Limited Internal
PRODUCT SPECIFICATION
22 (23)
Prepared (also subject responsible if other)
No.
ESKEVIN
2/1301-BMR 640 1401+ Uen
Approved
Checked
Date
Rev
Reference
SEC/D (Julia You)
EZYPING
2007-8-27
G
+5.0V, 0.6A / +3.3V, 0.9A / 6W Dual, Typical
Characteristics
PKR 4628 SI
Start-up
Shut-down
Start-up enabled by connecting V
I at:
Tref = +25°C, IO1 = 0.6 A, IO2 = 0.9 A resistive
load, VI = 53 V
Top trace: Output 1 (2 V/div.).
Mid trace: Output 2 (2 V/div.).
Bottom trace: Input voltage (50 V/div.).
Time scale: 2 ms/div.
Shut-down enabled by disconnecting V
I at:
Tref = +25°C, IO1 = 0.6 A, IO2 = 0.9 A resistive
load, VI = 53 V.
Top trace: Output 1 (2 V/div.).
Mid trace: Output 2 (2 V/div.).
Bottom trace: Input voltage (50 V/div.).
Time scale: 2 ms/div.
Output Ripple & Noise
Output Load Transient Response
Output voltage ripple (20mV/div.) at:
Tref = +25°C, IO1 = 0.6 A, IO2 = 0.9 A resistive
load, VI = 53 V. Time scale: 2 μs/div
Top trace: Output 1 (20 mV/div.).
Bottom trace: Output 2 (20 mV/div.).
See the filter in the Output ripple and noise
section (EMC Specification).
Output voltage response to load current
step-change (0.15-0.45-0.15 A) at:
Tref =+25°C, VI = 53 V. IO2 = 0.9A resistive
load
Top trace: Output 2 (200mV/div.).
Mid trace: Output 1 (200mV/div.).
Bottom trace: load current Output 1
(0.5 A/div.).
Time scale: 0.1 ms/div.
Output Voltage Adjust (see operating information)
Passive trim
The resistor value for an adjusted output voltage is calculated by using
the following equations:
Output Voltage Adjust Upwards, Increase:
Rou = 0.495 × (3.93 — VO)/(VO — 3.27)kΩ
E.g. Increase 4% =>Vo = 3.40 Vdc
0.495
× (3.93 — 3.4)/(3.4 —3.27 ) = 2.02 kΩ
Output Voltage Adjust Downwards, Decrease:
Rod = 1.986 × (3.27 — VO)/(VO — 2.59)kΩ
E.g. Decrease 2% =>Vo = 3.20 Vdc
1.986 × (3.27 — 3.20)/(3.20 — 2.59) = 0.228 k
Ω
E
PKR 4000 series
DC/DC converters, Input 36-75 V, Output up to 1.5 A/7 W
EN/LZT 146 302 R6E September 2007
Ericsson Power Modules AB
Technical Specication
E
PKR 4000 series
DC/DC converters, Input 36-75 V, Output up to 1.5 A/7 W
EN/LZT 146 302 R6F November 2007
Ericsson Power Modules AB
Technical Specication
E
PKR 4000 series
DC/DC converters, Input 36-75 V, Output up to 1.5 A/7 W
EN/LZT 146 302 R6G November 2008
Ericsson Power Modules AB
Technical Specication
25