MB39C603 datasheet(13/30 Pages) CYPRESS

номер детали	MB39C603

подробное описание детали	Phase Dimmable PSR LED Driver IC for LED Lighting

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производитель	CYPRESS [Cypress Semiconductor]

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13 / 30 page

Document Number: 002-08450 Rev. *B

Page 13 of 30

MB39C603

8.5

Power-On Sequence

When the AC line voltage is supplied, VBULK is powered from the AC line through a diode bridge, and the VDD pin is charged from

VBULK through an external source-follower BiasMOS.(Figure 8-4 red path)

When the VDD pin is charged up and the voltage on the VDD pin (VVDD) rises above the UVLO threshold voltage, an internal Bias

circuit starts operating, and MB39C603 starts the conduction angle detection (refer to 8.3). After the UVLO is released, this device

enables switching and is operating in a forced switching mode (TON = 1.5 µs, TOFF = 78 µs to 320 µs). When the voltage on the TZE

pin reaches the Zero energy threshold voltage (VTZETH = 0.7V), MB39C603 enters normal operation mode. After the switching

begins, the VDD pin is also charged from Auxiliary Winding through an external diode (DBIAS).(Figure 8-4 blue path)

During non-conduction period VVDD is not supplied from VBULK or Auxiliary Winding. It is necessary to set an appropriate capacitor

of the VDD pin in order to keep VVDD above the UVLO threshold voltage in this period. An external diode (D1) between BiasMOS

and the VDD pin is used to prevent discharge from the VDD pin to VBULK at zero cross points of the AC line voltage.

Figure 8-4 VDD Supply Path at Power-On

UVLO

VDD

DRV

CS

GND

Internal Bias

Generator

Driver

VBULK

Rst

Zbias

Bias

MOS

PWM

Control

Logic

To TZE

DBIAS

D1

13

11

12

2

Phase

Dimmer

Figure 8-5 Power-On Waveform

VBULK

DRV

VDD

VLED

TZE

VTZETH = 0.7V

Force switching (ton=1.5us / toff=78us～320us)

Switching start

UVLO Vth = 10.2V

Normal switching

Аналогичный номер детали - MB39C603

производитель	номер детали	датащи	подробное описание детали
Cypress Semiconductor	MB39C601	907Kb / 37P	High power factor in single conversion
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	MB39C602PNF	1Mb / 40P	High Power Factor LED Driver IC for LED Lighting
	MB39C604	2Mb / 36P	PSR topology in an isolated flyback circuit
	MB39C605	1Mb / 26P	Phase Dimmable PSR LED Driver IC for LED Lighting

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Аналогичное описание - MB39C603

производитель	номер детали	датащи	подробное описание детали
Cypress Semiconductor	MB39C605	1Mb / 26P	Phase Dimmable PSR LED Driver IC for LED Lighting
Asahi Kasei Microsystem...	AP1651BEL	1Mb / 28P	Dimmable LED driver IC for Lighting
NXP Semiconductors	SSL2102	116Kb / 21P	Mains LED driver IC for dimmable LED lighting Rev. 01-29 June 2009
Cirrus Logic	CS1680	644Kb / 16P	Dimmable LED Driver IC for Low-voltage Lighting
SIFIRST TECHNOLOGIES NA...	SFL678	49Kb / 2P	AC/DC PSR Controller for Dimmable LED Lighting
NXP Semiconductors	SSL2101	118Kb / 22P	SMPS IC for dimmable LED lighting Rev. 04-28 August 2009
NXP Semiconductors	SSL2101	160Kb / 23P	Dimmable GreenChip driver for LED lighting Rev. 4.1-5 December 2011
ADTech	ADT6051	269Kb / 4P	Dimmable CC / CV IC for LED Lighting
NXP Semiconductors	SSL2103	414Kb / 21P	SMPS controller IC for dimmable LED lighting Rev. 2-25 November 2010
Sanyo Semicon Device	LV5029MD	238Kb / 15P	LED Driver IC for LED Lighting

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