The Kikusui PBZ20-20 (BOP20-20) is an intelligent bipolar programmable DC power supply engineered for precision testing and development applications demanding four-quadrant operation. Built on a Switching + Linear topology, this unit delivers continuous polarity control through zero, enabling both sourcing and sinking of power—essential for characterizing inductive and capacitive loads. The hybrid architecture balances weight efficiency, high-speed transient response, and low-noise output.
## Technical Specifications
Bipolar voltage range: ±0.000 V to ±21.000 V; unipolar: 0.000 V to 21.000 V. Bipolar current range: ±0.000 A to ±21.000 A; unipolar: 0.000 A to 21.000 A. Rated output power is 400 W with peak current capability of ±120 A (CV mode, 6× rating). Voltage and current accuracy are both ±(0.05 % of setting + 0.05 % of rating). Setting resolution reaches 0.0001 V and 0.0001 A. Output ripple noise in CV mode is 2 mVrms typical (20 mVp-p typical) at 100 kHz typical switching frequency. CV response time is 3.5 μs typical with rated load at 1 kHz. Sink power is limited to 100 W in bipolar mode; no limitation in unipolar mode.
## Key Features
• Selectable bipolar/unipolar and CV/CC operating modes
• Arbitrary waveform generation including user-defined patterns, sine, square, and triangle waves with up to 1024-step sequences
• Trigger-based, clock-based, or combined synchronization for multi-unit operation (up to 5 units connected)
• Parallel operation capability: 2 units via standard option kit; 3–5 units upon request; up to 10 units for PBZ20-20A variants
• Preset memory (3 CV/CC positions) and setup memory (10 positions)
• Protection: overvoltage, overcurrent, overheat, and power limit functions
• Remote sensing with function ON/OFF for CV mode
• Soft start/stop with adjustable timing from 0.1 ms to 1000 s
• Approximate weight: 22 kg
## Typical Applications
Inductive and capacitive load testing, battery simulation, transient load profiling, and multi-quadrant power characterization in R&D and production test environments.
