- Fast HV rise/fall time <4 - 8 ns.
- HV pulse amplitude up to 4 kV
- Pulse repetition rate up to 3.5 MHz
PCD series drivers are designed for wide range of applications and operating modes. Repetition rate can be up to 500 kHz for standard range of drivers, up to 1 MHz enhanced and up to 3.5 MHz high rate. Standard range of possible pulse durations is from 100 ns to 5 μs. It can be extended to infinity using pulse regeneration technique. Connection diagram can be PUSH-PULL configuration using stand-alone driver, as well as FULL BRIDGE using two drivers for one Pockels cell. FULL BRIDGE configuration gives such advantages as repetition rate doubling to reach up to 7 MHz rate, pulse duration shortening down to zero or voltage doubling on pockels cell. Contact EKSPLA for extended information and suggestions for pockels cell driving solutions you need.
General specifications table
| Driver model |
PCD-UHR series |
| Maximal HV rated voltage |
3 kV ( 4 kV as option) |
| Maximal HV operating voltage |
<90% from rated voltage |
| Polarity |
Positive |
| HV pulse rise time |
< 4-8 ns (Fig.6) |
| HV pulse fall time |
< 4-8 ns (Fig.8) |
| HV pulse duration |
100...5000 ns |
| Maximal HV repetition rate |
3.5 MHz |
| Triggering pulse duration |
>120 ns |
| Triggering pulse amplitude |
3-5 V (50 Ω load) |
| Maximal length of leads to Pockels cell |
100 mm |
| Control diagram options: |
| a) single triggering pulse control |
Fig. 5 |
| b) two trigger pulses control |
Fig. 4 |
| External triggering pulse rise time |
< 20 ns |
| HV pulse delay |
40-50 ns |
| External powering requirements: |
| - high voltage supply (depends on required output voltage) |
up to 3 kV |
| - low voltage DC supply |
12±0.5V, <150 mA14...25 V; <150 mA, on request |
| Dimensions |
63 x 94 x H mm, (Fig.9) |
Not all combinations of parameters can be possible at the same time.
Specifications are given for Pockels cell with capacity <6pF
Configuration samples of drivers
| P/N of driver |
PCD-UHR1-10-3.8
PCD-UHR2-10-3.8 |
PCD-UHR1-50-1.6
PCD-UHR2-50-1.6 |
PCD-UHR1-200-3.8
PCD-UHR2-200-3.8 |
PCD-UHR1-250-2.6
PCD-UHR2-250-2.6 |
PCD-UHR1-500-2.6
PCD-UHR2-500-2.6 |
PCD-UHR1-1000-1.8
PCD-UHR2-1000-1.8 |
PCD-UHR1-1000-2.0
PCD-UHR2-1000-2.0 |
| Maximal HV rated voltage |
3.8 kV |
1.6 kV |
3.8 kV |
2.6 kV |
2.6 kV |
1.8 kV |
2 kV |
| Maximal HV operating voltage |
3.0 kV |
1.5 kV |
3.0 kV |
2.5 kV |
2.5 kV |
1.5 kV |
1.8 kV |
| Maximal HV repetition rate |
10 kHz |
50 kHz |
200 kHz |
250 kHz |
500 kHz |
1000 kHz |
1000 kHz |
| HV pulse rise time |
<8 ns |
<5.5 ns |
<8 ns |
<7 ns |
<7 ns |
<5.5 ns |
<6 ns |
| HV pulse fall time |
<8 ns |
<5.5 ns |
<8 ns |
<7 ns |
<7 ns |
<5.5 ns |
<6 ns |
| HV power consumption |
<4 W |
<3 W |
<65 W |
<40 W |
<80 W |
<70 W |
<80 W |
| Dimension H (Fig 9) |
26.5 mm |
26.5 mm |
33.5 mm |
| Dimension A (Fig 9) |
3 mm |
3 mm |
10 mm |
| Cooling |
Conductive |
Conductive |
Conductive or water |
Driver needs to be mounted on the heatsink (excluding water cooled versions).
Heat sink temperature needs to be lower than 35°C (95°F) in all regimes of operation.
