Test Procedure for the NCP1362 HV

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Test Procedure for the NCP1362 HV

Evaluation Board

(2)

Board Electrical Schematic

Ac input voltage

Dc output voltage

VCC R29

240k

SOIC8

R31 NTC

f ault

R11 15V/SOD323 C6

2u2 D6

P6SMB120AT3G DO-214AA

D1 MURA230T3G

C14 1n

0

0 Bulk/2

Vcc

DRV + C4

10u/400V

C21 100n / X2

R39 1M R17

470k

R40 2M2

C16 22pF D5

18V

COUT1 470u/16V DB1

MDB10SS-Micro DIP + 1

- 2 3 AC2

4 AC1

R18 47k C3

100n / X2

RS1 1.3 R6 0

CS

RS2 3 R41

NC

M2

FQU2N100TU-IPAK

R37 3M3 R8

5R

COUT3 47uF

Comp

0

Bulk

Gate

v s_zcd Aux

C10 1nF

C19 0R

R30 1k2

IC1

NCP1362 VS/ZCD 1

FB 2

FAULT 3 4 CS

DRV 5 GND 6 VCC 7 BO/LFF 8

C7 100pF / Y 1 CM1

2.2mH 1

2 3

4

R15 470k ph1

ph2

R38 470k

0

Vcc

DRV

Bulk/2 R33

470k

R14 470k

COUT2 470u/16V L1 220uH

+ C18 10u/400V

R28 82k J1

PM5.08/2 1 2

R24 4k3

R16 10R

R25 3M3 C2

100pF/250V

R19 3M3 R10

0R

C12 4n7

D4 MMSD4148T1 v p

C15 100nF +

C17 10u/400V

0

0 AC

ISense

Vcc

T1 XFMR_PSR 4

1

9

6 2

3 5

8

7 R9

47k

C9 4.7pF

R4 47k

L2 1uH +

C5 10u/400V

D3 BAS21

C11 4u7 R34

470k

D2 US1MFA

0

ROUT1 0

0

Aux

Source

ISense DRV

GND

R22 10k

J2 PM5.08/2 1 2

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Board Picture

Live parts, lethal voltages Isolated output

Input voltage from 85 V rms to 500 V rms Output voltage is 12 V

Nominal current is 1.0 A

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Needed Equipment

 The needed equipements are the following:

An ac source (85 to 500 V rms, 60 / 50 Hz), needed power is below 30 W

An input ac watt-meter, up to 30 W and 530 V rms

A dc load with Constant Resistance mode absorbing up to 30 V, V _in(max) < 30 V, I _out(max) < 2 A

Usually, dc electronic load can display dc V and dc A. If not, an voltmeter and ampmeter will be needed

 If the load does not use local Kelvin sensors, then the output voltage must be

measured at the board level, not at the cable ends.

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Connecting the Board for Testing

Ac source 85 to 500 V rms

Watt-meter Input power

Electronic load

in CR mode

19 V

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Test n°1: No-load Standby

Apply the input voltage 140 V rms to J1 connector

Electronic load is disconnected

Check that output voltage is around 14 V (15 V max)

Verify that input power is below 30 mW

Apply the input voltage to 425 V rms

Input power must be below 150 mW

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Test n°2: Nominal Power

Apply the input voltage 140 V rms to J1 connector

Connect electronic load (in CR mode) to J2 connector

Load is set to 12 Ω

Check that output voltage is 12.1 V (±5%)

Verify that input power is: 14 W < P _in < 16 W

Apply the input voltage to 425 V rms

Repeat above steps

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Test n°3: Constant Current Regulation – 140 V rms

Apply the input voltage 140 V rms to J1 connector

Connect electronic load (in CR mode) to J2 connector

Load is set to 9.2 Ω

Check that output voltage is 10 V

Check that output current is around 1.1 A

Load is set to 7.2 Ω

Check that output voltage is 8 V

Check that output current is around 1.1 A

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Test n°4: Constant Current Regulation – 425 V rms

Apply the input voltage 425 V rms to J1 connector

Connect electronic load (in CR mode) to J2 connector

Load is set to 8.8 Ω

Check that output voltage is 10 V

Check that output current is around 1.15 A

Load is set to 6.9 Ω

Check that output voltage is 8 V

Check that output current is around 1.17 A

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Test Procedure for the NCP1362 HV