10A H-Bridge Motor Driver IC

  • Voltage supply operation - 80V
  • High output current - 20A PEAK (SA160DPA)
  • Power delivered to load - 800W (SA160DP), 1100W (SA160DPA)
  • Switching frequency - 45kHz typical, 250 kHz MAX
  • RDS (on), both MOSFETs - 140mW typical
  • Output efficiency - 97% typical

 SA160 Data Sheet

The SA160DP and SA160DPA are low cost, complete H-bridge, Class D “switching” amplifiers for driving brush-type motors and reactive loads. These full-bridge amplifiers can operate on single supplies up to 80V while providing up to 10A continuous output current with the standard model SA160DP, and up to 14A continuous with the A Grade SA160DPA. As follow-on products to the Apex Microtechnology SA60 H-bridge motor driver, both the SA160DP/SA160DPA are designed with very low RDS(ON), a typical 140mΩ over the full -40°C to +85°C operating temperature range, resulting in nearly 50 percent less heat dissipation. Switching frequency for the SA160DP/SA160DPA can be internally generated and is programmable up to 125kHz using an external integrator capacitor. Both devices can also be controlled by external switching signals up to 250kHz. Simultaneous directional and amplitude control can be achieved using an external TTL-compatible PWM signal. Power delivery to the load is an impressive 800W with 97% output efficiency for the standard grade and up to 1.2kW with the SA160DPA. Housed in the same 12-pin PowerSIP package as the SA60, the SA160DP/SA160DPA are drop-in, pin compatible replacements.

A wide variety of loads can be driven in either the voltage mode or the current mode. The most common applications use three external blocks: a low pass filter converting pulse width data to an analog output, a difference amplifier to monitor voltage or current and an error amplifier. Filter in- ductors must be suitable for square waves at the switching frequency (laminated steel is generally not acceptable). Fil- ter capacitors must be low ESR and rated for the expected ripple current. A difference amplifier with gain of less than one translates the differential output voltage to a single feedback voltage. Dashed line connections and a higher gain difference amplifier would be used for current control. The error amplifier integrates the difference between the input and feedback voltages to close the loop.
The SA160 also can be controlled through a microcontroller.
Variant IO (continuous) (A) IO (peak) (A) Temp Range (°C) Package Option Purchase
SA160AEE 14 20 -40 to 125 12-pin SIP DP (formed leads)
SA160DP 10 15 -40 to 85 12-pin SIP DP
SA160DPA 14 20 -40 to 125 12-pin SIP DP
SA160EE 10 15 -40 to 85 12-pin SIP DP (formed leads)