|
|
PDF IW1816 Data sheet ( Hoja de datos )
| Número de pieza | IW1816 | |
| Descripción | Off-Line Digital Green-Mode PWM Controller | |
| Fabricantes | Dialog Semiconductor | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de IW1816 (archivo pdf) en la parte inferior de esta página. Total 18 Páginas | ||
|
No Preview Available !
iW1816
Off-Line Digital Green-Mode PWM Controller
Integrated with Power BJT and OTP
1 Description
The iW1816 is a high performance AC/DC power supply control device which uses digital control technology to build
peak current mode PWM flyback power supplies. This device includes an internal power BJT and operates in quasi-
resonant mode to provide high efficiency along with a number of key built-in protection features while minimizing the
external component count, simplifying EMI design, and lowering the total bill of material cost. The iW1816 removes the
need for secondary feedback circuit while achieving excellent line and load regulation. It also eliminates the need for
loop compensation components while maintaining stability in all operating conditions. The pulse-by-pulse waveform
analysis allows for a loop response that is much faster than traditional solutions, resulting in improved dynamic load
response for both one-time and repetitive load transients. The built-in power limit function enables optimized transformer
design in universal off-line applications and allows for a wide input voltage range.
Dialog’s innovative proprietary technology ensures that power supplies built with the iW1816 can achieve highest
average efficiency, lowest standby power consumption, and fast smooth startup with a wide range of output voltage (5V,
12V and above) and capacitive loads (from 330μF to 6,000μF).
2 Features
●● PrimAccurateTM primary-side feedback eliminates
●● Quasi-resonant operation for highest overall efficiency
opto-isolators and simplifies design
●● EZ-EMI® design easily meets global EMI standards
●● Internal 800-V bipolar junction transistor (BJT)
●● Very tight constant voltage and constant current
●● Adaptively controlled soft start-up enables fast and
regulation with primary-side-only feedback
smooth start-up for a wide range of output voltage (5V,
12V and above) and capacitve loads up to 6,000μF
●●
No external compensation components required
●● 64kHz PWM switching frequency
●● Built-in single-point fault protections against output
short circuit, output over-voltage, and current-sense-
●● No-load power consumption < 30mW at 230VAC with
typical application circuit
resistor short-circuit faults
●● Built-in over-temperature protection (OTP)
●● Fast dynamic load response for both one-time and
repetitive load transients
●● No audible noise over entire operating range
●● Adaptive multi-mode PWM/PFM control improves
efficiency
3 Applications
●● Low-power AC/DC power supply for smart meters,
motor control, home appliances, networking devices
and industrial applications
●● Linear AC/DC replacement
Datasheet
www.dialog-semiconductor.com
Rev. 1.0
1 of 18
30-Jun-2016
© 2016 Dialog Semiconductor
1 page  
iW1816
Off-Line Digital Green-Mode PWM Controller
Integrated with Power BJT and OTP
7 Electrical Characteristics
VCC = 12V, -40°C ≤ TA ≤ 85°C
Parameter
Symbol
Test Conditions
VSENSE SECTION (Pin 6)
Input leakage current
IBVS
VSENSE = 2V
Nominal voltage threshold
VSENSE(NOM) TA=25°C, negative edge
Output OVP threshold
VSENSE(MAX) TA=25°C, negative edge
ISENSE SECTION (Pin 7)
Over-current threshold
ISENSE regulation upper limit
(Note 1)
VOCP
VIPK(HIGH)
ISENSE regulation lower limit
(Note 1)
VIPK(LOW)
Input leakage current
ILK ISENSE = 1.0V
VCC SECTION (Pin 4)
Maximum operating voltage
(Note 1)
VCC(MAX)
Start-up threshold
Under-voltage lockout
threshold
Start-up current
Quiescent current
VCC(ST)
VCC(UVL)
IIN(ST)
ICCQ
Zener breakdown voltage
VZB
BJT Section (Pin 1, Pin 2, and Pin 8)
Collector cutoff current
ICB0
VCC rising
VCC falling
VCC = 10V
No IB current
Zener current = 5mA
TA=25°C
VCB = 800V, IE = 0A
Collector-emitter cutoff current
DC Current Gain (Note 2)
VCE = 800V, REB = 0Ω TA = 25°C
ICES VCE = 800V, REB = 0Ω TA = 100°C
VCE = 500V, REB = 0Ω TA = 25°C
VCE = 5V, IC = 0.2A
hFE VCE = 5V, IC = 0.3A
VCE = 5V, IC = 1mA
Datasheet
www.dialog-semiconductor.com
Rev. 1.0
5 of 18
Min Typ Max Unit
1.518
1.533
1.834
1
1.548
V
V
V
1.11 1.15 1.19
1.0
0.23
1
V
V
V
μA
16
10.0 11.0 12.0
3.8 4.0 4.2
1.0 1.7 3.0
2.7 4.0
18.5 19.5 20.5
V
V
V
μA
mA
V
0.01 mA
0.01
0.02 mA
0.005
15 40
10 30
10
30-Jun-2016
© 2016 Dialog Semiconductor
5 Page 
iW1816
Off-Line Digital Green-Mode PWM Controller
Integrated with Power BJT and OTP
iin(t)
vin(t)
+ ig(t)
vg(t)
–
TS(t)
N:1 id(t)
VO
D1
+
CO
IO
VAUX
Q1
Figure 10.2 : Simplified Flyback Converter
In order to tightly regulate the output voltage, accurate information about the output voltage and load current must
be accurately conveyed. In the DCM flyback converter, this information can be read via the auxiliary winding or
the primary magnetizing inductance (LM). During the Q1 on-time, the load current is supplied from the output filter
capacitor CO. The voltage across LM is vg(t), if the voltage dropped across Q1 is zero. The current in Q1 ramps up
linearly at a rate of:
dig (t ) = vg (t )
dt LM
At the end of on-time, the current ramps up to:
( )ig _ peak t =
vg (t ) × tON
LM
(10.1)
(10.2)
This current represents a stored energy of:
E=g
LM
2
× ig _ peak
(t )2
(10.3)
When Q1 turns off at tO, ig(t) in LM forces a reversal of polarities on all windings. Ignoring the communication-time
caused by the leakage inductance LK at the instant of turn-off tO, the primary current transfers to the secondary at a
peak amplitude of:
id =(t )
NP
NS
× ig _
peak
(t)
(10.4)
Assuming the secondary winding is master, and the auxiliary winding is slave,
1
VAUX
=
VO
x
NAUX
NS
VAUX
0V
Datasheet
www.dialog-semiconductor.com
2
VAUX
=
-VIN
x
NAUX
NP
Figure 10.3 : AuxRilieavry. 1V.o0ltage Waveforms
11 of 18
30-Jun-2016
© 2016 Dialog Semiconductor
11 Page | ||
| Páginas | Total 18 Páginas | |
| PDF Descargar | [ Datasheet IW1816.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| IW1810 | Off-Line Digital Green-Mode PWM Controller |  iWatt |
| IW1812 | Off-Line Digital Green-Mode PWM Controller | Dialog Semiconductor |
| IW1816 | Off-Line Digital Green-Mode PWM Controller | Dialog Semiconductor |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |