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PAMS
Technical Documentation
NSE–5
System Module
Page 2 – 26
Issue 1 07/99
PWM
t
VOUT
t
4V
VLIM
”1”
”0”
SWITCH
t
ON
OFF
2
1.
1
Battery removed, (standard) charger connected, VOUT rises (follows charger voltage)
2. VOUT exceeds limit VLIM(X), switch is turned immediately OFF
3.
3
VOUT falls (because no battery) , also VCH<Vpor (standard chargers full–rectified
output). When VCH > Vpor and VOUT < VLIM(X) –> switch turned on again (also PWM
is still HIGH) and VOUT again exceeds VLIM(X).
4
4. Software sets PWM = LOW –> CHAPS does not enter PWM mode
Vstart
5
5. PWM low –> Startup mode, startup current flows until Vstart limit reached
VCH
(Standard
Charger)
Vpor
Vstarthys
Droop depends on load
Istart off due to VCH<Vpor
& C in phone
6
6. VOUT exceeds limit Vstart, Istart is turned off
7. VCH falls below Vpor
7
Different PWM Frequencies ( 1Hz and 32 Hz)
When a travel charger (2– wire charger) is used, the power switch is
turned ON and OFF by the PWM input when the PWM rate is 1Hz. When
PWM is HIGH, the switch is ON and the output current Iout = charger
current – CHAPS supply current. When PWM is LOW, the switch is OFF
and the output current Iout = 0. To prevent the switching transients
inducing noise in audio circuitry of the phone soft switching is used.
The performance travel charger (3– wire charger) is controlled with PWM
at a frequency of 32Hz. When the PWM rate is 32Hz CHAPS keeps the
power switch continuously in the ON state.
Содержание NSE-5 Series
Страница 5: ...PAMS Technical Documentation NSE 5 Series Transceivers Issue 1 07 99 Chapter 1 General Information...
Страница 15: ...NSE 5 Series Transceivers PAMS Technical Documentation Issue 1 07 99 Chapter 2 System Module...
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Страница 97: ...PAMS Technical Documentation Issue 1 07 99 Mechanical Assembly...
Страница 98: ...PAMS Technical Documentation NSE 5 Mechanical Assembly Page 2 2 Issue 1 07 99 Exploded View of NSE 5...
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Страница 101: ...NSE 5 Series Transceivers PAMS Technical Documentation Issue 1 07 99 Service Software Instructions...
Страница 195: ...NSE 5 Series Transceivers PAMS Technical Documentation Issue 1 07 99 Service Tools...
Страница 219: ...PAMS Technical Documentation NSE 5 Series Transceivers Issue 1 07 99 Disassembly Instructions...
Страница 220: ...PAMS Technical Documentation NSE 5 Disassembly Instructions Page 2 Issue 1 07 99 This page intentionally left blank...
Страница 227: ...NSE 5 Series Transceivers PAMS Technical Documentation Issue 1 07 99 Troubleshooting...
Страница 266: ...PAMS Technical Documentation NSE 5 Troubleshooting Page 40 Issue 1 07 99 This page intentionally left blank...
Страница 267: ...PAMS Technical Documentation Original 11 97 HFU 2 Handsfree Unit...
Страница 274: ...PAMS Technical Documentation HFU 2 Handsfree Unit Page 8 Original 11 97 Exploded View of HFU 2 3 2 4 5 1...
Страница 281: ...NS 3 5 Series Transceivers PAMS Technical Documentation Issue 1 07 99 Non Serviceable Accessories...
Страница 303: ...Programmes After Market Services NSE 5 Series Transceivers Issue 1 07 99 CARK 64 91 Installation Guides...
Страница 316: ...NSE 5 Schematics Layouts V13 A 2 Page Draft 05 RF and BB Interconnections...
Страница 317: ...NSE 5 Schematics Layouts V13 A 3 Page Draft 05 Baseband Block...
Страница 318: ...NSE 5 Schematics Layouts V13 A 4 Page Draft 05 Audio...
Страница 319: ...NSE 5 Schematics Layouts V13 A 5 Page Draft 05 CPU...
Страница 320: ...NSE 5 Schematics Layouts V13 A 6 Page Draft 05 Infrared Module...
Страница 321: ...NSE 5 Schematics Layouts V13 A 7 Page Draft 05 Power...
Страница 322: ...NSE 5 Schematics Layouts V13 A 8 Page Draft 05 5 S oft left E nd 3 1 7 2 S end 6 9 0 8 4 S oft right User Interface...
Страница 323: ...NSE 5 Schematics Layouts V13 A 9 Page Draft 05 CRFU3...
Страница 324: ...NSE 5 Schematics Layouts V13 A 10 Page Draft 05 PA...
Страница 325: ...NSE 5 Schematics Layouts V13 A 11 Page Draft 05 SUMMA...
Страница 326: ...NSE 5 Schematics Layouts V13 A 12 Page Draft 05 Component Layout Top...
Страница 327: ...NSE 5 Schematics Layouts V13 A 13 Page Draft 05 Component Layout Bottom...