PS222S データシートの表示（PDF） - Unspecified
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PS222S Datasheet PDF : 13 Pages
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PS222S
Notes:
1. Zener diode or resistor or both of them can be used in component X.
2. The bypass capacitor Cby suggests to be 0.1uF~ 10uF and layout nearby pin VCC.
3. The recommend sense values of RS12(1), RS12(2), RS5 and RS33 are ≥ 0.002Ω.
4. Over-Current Protection design example:
(1)
I ref
=
20μA , RI
= VRI
I RI
=
1.25
20μ
=
62.5K
(Ω)
(2) RS5=0.002 Ω , ΔV5V = 0.002 × I+5V = ROC5 × 8 × Iref
(3)
If +5V OCP trip point is 20A,
ROC 5
=
0.002 × 20
8 × 20μ
=
250(Ω)
5. GND path:
(1) The GND path width is wider as far as it could.
(2) The better grounding ability has better performance at surge test.
6. PS222S uses only one 12VOCP protection function:
As “Typical 3 rails SPS” application circuit, the pin7(ISx) must be connected one
resistor(Resistance>10kΩ or floating) to GND.
3-Channel Secondary Monitoring IC
Version：A.003
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