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MB39C604 Datasheet(PDF) 8 Page - Cypress Semiconductor

Part # MB39C604
Description  PSR topology in an isolated flyback circuit
PDF  36 Pages
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Manufacturer  CYPRESS [Cypress Semiconductor]
Direct Link  http://www.cypress.com
Logo CYPRESS - Cypress Semiconductor

MB39C604 Datasheet(HTML) 8 Page - Cypress Semiconductor

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Document Number: 002-08441 Rev.*A
Page 8 of 36
MB39C604
6. Electrical Characteristics
Table 4. Electrical Characteristics
(Ta = +25°C, VVDD = 12V)
Parameter
Symbol
Pin
Condition
Value
Unit
Min
Typ
Max
UVLO
UVLO Turn-on
threshold voltage
VTH
VDD
-
12.25
13
13.75
V
UVLO Turn-off
threshold voltage
VTL
VDD
-
7.55
7.9
8.5
V
Startup current
ISTART
VDD
VVDD = 7V
-
65
160
µA
TRANSFORMER
ZERO ENERGY
DETECTION
Zero energy
threshold voltage
VTZETL
TZE
TZE = "H" to "L"
-
20
-
mV
Zero energy
threshold voltage
VTZETH
TZE
TZE = "L" to "H"
0.6
0.7
0.8
V
TZE clamp voltage
VTZECLAMP
TZE
ITZE = -10 µA
-200
-160
-100
mV
OVP threshold voltage
VTZEOVP
TZE
-
4.15
4.3
4.45
V
OVP blanking time
tOVPBLANK
TZE
-
0.6
1
1.7
µs
TZE input current
ITZE
TZE
VTZE = 5V
-1
-
+1
µA
COMPENSATION
Source current
ISO
COMP
VCOMP = 2V, VCS = 0V
VDIM = 1.85V
-
-27
-
µA
Trans conductance
gm
COMP
VCOMP = 2.5V, VCS = 1V
-
96
-
µA/V
ADJUSTMENT
ADJ voltage
VADJ
ADJ
-
1.81
1.85
1.89
V
ADJ source current
IADJ
ADJ
VADJ = 0V
-650
-450
-250
µA
ADJ time
TADJ
TZE
DRV
TADJ (RADJ = 51 kΩ)
- TADJ (RADJ = 9.1 kΩ)
490
550
610
ns
Minimum switching
period
TSW
TZE
DRV
-
6.75
7.5
8.25
µs
CURRENT
SENSE
OCP threshold voltage
VOCPTH
CS
-
1.9
2
2.1
V
OCP delay time
tOCPDLY
CS
-
-
400
500
ns
CS input current
ICS
CS
VCS = 5V
-1
-
+1
µA



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