EV1531B R0.3 EN 20170619 - joulwatt.com · BUCK CC/CV Driver Without Auxiliary Winding ®...

Parameters Subject to ChangeParameters Subject to ChangeParameters Subject to ChangeParameters Subject to Change Without NoticeWithout NoticeWithout NoticeWithout Notice

EV1531B JoulWatt

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FEATURES

� No auxiliary winding

� Supplied from line voltage directly

� High current accuracy of line and load

regulation

� Low output voltage ripple

� Critical conduction mode

� High efficiency over wide operating range

� Cycle-by-cycle current limit

� Short Circuit Protection

� Internal over-temperature protection

� SOP7 package

APPLICATIONS

� AC/DC Power Adapter

EVALUATION BOARD

BUCK CC/CV DriverWithout Auxiliary WindingWithout NoticeWithout NoticeWithout NoticeWithout Notice

JoulWatt® Proprietary Information Patent Protected.

Unauthorized Photocopy and Duplication Prohibited.

Supplied from line voltage directly

High current accuracy of line and load

wide operating range

temperature protection

DESCRIPTION

The JW®1531B is a constant

current driver with high accuracy.

JW1531B integrates high voltage power source,

and can be supplied from

and auxiliary winding is not needed

simplifies the system.

Low standby consumption

deep pulse frequency modulation.

conduction mode operation reduces the switching

losses and largely increases the efficiency.

JW1531B has multi-protection functions which

largely enhance the safety and reliability of the

system, including VCC over

VCC UVLO, short

pulse-by-pulse current limit and

protection.

EV1531B BUCK CC/CV Driver Auxiliary Winding

1

1531B is a constant voltage constant

with high accuracy.

JW1531B integrates high voltage power source,

from line voltage directly,

and auxiliary winding is not needed, which largely

consumption can be achieved with

deep pulse frequency modulation. Critical

onduction mode operation reduces the switching

losses and largely increases the efficiency.

protection functions which

largely enhance the safety and reliability of the

system, including VCC over-voltage protection,

circuit protection,

limit and over-temperature

EV1531B JoulWatt

EV1531B JoulWatt® Proprietary Information Patent Protected. 2


ELECTRICAL SPECIFICATIONS

Description Symbol Min Typ. Max Unit Comment

Input

Input voltage VIN 90 264 V 2 wire

Frequency fLINE 47 50/60 63 Hz

No Load Consumption (220VAC)

0.2 W

Output

Output voltage VOUT 4.90 5.0 6.10 V

Output current IOUT 450 mA

Output Ripple Voltage VRIPPLE 100 mV Set oscilloscope at 20MHz bandwidth

Total Output Power

Continuous Output Power

POUT 2.25 W

Over current Protection

IOCP 0.5 A

Efficiency η 60 %

Environmental

Conducted EMI Meets EN55022B

Ambient Temperature Ta -25 +45 ℃

EV1531B JoulWatt



SCHEMATIC

BILL OF MATERIALS

Quantity Designator Comment Description Footprint Manufacturer Manufacturer

P/N

1 BD1 600V/1A BM10F

1 C2 1nF/16V/0603 0603C

1 C3 1uF/25V/0805 0805C

1 C4 47pF/16V/060

3

0603C

1 C5 100pF/500V/1

206

1206C

1 CE1 1uF/400V CAP-6.3

1 CE2 2.2uF/400V CAP-6.3

1 CE3 470uF/10V CAP-6

1 D1 ES2J SMA

1 F1 250V/1A 1A Fuse FU2

1 L1 3mH(6*8) L-6*8-3

1 L2 (EE10)320uH/

0.28mm*115T

EE10-4+4

1 R1 51K/1%/1206 1206R

EV1531B JoulWatt



1 R2 18K/1%/0603 0603R

1 R3 20R/5%/1206 1206R

1 R4 510R/5%/1206 1206R

1 RL1 5.1K/5%/0805 0805R

2 RS1,RS2 0.4R/1%/1206 0805R

1 U1 JW1531B BUCK CC/CV

Driver

SOP7 Joulwatt

1 VR1 7D471 7D471-3

EV1531B

EV1531B JoulWatt

Unauthorized Photocopy and

PRINTED CIRCUIT BOARD LAYEROUT

Figure1————Top Silk Layer

Figure3————Bottom Silk

QUICK START

1. Connect the load with Vo+, Vo

2. Set the AC source to 90V ~

3. Connect the “Line” of AC source to the “L”, and “neutral” to “N”.

4. Turn on the AC source; the evaluation board starts operating in normal condition.

5. To get more information, please refer to the datasheet of

JoulWatt® Proprietary Information Patent Protected.


PRINTED CIRCUIT BOARD LAYEROUT

Top Silk Layer Figure2————Top

Silk Layer Figure4————Bottom

Vo+, Vo-.

V ~264V, turn off the source.

