Datasheet > CS1616-FZZ

CS1616-FZZ

更新时间： 2022-04-14 00:11:23

品牌	Logo	应用领域
APEX		控制器
页数	文件大小	规格书
16页	387K
描述
Single Stage Dimmable Offline AC/DC Controller for LED Lamps

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CS1616-FZZ 数据手册

CS1615/16

dimmer switch on the falling edge of the input voltage using a

source-controlled dimmer-compatibility circuit.

5.4.1 Clamp Overpower Protection

The CS1615/16 clamp overpower protection (COP) control logic

averages the turn-on time of the clamp circuit. If the output of the

averaging logic exceeds 10%, a COP event is actuated. The

clamp circuit is disabled as well as the flyback/buck-boost

controller and the dimmer-compatibility circuit. The COP fault

state is not cleared until the power to the IC is recycled.

5.5 Dimmer Angle Extraction and the Dim

Mapping Algorithm

When operating with a dimmer, the dimming signal is extracted

in the time domain and is proportional to the conduction angle of

the dimmer. A control variable is passed to the quasi-resonant

flyback/buck-boost controller to achieve a wide range of output

currents.

Figure 11. Trailing-edge Mode Phase-cut Waveform

5.6 Dual-mode Flyback/Buck-boost

5.3.2 Switch Overpower Protection

The CS1615/16 is configurable for isolated or non-isolated

topologies using a flyback transformer or buck-boost inductor,

respectively. The CS1615/16 controls the dual-mode

flyback/buck-boost to satisfy the dimmer hold current

requirement in Dimmer Mode and provide power factor

correction in No-dimmer Mode. The dual-mode ensures a

minimum average input current greater than the required dimmer

hold current when behind a dimmer and shapes the line current

when not behind a dimmer to provide power factor correction. It

also ensures half line-cycle averaged constant output current.

To prevent excessive power dissipation on the source-switched

FET Q1, the CS1615/16 monitors voltage across FET Q1 and

current flow through FET Q1 to calculate average power

dissipation. If the calculated power exceeds the overpower

protection threshold a fault condition occurs. The IC output is

disabled and the controller attempts to restart after

approximately thirty seconds.

5.4 Voltage Clamp Circuit

To keep trailing-edge dimmer switches conducting and from

misfiring, the dimmer switch internal capacitor has to be

charged quickly around the trailing edge of the phase-cut

waveform. In addition to the dimmer compatible circuit, an

optional clamp circuit provides a high-current sinking path for

delivering the required amount of charge onto the dimmer

switch capacitor in a short amount of time.

Figure 13 illustrates the dual-mode flyback topology. The

CS1615/16 regulates output current using primary-side control,

which eliminates the need for opto-coupler feedback. The control

loop operates in peak current control mode. Demagnetization

time of the transformer is sensed by the FBAUX pin using an

auxiliary winding and is used as an input to the control loop.

The CS1615/16 provides active clamp circuitry on the CLAMP

pin, as shown in Figure 12.

V_rect

LED+

LED-

V_rect

CS1615/16

V_AUX

Clamp

IAC

VDD

I_CLAMP

FBSENSE

FBAUX

GND

CTRL2

R_Sense

CLAMP

R_CTRL2

GD ¹³

CS1615/16

R_Sense

Figure 13. Flyback Model

Figure 12. CLAMP Pin Model

DS961F1

1...6 7 8910 11 12...16

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与CS1616-FZZ相关器件

型号	品牌	获取价格	描述	数据表
CS1616-FZZR	APEX	获取价格	Single Stage Dimmable Offline AC/DC Controller for LED Lamps
CS16-16IO2	ETC	获取价格	Netzthyristoren Phase control thyristors
CS16-2	TE	获取价格	Low Power Limiter Diodes
CS16210	ETC	获取价格	CS16210EP
CS16210EP	ETC	获取价格	CS16210EP
CS16-3	TE	获取价格	Low Power Limiter Diodes
CS1630	APEX	获取价格	2-Channel TRIAC Dimmable LED Driver IC
CS1630-FSZ	APEX	获取价格	2-Channel TRIAC Dimmable LED Driver IC
CS1630-FSZR	APEX	获取价格	2-Channel TRIAC Dimmable LED Driver IC
CS16311EN	ETC	获取价格	VFD 显示驱

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