PIP202-12M Datasheet, PDF (13/20 Pages) NXP Semiconductors – DC to DC converter powertrain

Philips Semiconductors
PIP202-12M
DC to DC converter powertrain
12. Test information
Figure 14 shows the test circuit used to measure power loss in the PIP202-12M. The
output voltage is measured using an averaging circuit. This eliminates losses in the
output inductor and the PCB tracks. The calculated power loss, using this method,
includes the losses in the Equivalent Series Resistance (ESR) of the input filter
capacitors. This must be subtracted from the total loss to give the net loss in the
PIP202-12M.
13. Marking
output stage supply
control circuit
supply (12 V)
input voltage
from pulse generator
VI
IDDC
A
IDDO
A
100
nF
VDDC CB VDDO
VI
VO
VSSC VSSO
signal ground
power ground
P_DDO = V_DDO × I_DDO
P_DDC = V_DDC × I_DDC
P_O = V_O(AV) × I_O
P_tot = P_DDO + P_DDC – P_O
Fig 14. Power loss (P_tot) test circuit.
V ^VDDO
500 nH
IO
A
load
averaging
circuit
03ai73
VO(AV)
V
terminal 1
index area
TYPE No.
DIFFUSION LOT No.
MANUFACTURING CODE
COUNTRY OF ORIGIN
03ag38
TYPE No: PIP202-12M-NN (NN is version number)
DIFFUSION LOT No: 7 characters
MANUFACTURING CODE: see Figure 16
COUNTRY OF ORIGIN: Korea
Fig 15. SOT687-1 marking.
Design centre
k = Hazel Grove, UK
Diffusion centre
h = Hazel Grove, UK
hfkYYWWY
Release status code
X = Development Sample
Y = Customer Qualification Sample
blank = Released for Supply
Assembly centre
f = Anam Korea
Date code
YY = last two digits of year
WW = week number
03ai72
Fig 16. Interpretation of manufacturing code.
9397 750 10031
Product data
Rev. 01 — 15 July 2002
© Koninklijke Philips Electronics N.V. 2002. All rights reserved.
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