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UAA2016P

更新时间： 2024-02-15 02:33:20

品牌	Logo	应用领域
安森美 - ONSEMI		开关功率控制光电二极管控制器
页数	文件大小	规格书
8页	132K
描述
ZERO VOLTAGE SWITCH POWER CONTROLLER

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数据手册

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UAA2016P 数据手册

UAA2016

Figure 1. Application Schematic

UAA2016

Failsafe

def

MAC212A8

Sampling

Full Wave

Logic

out

–

Pulse

Amplifier

Sense Input

Output

Internal

Reference

1/2

Temp. Red.

4–Bit DAC

Supply

Voltage

Hys

Adj

Load

11–Bit Counter

Synchronization

ref

Sync

sync

APPLICATION INFORMATION

(For simplicity, the LED in series with R

out

is omitted in the

The load current is then:

following calculations.)

(Vrms

sin(2 ft)–V ) R

Load

Triac Choice and R

Determination

out

Depending on the power in the load, choose the triac that

has the lowest peak gate trigger current. This will limit the

output current of the UAA2016 and thus its power

where V

the line frequency.

is the maximum on state voltage of the triac, f is

Set I = I

for t = T /2 to calculate T .

Load Latch

consumption. Use Figure 4 to determine R

according to

out

the triac maximum gate current (I ) and the application low

Figures 6 and 7 give the value of T which corresponds to

and I

temperature limit. For a 2.0 kW load at 220 Vrms, a good triac

choice is the Motorola MAC212A8. Its maximum peak gate

trigger current at 25°C is 50 mA.

the higher of the values of I

Hold

, assuming that

Latch

= 1.6 V. Figure 8 gives the R that produces the

sync

corresponding T .

For an application to work down to – 20°C, R

should be

out

and Filter Capacitor

Supply

With the output current and the pulse width determined as

above, use Figures 9 and 10 to determine R , assuming

60 Ω. It is assumed that: I (T) = I (25°C) exp (–T/125)

GT GT

with T in °C, which applies to the MAC212A8.

Output Pulse Width, R

Supply

pin (including NTC bridge

sync

The pulse with T is determined by the triac’s I

together with the load value and working conditions

(frequency and voltage):

that the sinking current at V

current) is less than 0.5 mA. Then use Figure 11 and 12 to

determine the filter capacitor (C ) according to the ripple

desired on supply voltage. The maximum ripple allowed is

1.0 V.

ref

, I

Hold Latch

Given the RMS AC voltage and the load power, the load

value is:

Temperature Reduction Determined by R

R = V rms/POWER

(Refer to Figures 13 and 14.)

MOTOROLA ANALOG IC DEVICE DATA

1 234 5 6 7 8

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