K=70.V, 5K=69.5V Fig 6b: V RADJUST >= 0V ( V RADJUST -.2 (kohms) = -.2) The value of can range from open to short-to-v RADJUST. Example, For 25V out with V RADJUST =5V: =.38K to ground Using standard 5% resistor values: 0K=2.32V, 50K=25.8V Fig 6. calculations See:

5 Specifications: 363/36 5 a) Always-on operation b) with switch close c) with switch open d) with open drain e) with open collector Current Current f) with opto coupler g) with opto coupler 2-5.5V (Typ) 2-5.5V (Typ) Vdd uprocessor (i.e. PIC) RB0 Vdd uprocessor (i.e. PIC) RB0 h) uprocessor control i) uprocessor control with optional off-at-boot pull down resistor Fig 7. Examples of alternative enable connections

6 Specifications: 363/36 6 P OUT - Watts V SOA Volts Fig 8. P OUT vs I OUT - mamps V 70V 200V Volts Fig 9. I OUT vs vs

7 Specifications: 363/36 7 Conductive materials, such as metallic housings, heat sinks or your finger can couple energy out of the transformer resulting in poor efficiency and audible ringing. The underside of the transformer is isolated from the PWB ground by an insulating plastic mount and the thinness and discontinuities of the underlying copper limit eddy currents there.. Leakage flux from the core in the H field cut through conductive materials perpendicular to the axis of the core post generating circulating eddy currents that are reflected back into the primary. These shorted turns can draw amps of current and grow worse as the conductivity (Rho and thickness) of the material increases. This effect will also increase as the distance from the core to the conductor decreases. 2. Capacitive coupling from the secondary output end which is at the core center (to limit coupling to the primary) presents an AC short to this end of the secondary which has a high AC peak to peak amplitude. This effect gets worse as the grounding of the material improves and the distance is decreased. PWB Circulating currents Shorted Turns 0V Conductive material Insulated core mount AC DC If heat sinking is desired, Gap-Pad from Bergquist serves as a very thermally conductive, electrically insulating and gap filling solution that avoids the efficiency stealing issues above. It is available from distributors such as Digikey in a variety of thickness, softness and mounting options. GP is a good compromise between cost, thermal efficiency and softness, the 0.25" thickness providing for an easy application. This can be ordered on the power supply page in " squares (Enough for four power supplies). Note that heat sinking is not generally required where the power supply has convective air currents and may operate up to 05C. Fig 0. Transformer proximity cautions

8 Specifications: 363/36 8 Revision History Revision Description - Initial release. A Updated 363 and 36 individual datasheets. B Combined 363 and 36. Added Enable pin functional description. Simplified Radjust calculation. C Added Fig. 7 to show various ways to enable the module. Clarified meaning of enable and disable currents in spec table. D Added Fig. 8/9 output power and current graphs E Changed Fig. 6 adjustment resistor from 56K to 5K to use standard 5% values just above and below calculated value. Changed Table enable threshold note to indicate maximum enable voltage is equal to Vin. F General cleanup and addition of formula to Fig. 6 for V RADJUST bias voltages other than ground to allow setting the voltage to less than 50V. G Added note to Fig. indicating numbering is for 36 module. Added Fig. 0 showing transformer proximity cautions.