Seiko Epson Corporation DGE001 Manuale Utente
2. SPECIFICATIONS
S4E16400/S4E16401 Technical Manual
EPSON
9
(Rev.1.1)
Electrical Characteristics of Primary Coil Unit
Item Symbol Condition Min.
Typ.
Max.
Unit
Inductance L1c
19.6
uH
Resistance R2c
203
m
Ω
2.2.6
Functional Description
The following describes the functions of the primary module.
Item Description
Detection of landing
Monitors intermittently to check whether the secondary module is placed on the top
of the primary module.
Fig. 3 shows the timing of the landing detection.
of the primary module.
Fig. 3 shows the timing of the landing detection.
Detection removal
Detects removal of the secondary module from the primary module, and enters
standby status.
standby status.
Authentication Reciprocal
process of authentication between the primary module and secondary
module. The process ensures that the power transmission is permitted only between
the predefined combination. The authentication procedure will be defined
separately.
the predefined combination. The authentication procedure will be defined
separately.
Detection of foreign metal
objects
objects
Monitors constantly to check whether any foreign metal object is inserted. If
detected, the module stops power transmission. However some metals objects may
not be detected depending on the method of embedding the module into chassis or
characteristics of the object. Therefore, this function is not assured to detect every
bit of the foreign objects. After the foreign metal object is removed, the module
resumes the initial state.
detected, the module stops power transmission. However some metals objects may
not be detected depending on the method of embedding the module into chassis or
characteristics of the object. Therefore, this function is not assured to detect every
bit of the foreign objects. After the foreign metal object is removed, the module
resumes the initial state.
Detection of foreign metal
objects
objects
Detects the temperature of the center of coil, and when it becomes 70
°C or higher,
stops the power transmission. Power-on reset is required to resume the
transmission.
Installing thermistor between VREF and TDET as shown in the following diagram
enables you to detect temperature at any position.
Detected temperature: 60
transmission.
Installing thermistor between VREF and TDET as shown in the following diagram
enables you to detect temperature at any position.
Detected temperature: 60
°C (absolute temperature, recommended component is
used)
VREF
TDET
1000pF
RT
External
100KΩ
Recommended component
Murata Manufacturing NCP15WF104F03RC (100K
Murata Manufacturing NCP15WF104F03RC (100K
Ω ±1%/4250K±1%)
Overvoltage protection
Stops power supply to the subsequent overvoltage protection blocks immediately
when input voltage exceeds 6.2
when input voltage exceeds 6.2
± 0.2V.When the input voltage returns to normal
level, the module resumes the initial state.
Detection of low voltage
Stops power transmission when input voltage drops below 4.0 V during the
transmission. Power-on reset is required to resume the transmission.
transmission. Power-on reset is required to resume the transmission.
Detection of low voltage
Can display the state of primary module by connecting LED with the LEDA and
LEDK pins.
LEDK pins.
State LED
Standby Off
During power transmission
During power transmission
On
Standby after fully charged
Off
When detecting abnormal temperature
Blinking
When detecting low voltage
Blinking