PWM controller
Pulse width modulation (PWM) controllers have strong versatility and support multiple circuit topologies. Engineers can use them to flexibly design DC/DC and AC/DC power conversion circuits for various application scenarios.
Offline flyback controller
The offline flyback controller has a 700V high-voltage direct start circuit, with multiple versions available for secondary side feedback (SSR), primary side feedback (PSR), and constant voltage and current (CV/CC). It can be used in various AC/DC isolated or non isolated power conversion scenarios.
| Product Model | Product Topology | Voltage Min | Feed Control | Duty cycle(max) | UVLO threshold ON/OFF(V) | Frequency Max(KHz) | Operation Tem | PKG |
|---|---|---|---|---|---|---|---|---|
| VPC5021 | /Forward /flyback | 8 | Secondary side feedback /SSR | 80% | 20/7.6 | 1000 | 40-125 | MSOP8 |
High performance PWM controller
The high-performance PWM controller is designed based on the latest 100V high-voltage BCD process, integrating functions such as startup circuit, loop compensation, soft start, differential current sampling, overvoltage/undervoltage protection, overcurrent protection, and over temperature protection. It can greatly simplify the number of BOM components in the system, reduce the PCB area, and improve system reliability
| Product Model | Product Topology | Voltage Min | Feed Control | Duty cycle(max) | UVLO threshold ON/OFF(V) | Frequency Max(KHz) | Operation Tem | PKG |
|---|---|---|---|---|---|---|---|---|
| VPC2187B | /flyback /Boost /Sepic | 4 | Secondary side feedback/SSR Original edge feedback/PSR Non isolated feedback/FB | 80% | 3.7/3.4 | 1000 | -40-125 | MSOP10 |
| VPC2188B | /flyback /Boost /Sepic | 4 | Secondary side feedback/SSR Original edge feedback/PSR Non isolated feedback/FB | 80% | 7.4/6.3 | 1000 | -40-125 | MSOP10 |
Universal PWM controller
The universal PWM controller can be perfectly replaced with traditional PWM controllers, and some models can support low-power operation.
| Product Model | Product Topology | Voltage Min | Feed Control | Duty cycle(max) | UVLO threshold ON/OFF(V) | Frequency Max(KHz) | Operation Tem | PKG |
|---|---|---|---|---|---|---|---|---|
| VPC2842 | VPC2187-003 Single output solution | 16 | Secondary side feedback/SSR Non isolated feedback/FB | 96% | 14.6/8.7 | 1000 | -40-105 | SOP8 |
| VPC2843 | VPC2187-003 Single output solution | 9 | Secondary side feedback/SSR Non isolated feedback/FB | 96% | 8.5/7.7 | 1000 | -40-105 | SOP8 |
| VPC2844 | VPC2187-003 Single output solution | 16 | Secondary side feedback/SSR Non isolated feedback/FB | 48% | 14.6/8.7 | 1000 | -40-105 | SOP8 |
| VPC2845 | VPC2187-003 Single output solution | 9 | Secondary side feedback/SSR Non isolated feedback/FB | 48% | 8.5/7.7 | 1000 | -40-105 | SOP8 |
| VPC28C40 | VPC2187-003 Single output solution | 7.5 | Secondary side feedback/SSR Non isolated feedback/FB | 96% | 7/6.6 | 1000 | -40-105 | SOP8 |
| VPC28C41 | VPC2187-003 Single output solution | 16 | Secondary side feedback/SSR Non isolated feedback/FB | 96% | 14.6/8.7 | 1000 | -40-105 | SOP13 |
| VPC28C42 | VPC2187-003 Single output solution | 16 | Secondary side feedback/SSR Non isolated feedback/FB | 96% | 14.6/8.7 | 1000 | -40-105 | SOP8 |
| VPC28C43 | VPC2187-003 Single output solution | 16 | Secondary side feedback/SSR Non isolated feedback/FB | 96% | 14.6/8.7 | 1000 | -40-105 | SOP8 |
| VPC28C44 | VPC2187-003 Single output solution | 16 | Secondary side feedback/SSR Non isolated feedback/FB | 96% | 14.6/8.7 | 1000 | -40-105 | SOP8 |
| VPC28C45 | VPC2187-003 Single output solution | 16 | Secondary side feedback/SSR Non isolated feedback/FB | 96% | 14.6/8.7 | 1000 | -40-105 | SOP8 |
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