Connect the “Line” of AC source to the “L”, and “neutral” to “N”.

Turn on the AC source; the evaluation board starts operating in normal condition.

To get more information, please refer to the datasheet of JW15

JoulWatt

5

Top Layer

Bottom Layer

Connect the “Line” of AC source to the “L”, and “neutral” to “N”.

Turn on the AC source; the evaluation board starts operating in normal condition.

JW1531B.

EV1531B JoulWatt



TYPICAL PERFORMANCE CHARACTERISTICS

1. Input Characteristics

1.1 Standby Power

Pin = 0.22W @ Vin = 230V, Io = 0

1.2.1 Efficiency Curve

1.2.2 Efficiency Data

Input 100mA load 200mA load 300mA load 450mA load

90Vac 58.60% 60.67% 60.95% 61.19%

110Vac 58.82% 61.48% 62.66% 62.20%

230Vac 51.71% 57.23% 58.53% 59.88%

264Vac 51.03% 56.95% 57.59% 59.25%

2. Output Characteristics

2.1 Line regulation and load regulation

Test condition: input voltage ranges from 90Vac/60Hz~264Vac/50Hz

EV1531B JoulWatt



Input Voltage No load 100mA

load

200mA

load

300mA

load

450mA

load

Spec. Test result

90Vac 5.72V 5.45V 5.40V 5.14V 4.99V 4.90V-6.10V Pass

110Vac 5.80V 5.47V 5.41V 5.18V 4.99V 4.90V-6.10V Pass

230Vac 5.89V 5.43V 5.38V 5.19V 4.99V 4.90V-6.10V Pass

264Vac 6.10V 5.46V 5.41V 5.26V 5.03V 4.90V-6.10V Pass

Line regulation 1% < 2% Pass

Load regulation 12% <±5%

Note: Output voltage was measured at the end of PCBA.

2.2 Output ripple and noise


Input voltage Ripple and noise (mV)

Test result No load Full load Spec.

90Vac 29.6mV 79mV 100mV PASS

110Vac 45mV 55mV 100mV PASS

230Vac 44mV 61mV 100mV PASS

264Vac 41.6mV 71mV 100mV PASS

Note: Ripple and noise was measured at cable end with CC 100nF/25V and EC 10uF/25V. Measurement bandwidth was

limited to 20MHz.

EV1531B JoulWatt



2.3 Output voltage over shoot

Test condition: input voltage ranges from 90Vac/60Hz~264Vac/50Hz. Output voltage Vo is 5V. Output current Io is

0A &0.45A.

EV1531B JoulWatt



2.4 Dynamic load response test


EV1531B JoulWatt



Frefuency:50Hz; duty cycle: 50%; slew rate: 0.5A/uS; load: 0.1A->0.45A->0.1A

Input Vomin~Vomax

90Vac 4.96V~5.62V

110Vac 4.96V~5.62V

230Vac 5.00V~5.60V

264Vac 5.00V~5.60V

3. Protection function test

3.1 Short Circuit Protection

Test condition: input voltage ranges from 220Vac/50Hz. Output is short circuit condition.

EV1531B JoulWatt



3.2 Over current protection


Input OCP current

90Vac 0.51A

110Vac 0.51A

230Vac 0.56A

264Vac 0.57A

4. EMI test

4.1 Conduction EMI test

Test condition: input voltage ranges from 110Vac/60Hz&230Vac/50Hz. Output voltage Vo is 5V. Output current Io is

0.45A.

5. EMS Test

5.1 1000V Surge Test

Test condition: input voltage 230Vac/50Hz. Output voltage Vo is 5V . Output current Io is 0.45A.

Surge input : +/-1000V Differential-mode

Test result: PASS.

6. Thermal Performance Test

Test condition: input voltage ranges from 115Vac/60Hz~230Vac/50Hz. Output voltage Vo is 5V. Output current Io is 0.45A.

Circuit board in the constant temperature(+55℃℃℃℃) box. Test the Temp. after 2 hours..

EV1531B JoulWatt



Input Po Ambient JW1531B EE10 Inductor

Wire

EE10 Inductor

Core

Diode

ES2J

220Vac 5V/0.45A +55℃ 92.9℃ 86.6℃ 93.3℃ 80.7℃

EV1531B JoulWatt



IMPORTANT NOTICE

� Joulwatt Technology Inc. reserves the right to make modifications, enhancements, improvements,

corrections or other changes without further notice to this document and any product described herein. � Any unauthorized redistribution or copy of this document for any purpose is strictly forbidden.

� Joulwatt Technology Inc. does not warrant or accept any liability whatsoever in respect of any products

purchased through unauthorized sales channel.

Copyright © 2018JW1531B Incorporated.

All rights are reserved by Joulwatt Technology Inc.

EV1531B R0.3 EN 20170619 - joulwatt.com · BUCK CC/CV Driver Without Auxiliary Winding ®...

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